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Answering your Questions about Power Design  

How2Power Today Newsletter Authors

In each issue of How2Power Today, experts from industry and academia present the latest design techniques and solutions for power conversion in a wide range of applications.

In this section, we provide some background on these authors.

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Evgenije Adzic
Evgenije M. Adzic received the Dipl.-Ing., M. S. and Ph.D. degrees in electrical engineering from the Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia in 2005, 2007 and 2014, respectively. Since 2006 Evgenije has been employed on the Faculty of Technical Sciences in the Department of Power Electronics and Electrical Machines, first as a teaching and research assistant and then from 2014 as an assistant professor. In 2014 Evgenije co-founded PERUN Technologies. His expertise includes motor drives, grid-connected converters and power electronics interfaces, while his main activities are focused on hardware and control software development.
Articles written by Evgenije Adzic in How2Power Today:
08/15/16Open HW/SW Platform Accelerates Development Of Control Solutions For Power Electronics
01/18/13Hardware-In-The-Loop System Eases Development And Testing Of Grid-Connected Power Electronics Applications

Bilal Ahmed
Bilal Ahmed has more than 10 years of experience in PLC, SCADA, data acquisition, industrial automation, robotics and embedded systems. Currently he works as head of Embedded Systems and Robotics in HF Electronics.
Articles written by Bilal Ahmed in How2Power Today:
05/16/17Mixed-Signal Matrix IC Eases Control Of Three-Phase AC Systems
04/17/17Programmable Devices Implement Highly Accurate Optical Tachometer

Dr. Sunil Akre
Sunil Akre, a senior member of the technical staff, joined Maxim Integrated Products in 2006. Prior to joining Maxim he Worked for C&D Technologies and Martek Power Abbott, both in the U.S., as well as for Alpha Technologies in Canada, Artesyn Technologies in Ireland, Siemens A.G. in Germany, Advanced Microcomputers in Singapore, and Aditya Power Systems in India. In 2003 he earned a Ph.D. in Power Electronics from the University College in Cork, Ireland and in 1986, an undergraduate Degree in Electronics & Telecommunications from Govt. College of Engineering in Pune, India.
Articles written by Dr. Sunil Akre in How2Power Today:
02/19/10Small-signal Analysis, Modeling and Design of a Synchronous Buck-Converter in Voltage-Mode Control

Don Alfano
Don Alfano serves as director of power products at Silicon Laboratories. Prior to Silicon Laboratories, Don was co-founder and vice president of marketing for Cygnal Integrated Products, which was acquired by Silicon Laboratories in 2003. Prior to founding Cygnal, he worked for TelCom Semiconductor, an analog and mixed-signal IC supplier, where he served as director of marketing and director of applications. Previously, Don served as vice president of marketing for NVE, Eastern area manager for Dallas Semiconductor and field applications engineer for Mostek. He has also held design engineering positions for analog and digital control equipment and telecommunication systems. Don holds a master’s degree in electrical engineering from Villanova University.
Articles written by Don Alfano in How2Power Today:
03/30/10Digital Isolators: A Space-Saving Alternative to Gate-Drive Transformers in DC-DC Converters

Jim Aliberti
Jim Aliberti is a product marketing engineer for Computing Power Products at Texas Instruments where he is responsible for marketing products for CPU Core and POL power in a broad range of computing applications.
Articles written by Jim Aliberti in How2Power Today:
07/15/13How To Match The DDR Memory Power Solution To The Application

C. Appere
Cédric Appere joined STMicroelectronics in Tours, France in 2000 and currently serves as a telecom application engineer. Cédric is a graduate of Ecole Centrale d'Electronique.
Articles written by C. Appere in How2Power Today:
03/30/10Integrated Protection and Careful Layout Protect PoE Systems from EOS and ESD

Hector F. Arroyo
Hector F. Arroyo holds a BSEE degree with a major in Electronics and Communications from the Monterrey Institute of Technology (ITESM) in Mexico City. Hector joined National Semiconductor in 1997 and since then has held various positions in the applications, sales and technical marketing areas. Since 2005 he has been a senior field applications engineer and a staff field applications engineer in San Diego for local southern California markets as well as for Latin America on selected technologies such as LED lighting.
Articles written by Hector F. Arroyo in How2Power Today:
06/24/11Tapped Inductors Enable Simple, Compact Buck-Boost Converters With Single Noninverting Or Dual, Complementary Outputs

Agasthya Ayachit
Agasthya Ayachit received his B.E degree in Electrical and Electronics Engineering from Visvesvaraya Technological University, India in 2009 and M.S degree in Electrical Engineering from Wright State University in 2011. Currently, he is working as a lecturer at Penn State Erie—The Behrend College. His research interests are in resonant and PWM dc-dc power converters, modeling and control of dc-dc converters, and energy harvesting.
Articles written by Agasthya Ayachit in How2Power Today:
12/22/11Power Electronic Circuitry In LED Modules: An Overview

Nikola L. Čelanović
Nikola L. Čelanović received a B.S. degree in electrical engineering from the University of Novi Sad in 1995, an M.S. degree in Mechanical Engineering from Vanderbilt University, Nashville, Tennessee in 1996 and a Ph.D. degree from Virginia Polytechnic Institute and State University in 2000. From 2000 to 2005 Nikola was with the ABB Research Centre in Baden-Dättwil, Switzerland and from 2005 to 2008 with the ABB Drives Development Department, Turgi, Switzerland. Since 2008 Nikola has been the CEO and co-founder of Typhoon HIL in Baden, Switzerland.

Ramesh Balasubramaniam
Ramesh Balasubramaniam joined International Rectifier (IR) in April 2011 through International Rectifier’s acquisition of CHiL Semiconductor. After an initial assignment in strategic business development, Ramesh was tasked to provide marketing and business leadership for the Point of Load product group within the Enterprise Power Business Unit. In this role, Ramesh works closely with cross functional groups to define product roadmaps and strategies, bring products to market and drive sales and business growth. Ramesh has over 20 years of experience in the power management industry including positions at Semtech, Seagate Technology and Philips Semiconductors (now NXP). Prior to joining IR, Ramesh led the digital power controllers marketing effort at CHiL Semiconductor. Ramesh has Masters degrees from the University of Southampton (UK) and the University of Glasgow (UK).
Articles written by Ramesh Balasubramaniam in How2Power Today:
06/14/13Circuit And Packaging Innovations Plus Latest MOSFETs Optimize DC-DC Converters For Space-Constrained Designs

Alan Ball
Alan Ball has 35 years experience in switching power supply design and analysis. His career has encompassed both military and commercial power supply design. For the past fifteen years, Alan has been involved with applications support for semiconductor products, working for ON Semiconductor where he has held various application engineering positions. Alan is currently the technical director of engineering for the Digital Consumers Group at ON Semiconductor. Previously, Alan worked for Power Paragon as an engineering manager and general manager of the Airborne Power division. He holds a BSEE from Arizona State University, and an MBA from Keller Graduate School of Management. Alan holds approximately 25 patents.
Articles written by Alan Ball in How2Power Today:
09/28/12Maximize The Efficiency Of Induction Heating By Minimizing IGBT Losses

Thomas Barbieri
Thomas Barbieri has spent the past 14 years of his career filling various roles within the semiconductor industry, He started with Freescale Semiconductor, where he acted as a process engineer for MEMS sensors and as a failure analysis engineer/materials characterization specialist supporting all semiconductor products. For the last 8 years, Tom has been with Cree, having served as an R&D scientist with the Materials business unit and a product engineer with the LED Components business unit, prior to joining Cree Power as a marketing engineer. Prior experience included an assistant professorship in the Physics Department of Simmons College. Tom received his PhD in Materials Science and Engineering from Cornell University in 1999.
Articles written by Thomas Barbieri in How2Power Today:
08/17/15Understanding Evolution Of SiC Schottkys Is Key To Device Selection

Christophe Basso
Christophe Basso is an Application Engineering Director at ON Semiconductor in Toulouse, France. He has originated numerous integrated circuits among which the NCP120X series has set new standards for low standby power converters. SPICE simulation is also one of his favorite subjects and he authored a second book, “Switch-Mode Power Supplies: SPICE Simulations and Practical Designs”, published by McGraw-Hill in 2008. His work was positively reviewed in several magazines and in a recent PELS newsletter. Christophe holds a BSEE-equivalent from the Montpellier University, France and a MSEE from the Institut National Polytechnique de Toulouse, France. He holds 17 patents on power conversion and often publishes papers in conferences and trade magazines.
Articles written by Christophe Basso in How2Power Today:
02/17/17Understanding Op Amp Dynamic Response In A Type-2 Compensator (Part 2): The Two Poles
01/15/17Understanding Op Amp Dynamic Response In A Type-2 Compensator (Part 1): The Open-Loop Gain
01/15/16Modeling The Effects of Leakage Inductance On Flyback Converters (Part 3): The Small-Signal Model
12/17/15Modeling The Effects of Leakage Inductance On Flyback Converters (Part 2): The Average Model
11/16/15Modeling The Effects of Leakage Inductance On Flyback Converters (Part 1): Converter Switching
04/15/14The Small-Signal Model Of An Active-Clamp Forward Converter (Part 3): Active-Clamp Forward Converter Transfer Function
03/14/14The Small-Signal Model Of An Active-Clamp Forward Converter (Part 2): Active-Clamp Forward Converter Operation
02/14/14The Small-Signal Model of An Active-Clamp Forward Converter (Part 1): Basics of The Forward Converter And Its Transfer Function
03/15/13Simplified Analysis Of A DCM Boost Converter Driving An LED String Part II: Practical Considerations
02/15/13Simplified Analysis Of A DCM Boost Converter Driving An LED String Part I: Theoretical Analysis
01/31/11The Over-Power Phenomenon in DCM/CCM-Operated Flyback Converters (Part 4): The Leakage Inductor Contribution
12/16/10The Over-Power Phenomenon in DCM/CCM-Operated Flyback Converters (Part 3): Quasi Square-Wave Resonant Mode
11/23/10The Over-Power Phenomenon in DCM/CCM-Operated Flyback Converters (Part 2): Fixed-Frequency CCM Operation
10/22/10The Over-Power Phenomenon In DCM/CCM-Operated Flyback Converters (Part 1)
12/15/09Loop Control: Hand Calculations Or Automation?

Ali M. Bazzi
Ali M. Bazzi received the B.E. degree in electrical engineering in June 2006 (with high distinction), and the M.E. degree in electrical engineering in July 2007 from the American University of Beirut, Lebanon. Since August 2007, he has been pursuing the Ph.D. in electrical engineering at the University of Illinois at Urbana-Champaign.His research interests are power electronics applications in motor drives and renewable energy, mainly in the fields of control and optimization. He was the conference director of the 2010 Power and Energy Conference at Illinois, and is currently the chair of the IEEE PELS/PES joint Student Chapter at the University of Illinois at Urbana-Champaign. He is a student member of the IEEE, and a member of the IEEE Power Electronics Society, and IEEE Industry Applications Society, and IEEE Power and Energy Society.
Articles written by Ali M. Bazzi in How2Power Today:
06/29/10Comprehensive Flux Estimator Implementation Procedures For Advanced Control Of Inverter-Fed Induction Machines

Bob Bell
Robert (Bob) Bell is the applications engineering manager for the National Semiconductor design center in Phoenix, Ariz. Products designed at the Phoenix design center include integrated switching regulators, next-generation PWM power controllers, gate drivers, and hot-swap and load-share controllers. He has been with National Semiconductor since September 2001. Prior to joining National, Bob designed power converters for military and space applications. Bob holds a Bachelor of Science degree in Electronic Engineering from Fairleigh Dickinson University. To date he has published 25 power design articles, 8 conference papers and 3 patents.
Articles written by Bob Bell in How2Power Today:
06/14/13Boost Power Converters Finally Get Some Respect!
03/30/10Digital Isolators: A Space-Saving Alternative to Gate-Drive Transformers in DC-DC Converters
01/26/10Increase Boost Regulator Efficiency With Synchronous Rectification
09/17/09Frequency Dithering: A Tool for Overcoming Last-Minute EMC Hurdles

Dakshina Murthy Bellur
Dakshina Murthy Bellur received his BE degree in electrical engineering from Visveswaraiah Technological University, Belgaum, India, and MS from Wright State University, Dayton, OH in 2003, and 2006, respectively. He is currently pursuing PhD at Wright State University. His areas of interest are PWM dc-dc converters, resonant power converters, high-frequency magnetics, and renewable energy systems.
Articles written by Dakshina Murthy Bellur in How2Power Today:
02/19/10An Overview and Simulation of DC-DC-AC and Z-Source Grid Connected Inverters

John Bendel
John Bendel is power systems engineer at Element Energy. John is a power electronics industry veteran with extensive experience in applying system knowledge in a business context. He has worked as a senior vice president at Fairchild Semiconductor running the Low-Voltage Business Group addressing the computer, mobile and industrial markets. He has also worked as an individual contributor in application and design work for Lockheed-Martin and Siliconix addressing the aerospace and automotive markets. He holds a B.S. degree in electrical engineering from the University of California at Davis.
Articles written by John Bendel in How2Power Today:
08/15/14Cascode Configuration Eases Challenges Of Applying SiC JFETs In Switching Inductive Loads
12/20/12Hardware-Software Architecture Improves Performance Of Large, Battery-Powered Systems

John Betten
John Betten is an applications engineer and a senior member of Group Technical Staff at Texas Instruments, and has more than 29 years of ac-dc and dc-dc power conversion design experience. John received his BSEE from the University of Pittsburgh and is a member of the IEEE.
Articles written by John Betten in How2Power Today:
05/15/14Synchronous Zeta Converter Outperforms The SEPIC

Giuseppina Bille’
Giuseppina Bille’ has been with STMicroelectronics in Catania, Italy since 1998. She works as an analog IC design engineer developing voltage regulators and power management products. Bille’ received a degree in electronics from Catania University.

Ashok Bindra
Ashok Bindra is a veteran writer and editor with more than 25 years of editorial experience covering RF/wireless technologies, semiconductors and power electronics. He has written, both for print and the web, for leading electronics trade publications in the U.S, including Electronics, EETimes, Electronic Design and RF Design. Presently, he has his own technical writing company called Technika through which he does writing projects for different trade publications and vendors. Prior to becoming an editor, Bindra worked in industry as an electronics engineer. He holds an M.S. degree from the Department of Electrical and Computer Engineering, Clarkson College of Technology (now Clarkson University) in Potsdam, NY, and an M.Sc (Physics) from the University of Bombay, India. He can be reached by email at bindra1[at]verizon.net.
Articles written by Ashok Bindra in How2Power Today:
10/15/13GaN Suppliers Continue to Push the Performance Envelope
09/16/13GaN Power Modules Promise to Raise the Performance Bar
08/15/13Transitioning To SiC-Based Devices Is Not That Simple
06/15/13GaN Power Devices Transition To Production Phase
05/15/13As Applications Emerge, SiC Technology Charts A Growth Path
04/15/13Summit Showcases GaN Developments For Improving EVs, Lighting, And Solar Power
03/15/13High-Voltage SiC Devices Aim To Revolutionize Utility-Scale Power Conversion
02/15/13APEC 2013 Demos Announce The Emergence Of GaN-based Power Solutions
01/17/13APEC 2013 To Reveal Latest Advances In Power Semiconductor Devices
12/20/12GaN-on-Si Based FETs Foster New Applications
11/21/12As All-SiC Module Emerges, GaN Powers Server Supplies
05/24/12RFMD Leverages RF GaN Capability To Build Power HEMTs
03/30/12As GaN Power Preps For Production, More Suppliers Enter The Fray
05/27/11GaN Transistors Make Inroads Commercially While Technology Expands To Higher Voltages
04/29/11Emerging High-Voltage Apps Accelerate Silicon Carbide Growth

Carl Blake
Carl Blake is vice president of marketing at Transphorm. Blake began his career with Raytheon as a power systems design engineer, gaining experience in power supply, RF and logic design. Over the next 19 years, he progressed through many levels of the organization before moving to the semiconductor industry in 1991, bringing customer understanding to the new product definition process. Blake has successfully launched hundreds of new products and technologies in the power industry. In addition, he served as co-chair of the Technology Roadmap committee of the Power Sources Manufacturers Association (PSMA), and was recently elected as PSMA president. Blake received his Bachelor of Science degree in Electrical Engineering summa cum laude at the University of New Haven.
Articles written by Carl Blake in How2Power Today:
04/15/16Clearing Up Confusion About GaN Power Transistors (Part 2): Proving Power GaN Reliability
03/15/16Clearing Up Confusion About GaN Power Transistors (Part 1): Marketer, Scientist Or Engineer—Who Should You Believe?
04/15/13GaN Power Devices Slash Size, Raise Efficiency Of 4-kW Solar Inverter

Joe Bond
Joseph A. Bond is currently the operations and engineering manager at Electronic Concepts (ECI) where he has worked since 1994. In his role as operations manager for ECI’s corporate headquarters, he oversees the primary design and production facility in New Jersey, while as the engineering manager for ECI New Jersey, he manages product design, process design, and production engineering. Bond also serves as general manager of the ECI Film Division in Massachusetts, corporate officer (secretary) for Energy Storage Corporation; and materials research director for new polymer dielectric development. Bond has published a number of papers and presentations on film capacitors and holds one patent. He is also a member of multiple engineering-focused organizations including IEEE, CPES, WEMPEC, and DOE Freedom car development. Bond has completed coursework in electrical engineering at Monmouth University and in civil engineering at Virginia Tech. He also holds a degree in business management from University of Phoenix.
Articles written by Joe Bond in How2Power Today:
10/15/15Film Capacitors For High Temperature Switches And Power Electronics Applications Above 125°C*

Cyril Borchard
Cyril Borchard is a product marketing engineer responsible for rectifiers in the power segment at STMicroelectronics, France. He was previously in charge of marketing activities for rectifiers, protections, IPAD, thyristors and triacs in the consumer segment. In that scope, Cyril Borchard participated as marketing representative in the development of dedicated rectifiers for flat-panel displays (LCD and PDP) as well as specific protections and IPAD for consumer applications such as HDMI. Cyril Borchard holds a degree in Microelectronics and Automation from the Ecole Polytechnique de Montpellier.
Articles written by Cyril Borchard in How2Power Today:
01/26/10PFC Efficiency Improvement Using SiC Power Schottky Rectifiers

Vipin Bothra
Vipin Bothra is product marketing manager at STMicroelectronics based in Schaumburg, Ill. Over the years Vipin has held many roles at ST in application, marketing and technical marketing. He holds an MBA from the Kellogg School of Management and a Bachelors degree in Electrical Engineering from VNIT, India. Vipin’s technical experience includes designing various applications in power conversion such as digital power supplies, drivers for LED lamps, high-efficiency solar inverters and PFCs. The Triac-dimmable offline LED driver was developed by Vipin and his team and received a patent in 2008. Vipin has authored many publications in technical publications around the world and has actively participated in many regulatory and standard-setting bodies in the U.S.
Articles written by Vipin Bothra in How2Power Today:
10/25/12Process, Packaging Combine To Advance High-Voltage Power MOSFETs

John Bottrill
John Bottrill is a senior applications engineer at Texas Instruments in Manchester, NH. John supports customers and evaluates new ICs before release. In doing so, he has produced more than 20 technical papers and has two patents to his credit. He received his B. Sc. in Electrical Engineering from Queen’s University at Kingston, Ontario, Canada. You can reach John at ti_johnbottrill@list.ti.com.
Articles written by John Bottrill in How2Power Today:
04/30/12How To Correct Voltage Imbalance In Half-Bridge Converters Under Current-Mode Control
02/28/11Primary-Side Current Monitoring Won’t Stop Overcurrents In DCM-Operated Flybacks
07/24/09Don't Let Jitter Shake Up Your Flyback Converter Designs

David Bour
David Bour, chief scientist and head of MOCVD at Avogy has worked for nearly 30 years on semiconductor electronics and optoelectronics, and metal organic chemical vapor deposition, including UV-blue-green GaN-based LEDs and laser diodes, red AlGaInP lasers, telecommunication devices, strained quantum well lasers, mid-IR quantum cascade lasers, heterojunction bipolar transistors, and photovoltaic devices. Before Avogy, Bour was the chief technology officer of Applied Materials’ Solid State Lighting Division and held positions at BridgeLux, Xerox Palo Alto Research Center’s Electronic Materials Laboratory, Alta Devices, and Agilent Laboratories. Bour received a B.S. degree in Physics from MIT in 1983 and a Ph.D. degree in Electrical Engineering from Cornell University in 1987. His research is documented in more than 200 publications and 90 U.S. patents; and he is a fellow of the IEEE, for contributions to the growth and understanding of quantum well lasers.
Articles written by David Bour in How2Power Today:
03/15/13Vertical Devices In Bulk GaN Drive Diode Performance To Near - Theoretical L imits

Oliver Brennan
Oliver Brennan is a senior IC design engineer with Analog Devices where has worked for 12 years. He currently works on Power Management Products. Previously, Oliver worked on data converters.
Articles written by Oliver Brennan in How2Power Today:
09/17/09Switching-Regulator Insights: Achieving Longer Battery Life in DSP Systems

Tu Bui
Tu Bui is the applications engineering manager for Industrial and Infrastructure Products at Intersil. He is responsible for switching regulator product development and all related customer applications support. Prior to joining Intersil, Bui was a member of technical staff design engineer at AT&T Bell Labs, where he developed and released more than twenty world-class products and product families. Bui holds a BSEE from the University of Arizona, and a Master of Engineering Management from Southern Methodist University.
Articles written by Tu Bui in How2Power Today:
05/15/15Output Tracking And Sequencing Improve FPGA Reliability

Frank Cathell
Frank Cathell has been a senior applications engineer with ON Semiconductor for over 6 years. Frank has worked in the power electronics industry for over 35 years and has obtained several patents for power conversion circuits and has written numerous articles and/or papers on the subject. Frank’s previous employment has included Lambda Electronics, International Power Systems, Maxwell Laboratories, Tectrol Inc. and others in addition to his own past consulting business.
Articles written by Frank Cathell in How2Power Today:
05/27/10Power Supply Topology Selection – It’s Not Just About Power

Jennifer Cheney
Jennifer Cheney is a senior applications engineer at Keithley Instruments, headquartered in Cleveland, Ohio, which is part of the Tektronix test and measurement portfolio. Cheney earned a Bachelor of Science degree in electrical engineering from Case Western Reserve University in Cleveland. She has been assisting Keithley customers with instrument applications since 2001.
Articles written by Jennifer Cheney in How2Power Today:
03/13/15Interface Panel Addresses Special Connection Challenges In On-Wafer Testing Of Power Semiconductor Devices

Ron Chiang
Ron Chiang is the R&D director of Enargy Power Corp. based in the China Design Center in Shenzhen. Chiang has more than a decade of experience in dc-dc and ac-dc power supply design. Prior to joining Enargy, Ron was R&D manager with Emerson Network Power (now Artesyn Embedded Power) where under his leadership, more than 300 products were developed for telecom, medical, industrial and consumer applications. Chiang has a masters degree in power electronics from ZheJiang University.
Articles written by Ron Chiang in How2Power Today:
01/15/16Medical AC-DC Power Supplies Are Becoming More Specialized

Arthur Chiang
Arthur Chiang currently holds the position of director of reliability engineering for Vishay Intertechnology. He is a member of IEEE, AEC, JEDEC, and EDFAS, and holds numerous patents in emission microscopy and power diodes. Mr. Chiang holds an M.S. in electrical engineering from Stony Brook University and a Ph.D. in electrical engineering and computer science from Princeton University.
Articles written by Arthur Chiang in How2Power Today:
03/30/12Failure Analysis On Power MOSFETs With Copper Wire Bonds

Vijay Choudhary
Vijay Choudhary is an applications engineer at National Semiconductor’s Phoenix Design Center. At National Semiconductor, Vijay has worked on wireless charging and power management ICs for mobile devices. He currently works on isolated and nonisolated switching converters for industrial applications. Vijay has a Bachelor of Technology from Indian Institute of Technology, Kharagpur, and a Master of Science and PhD from Arizona State University. Vijay has written several papers, application notes, and articles in the field of power management.
Articles written by Vijay Choudhary in How2Power Today:
02/15/13Synchronous Buck Converter Enables Multiple Bias Rails And Input Voltage Sensing For Isolated Applications
05/27/11Simple Stepdown Regulator Generates Multiple Voltage Rails With Good Efficiency and Regulation

Steve Clemente
Steve Clemente joined International Rectifier (IR) in 1980, after working in the Numerical Control Division of General Electric and the Corporate R&D of Westinghouse. In his 30+ years at IR, Clemente has held several managerial positions in Applications, R&D and Systems Engineering.
Articles written by Steve Clemente in How2Power Today:
04/15/13Enhanced Web Tool Speeds IGBT Selection, Matching Device To The Application

Don Corey
Don Corey joined Maxim Integrated in 2006 and is a principal member of technical staff, field applications. He has over 30 years of analog electronic design experience. He got his BSEE from Central New England College.
Articles written by Don Corey in How2Power Today:
02/15/15Choose The Right Regulator For The Right Job (Part 1)
02/15/15Choose The Right Regulator For The Right Job (Part 2)
02/15/15Choose The Right Regulator For The Right Job (Part 3)

Mala D. M.
Mala D. M. currently holds the position of hardware engineer for Strategic Technology Group. She has a B.E. in Electrical and Electronics and M.Tech in Power Electronic Systems and controls from Manipal University. She has teaching experience in power electronics. Her interests include design and firmware development of permanent magnet motor control for electric vehicles, switch-mode power supplies, simulation, and electromagnetic design and analysis.
Articles written by Mala D. M. in How2Power Today:
04/30/12Selecting A DSP Controller For Brushless Permanent Magnet Motor Drives

Barry Dagan
Barry Dagan, P. E. is chief technology officer of Cool Innovations. Barry has more than 25 years of experience in thermal management design and holds multiple patents in this area.
Articles written by Barry Dagan in How2Power Today:
02/19/10Flared Pin Fin Heat Sink Keeps LED Light Burning Brightly

Pierre Delatte
Pierre Delatte is CTO and one of the co-founders of CISSOID. With 15 years of experience in high-temperature integrated circuit (IC) design, he is in charge of the technical development and vision of the company. Delatte is also in charge of advanced R&D programs at Cissoid. Delatte holds a Master of Science in Electrical Engineering from Université Catholique de Louvain.
Articles written by Pierre Delatte in How2Power Today:
08/31/11Designing Power Converters For 100°C+ Environments: Why Use 225°C-Rated Power Components?

Rakesh Dhawan
Rakesh Dhawan is a twenty years veteran of Power Electronics Industry. Rakesh has a BTech in Electrical Engineering from the Indian Institute of Technology, Kharagpur, a Masters’ of Electrical Engineering (MSEE) from the University of Minnesota, and an MBA from Old Dominion University, Virginia. Rakesh has been an entrepreneur who has built several high-quality technology businesses. Rakesh has six approved and filed patents and twenty five conference and journal publications to his credit. Rakesh founded Strategic Technology Group to further his passion in power electronics. His interests include electric bicycles, electric vehicles, permanent magnet brushless motor drives, switch-mode power supplies, solar inverters, simulation, statistics, project management and new and ultra-fast product development. Rakesh has built and managed several high-technology product development teams in his career. He has been directly responsible for over twenty five product launches.
Articles written by Rakesh Dhawan in How2Power Today:
12/16/10Current Flow Analysis in Permanent Magnet Brushless DC (BLDC) Motor Control Using PSpice
07/30/10Integrating Statistics and Manufacturing Data into Simulation of Permanent Magnet Motor Drives

Giuseppe Di Stefano
Giuseppe Di Stefano is a technical marketing manager in the Industrial & Power Conversion Business Unit of STMicroelectronics. He is based in Catania (Italy). Di Stefano joined the company in 1982 and covered different roles inside ST: application engineer for small-signal and medium-power transistors, hardware development engineer for advanced testing, marketing engineer for automotive smartpower devices, and finally technical marketing manager for intelligent power switches (IPS) for industrial. He is the author of several technical articles concerning smartpower devices, presented in international conferences and technical magazines.
Articles written by Giuseppe Di Stefano in How2Power Today:
11/30/11Use Intelligent High-Side Power Switch To Satisfy Safety Requirements In Process Control And Industrial Automation

Cristian Dinca
Cristian Dinca received his Diploma degree and Master’s degree in electronic and engineering from the University Politehnica Bucuresti, Romania in 2006 and 2008. Cristian Dinca is currently working at ON Semiconductor Romania as an analog IC designer dealing with low dropout regulators.
Articles written by Cristian Dinca in How2Power Today:
05/24/12Internal LDO Circuit Offers External Control Of Current Limiting

Kelly Ding
Kelly Ding joined Integrated Device Technology (Shanghai) Co., Ltd. in 2002 and now serves as a marketing manager. Kelly holds B.S. degrees in English of science and technology as well as computer science from Shanghai Jiao Tong University.
Articles written by Kelly Ding in How2Power Today:
05/27/11Energy Meter Design Operates Accurately Over Wide Current Range

Lisa Dinwoodie
Lisa Dinwoodie is an applications engineer at Texas Instruments where she supports customers, evaluates new ICs before release, and designs evaluation modules for customer use. Lisa has more than 16 years in the power supply design industry. She received her B.Sc. in Electrical Engineering from Northeastern University in Boston, Massachusetts. You can reach Lisa at ti_lisadinwoodie@list.ti.com.
Articles written by Lisa Dinwoodie in How2Power Today:
02/28/11Primary-Side Current Monitoring Won’t Stop Overcurrents In DCM-Operated Flybacks

Don Disney
Don Disney is the senior director of technology and product development at Avogy. He received his BSEE from Kettering University and PhD EE from Stanford University, and subsequently has held senior engineering and management positions at Delco Electronics, Power Integrations, Advanced Analogic Technologies, and Monolithic Power Systems. Disney’s contributions to the field of power semiconductors span many technologies, including silicon-on-insulator power devices, IGBTs, high-voltage integrated circuits, Bipolar-CMOS-DMOS, and power MOSFETs. He has authored several IEEE papers and more than 100 U.S. patents.
Articles written by Don Disney in How2Power Today:
03/15/13Vertical Devices In Bulk GaN Drive Diode Performance To Near - Theoretical L imits

Frederik Dostal
Frederik Dostal joined Analog Devices in 2009 and currently works as the power management technical marketing engineer for Europe. Dostal began working in the power management field in 2001. Since this time he has been active in various power management applications positions including four years in Phoenix, Arizona where he worked on switched-mode power supplies. Dostal studied microelectronics at the University of Erlangen, Germany.
Articles written by Frederik Dostal in How2Power Today:
12/17/15Reducing Noise Generated By Switching Regulators

Alex Dumais
As an applications engineer for Microchip’s 16-bit Microcontroller Division, Alex Dumais supports Microchip’s dsPIC digital signal controllers (DSCs) for switch-mode power supplies. He is involved in product definition, device validation, creating training and documentation collateral, as well as customer support. He also designs and develops power-supply reference designs, such as those for ac-dc converters, dc-dc converters, lighting and solar applications, to demonstrate the capabilities of the DSCs. Alex received his bachelor’s degree from Arizona State University and has since been working in the power-electronics field supporting digital control.
Articles written by Alex Dumais in How2Power Today:
03/15/16Improving Loop-Gain Performance In Digital Power Supplies With Latest-Generation DSCs

John Dunn
John Dunn is a licensed professional engineer in the State of New York. He has had over forty-five years of design experience in services to over a dozen military and industrial corporations in multiple electronic disciplines including analog (low noise audio, power audio, temperature measurement, electrocardiogram recordings, etc.), power supplies (low voltage to 100 A and high voltage to 100,000 V), HF/VHF/UHF equipment, uP development and debugging, test instrument design and test program development. John has had more than forty technical items published in the trade journals. Items appearing in Electronic Design Magazine's "Ideas For Design" column won their "Best Of The Issue" award on four occasions. John is also the founder of the LinkedIn group Analog Developments and has lectured adult classes in mathematics and in electronics theory.
Articles written by John Dunn in How2Power Today:
10/27/11Use Exponential Equations And A Simple Program To Solve Power Supply Problems

Andrew Edwards
Andrew Edwards is simulation and modeling manager at Avogy and has been involved with GaN since 1994. Prior to Avogy, Edwards was a device engineer at International Rectifier and before that, at Nitronex. Andrew has a bachelor’s degree from Virginia Tech, and masters and Ph.D. from George Mason University. Edwards also served as a postdoctoral researcher at the Naval Research Laboratory in Washington D.C.
Articles written by Andrew Edwards in How2Power Today:
03/15/13Vertical Devices In Bulk GaN Drive Diode Performance To Near - Theoretical L imits

Harold Eicher
Harold Eicher is VP of engineering at Champs Technologies, a company which he founded in 2005. In this role he has designed planar magnetics for telecom, industrial, computer and avionics markets. From 1985 to 2005, Eicher was the VP of engineering at Magnetico, which he also founded. At Magnetico, Eicher designed and developed magnetics and electronics for avionics, military, and space satellite markets. Eicher sold this company in Dec 2003 to Standex Electronics, but continued consulting through June 2005. Previously, Eicher was an engineer at AVM where he performed magnetics design and field application engineering. Eicher studied at Boston College where he obtained an AB degree in economics and political science, and then studied law, receiving a JD degree in 1979 from the Saint Louis University School of Law.
Articles written by Harold Eicher in How2Power Today:
12/16/10Embed Your Planar Magnetics To Maximize DC-DC Converter Performance (Part 3): The Bias Supply
10/22/10Embed Your Planar Magnetics To Maximize DC-DC Converter Performance (Part 2)
09/24/10Embed Your Planar Magnetics To Maximize DC-DC Converter Performance (Part 1)

John Ely
John Ely, with more than 18 years of experience in industrial and consumer marketing, serves as marketing director for AMETEK Solid State Controls, a manufacturer of customized inverters and UPS systems. Armed with both a master’s degree in marketing and communications, a bachelor’s degree in technical management and an associate’s degree in electrical engineering, Ely also is a professor of marketing at Franklin University in Columbus, Ohio, and has authored several articles on business development.
Articles written by John Ely in How2Power Today:
02/16/16Custom UPS Software Allows Greater System Control For Pipeline Clients

Anthony Esposito
CEO and owner of Avatar Engineering Corporation, Anthony Esposito, has over 30 years of experience in power conversion and precision instrumentation for all markets; consumer, industrial, telecommunications, green-power, medical, military, and space. Present activities include new semiconductor research, high-efficiency converters for military and fuel cell applications, and RF-thermal therapy systems for treatment of cutaneous cancer and other malignancies. Prior work includes medical MRI gradient amplifier and systems design, telco cell site power systems design, as well environmental controls design for NASA's original Enterprise Shuttle. The New Product Development (NPD) software, "EQuote" (short for Engineering Quote) has been used extensively by the SBA and Harvard Business. Mr. Esposito resides in Arizona, is degreed in electrical engineering, business, and computer science, has numerous patents in power controls and communications, and often mentors young engineers from ASU on the joys of analog design and entrepreneurship.
Articles written by Anthony Esposito in How2Power Today:
07/15/15Advantages Of GaN FETs Versus “Best Of Breed” Silicon MOSFETs
01/31/11Synergy: SEPIC-Cuk Combo Illustrates Benefits of Creative Thinking

Haifeng Fan
Haifeng Fan is a systems engineer with Texas Instruments’ Power Products Business Group where he is responsible for new product definition, systems modeling and simulation, evaluation module (EVM) designs, new product promotion, and customer technical support. Haifeng received his Ph.D. in electrical engineering from Florida State University, Tallahassee, Florida; his MSEE from Zhejiang University, Hangzhou, China, and his BSEE from Huazhong University of Science and Technology, Wuhan, China.
Articles written by Haifeng Fan in How2Power Today:
03/15/14Design Considerations For DCR Current Sensing In Boost Converters

Eric Faraci
Eric Faraci is a systems and applications engineer with the GaN Product Development group at Texas Instruments where he is responsible for defining and designing power products that take advantage of GaN. Eric received his BSEE and MSEE from Virginia Tech, Blacksburg, Virginia and he can be reached at ti_ericfaraci@list.ti.com.
Articles written by Eric Faraci in How2Power Today:
07/15/15Designing Offline LED Drivers With GaN

Andrew Ferencz
Andrew Ferencz received his SB and SM degrees from MIT in 1987 and 1989. He was previously the VP, Technology at Galaxy Power in Westborough, Mass., developing high power density dc-dc converters. Prior to that, Andrew was the VP, Engineering at Acumentrics in Westwood, Mass. For the last eighteen months he has been self-employed, working on various projects as a turnkey design engineer and consultant in the medical, military, commercial, and industrial markets.
Articles written by Andrew Ferencz in How2Power Today:
03/30/12Magnetically Isolated Digital Coupling Circuit Solves Gate Drive and Communications Dilemmas

Dennis Feucht
Dennis Feucht has been involved in power electronics for 20 years, designing motor-drives and power converters. He has an instrument background from Tektronix, where he designed test and measurement equipment and did research in Tek Labs. He has lately been doing current-loop converter modeling.
Articles written by Dennis Feucht in How2Power Today:
05/16/17Magnetics Optimization (Part 4): Minimization Of Transductor Power Loss
04/17/17Magnetics Optimization (Part 3): Maximum Power Transfer Of Magnetics Circuit Model
03/17/17Eddy-Current Effects In Magnetic Design (Part 6): Winding Bundles
02/17/17Eddy-Current Effects In Magnetic Design (Part 5): Winding Design Optimization
01/16/17Eddy-Current Effects In Magnetic Design (Part 4): Dowell’s Formula
11/16/16How To Calculate Winding Packing Factor
10/17/16Eddy-Current Effects In Magnetic Design (Part 3): Conductor Cross-Sectional Geometry
09/15/16Performance Parameters Lead To The Optimal Converter
09/15/16Eddy-Current Effects In Magnetic Design (Part 2): The Proximity Effect
08/15/16Eddy-Current Effects In Magnetic Design (Part 1): The Skin Effect
06/15/16Sizing Your Power Converter’s Magnetics (Part 3): Transformer Power Rating With An Input Voltage Range
05/16/16Sizing Your Power Converter’s Magnetics (Part 2): Inductor Power Rating With An Input Voltage Range
04/18/16Sizing Your Power Converter’s Magnetics (Part 1): Inductor Power Rating With Fixed Input Voltage
12/17/15Understanding Power Flow In Ćuk Converters
09/16/15Magnetics Optimization (Part 2): Maximum Power Transfer Of The Primary-Referred Circuit
09/15/15Magnetics Optimization (Part 1): Equal Core And Winding Losses Do Not Maximize Power Transfer
08/17/15Area-Product Method Can Simplify Core Selection—But Beware Of The “Constants”
04/16/15Determining Maximum Usable Switching Frequency For Magnetics In CCM-Operated Converters
03/13/15The Shape Of Optimal Magnetics: Why Flatter Is Better
01/15/15Common-Mode Transformer Aids Noise Reduction In High-Power Supplies
11/14/14An Analytical Approach To Modeling RC Snubbers And Clamps In Inductive Power Circuits
07/15/14Ripple Steering Can Enhance Magnetics Circuit Function Through Ripple Reduction
05/15/14What Is To Be Optimized In Magnetic Component Design?
03/14/14Single-Bundle Windings Make It Easier To Build Custom Magnetics In-House
02/15/14Text Reveals Circuit A nd System Knowledge For Designing Grid - Connected Converters In Renewable Energy Systems
02/15/14Understanding Tradeoffs In Core Geometry Aids Transductor Design
09/16/13How To Calculate Toroid Winding Length
07/15/13How Not To Observe Magnetic Saturation
06/14/13New Twist On The Half-Bridge Converter Solves Subtle Failure Mode
05/15/13How To Choose Magnetic Core Size
02/15/13How To Choose Between Ferrite Or Powdered-Iron Cores: A Case Study
11/21/12How To Minimize Core Saturation
05/24/12Why Use The Refined Model Of Current-Loop Converter Control?
03/30/12Current-Loop Control In Switching Converters Part 7: Fm0 In Models
02/29/12Current-Loop Control In Switching Converters Part 6: Slope Compensation
01/27/12Current-Loop Control In Switching Converters Part 5: Refined Model
12/22/11Current-Loop Control In Switching Converters Part 4: Clarifications Of Existing Models
11/30/11Current-Loop Control in Switching Converters Part 3: Waveform-Based Model Dynamics
10/27/11Current-Loop Control In Switching Converters Part 2: A Waveform-Based Model
09/27/11Current-Loop Control In Switching Converters Part 1: Historical Overview
08/31/11Aspiring Power Electronics Engineers Must Master Four Aspects Of Converter Design
08/31/11Aspiring Power Electronics Engineers Must Master Four Aspects Of Converter Design
07/27/11Why Use Aluminum Wire?
03/30/11Match Circuit And Field Resistances For Optimal Magnetics Design
02/28/11Utilizing Full Saturation and Power Loss To Maximize Power Transfer In Magnetic Components
07/30/10Rediscovering The Integrated-Magnetics Isolated Ćuk Topology

William Fox
William Fox is the senior design engineer at AMETEK Solid State Controls in Columbus, Ohio. His industry experience spans more than 30 years, including the past eight years with AMETEK. He previously served in key engineering positions with Vanner, Encore Networks (formerly Fastcomm Communications), Lockheed Martin and IBM. Fox holds an BSEE from Clemson University as well as an associate of science degree in electrical engineering technology from Greenville, SC Technical College.
Articles written by William Fox in How2Power Today:
02/16/16Custom UPS Software Allows Greater System Control For Pipeline Clients

Randy Frank
Randy Frank has more than 30 years of industry experience in electronics and semiconductors at companies that include Chrysler, Motorola and International Rectifier, where he was involved with product engineering, marketing and applications. At American Motors, now part of the Chrysler Group LLC, he was responsible for implementing their first electronic engine control systems. Randy was the product manager for SMARTMOS ICs at Motorola, now Freescale Semiconductor, when its first power ICs were introduced. He has written on a variety of topics from power semiconductors and ICs to microcontrollers and digital signal processors. Randy is a Society of Automotive Engineers (SAE) Fellow and an IEEE Fellow. He has an MSEE, MBA and BSEE from Wayne State University in Detroit, MI.

Dave Freeman
David Freeman is a Texas Instruments Fellow and engineering manager in Texas Instruments’ Power Management business unit where currently he manages TI’s Solar Energy Systems Lab. This lab focuses on methods that increase the delivered power from solar energy systems as well as provide monitoring and management for improved reliability and safety. David’s 35-year career has always focused on energy sources and energy management. David is a popular expert in his field who has presented at many conferences around the world, including in the U.S., China and Japan. He has written multiple technical papers and a monthly column in a publication targeted to electrical engineers. Many patents in battery technology and power management have been credited to David’s efforts. David has a BS degree in physics from Midwestern University. He can be reached at ti_davefreeman@list.ti.com.
Articles written by Dave Freeman in How2Power Today:
06/24/11Solar Microconverter Implements Novel MPPT Algorithm

Giovanni Frezza
Giovanni Frezza joined STMicroelectronics in 1999 after he received a Master of Science Degree in physics from the University “La Sapienza” of Rome, Italy in 1998. After several years working on MEMS, advanced packaging and sensors as R&D team leader, he focused on industrial application-specific products in the Technical Marketing organization. Today, he is a technical marketing manager in the Americas region based in Schaumburg, Illinois, USA.
Articles written by Giovanni Frezza in How2Power Today:
01/27/12System-On-Chip Architecture Raises Performance Of Microstepping Motor Driver Designs

Veda Prakash Galigekere
Veda Prakash Galigekere received the B.E, M.S Degrees from Visveswaraiah Technological University, Belgaum, India and Wright State University, Dayton, Ohio in 2004 and 2007, respectively. He is currently pursuing his PhD at Wright State University. His areas of interests are PWM dc-dc and dc-ac inverters, power semiconductor devices, renewable energy systems and system-level simulations of the same.
Articles written by Veda Prakash Galigekere in How2Power Today:
12/22/11Power Electronic Circuitry In LED Modules: An Overview
02/19/10An Overview and Simulation of DC-DC-AC and Z-Source Grid Connected Inverters

Wanda Garrett
Wanda Garrett is a senior member of the Technical Staff at Texas Instruments. She is an applications manager in the WEBENCH Design Center, and has designed a wide variety of power supply circuits while part of the WEBENCH team as well as in several National Semiconductor product lines.
Articles written by Wanda Garrett in How2Power Today:
04/15/15Automated Tools Improve Frequency Response In Switching Regulators

Frederic Gautier
Frederic Gautier is an application engineer at STMicroelectronics, France. He has been an expert in switched-mode power supply applications and the industrial and power segments within the Application & System Engineering department since 1998. Frederic Gautier graduated with a technical degree in electronics and holds several patents in the switched-mode power supply domain within STMicroelectronics.
Articles written by Frederic Gautier in How2Power Today:
01/26/10PFC Efficiency Improvement Using SiC Power Schottky Rectifiers

Profirescu Ovidiu George
Profirescu Ovidiu George is a design engineer at ON Semiconductor Romania, with seven years of experience in design, verification and validation of analog integrated circuits. He has actively participated in the development of several LDO product families. George is also involved in academic activities as an assistant professor at the University Politehnica of Bucharest, Electrical Engineering Department where he teaches Electronic Devices and Circuits, TCAD, Device and Process Simulation, using industry-standard simulators and equipment. George graduated from the University Politehnica of Bucharest in 2006 as an “Advanced Microelectronics” Master and also from the University Politehnica of Bucharest in collaboration with Infineon Technologies in 2008. Since 2007 George has been a PhD student.

Peter Green
Peter Green received a BSc degree in electrical engineering from Queen Mary College, University of London in 1985. Since then he has worked in product design and development for commercial and military companies in the power supply and lighting industries in the UK. He is a member of the Institution of Engineering and Technology and a Chartered Engineer. In 2001 he relocated to California to join the Lighting Design Center at International Rectifier where he has worked on new lighting ASIC definition and design, as well as application support. Peter is currently managing LED systems and applications. Peter has previously presented at APEC, PCIM and many other conferences and has several patents related to lighting electronics.

Paul Greenland
Paul Greenland is a power industry veteran with over thirty years’ experience in the design, application and marketing of power conversion systems. His designs range from dc-dc converters in the first cellular phones to ion propulsion systems in satellites. Paul is an avid radio amateur, dedicated to the proliferation of power electronics know-how across a wide variety of applications.
Articles written by Paul Greenland in How2Power Today:
12/20/12Impact Of High-Performance Computing Technology On Power Conversion
11/21/12Understanding Industrial System Structures Is Key To Powering Them

Alberto Guerra
Alberto Guerra is vice president of product marketing and strategic market development at International Rectifier (IR) where he works on business development for new semiconductor material and new emerging power conversion technologies. Prior to this position, Alberto served as divisional vice president of IC & Integrated Product with Vishay Siliconix. Alberto moved to Vishay after over two decades with International Rectifier, during which time he successfully served as VP sales-marketing and application of IR’s Power Semi Business Unit, and previously as VP marketing and business development of IRSA Integrated Technologies. Alberto began his career in power electronics, after completing his degree in Nuclear Engineering in 1980, as a design engineer of automatic test equipment for electric motors and drivers in Turin, Italy. Alberto has written, and published several papers and articles covering the use of power semiconductor technology and related applications from low voltage dc-dc converters to high-voltage high-power components and EMI compatibility. He also five holds patents in packaging and power electronics technology..
Articles written by Alberto Guerra in How2Power Today:
01/16/14Modular Solution Simplifies Design Of PFC Front-End For Inverters In Energy-Efficient Air Conditioning Systems

Jason Guo
Jason Guo is a Fairchild Semiconductor senior applications engineer focusing on high-performance power conversion, web-based design tools, and tier-one customer support. He is based in San Jose, Calif. Prior to joining Fairchild, Jason worked at Semtech and Artesyn Technologies. Jason received an MSEE in power electronics from Virginia Tech.
Articles written by Jason Guo in How2Power Today:
02/15/15Partial BCM Mode Of Operation Improves Efficiency For Primary-Side Regulated Flyback LED Driver

Varun Kumar H
Varun Kumar H received his Bachelor’s of Engineering from Visvesvaraya Technological University, Belgaum, India in 2009. He has his MTech from MIT, Manipal University, Manipal, India, in Power Electronics Systems and Control. He is currently working as a hardware and simulation engineer at Strategic Technology Group, Pune, India. His areas of interests are power semiconductor devices, motor drives and control, and OrCAD/PSPICE (system-level simulations.)
Articles written by Varun Kumar H in How2Power Today:
04/30/12Selecting A DSP Controller For Brushless Permanent Magnet Motor Drives

Chad Hall
Currently serving as chief operating officer of Ioxus, Chad Hall has used his extensive mechanical engineering and business experience to take Ioxus from funding to factory to launch. Chad is responsible for manufacturing and testing of standard products, as well as further establishing the company and building the team, increasing sales, locating funding, and spurring continued product development. Chad is also responsible for educating the market on Ioxus products and training sales personnel on the technical aspects of the expanding product line. Chad spent 14 years with Ioxus’ parent company, Custom Electronics, Inc. (CEI). In addition, he has been involved in several high-voltage, high-reliability capacitor projects at national labs. Chad attended State University of New York, Delhi and received a 3-M certificate in electro-mechanical design and drafting. Chad is a member of the American Society of Mechanical Engineers (ASME).
Articles written by Chad Hall in How2Power Today:
10/22/09Ultracapacitors Give Lift to Material Handling

Sanjay Havanur
Sanjay Havanur is currently the principal applications engineer at Alpha & Omega Semiconductor, Inc. Since receiving his Master's Degree in Power Electronics and Drives at the Indian Institute of Technology, Mumbai in 1983, Havanur has gained extensive experience in the field of power electronics, having worked in design and applications in both India and the U.S. He has published papers and application notes in technical journals, and holds several patents relating to high-frequency power conversion. Sanjay Havanur's current interests include novel and efficient power conversion topologies, energy harvesting techniques and solar power.
Articles written by Sanjay Havanur in How2Power Today:
03/15/17Dealing With Nonlinear MOSFET Capacitances
04/15/16Beware Of Zero-Voltage Switching
08/15/15Demystifying Power MOSFET Voltage Ratings
04/15/15Application-Specific FOM: Key To Choosing The Right MOSFET
10/15/14How2 Turn On A MOSFET
12/15/09A Practical Look At Current Ratings

Timothy Hegarty
Timothy Hegarty is a principal applications engineer for the National Semiconductor design center in Tucson, Ariz. He received the B.E.(Elec.) and M.Eng.Sc degrees in Electrical Engineering from University College Cork, Ireland in 1995 and 1997, respectively. Prior to joining National, he worked for Artesyn Technologies designing isolated board-mounted brick converters. His areas of interest are integrated PWM switching regulators and controllers, LDOs, references, hot-swap controllers, renewable energy systems, and system-level simulation of same. Tim can be reached at Tim.Hegarty@ti.com.
Articles written by Timothy Hegarty in How2Power Today:
01/16/17Automotive Front-End Buck-Boost Regulator Actively Filters Voltage Disturbances
09/15/16Multi-Output Fly-Buck Regulator Offers Wide VIN, Isolation And Low EMI
03/15/16Vertically Stacked MOSFETs And Other Tricks For Building A High-Density 30-A Point-of-Load Regulator
09/15/15Optimizing The Efficiency Of The Four-Switch Buck-Boost Converter
03/13/15Streamlining Synchronous Buck-Boost Converter Design
07/15/14Current-Mode Control Stability Analysis For DC-DC Converters (Part 2)
06/13/14Current-Mode Control Stability Analysis For DC-DC Converters (Part 1)
11/15/13Inductor DCR Current Sensing With Temperature Compensation: An Accurate, Lossless Approach For POL Regulators
03/30/11Paralleling Electrolytic and Ceramic Capacitors Perks Up POL Transient Response
08/19/10SIMPLIS Simulation Tames Analysis of Stability, Transient Response, and Startup For DC-DC Converters

Todd Hendrix
Todd Hendrix is the director of sales & marketing for Enargy Power Corp. based out of the N.A. headquarters in San Ramon, California. Hendrix has almost 30 years of experience in electronics marketing, sales and business management in the international marketplace. He has demonstrated success with power supply and semiconductor companies including Philips, Artesyn Technologies (now Artesyn Embedded Technologies) and Synqor. Before joining Enargy, Todd consulted for numerous companies on strategy, business development, sales, marketing and mergers & acquisitions.
Articles written by Todd Hendrix in How2Power Today:
01/15/16Medical AC-DC Power Supplies Are Becoming More Specialized

Richard K. Hester
Dick Hester currently works on solar power module electronics for Texas Instruments Power Management group. Dick has over three decades of experience working on everything from circuits and subsystems for analog interfaces to DSP-based systems. He received a PhD in physics from The College of William & Mary, Williamsburg, Virginia, and was a post-doc in the Chemistry Department of MIT. He has been active in the IEEE in various capacities and was elected IEEE Fellow in 1994 and TI Senior Fellow in 2002. He can be reached at ti_dickhester@list.ti.com.
Articles written by Richard K. Hester in How2Power Today:
06/24/11Solar Microconverter Implements Novel MPPT Algorithm

Jun Honda
Jun Honda is a senior staff engineer in International Rectifier’s Energy Savings Product Business Unit in El Segundo, Calif. Jun has more than 15 years of experience in designing consumer, as well as professional audio circuits, including class D audio amplifiers.
Articles written by Jun Honda in How2Power Today:
11/24/09Integrated Driver Shrinks Class D Audio Amplifiers

Michael Hopkins
Michael Hopkins is the founder of CurrentRF, a California-based research company launched in 2002. Through activities with CurrentRF, Michael developed the RFDAC methodology and Current Reuse Mixer (the CRF2101) in 2002, and more recently, the PowerOptimizer (PowerOp) methodologies and technologies the company is currently marketing. Michael is also an RF/analog IC design engineer with 17 years of RFIC and mixed-signal/analog design experience with companies such as Analog Devices, Northrop Grumman, Intersil, Teledyne Scientific, and Cypress Semiconductor where he has designed amplifiers, DACs, ADCs, mixers, switch-mode regulators, high-efficiency charge pumps, DLLs/PLLs, energy harvesting circuits, etc. His unique and wide experience across the communications, analog/mixed-signal, RF, power management, and energy harvesting disciplines in the semiconductor industry has enabled the latest CurrentRF development, the CC-100 PowerOptimizer (PowerOp) and its derivative products.
Articles written by Michael Hopkins in How2Power Today:
04/15/14Technology Recycles Noise Currents To Reduce Power Drain Of Digital Circuits

Yueqaun Hu
Yuequan Hu received the Bachelor’s and Master’s degrees in Mechanical Engineering, and Ph.D. degree in Electrical Engineering from the University of Science and Technology of China in 1989, 1992, and 1999, respectively. From May 2003 to Oct. 2010, he was a member of R&D staff at the Power Electronics Laboratory, Delta Products Corporation, Research Triangle Park, North Carolina, the Advanced R&D unit of Delta Electronics, Inc., Taiwan, one of the world’s largest manufacturers of power supplies. He is currently with Cree Inc., working on R&D of LED lighting solutions. His main research interests include high-intensity discharge (HID) lamp ballasts and LED lighting.

Laszlo Huber
Laszlo Huber was born in Novi Sad, Yugoslavia, in 1953. He received the Dipl. Eng. degree from the University of Novi Sad, Novi Sad, the M.S. degree from the University of Niš, Niš, Yugoslavia, and the Ph.D. degree from the University of Novi Sad in 1977, 1983, and 1992, respectively, all in electrical engineering. From 1977 to 1992, he was an Instructor at the Institute for Power and Electronics, University of Novi Sad. In 1992, he joined the Virginia Power Electronics Center at Virginia Tech, Blacksburg, as a Visiting Professor. From 1993 to 1994 he was a Research Scientist at the Virginia Power Electronics Center. Since 1994, he has been a Senior Member of the R&D Staff at the Power Electronics Laboratory, Delta Products Corporation, Research Triangle Park, North Carolina, the Advanced R&D unit of Delta Electronics, Inc., Taiwan, one of the world’s largest manufacturers of power supplies. His 33-year experience includes the analysis, simulation, and design of high-frequency, high-power-density, single-phase and three-phase power processors; modeling, simulation, evaluation, and application of high-power semiconductor devices; and modeling, simulation, analysis, and design of analog and digital electronics circuits. He has published over 80 technical papers and holds five U.S. patents. Dr. Huber is the recipient of the IEEE Power Electronics Society (PELS) Transactions Prize Paper Award for the best paper published in 2009 and of the Yugoslav Conference on Electronics, Telecommunication, Automation, and Nuclear Technique (ETAN) Best Paper Award in 1990.
Articles written by Laszlo Huber in How2Power Today:
04/29/11Single-Stage Flyback LED Driver Meets Class C Limits on Harmonic Currents

Pat Hunter
Pat Hunter is a senior product marketing engineer in Power Management Products. He earned his bachelor’s degree in electrical engineering from the University of North Carolina at Charlotte.
Articles written by Pat Hunter in How2Power Today:
06/15/16Conventional Buck Vs. High-Frequency Series-Capacitor Buck: Who Wins?

Charles Hymowitz
Charles Hymowitz is a technologist, marketer and business executive with over 25 years of experience in the engineering services and EDA software markets. Mr. Hymowitz has been Chairman and CEO of AEi Systems, LLC since its re-organization in 2002. He currently guides all aspects of the company’s operations including technical services, product quality, sales and a staff of over 30 in-house and consulting engineers.
Articles written by Charles Hymowitz in How2Power Today:
09/24/10Powering RF Systems: Why So Many Power Supply Designs Have Problems and What IC Suppliers Should Do About It
05/27/10Lost in Space: Unpredictable Aging Can Send Resistor Accuracy Way Off Course

Radu H. Iacob
Radu H. Iacob is a product design manager at ON Semiconductor, coordinating design and product engineering activities, from concept to market, on various products lines such as non-volatile memories, digital potentiometers and power management circuits. He has been with ON Semiconductor since 2008. Previously, he held the position of design manager at Catalyst Semiconductor, in charge of design and product introduction for EEPROM memories and other mixed-signal products. He was an employee of Catalyst Semiconductor since 1996. Prior to that, Iacob was a research engineer at the Institute of Micro-technology in Bucharest, Romania. Iacob has co-authored over 20 patents and scientific papers, and holds MS and PhD degrees from the Politehnica University of Bucharest.

Budge Ing
Budge Ing has been an applications engineer with Maxim Integrated for 16 years. He received his MSEE from San Jose State University.
Articles written by Budge Ing in How2Power Today:
02/15/14USB Charger Provides Battery Backup And Load Switching With Easy, Low-Cost Design

David Jacquinod
David Jacquinod graduated with a Master’s degree in power electronics from the Ecole Centrale Marseille, France in 1996. He is currently an application and marketing manager in International Rectifier’s Automotive Business Unit where Jacquinod is in charge of defining and promoting the Intelligent Power Switch products and low-voltage ICs.
Articles written by David Jacquinod in How2Power Today:
09/28/12Automotive Battery And Component Technologies Address Start-Stop Design Challenges

Matt Jenks
Matt Jenks graduated from Michigan State University with a BSEE. He worked ten years for Motorola at both their Automotive and Industrial Electronics Group and Semiconductor Products Sector, in hardware and sales engineering roles. His work included the maintenance and development of powertrain control modules and related custom ICs. He has also worked at Visteon as an electrical engineer and Vishay Intertechnology as a sales engineer. Matt has been with International Rectifier as an automotive field applications engineer for over 7 years.
Articles written by Matt Jenks in How2Power Today:
02/29/12Livin’ On The Edge: Switching Converter Slew Rate Is Key To Mitigating EMI In Automotive Environments

John Jing
John Jing is an applications engineer for Fairchild Semiconductor, focusing on web-based online design tools for various topologies. He is based in Los Angeles, Calif. Prior to Fairchild, he worked as an applications engineer at Semtech. Before joining Semtech, he worked at Rockwell Science Center as a research scientist in the power management group for dual-purpose projects. John holds engineering degrees from Huazhong University of Science and Technology and the Virginia Polytechnic Institute and State University.
Articles written by John Jing in How2Power Today:
02/15/15Partial BCM Mode Of Operation Improves Efficiency For Primary-Side Regulated Flyback LED Driver

Bill Johns
Bill Johns is an applications engineer for bqTESA Wireless Power at Texas Instruments where he specializes in power conversion for portable battery powered applications. Bill has 20 years of design experience in the field of power conversion across a number of different markets. He received his BSEE from University of Texas in Dallas. Bill can be reached at ti_billjohns[at]list.ti.com.
Articles written by Bill Johns in How2Power Today:
07/27/11How To Implement A 5-W Wireless Power System

Ken Johnson
Kenneth Johnson is a director of marketing and product architect at Teledyne LeCroy. He began his career in the field of high-voltage test and measurement at Hipotronics, with a focus on <69-kV electrical apparatus ac, dc and impulse testing with a particular focus on testing of transformers, induction motors and generators. In 2000, Ken joined Teledyne LeCroy as a product manager and has managed a wide range of oscilloscope, serial data protocol and probe products. He has three patents in the area of simultaneous physical layer and protocol analysis. His current focus is in the fields of power electronics and motor drive test solutions, and works primarily in a technical marketing role as a product architect for new solution sets in this area. Ken holds a B.S.E.E. from Rensselaer Polytechnic Institute.
Articles written by Ken Johnson in How2Power Today:
05/16/17A Practical Primer On Motor Drives (Part 16): Torque, Speed, Position, And Direction Sensing
04/17/17A Practical Primer On Motor Drives (Part 15): Low-Pass And Harmonic Filtering Of Power Measurements
03/15/17A Practical Primer On Motor Drives (Part 14): Power Measurements On Distorted Signals
02/17/17A Practical Primer On Motor Drives (Part 13): Motor Drive Control Architectures And Algorithms
01/16/17A Practical Primer On Motor Drives (Part 12): Variable Frequency Motor Drives
12/15/16A Practical Primer On Motor Drives (Part 11): AC And DC Motor Types
11/15/16A Practical Primer On Motor Drives (Part 10): Motor Background
10/15/16A Practical Primer On Motor Drives (Part 9): Power Semiconductors As Implemented In Power Conversion Systems
09/15/16A Practical Primer On Motor Drives (Part 8): Power Semiconductors
08/15/16A Practical Primer On Motor Drives (Part 7): Power Calculations In Three-Phase Systems
07/15/16A Practical Primer On Motor Drives (Part 6): AC Line Power Calculations
06/15/16A Practical Primer On Motor Drives (Part 5): Three-Phase AC Line Current And Winding Configurations
05/16/16A Practical Primer On Motor Drives (Part 4): Single-Phase AC Line Current
04/18/16A Practical Primer On Motor Drives (Part 3): Three-Phase AC Line Voltage
03/15/16A Practical Primer On Motor Drives (Part 2): Single-Phase AC Line Voltage
02/16/16A Practical Primer On Motor Drives (Part 1): What New Design Engineers Need To Know

Ron Johnson
Ron Johnson is a staff applications engineer for Intersil. He has 28 years of semiconductor industry experience, and has worked in Intersil’s Central Applications customer support group the past 11 years. He is the primary developer of the PowerCompass Excel Tool.
Articles written by Ron Johnson in How2Power Today:
12/15/16Creating A Complex Multi-Load Power Solution In Minutes

Milan M. Jovanović
Milan M. Jovanović was born in Belgrade, Serbia. He received the Dipl. Ing. degree in Electrical Engineering from the University of Belgrade, Belgrade. He is currently the Chief Technology Officer of the Power Systems Business Group of Delta Electronics, Inc., Taiwan, one of the world’s largest manufacturers of power supplies, and Vice President for R&D of Delta Products Corporation, Research Triangle Park, NC.

Girish R. Kamath
Girish R. Kamath graduated with a Masters degree in 1996 and a Ph. D in Electrical Engineering from the University of Minnesota in 1998. Since then Girish has been working in the U.S. motor drives and plasma cutting industries. He also has work experience in the Indian power electronics industry, in the area of high-frequency power conversion for UPS applications. Girish currently designs power electronic systems and controls for plasma-cutting power supplies. His main areas of interest are the multi-physics modeling approach to power component design, high-voltage circuits, and digital control.
Articles written by Girish R. Kamath in How2Power Today:
06/29/12Simple Control Method Tames Flux Saturation In High-Frequency Transformer-Link Full-Bridge DC-DC Converters

Saichiro Kaneko
Saichiro Kaneko is chief engineer at Panasonic Semiconductor Solutions. Since 2011, he has been leading GaN power device design and reliability. Recently, Kaneko’s presentation on current-collapse won the Best Paper Award at ISPSD 2015. From 1996 to 2011, he worked on the research and development of silicon lateral IGBTs and SiC wide-bandgap semiconductors. Kaneko graduated from Yokohama National University in 1996.
Articles written by Saichiro Kaneko in How2Power Today:
09/15/15Novel GIT Structure Solves Current Collapse In GaN Power HEMTs

Mike Kania
Mike Kania is currently the business development manager for Eltek, a provider of power electronics and energy conversion products. Mike has been with Eltek and Valere (a power supply company acquired by Eltek) for more than eight years. In this role, Mike’s focus has been on the introduction of state-of-the-art dc power systems technology into new applications and new market segments. Much of his work has been associated with the introduction of high-efficiency rectifier technology and the business cases that accompany its utilization. This has included the development of products designed for telecom applications such as switching centers, wireless cell sites, and broadband access systems. Most recently, Mike has focused on the introduction of switch-mode rectifier systems into traditional industrial markets such as power generation and distribution; railroads; oil and gas; water and wastewater; mining; and industrial processing.
Articles written by Mike Kania in How2Power Today:
03/30/12Switch-Mode Rectifier Technology Reshapes Industrial Battery Charging

Martin Kanner
Martin Kanner is a leader in the fields of motion control, switching supplies, feedback and feedfoward control systems. He holds a BSAE, a BSEE, and an MSEE, all from NYU. Kanner is a member of Eta Kappa Nu and Tau Beta Pi honorary societies and also holds three patents.
Articles written by Martin Kanner in How2Power Today:
01/15/16Power Transformer Design Simplified—Really!
06/13/14Cutting Power Transformer Size In Half While Doubling Transistor Efficiency: It’s All In The Topology
11/15/13Everything You Wanted To Know About Copper Wire But Didn’t Know To Ask

Suresh Kariyadan
Suresh Kariyadan joined International Rectifier in June 2009 as senior staff engineer for POL Applications, Enterprise Power Business Unit (EPBU) where he is responsible for all Point Of Load customer support for the EPBU. The role involves understanding the customer’s power supply requirements, providing reference designs, layout of PCBs, design verification tests, troubleshooting customer application boards and evaluating new product performance in application circuits. Prior to joining International Rectifier, Suresh held senior engineering positions with Maxim Integrated Products and Cherokee International. He holds a Bachelor Degree in Electronics and Telecommunication from Kerala University, India.
Articles written by Suresh Kariyadan in How2Power Today:
01/27/12Voltage-Mode Control Scheme Improves Buck Converter Performance At High Frequencies
07/30/10How to Control Phase Voltage Ringing in Synchronous Buck Convertors
02/19/10Reverse-Current Phenomenon in Synchronous Rectifiers

Marian K. Kazimierczuk
Marian K. Kazimierczuk received the M.S., Ph.D., and D.Sci. degrees in electronics engineering from the Department of Electronics, Technical University of Warsaw, Warsaw, Poland, in 1971, 1978, and 1984, respectively. He is currently a professor of electrical engineering at Wright State University, Dayton, OH. His areas of research are in high-frequency high-efficiency RF power amplifiers, resonant and PWM dc-dc power converters, high-frequency rectifiers, modeling and control of converters, high-frequency magnetics, power semiconductor devices, electronic ballasts, RF transmitters, sensors, and superconductivity. He is a Fellow of IEEE and has published more than 230 papers
Articles written by Marian K. Kazimierczuk in How2Power Today:
12/22/11Power Electronic Circuitry In LED Modules: An Overview
05/27/10Effects of Load Changes On The Control-to-Output Transfer Function Of A Buck-Boost Converter In CCM
02/19/10An Overview and Simulation of DC-DC-AC and Z-Source Grid Connected Inverters

Sameer Kelkar
Sameer Kelkar joined Power Integrations in 2002 and is currently a senior applications engineer. He has a Masters degree in Electrical Engineering from the University of Minnesota.
Articles written by Sameer Kelkar in How2Power Today:
03/30/10Software Speeds Transformer Design For AC-DC Power Supplies

Ramesh Khanna
Ramesh Khanna is a senior applications engineer with Texas Instruments’ High Reliability group where he is responsible for supporting customer design issues. Ramesh has more than 30 years of industry experience. He has a bachelor’s degree in engineering from Concordia University (Montreal, PQ, Canada) and a master’s degree in engineering from the University of Colorado (Boulder, CO). Ramesh can be reached at ti_rameshkhanna@list.ti.com.
Articles written by Ramesh Khanna in How2Power Today:
03/15/13Tips For Applying POL Converters In Downhole A nd Other Harsh Environments

Paul Kierstead
Paul Kierstead has been in the semiconductor business since 1984. He has held engineering and marketing positions in the high-speed interface and interconnect sectors and most recently has been dedicated to power semiconductor devices. Paul has lead efforts in power market analysis, developed market and product strategies and has driven marketing business development efforts. Paul joined Cree SiC Power Products Group in 2008 as the director of marketing. In that role, he is responsible for Cree’s global SiC business development, applications support and new product strategy. Prior to joining Cree, Paul was employed by Fairchild and National Semiconductor.
Articles written by Paul Kierstead in How2Power Today:
08/30/12Silicon Carbide Power Solutions Are Ready To Revolutionize Motor Drives

Jonathan Kimball
Dr. Jonathan Kimball received a BS from Carnegie Mellon in 1994 and an MS from the University of Illinois at Urbana-Champaign in 1996. He then worked in industry, first for Motorola (designing IGBT modules) and then for Baldor (designing industrial motor drives). Kimball returned to the University of Illinois as a research engineer in 2003. He subsequently co-founded SmartSpark Energy Systems (now named SolarBridge Technologies). After receiving a PhD from Illinois in 2007, he joined Missouri S&T as an assistant professor. Kimball’s research interests include photovoltaic systems, hydrokinetic energy, and digital control of power converter systems.

Isik C. Kizilyalli
Isik C. Kizilyalli is the CTO and founder of Avogy. Prior to founding Avogy, he held technical and management positions at Bell Laboratories (AT&T and Lucent Technologies), Agere Systems, Nitronex, and Alta Devices. His research, development, and commercialization experience covers a broad range of semiconductor materials (Si, GaAs, InP, and GaN), devices, and technologies (CMOS, BiCMOS, HFETs, detectors, HBT, photovoltaics). Kizilyalli is a fellow of the IEEE and was the recipient of the Distinguished Member of Technical Staff award by Bell Laboratories. He received a B.S. and Ph.D. degree in Electrical Engineering from the University of Illinois at Urbana. Kizilyalli has published 100 technical papers and has 45 U.S. patents.

Philip T. Krein
Philip T. Krein received the B.S. degree in electrical engineering and the A.B. degree in economics and business from Lafayette College, Easton, Pennsylvania, and the M.S. and Ph.D. degrees in electrical engineering from the University of Illinois, Urbana. He was an engineer with Tektronix in Beaverton, Oregon, then returned to the University of Illinois. At present he holds the Grainger Endowed Director’s Chair in Electric Machinery and Electromechanics as director of the Grainger Center for Electric Machinery and Electromechanics. His research interests address all aspects of power electronics, machines, and drives, with emphasis on nonlinear control approaches. He published an undergraduate textbook, Elements of Power Electronics (Oxford University Press, 1998). In 2001, he helped initiate the International Future Energy Challenge, a major student competition involving fuel cell power conversion and energy efficiency for machines. He holds twelve U.S. and four European patents. Dr. Krein is a registered professional engineer in Illinois and in Oregon. He was a senior Fulbright Scholar at the University of Surrey in the United Kingdom in 1997-98, and was recognized as a University Scholar in 1999, the highest research award at the University of Illinois. In 2003 he received the IEEE William E. Newell Award in Power Electronics. From 2005 to 2007 he was a Distinguished Lecturer of the IEEE Power Electronics Society.
Articles written by Philip T. Krein in How2Power Today:
06/29/10Comprehensive Flux Estimator Implementation Procedures For Advanced Control Of Inverter-Fed Induction Machines

Santosh Kulkarni
Santosh Kulkarni is a principle investigator in the area of Thin film Magnetics for Power Supplies at the Micro-Nano Systems Center, Tyndall National Institute, University College Cork, Ireland. To date, Kulkarni has been successful in winning over €4.5M in research grants from government agencies and industry. Kulkarni has published one book chapter and over 55 publications in international journals and peer-reviewed conference proceedings. He has so far filed two patents, one of which has been licensed to a large multinational company.
Articles written by Santosh Kulkarni in How2Power Today:
05/15/15Nano-Magnetics For High Efficiency Power Supplies

Raleigh Lan
Rayleigh Lan is a senior principle member of Technical Staff at Maxim Integrated. His areas of interest are power management theoretical analysis and applications of analog products and motor drivers. He holds several patents and has published several articles in the field. He received his BSEE and MSEE degrees from National Taiwan University.

Alain Laprade
Alain Laprade received an MEng in electrical engineering from McGill University in Montréal in 1984. Since then he has worked in power supply development for commercial, telecommunication, automotive, and aerospace applications as an applications engineer. In 2010, he relocated to Rhode Island to join ON Semiconductor’s Analog Power Group New Product Development team.
Articles written by Alain Laprade in How2Power Today:
07/15/14Enhanced OTA Models Improve Design Of Feedback Compensation Networks
03/15/13Simplified Analysis Of A DCM Boost Converter Driving An LED String Part II: Practical Considerations
02/15/13Simplified Analysis Of A DCM Boost Converter Driving An LED String Part I: Theoretical Analysis

Bill Laumeister
Bill Laumeister is an engineer in strategic applications with the Precision Control Group at Maxim Integrated Products. He works with customers who use DACs, digital potentiometers, and voltage references. He has more than 30 years of experience and holds several patents.
Articles written by Bill Laumeister in How2Power Today:
11/21/12Beyond Power Management: Power Engineers Must Also Solve ESD, EMI, And RFI Problems
11/30/11Self-Starting Can Be Hard To Do–Understanding Power-On-Reset Requirements In Regulators And Bandgaps

Brian LaValle
Brian LaValle is marketing manager for industrial MOSFETs in the Power Management Devices business unit at International Rectifier.
Articles written by Brian LaValle in How2Power Today:
01/16/14RoHS and Power MOSFETs: An Evolving Standard Influences Package Selections Now And In The Future

Tom Lawson
Tom Lawson has been involved with instrumentation since 1968. During the 1970s he worked in medical electronics with Bill Morong, the principal inventor of predictive energy balancing. During the 1980s and 90s he built his own instrumentation company. Since rejoining with Bill Morong, the focus has been power conversion. Lawson started CogniPower in 2009 to begin the commercialization process. Lawson is named on eight issued patents and five patents pending, spanning four decades.
Articles written by Tom Lawson in How2Power Today:
11/15/14Actively Managed Storage Capacitor Offers Host Of Benefits In AC-DC And DC-DC Applications
05/15/14New Topology Eliminates Extra Stage Normally Required For PFC
03/15/13Better Than Class D: Predictive Energy Balancing Can Boost Efficiency And Fidelity Of Cell Phone Audio Amplifiers
01/27/12Predictive Energy Balancing Enhances Control of Power Converters

Eric (Sangyong) Lee
Eric (Sangyong) Lee is an applications engineer at Texas Instruments where he has worked on constant on-time (COT) buck controllers, emulated current-mode synchronous buck and multiphase synchronous boosts. Eric received his Master’s degree in Power Electronics & Electrical Machinery from Konkuk University in South Korea.

Julie J. Lee
Julie J. Lee holds a BS and MS in electrical engineering from Wright State University. She is currently pursuing her PhD in Electrical Engineering from Wright State University, and working as a research assistant and a graduate teaching assistant in the Department of Electrical Engineering at WSU. Her research interests are in power electronics, PWM dc-dc converters, and power semiconductors. Ms. Lee is a member of Tau Beta Pi and an IEEE student member.
Articles written by Julie J. Lee in How2Power Today:
05/27/10Effects of Load Changes On The Control-to-Output Transfer Function Of A Buck-Boost Converter In CCM

Leonard Leslie
Leonard G. Leslie, Jr. received the B.S. degree from Virginia Tech in 2001 and M.S. degree from the Center for Power Electronics Systems (CPES), Virginia Tech 2002. He is currently the manager of Space Product Engineering at VPT Inc. in Blacksburg, Va. Leonard has combined his experience in the Navy Nuclear Power Program and power electronics design to develop and validate custom and standard radiation-hardened dc-dc converter solutions to support the space industry.
Articles written by Leonard Leslie in How2Power Today:
05/15/14Using Ruggedized EMI Filters To Pass The CS101 Requirement Of MIL-STD-461D-F
01/17/13Rad Hard Processors And Power Converters Propel Intermediate Bus Architecture Into Space Applications

Phill Leyva
Phill Leyva is a principal member of technical staff at Maxim Integrated. He joined the company in 1999 and is now an expert in isolated power-supply, power over Ethernet (PoE), and hot-swap designs. Phill has a BSEE from San Jose State University in California.
Articles written by Phill Leyva in How2Power Today:
07/15/15Two PSE Controllers Deliver 80 W For Class 5 PoE Power Injector

Fuxiang Lin
Fuxiang Lin currently lives in Sydney, Australia where he has been engaged in research on power factor correction and ways to improve power supply efficiency since 2011. Prior to that Lin worked at Yongxiang Electronic Ltd as electronics engineer and, before that, as an electronics technician at Acon Technology Ptd, after moving to Australia in 2001. Previously, he worked as an electrical engineer in China from 1985 to 1995. Lin received a BE degree from South China University of Technology in 1985 and an ME degree from Zhejiang University in 1991. He can be reached at frankmailid@yahoo.com.
Articles written by Fuxiang Lin in How2Power Today:
12/16/13Single-Stage PFC Topology Employs Two-Transformer Approach For Improved Efficiency, Reliability, And Cost

Fuyong Lin
Fuyong Lin is a professor at the Institute of Mechanical and Electrical Engineering, Huaqiao University, Xiamen, Fujian, China. He received a BE Degree From Agriculture University of Fujian Province, an MS Degree from South China University of Technology, and a Ph.D from Tianjin university. Lin can be reached at fylin@hqu.edu.cn.
Articles written by Fuyong Lin in How2Power Today:
12/16/13Single-Stage PFC Topology Employs Two-Transformer Approach For Improved Efficiency, Reliability, And Cost

Alex Lin
Alex Lin is an application engineer for Fairchild Semiconductor’s PCIA computing product line. He has been with Fairchild for about six years. Alex holds a B.S.E.E. and an M.S.E.E. degree from National Taiwan University of Science and Technology.
Articles written by Alex Lin in How2Power Today:
09/28/12A More-Efficient Half-Bridge LLC Resonant Converter: Four Methods For Controlling The MOSFET

Dongming Liu
Dongming Liu is a principal member of the Technical Staff at Maxim Integrated, which he joined in 2005. Liu has a master’s degree in Microelectronics from Beijing University in China.
Articles written by Dongming Liu in How2Power Today:
03/15/14Controller IC Implements Compact, Power-Saving Solution For Hot-Swapping And Active ORing In Telecom Systems

Adnaan Lokhandwala
Adnaan Lokhandwala is product manager, consumer isolated power, at Texas Instruments where he is responsible for understanding market and customer needs for new ICs and driving new product roadmaps for ac-dc consumer power. He received the MSEE and MSCE degrees from the University of Illinois, Chicago.
Articles written by Adnaan Lokhandwala in How2Power Today:
10/15/14Raising The Bar For Flyback Primary-Side Regulation: Enabling Accurate CV-CC Solutions From 5 W To 150 W

Jean-Paul Louvel
Jean-Paul Louvel joined ON Semiconductor in March 2007 as a senior system application engineer working on overall system solutions. Since developing the LIPS solution for CCFL backlights, Jean-Paul has worked on new solutions for reduced standby power consumption and a specific solution for very high supply voltage (mainly for e-metering applications.) He also develops new TV power solutions. One of them is a simple primary-side-regulated solution for single-edge LED string backlights. With ON Semiconductor, he holds four issued U.S. patents pertinent to control techniques, with three others pending. Prior to joining ON, Jean-Paul spent three years with TCL Multimedia and over 22 years with Thomson Multimedia in Germany where he performed power development work (mainly for TVs). Overall, he holds over 30 patents pertinent to power conversion.
Articles written by Jean-Paul Louvel in How2Power Today:
06/15/16Meeting The Standby Power Specification In LED TVs With A Single Power Supply
05/15/15Pre-Regulator Design Protects High-Voltage Power Supplies From Phase Faults (Part Two)
01/15/15Pre-Regulator Design Protects High-Voltage Power Supplies From Phase Faults (Part One)

Greg Lubarsky
Greg Lubarsky is a senior applications engineer with National Semiconductor’s Grass Valley design center and works in the Mobile Devices Power group. He received his Bachelor of Science degree in Electrical Engineering from the University of California, Davis in 2002. Lubarsky has over seven years of experience as an applications engineer working with white LED backlight drivers, LED flash drivers and other power management electronics.
Articles written by Greg Lubarsky in How2Power Today:
10/27/11A Holistic Approach To Reducing Backlight Power Consumption
11/24/09Give Your Battery A Rest With A Supercapacitor-based Power Subsystem

Yanping Ma
Yanping Ma is currently the head of Quality and Reliability at Efficient Power Conversion (EPC). She received her Ph.D in Materials Science and Engineering from the University of California at Berkeley in 1996. Prior to joining EPC, she held various engineering positions in silicon component R&D at International Rectifier.
Articles written by Yanping Ma in How2Power Today:
10/22/10How2 Understand eGaN Transistor Reliability

Eric Macris
Eric Macris is founder and chief technology officer of Element Energy. Prior to founding Element Energy, Eric was a co-founder of Spring Automotive, a developer of plug-in hybrid drivetrains, and launched the business services branch of Current Communications, a smart-grid technology and service provider. He also worked in the Clinton White House as the lead financial analyst for federal research and development programs. He holds a B.S. degree in electrical engineering from UCLA, and an MPA degree from Princeton University.
Articles written by Eric Macris in How2Power Today:
12/20/12Hardware-Software Architecture Improves Performance Of Large, Battery-Powered Systems

Arindam Maitra
Arindam Maitra is a senior project manager at the Electric Power Research Institute (EPRI). He is responsible for leading and managing activities related to the power system infrastructure requirements for plug-in hybrid vehicles. He is also conducting and managing numerous research activities associated with power systems and power electronics. Prior to joining the Electric Transportation group, Maitra worked as a senior project manager in the System Analysis and System Studies group, conducting and managing a wide range of research activities and power system studies in the transmission, distribution, power quality, and IntelliGrid research areas. Maitra holds two patents for the Intelligent Universal Transformer design topology and one patent in solid-state switchgear topology. Maitra received his B.E. degree from the Regional Engineering College, Nagpur, India, and holds an M.S. and a doctorate in electrical engineering from Mississippi State University. Maitra is also a recipient of the 2005 and 2010 Chauncey Award.
Articles written by Arindam Maitra in How2Power Today:
04/30/12Utility Direct Technology Boosts Efficiency Of Fast Charging For Electric Vehicles

Amitabha Mallik
Amitabha Mallik received his Bachelor’s of Engineering from Visveswaraiah Technological University, Belgaum, India in 2008. He is pursuing his MTech at MIT, Manipal University, Manipal, India, in Power Electronics Systems and Control. He is currently working at Strategic Technology Group, Pune, India. His areas of interests are power semiconductor devices, motor drives and control, PWM dc-dc converters, and OrCAD/PSPICE (system-level simulations).

T. K. Man
T. K. Man received the BSc (Hon) degree at Manchester Polytechnic in 1984, MSc degree in engineering at Hong Kong Polytechnic University in 1999 and MSc degree in IC Design Engineering at Hong Kong Science and Technology University in 2007. Man has 22 years experience in power supply design, both linear and switching. He joined National Semiconductor in 2004 as a product application manager in Hong Kong. Prior to National, Man worked at Motorola and ON Semiconductor. His research interests include control modeling of SMPS, LED lighting systems and energy harvest technology. He is a senior member of IEEE.

Ryan Manack
Ryan Manack is the power systems engineering manager in System Engineering and Marketing. He earned a bachelor’s degree in electrical engineering from the University of Texas in Austin.
Articles written by Ryan Manack in How2Power Today:
06/15/16Conventional Buck Vs. High-Frequency Series-Capacitor Buck: Who Wins?

John Mandelcorn
Josh Mandelcorn is a member of the Group Technical Staff at Texas Instruments where his focus is on low-power isolated and nonisolated converters. With more than 30 years of power supply/system experience, Josh has either invented or co-invented 17 U.S. patents. Josh received his BSEE from Carnegie-Mellon University, Pittsburgh, Pennsylvania. In 1998 he was appointed Distinguished Member of Technical Staff in Bell Labs. Josh can be reached at ti_joshmandelcorn[at]list.ti.com.

Vincenzo Marano
Vincenzo Marano is a system and application manager in the Industrial and Power Conversion Division, STMicroelectronics. He received a degree in electronic engineering from the Politecnico di Milano, Italy, in 2000 and then joined STMicroelectronics. His main focus is on motor drivers, MOS/IGBT drivers and industrial ICs. He is the author of papers and holds several patents on motor control ICs and architectures.
Articles written by Vincenzo Marano in How2Power Today:
01/27/12System-On-Chip Architecture Raises Performance Of Microstepping Motor Driver Designs

Michelangelo Marchese
Michelangelo Marchese is a technical marketing engineer in the Industrial & Power Conversion Division of STMicroelectronics. He is based in Catania (Italy). Marchese joined the company in 1997 as a front-end engineer for smartpower devices, then became a marketing engineer for Intelligent Power Switches (IPS) for industrial. He is also experienced in software development for programmable logic controllers (PLCs).
Articles written by Michelangelo Marchese in How2Power Today:
11/30/11Use Intelligent High-Side Power Switch To Satisfy Safety Requirements In Process Control And Industrial Automation

Peter Markowski
Peter Markowski has been involved with power supply design since graduating in 1990 with an advanced degree in power electronics. Most of his career he worked for Emerson, formerly Artesyn and Computer Products as a product designer and advanced technology engineer. Recently, Peter has been involved in high-performance FPGA digital controllers and very high bandwidth, purely switched-mode envelope tracking voltage modulators. This year he started the consulting business Envelope Power LLC. Peter is the author of 11 U.S. patents and several applications encompassing various aspects of the power conversion engineering.
Articles written by Peter Markowski in How2Power Today:
10/15/143D FEA Software Solves Tough Inductive Noise Problems
09/15/14Latest Generation Of 3D Electromagnetic Finite Element Analysis Software With Breakthrough Simplicity Facilitates Magnetic Component Design
08/15/14FPGA-Based Controller Plus Integrated Power Stage Builds Envelope Tracking Modulator With No Compromises
07/15/14Simple Method Of Implementing Digital Loop Compensation In An FPGA
06/15/14FPGA-Based Power Controllers Offer Greater Speed And Computational Power Than Microcontrollers And DSPs
04/15/14Power Supply Control With FPGAs: Model-Based Design With Matlab, Simulink And DSP Builder

Christophe Massenet
Christophe Massenet has spent the last 16 years in various electrical engineering positions, designing and managing aerospace and telecom programs with multiple power supply, RF, mechanical and thermal constraints. As the head of Gaia Converter's USA operations, he brings engineers local application, technical and logistic support. Christophe holds masters degrees in electrical engineering and business administration.
Articles written by Christophe Massenet in How2Power Today:
10/15/13Hold-Up Modules Reduce Capacitance Requirements For High-Rel Power Supplies

Rob McCarthy
Rob McCarthy has been with Maxim since 2011 as a field application engineer in the Chicago area. He has 30 years of design and application experience including stints at Snap-on Tools, Harris Corporation and TI. In his free time he enjoys bicycling and fishing the rivers of Illinois.
Articles written by Rob McCarthy in How2Power Today:
05/15/15Take The Edge Off High dV/dt Supplies

Colonel W. T. McLyman
A recognized authority in the field of magnetics design with 47 years of experience, Colonel McLyman is an accomplished inventor, author, and lecturer. He holds fourteen U.S. Patents on magnetics-related concepts and has written four popular textbooks including the recently revised and expanded, Third Edition of Transformer and Inductor Design Handbook. McLyman retired as a senior member of the Avionics Equipment Section of the Jet Propulsion Laboratory (JPL). In his thirty years at JPL in power conversion and as the magnetics specialist, McLyman wrote over seventy JPL Technical Memorandums, New Technology Reports, and Tech-Briefs on the subject of magnetics and circuit designs for power conversion, fifty of which have been published by NASA. McLyman is President of Kg Magnetics, Inc., which specializes in power magnetics design.
Articles written by Colonel W. T. McLyman in How2Power Today:
12/15/09Designing the Sine Wave Quiet Converter

Jean-Jacques Meneu
Jean-Jacques Meneu is a technical marketing engineer in the Industrial & Power Conversion Division of STMicroelectronics. Since joining the company in 1997, he has focused on industrial applications. Meneu received a degree in Electronic Engineering from the National Superior Electronics School in Paris, France.
Articles written by Jean-Jacques Meneu in How2Power Today:
08/30/12Non-Dissipative Control Saves Power And Cost In Stepper Motor Applications

Jean-Jacques Meneu
Jean-Jacques Meneu is a technical marketing engineer in the Industrial & Power Conversion Division of STMicroelectronics. Since joining the company in 1997, he has focused on industrial applications. Meneu received a degree in Electronic Engineering from the National Superior Electronics School in Paris, France.
Articles written by Jean-Jacques Meneu in How2Power Today:
08/30/12Non-Dissipative Control Saves Power And Cost In Stepper Motor Applications

Roy Mi
Roy Mi is an applications engineer for Fairchild Semiconductor’s technical marketing team based in Chicago, Ill. He joined Fairchild after 20+ years working in various R&D positions in the power electronics industry. Roy graduated from National University of Singapore with an MSEE in power electronics.
Articles written by Roy Mi in How2Power Today:
02/15/15Partial BCM Mode Of Operation Improves Efficiency For Primary-Side Regulated Flyback LED Driver

Peter James Miller
Since receiving his Master of Science degree in electrical engineering from Worcester Polytechnic Institute (WPI), Massachusetts, Peter James Miller has worked in TI's Power business group as an applications engineer, IC designer and systems engineer supporting nonisolated dc-dc controllers and converters. A member of TI's Technical Staff, Peter currently works in TI's High-Performance DC Solutions integrated FET team where he assists leading customers as they develop power solutions around TI's PMBus-enabled integrated FET converters. Peter is also involved with defining TI's next generation of PMBus-enabled power converters.
Articles written by Peter James Miller in How2Power Today:
03/13/15PMBus Gives Designers New Options For Meeting Adaptive Voltage Scaling Requirements

Gregory Mirsky
Gregory Mirsky, is a senior electrical engineer with Continental Automotive Systems in Deer Park, Ill., which he joined in March 2015. In his current role, Gregory performs design verification on various projects, designs and implements new methods of electronic circuit analysis, and runs workshops on MathCAD 15 usage for circuit design and verification. He obtained a Ph.D. degree in physics and mathematics from the Moscow State Pedagogical University, Russia. During his graduate work, Gregory designed hardware for the high-resolution spectrometer for research of highly compensated semiconductors and high-temperature superconductors. He also holds an MS degree from the Baltic State Technical University, St. Petersburg, Russia where he majored in missile and aircraft electronic systems. Gregory holds numerous patents and publications in technical and scientific magazines in Great Britain, Russia and the United States. Outside of work, Gregory’s hobby is traveling, which is associated with his wife’s business as a tour operator, and he publishes movies and pictures about his travels online.
Articles written by Gregory Mirsky in How2Power Today:
06/15/17Using Duty Cycle To Detect Power Supply Overload (Part 3): Accounting For A Variable Input Voltage
05/16/17Using Duty Cycle To Detect Power Supply Overload (Part 2): A Practical Implementation
04/17/17Using Duty Cycle To Detect Power Supply Overload (Part 1): Why It’s Needed
02/17/17Fast, Simple Solenoid Driver Saves Power In Industrial Applications
11/15/16Generate Hysteresis Curves From Magnetic Core Datasheet Parameters

David Morrison
David G. Morrison, Editor/Publisher of How2Power.com, is a veteran technical writer and editor. Prior to founding How2Power.com, Morrison served as Editor-in-Chief of Power Electronics Technology (PET) magazine. Prior to joining Power Electronics Technology, Morrison served as a Technology Editor at Electronic Design magazine where he reported on analog & power technologies, and as an associate editor at Electronic Products magazine, where he reported on analog ICs and other components. Before becoming an editor, Morrison worked for several years as an electrical engineer at audio and RF electronics companies. Morrison received a BSEE from the University of Rochester.

Aengus Murray
Aengus Murray is the motor and power control applications manager for the Automation, Energy and Sensors unit at Analog Devices. He is responsible for the complete Analog Devices signal chain offering for industrial motor and power control. Murray holds bachelor’s and doctorate degrees in electrical engineering from University College Dublin in Ireland. He has over 30 years of experience in the power electronics industry and has also worked with International Rectifier, Kollmorgen Industrial Drives and Dublin City University.
Articles written by Aengus Murray in How2Power Today:
01/15/15Model-Based Design Streamlines Embedded Motor Control System Development

Tom Neville
Tom Neville is a product planner and product marketing manager in Tektronix’s Time Domain Business Unit. He has an MSEE from Portland State University and a BS degree from the United States Military Academy. Tom has worked at Tektronix for the past nine years with a focus on measurement solutions for power applications.
Articles written by Tom Neville in How2Power Today:
06/15/16Optimize Half-Bridge Circuit Designs Through Accurate VGS Measurements

Hui Nie
Hui Nie is the director of device technology at Avogy. He has spent nearly 20 years working on semiconductor electronic and optoelectronic devices; including GaAs, InP and InAlAs-based avalanche photodiodes (APD), PIN photodiodes, laser diodes and solar cells. Before Avogy, Nie was the lead solar cell designer at Alta Devices, and world recorder holder of the most efficient single-junction solar cell. He has held positions as director of product line management, director of advanced technology and senior engineer at Source Photonics, Finisar, Triquint and Lucent Technologies. Due to his contributions, InP-based APDs transitioned from R&D lab into mass production, and are now widely deployed around world in fiber-to-the-home (FTTx) applications. Nie received a B.S. degree in Physics from University of Sciences and Technology in China in 1993, and a Ph.D. in Electrical Engineering from the University of Texas at Austin in 1998. He is a senior member of IEEE for his contributions toward telecommunication APDs, receivers and transceivers.
Articles written by Hui Nie in How2Power Today:
03/15/13Vertical Devices In Bulk GaN Drive Diode Performance To Near - Theoretical L imits

Kim Nielson
Kim Nielson is a Sr. Engineering Technician for National Semiconductor's Design Center (Phoenix), where he has worked for five years. The center's products include next-generation PWM power controllers, gate drivers, and hot-swap and load-share controllers. Before joining National Semiconductor, Nielson spent 15 years as a power supply proto-type development specialist for commercial, military, and space applications. In his spare time, he enjoys golf, music, and travel.
Articles written by Kim Nielson in How2Power Today:
01/26/10Increase Boost Regulator Efficiency With Synchronous Rectification

Rich Nowakowski
Rich Nowakowski is a product marketing manager for dc-dc converters within TI’s Power Management group. Rich received his BSEE and MBA from North Dakota State University, Fargo, ND.
Articles written by Rich Nowakowski in How2Power Today:
06/15/16Conventional Buck Vs. High-Frequency Series-Capacitor Buck: Who Wins?
10/25/12Techniques For Implementing A Positive And Negative Output Voltage For Industrial And Medical Equipment

Michael O'Loughlin
Michael O'Loughlin is an applications engineer with the Power Supply Control Products group at Texas Instruments. He specializes in offline and isolated power supply design and has authored numerous articles on power factor correction and power supply design related topics. Michael received his Bachelor of Science degree from the University of Massachusetts.

Dara O’Sullivan
Dara O’Sullivan is a system applications engineer for the Motor and Power Control group at Analog Devices (ADI). His area of expertise is power conversion and control in ac motor control applications. O’Sullivan received his B.E, M.Eng.Sc. and Ph.D. from University College Cork, Ireland.
Articles written by Dara O’Sullivan in How2Power Today:
01/15/15Model-Based Design Streamlines Embedded Motor Control System Development

Minyoung Park
Minyoung Park is an application engineer at Fairchild Semiconductor, where he is an expert in power electronics. Park joined Fairchild in 2011, and is currently focused on induction heating applications in consumer power systems. He received his master’s degree in power electronics from Kyungpook National University in 2011.

Kevin Parmenter
Kevin Parmenter has over 20 years of experience in the electronics and semiconductor industry. Presently the director of Advanced Technical Marketing for Digital Power Products at Exar, Kevin previously led global product applications engineering and new product definition for Freescale Semiconductors AMPD - Analog, Mixed Signal and Power Division based in Tempe, AZ. Prior to this, he worked for Fairchild Semiconductor in the Americas as senior director of field applications engineering. In this role, Kevin led the FAE team in the Americas region plus three regional design centers. Previously Kevin held various technical and management positions with increasing responsibility at ON Semiconductor and in the Motorola Semiconductor Products Sector. Kevin also led an applications engineering team for the start-up Primarion where he worked on high-speed electro-optical communications and digital power supply semiconductors. Kevin is president and serves on the board of directors of the PSMA (Power Sources Manufacturers Association) and was the general chair of APEC 2009 (the IEEE Applied Power Electronics Conference.) Kevin has also had design engineering experience in the medical electronics and military electronics fields. He holds a BSEE and BS in Business Administration, is a member of the IEEE, and holds an Amateur Extra class FCC license (call sign KG5Q) as well as an FCC Commercial Radiotelephone License.
Articles written by Kevin Parmenter in How2Power Today:
11/15/16Surges and Transients Can’t Read Specifications! How to Protect Power Supplies Against Real-World Threats
10/15/16Meeting High Altitude Requirements For Power Supplies: A Guide For Designers And Specifiers
08/15/16Wide Voltage Trim Power Supplies: The Benefits Of Linear Supplies Without The Drawbacks
04/16/15APEC (2015) Rap Session Ponders Progress, Prospects And Pitfalls For GaN Devices
09/16/13In Pursuit of Energy Efficiency, Better Physics Can Trump Better Electronics
04/01/11Rap Session Wrap Up: APEC Panelists Explore Social Media As Cure For Corporate Hiring Woes
12/01/10Working With Recruiters: What Engineers and Employers Need to Know
10/01/10Bad HR Processes Stymie Efforts To Hire Talented Engineers

Parviz Parto
Parviz Parto is director of Systems Applications Engineering at International Rectifier where he is responsible for defining and developing power management products for point-of-load (POL) applications. Parviz has more than 15 years of design experience in power electronics. He received his M.S. from Chalmers University of Technology, Gothenburg, Sweden in electrical engineering. Parviz is author or coauthor of many technical papers and holds U.S patents in the area of power management. His interests include high-frequency switched-mode power supplies and ICs for power management applications.
Articles written by Parviz Parto in How2Power Today:
01/27/12Voltage-Mode Control Scheme Improves Buck Converter Performance At High Frequencies

Jeff Perry
Jeff Perry is the senior development manager for National Semiconductor's WEBENCH online design environment. He spent the first part of his career in semiconductor process engineering and the latter portion in power supply applications and development. He has been involved with the WEBENCH tool since it's inception in 1999. Jeff graduated from UCLA with a BS in physics and received an MBA from San Jose State University. He holds 10 patents.
Articles written by Jeff Perry in How2Power Today:
04/30/10Scoping Out the Best DC-DC Converter Design

Sándor Petényi
Sándor Petényi works as an analog IC design engineer at STMicroelectronics, Prague in the Czech Republic where he develops voltage regulators and power management products. Prior to joining STMicroelectronics in 2004, Sándor served as a device engineer for two years at ON Semiconductor, Pöstyén, Slovakia. He holds B.S. and M.S. degrees in electronics from Slovak University of Technology in Pozsony.
Articles written by Sándor Petényi in How2Power Today:
12/15/14Bandgap Voltage Reference Achieves High Performance At Low Supply Voltages

Todd Phillips
Todd Phillips is a strategic marketing manager for the electronics business unit; focusing on the LED, Datacenter and Mobile markets. He joined Littelfuse as a sales engineer in 2006 for the industrial POWR-GARD business unit. Then, Todd joined the electronics business unit in 2011 as a regional sales manager. Todd’s current responsibilities include development of marketing collateral material, management of marketing activities for new product launches and performing market studies and feasibility analyses for new product ideas. He received his BSEE from Milwaukee School of Engineering. Todd can be reached at tphillips@littelfuse.com

Enrico Poli
Enrico Poli is a senior application engineer for STMicroelectronics in Agrate Brianza, Italy. Since 2006 he has worked in the Industrial Business Unit, Motor Control Team, with a focus on monolithic solutions.
Articles written by Enrico Poli in How2Power Today:
08/30/12Non-Dissipative Control Saves Power And Cost In Stepper Motor Applications
01/27/12System-On-Chip Architecture Raises Performance Of Microstepping Motor Driver Designs

Franki Poon
N. K. Poon is the co-founder of PowerELab Ltd., a spin-off company from the University of Hong Kong, and the creator of the Web-based software PowerEsim. Poon received the B.Eng. degree (with honors) in electronic engineering from the City University of Hong Kong, in 1995, and the Ph.D. degree from Hong Kong Polytechnic University in 2003. After graduation, he worked at Artesyn Technologies (Asia Pacific) for three and a half years before joining the Power Electronics Laboratory at the University of Hong Kong. His current interests include soft-switching techniques, EMI modeling, PFC topologies, synchronous rectification, converter modeling, PWM inverters, simulation techniques, and fast transient regulators. Poon is also the key inventor of more than 20 patents, and has published more than 50 journal and conference papers.
Articles written by Franki Poon in How2Power Today:
11/15/15Free Tool Takes The Drudgery Out Of Designing EMI Filters
09/15/14The Most Important Concept In EMI Diagnosis
08/15/13Web-Based Toolset Accelerates Power Supply Design For Both Power Electronics Experts And Non-Experts

Vlado B. Porobić
Vlado B. Porobić received the B.S., M.S and Ph.D. degrees in electrical engineering from the Faculty of Technical Sciences, University of Novi Sad, Serbia, in 2000, 2005, and 2011, respectively. From 2000 to 2011, Vlado was employed on the Faculty of Technical Sciences, as a teaching and research assistant in the Department for Power Electronics and Electrical Machines. Since 2011 he has been with Typhoon HIL in Novi Sad where he is working as a power electronics application engineer, developing various control applications for testing and evaluating HIL models and accompanying software. His main research is focused in the area of power electronics and motor control.

Vlado D. Porobic
Vlado B. Porobic received the Dipl.-Ing., M.S and Ph.D. degrees in electrical engineering from the Faculty of Technical Sciences, University of Novi Sad, Serbia, in 2000, 2005, and 2011, respectively. Since 2000 Vlado has been employed on the Faculty of Technical Sciences in the Department of Power Electronics and Electrical Machines, first as a teaching and research assistant and then from 2011 as an assistant professor. In 2014 Vlado co-founded PERUN Technologies. His expertise includes power electronics drives, digital signal processing, industrial communication and protocols, while his main activities are focused on firmware development.

Roberto Prieto
Roberto Prieto was born in Madrid, Spain. He received the M.Sc. and Ph.D. degree in electronic engineering from the Technical University of Madrid, Spain, in 1993 and 1998 respectively. Since 1994, he has been an assistant professor at the Technical University of Madrid, where he is currently associate professor and deputy vice-president for research. He has published more than 100 papers in International conferences and journals, most of them from the IEEE. His research interests include high-frequency magnetic components, modeling of power electronics systems and development of CAD tools for power electronics applications.
Articles written by Roberto Prieto in How2Power Today:
03/30/10Modeling of Integrated Magnetics Components

Paul Pu
Paul Pu joined Integrated Device Technology (Shanghai) Co., Ltd. in 2009 and serves as a marketing director at present. Paul brings almost ten years experience in the power and energy industry and holds M.S. and B.S. degrees in electrical engineering from Tsinghua University.
Articles written by Paul Pu in How2Power Today:
05/27/11Energy Meter Design Operates Accurately Over Wide Current Range

Jifeng Qin
Jifeng Qin is a product manager in the Automotive Products Business Unit at International Rectifier. He holds a BSEE degree from Zhejiang University, China and an MSEE degree from North Carolina State University, U.S.A. He has more than six years’ experiences in circuit design, applications and marketing in the semiconductor industry. He currently holds nine U.S. patents.
Articles written by Jifeng Qin in How2Power Today:
08/15/14PQFN With Ribbon Bond Boosts Power MOSFET Performance While Reducing System Cost For Automotive Applications

Shishir Rai
Shishir Rai received his B.Tech. degree in electrical engineering from the Indian Institute of Technology, Madras, India in 2002 and his M.S. degree in electrical engineering from the University of Notre Dame, Notre Dame, Indiana in 2005 with a focus on the design of high speed III-V devices. He has been with International Rectifier since 2005 where he has worked in the areas of power device design, high-voltage IC design, applications engineering and technical marketing.
Articles written by Shishir Rai in How2Power Today:
05/27/11MOSFET Package Technology Enhances Performance Of Motor Drives

Klaus Reichert
Klaus Reichert has more than 30 years of experience in electronic circuit design and the application of magnetic and electronic components. Since 1990 he has been working for VACUUMSCHMELZE GmbH & Co KG, where he is currently senior manager for Industrial Applications. Reichert received his diploma in electrical engineering from the University of Applied Sciences in Frankfurt, Germany.
Articles written by Klaus Reichert in How2Power Today:
07/15/13Closed-Loop Sensors With Magnetic Probe Extend High-Precision Current Measurement To Higher Current Levels

Benoit Renard
Benoit Renard obtained his degree in Analog Electronics and Microelectronics in 2009 from the Institute of Technology of the University of Tours, France. He has worked for seven years in STMicroelectronics in the Application & System Engineering department for SCR and Triac semiconductors—in the ASD & IPAD division of Tours for the Automotive and Discrete Group—as application engineer, specializing in ac line applications (appliances, industrial and lighting). He has forged broad experiences with many published articles, conference papers and presentations, and patents to his credit.

Tom Ribarich
Since joining International Rectifier (IR) in 1996, Tom Ribarich has been the director of IR’s Lighting IC Design Center where he is responsible for developing control ICs for the global lighting market, including fluorescent, halogen, HID, LED and LCD backlighting applications. Prior to that, Tom was employed by Knobel Lighting Components in Switzerland where he designed dimmable electronic ballast systems for a variety of applications. Tom holds a BSEE degree from California State University, Northridge and a Master’s degree in ASIC design from University of Rapperswil, Switzerland.
Articles written by Tom Ribarich in How2Power Today:
11/15/14Sense Power Switch Current Without Increasing Losses Or Parasitics
02/15/14Control Circuit Simplifies PFC Boost Converter Design
09/27/11Circuit Implements Low-Cost Ballast Control With High Power Factor
06/29/10How To Design a 250-W HID Electronic Ballast
09/17/09A Simpler Way to Dim Fluorescent Lamps

Calogero Ribellino
Calogero Ribellino has been with STMicroelectronics in Catania, Italy since 2005 during which time he has been in charge, as design manager, of a multisite team working on low dropout regulators, voltage references, medium power dc-dc converters, drivers for back lights, and linear and switching battery chargers. In 2011 his responsibilities expanded to include the rad hard products design team. Ribellino also worked at the company, previously, when it was known as SGS-Thomson. When he joined the company in 1995 he started work as an analog designer at the company’s facility in Cornaredo, Milano, and then transferred in 1997 to its Catania site where he worked on analog design as a team leader focusing on portable equipment design. In addition, from 2003 to 2005 he worked at Maxim Integrated Products as a dc-dc converter designer. Ribellino graduated in electronics from Palermo University.
Articles written by Calogero Ribellino in How2Power Today:
12/15/14Bandgap Voltage Reference Achieves High Performance At Low Supply Voltages

John Roberts
John Roberts is one of the co-founders of GaN Systems. He has been involved as a founder or co-founder of several semiconductor companies including SiGe Semiconductor and Tundra. Prior to these entrepreneurial activities he held positions at MOSAID, Control Data, Microsystems International, Siliconix, and GE Semiconductor. John holds an M.Sc. degree obtained from Swansea University.
Articles written by John Roberts in How2Power Today:
05/15/14On-Chip Drivers Enable High-Current, Normally Off GaN Transistors (Part 1)

Brian Rosario
Brian Rosario joined Maxim Integrated as an applications engineer in 2013. He has a BSEE from Santa Clara University in California.
Articles written by Brian Rosario in How2Power Today:
07/15/15Two PSE Controllers Deliver 80 W For Class 5 PoE Power Injector

Nazzareno (Reno) Rossetti
Nazzareno (Reno) Rossetti is a seasoned analog and power management professional, a published author and holds several patents in this field. He holds a doctorate in electrical engineering from Politecnico di Torino, Italy.
Articles written by Nazzareno (Reno) Rossetti in How2Power Today:
12/15/16Correct Snubber Power Loss Estimate Saves the Day

Jiri Ryba
Since 2003, Jiri Ryba, Ph.D, has been an application engineer at STMicroelectronics. His focus is currently on 32-bit PPC-based microcontrollers. Before he joined STMicroelectronics, he worked for Motorola focusing on Motor Control applications. He produced several technical papers and participated in two patents. In 1999, he attained his Honors Degree at Electrical faculty C.T.U Prague, Czech Republic, and did his post graduate work in electrical machinery, apparatus and drives, concluding with a Ph.D. Thesis titled “AC/DC Converter with Sine Wave Input Current.”
Articles written by Jiri Ryba in How2Power Today:
08/15/14Inductance-Measuring Algorithms Speed Start Up Of Sensorless BLDC Motors

Steve Sandler
Steve Sandler has over 30 years of experience in engineering. He is the founder and CTO of AEi Systems, LLC and is responsible for worst-case circuit analysis of power, RF, and linear systems as well as the design of AEi Systems’ line of rad-hard dc-dc converters. Mr. Sandler is president of SM Sandler Holdings, LLC and is a recognized author, educator and entrepreneur in the areas of power, RF and instrumentation
Articles written by Steve Sandler in How2Power Today:
12/15/14Voltage References Behaving Badly: Output Caps Are Key Source Of Poor Stability
09/15/14Video: PDN Basics For Power Designers (Part 1): What’s A PDN?
09/15/14Video: PDN Basics For Power Designers (Part 2): Keep Impedance Flat
09/15/14Video: PDN Basics For Power Designers (Part 3): Impedance Matching Is Critical
02/15/14Inside the 21st Century Power Test Lab
01/16/14Troubleshooting Distributed Power Systems (Part 8): Making Time Domain Measurements
12/16/13Troubleshooting Distributed Power Systems (Part 7): Measuring Ripple
11/15/13Troubleshooting Distributed Power Systems (Part 6): The Switch Node
10/15/13Troubleshooting Distributed Power Systems (Part 5): Using Current Injectors
09/16/13Troubleshooting Distributed Power Systems (Part 4): Measuring Impedance Using Vector Network Analyzers (Two-Port Tests)
08/15/13Troubleshooting Distributed Power Systems (Part 3): Measuring Impedance Using Vector Network Analyzers (One-Port Tests)
06/14/13Troubleshooting Distributed Power Systems (Part 2): Impedance Is The Critical Measurement
05/15/13Troubleshooting Distributed Power Systems (Part 1): Why Stability Matters
05/24/12Troubleshooting EMI: Use Versatile Instrument And Preamp To Search For Embedded Noise
08/31/11Component Aging Is Primary Hurdle In Design Of High-Temperature Power Converters
04/29/11An Accurate Method For Measuring Capacitor ESL
09/24/10Powering RF Systems: Why So Many Power Supply Designs Have Problems and What IC Suppliers Should Do About It
05/27/10Lost in Space: Unpredictable Aging Can Send Resistor Accuracy Way Off Course

Benjamin Sarpong
Benjamin Kwame Sarpong is a systems and applications engineer for TI’s Battery Management Group. He received his BSEE and MSEE from the University of Virginia. He also holds an MBA Degree from the McCombs School Of Business at the University of Texas, Austin. Ben has been at TI for 13 years and served in several roles during this time. He is a senior member of the TI Technical Staff. He previously held the position of engineering operations manager in the TI Storage Products Group. Ben is also a co-sponsor of the Texas Instruments—Africa Analog University Relations Program, where he is working with universities in Ghana to develop the mixed-signal design talent and in collaboration with Cadence has setup a Cadence Design Lab at the Kwame Nkrumah University of Science and Technology in Ghana.
Articles written by Benjamin Sarpong in How2Power Today:
02/29/12A Guide To Selecting Battery Management Controllers When Designing Li-Ion UPS Systems

Paul L. Schimel
Paul Schimel spent his early years developing a wide ranging interest in all this electrical and mechanical, investigating and eventually repairing all types of equipment. He was working conventional machine tools and welding by 14. Through high school, he fixed most anything that was breakable including yard equipment, two-way radio gear, power tools, TVs, and stereos. He attended the School of Electrical Engineering at the University of Illinois at Urbana Champaign, specializing in power electronics where he earned a BSEE degree. After this, he spent eight years in successful design engineering roles in consumer equipment including power supply design for projection and direct view televisions and telecommunications equipment including ring generators, battery rectifiers/eliminators, dc-dc converters, and UPSs—both switch-mode and ferroresonant. He then moved on to field applications engineering where he has spent the last six years on power management support and design work for Unitrode/TI, Fairchild and International Rectifier. He has assisted successful designs from mW to MVA and from prototype stages to finished end equipment. He moonlights in broadcasting, antique test equipment restoration, metal working, wood working, TIG welding, loudspeaker building, and amateur radio (K5NJP). He holds a commercial radio telephone license, a refrigeration license, and PE license. Mr Schimel holds several patents on magnetic structures for power electronics and novel circuitry.
Articles written by Paul L. Schimel in How2Power Today:
04/15/15Don’t Throw That Switch Yet! First Steps In A Large Inverter Design
12/15/14Mission IGBT: Understanding And Specifying IGBT Modules
07/15/13Steering Through The Confusion: A Guide To IGBT Technologies, Terminology, and Operation
02/29/12Livin’ On The Edge: Switching Converter Slew Rate Is Key To Mitigating EMI In Automotive Environments
04/29/11The Magic Carpet Ride: Class D Audio Circuit Design And Some Live Testing Results
09/24/10Debunking An Old Myth: Those New Devices Will Fall Off The Board
08/19/10How To Submit A Device For Failure Analysis

Jeff Schnabel
Jeff Schnabel joined CUI in 2001 as a market research analyst, later transitioning into a product manager role and then a division manager role for CUI's V-Infinity Power Group. During his time managing V-Infinity, Jeff quickly expanded the product portfolio and customer base. Since 2009, Jeff has served as vice president of marketing. In that time, Jeff successfully established a centralized product marketing department within the company. Jeff holds a bachelors of science degree in business administration with a focus in marketing from the University of Oregon and an MBA from Portland State University.
Articles written by Jeff Schnabel in How2Power Today:
08/15/15External Power Supplies And The New Level VI Specifications: Evolution Or A Different Species?

Mike Schnecker
Mike Schnecker has a BS from Lehigh University and an MS from Georgia Tech, both in electrical engineering. He has 22 years of experience in the test and measurement industry in applications, sales and product development roles, and has specialized in signal-integrity applications including jitter using oscilloscopes and other instruments. Prior to joining Rohde & Schwarz, Schnecker held positions at LeCroy and Tektronix. While at LeCroy, he was responsible for the deployment of the SDA series of serial data analyzers. Schnecker currently serves as business development manager at Rohde & Schwarz.

Iain Scott
Iain Scott joined GaN Systems in 2012 with over 30 years of analog semiconductor design experience from National Semiconductor, Linear Technology and Mosaid. He received the CATA Alliance Innovation & Leadership Award in 1999 and his B.Sc. (Honours) in Electronic Engineering in 1977 from the University of Glasgow.
Articles written by Iain Scott in How2Power Today:
05/15/14On-Chip Drivers Enable High-Current, Normally Off GaN Transistors (Part 1)

Kevin Seaton
Kevin Seaton is currently the manager of Standard & Custom Product Engineering at VPT in Blacksburg, Virginia. Kevin received B.S. and M.S. degrees in Electrical Engineering from Georgia Tech in 2000.
Articles written by Kevin Seaton in How2Power Today:
05/15/14Using Ruggedized EMI Filters To Pass The CS101 Requirement Of MIL-STD-461D-F

Hiroo Sekiya
Hiroo Sekiya was born in Tokyo, Japan, on July 5, 1973. He received the B.E., M.E., and Ph. D. degrees in electrical engineering from Keio University, Yokohama, Japan, in 1996, 1998, and 2001 respectively. Since April 2001, he has been with Chiba University and now he is an assistant professor at Graduate School of Advanced Integration Science, Chiba University, Chiba, Japan. Since Feb. 2008 to Feb. 2010, he was with the Department of Electrical Engineering, Wright State University, Ohio, USA, as a visiting scholar. His research interests include high-frequency high-efficiency tuned power amplifiers, resonant dc-dc power converters, dc-ac inverters, and digital signal processing for wireless communication.
Articles written by Hiroo Sekiya in How2Power Today:
11/30/11Core Geometry Coefficient For Resonant Inductors

Kalyan K. Sen
Currently the chief technology officer of Sen Engineering Solutions, Kalyan K. Sen has spent 28 years in academia and industry. Sen who was selected to be a Westinghouse Fellow Engineer, was a key member of the FACTS development team at the Westinghouse Science & Technology Center in Pittsburgh. He contributed in all aspects (conception, simulation, design, and commissioning) of FACTS projects at Westinghouse. Sen conceived some of the basic concepts in FACTS technology. He has more than 25 patents and publications in the areas of FACTS and power electronics, including a book and two book chapters. He is a licensed Professional Engineer in the Commonwealth of Pennsylvania. Sen received BEE, MSEE, and PhD degrees in electrical engineering, from Jadavpur University, Tuskegee University, and Worcester Polytechnic Institute, respectively. In addition, he received an MBA from Robert Morris University. A senior member of IEEE, Sen has served the organization in many positions. In 2003, he reestablished the Pittsburgh Chapters of the Power & Energy Society and the Industry Applications Society. Both Chapters received the “Outstanding Large Chapter” awards for their activities in 2004. Under his chairmanship, the Pittsburgh Section received the “Outstanding Large Section” award for its activities in 2005. He has been serving as an IEEE PES Distinguished Lecturer since 2002. Currently, he is serving as the founding Chair of IEEE Pittsburgh Power Electronics Society Chapter.
Articles written by Kalyan K. Sen in How2Power Today:
02/15/17Phase Angle Regulation Versus Impedance Control: Which Offers Greater Control Of Power Flow On the Grid?
09/15/15Overview Of Voltage Regulation Schemes For Utility And Industrial Applications
03/13/15Practical Power Flow Controller Brings Benefits Of Power Electronics To The Grid

Mey Ling Sen
Currently the President of Sen Engineering Solutions, Mey Ling Sen has spent over 15 years in industry. She worked as an Engineering Consultant at Westinghouse and ABB. She is the co-inventor of the Sen Transformer—a SMART Power Flow Controller that is based on functional requirements and the most cost-effective power flow control solution. She is the coauthor of the book titled, Introduction to FACTS Controllers: Theory, Modeling, and Applications, IEEE Press and John Wiley & Sons, Inc. 2009, which is also published in Chinese. Sen received BSEE and MEE degrees in electrical engineering, from Worcester Polytechnic Institute and Rice University, respectively. A member of IEEE, Sen has served the organization in many positions. Under her leadership, IEEE Pittsburgh Section PES and IAS Chapters received Best Chapter Awards. She also served as the Section Treasurer and Co-Chair of Women In Engineering affinity group and Vice Chair of Pittsburgh Power Electronics Chapter. She led her Club and Area to win the President’s Distinguished Awards from Toastmasters International in 2006-8.
Articles written by Mey Ling Sen in How2Power Today:
02/15/17Phase Angle Regulation Versus Impedance Control: Which Offers Greater Control Of Power Flow On the Grid?

Upal Sengupta
For the past year, Upal Sengupta has been Texas Instruments’ marketing manager for portable power. Prior to that, he worked as an applications and systems engineer in TI’s battery management and power conversion business units. Before coming to TI, Upal was a power system design engineer for mobile phone and portable computer OEMs, and a customer for both TI and National Semiconductor components. Upal has a BSEE from the University of Illinois and MSEE from Michigan State University.
Articles written by Upal Sengupta in How2Power Today:
07/27/11How To Implement A 5-W Wireless Power System

Hemal Shah
Hemal Shah is the head of systems products at Avogy where Avogy's bulk GaN products are leveraged to make state-of-the-art power electronics systems. Prior to Avogy, Shah was the director, strategic marketing and applications at International Rectifier where he was responsible for new technology platform development, product strategy and tactical business development for a $400M product line. Shah has authored many IEEE publications and power electronics and technical magazine articles. He has an MSEE from RPI, Troy, NY and an MBA from IE business school, Madrid.
Articles written by Hemal Shah in How2Power Today:
03/15/13Vertical Devices In Bulk GaN Drive Diode Performance To Near - Theoretical L imits

Fionn Sheerin
Fionn Sheerin currently serves as the senior product marketing engineer for the Analog and Interface Products Division at Microchip Technology. In this role he defines and promotes Microchip’s digitally featured analog power controllers. Prior to this, he worked for ON Semiconductor as an applications engineer, developing discrete power devices for SMPS and induction heating circuits. Sheerin received a Master of Science in Electrical Engineering from Arizona State University, with an emphasis in mixed-signal electronics, as well as a Master of Business Administration with an emphasis in finance.
Articles written by Fionn Sheerin in How2Power Today:
10/15/16Tradeoffs In Digital, Analog, And Hybrid Power Supply Control

Anastasios Simopolous
Anastasios Simopolous is the CEO and senior design engineer at Beta Dyne. Prior to launching this company, Simopolous cofounded Conversion Devices Inc. (CDI). He has 35 years of experience in analog circuit design and holds six patents on dc-dc converters. He has a B.S. in electrical engineering (EE) from University of Massachusetts Dartmouth and an M.S EE from Northeastern University.
Articles written by Anastasios Simopolous in How2Power Today:
08/15/13A Guide To The Operation And Use Of Input EMI Filters For Switching Power Supplies

Howard Sin
Howard Sin is principal engineer at Panasonic Semiconductor Solutions (PSCS), where he has worked since 2004 and is currently a principal engineer leading the WBG devices business development, technical marketing and application support in the U.S.A. In addition, Sin has over nine years of experience in SMPS technology designing ultra-low standby power supply solutions. He holds a master of science degree in Power Engineering from the Nanyang Technological University, Singapore.
Articles written by Howard Sin in How2Power Today:
09/15/15Novel GIT Structure Solves Current Collapse In GaN Power HEMTs

Grant Smith
Grant Smith is a systems engineer working in Texas Instruments’ (TI) wide bandgap group since 2013. Previously, Grant was a strategic business development director in TI’s worldwide strategic marketing organization, and before that, an analog field applications engineer. Grant’s areas of specialization are RF, high-speed signal processing, instrumentation and microcontroller-based product design. He has published numerous papers for IEEE conferences and has six signal processing patents. Grant earned his BSEE and MSEE from the University of South Florida, Tampa. Grant can be reached at ti_grantsmith@list.ti.com.
Articles written by Grant Smith in How2Power Today:
01/15/16Tips And Tricks For High-Speed, High-Current Measurement

Jens Sorensen
Jens Sorensen is a system application engineer at Analog Devices where he works with motor control solutions for industrial applications. His main interest is control algorithms, power electronics and control processors. While currently focusing on industrial applications Sorensen developed motor control and power electronics for appliance and automotive applications earlier in his career.
Articles written by Jens Sorensen in How2Power Today:
01/15/15Model-Based Design Streamlines Embedded Motor Control System Development

Kevin Speer
Kevin Speer joined Littelfuse in January 2015 as the business development manager responsible for providing strategic direction for the growth of IGBT and wide-bandgap power semiconductor business at Littelfuse. In addition to promoting and developing multi-chip IGBT module technology, Kevin has been involved in SiC materials, devices, and applications research since 1999. He earned a BSEE from the University of Arkansas in 2004, an M. Eng. from Case Western Reserve University (CWRU) in 2007, and a PhD in electrical engineering from CWRU in 2011.
Articles written by Kevin Speer in How2Power Today:
06/15/17Development Tools Aim to Overcome Designers’ Hesitation About SiC MOSFETs

Nagarajan Sridhar
Nagarajan Sridhar is a marketing manager focusing on new product development and growth of the high-voltage gate-driver business at Texas Instruments. Sridhar was a founding member of TI’s Solar Energy Lab and has written numerous articles and conference papers on renewable energy solutions. He has a Bachelor of Technology degree from the Indian Institute of Technology Madras, master’s and Ph.D. degrees from the State University of New York at Buffalo, and a master’s degree in business administration from Indiana University Bloomington. Sridhar can be reached at ti_sridhar@list.ti.com.
Articles written by Nagarajan Sridhar in How2Power Today:
04/15/16Gate Driver ICs Enable Higher Efficiency In Air-Conditioning Systems

Cornel Stanescu
Cornel Stanescu graduated in 1984 with a Master’s degree from the Faculty of Electronics of the Politehnica University of Bucharest. In 1998, Stanecu obtained his PhD in Microelectronics. Between 1984 and 1996 he was with ICCE (Development Center for Electronic Components) being involved in analog design, mainly in bipolar technology, developing voltage regulators, precision operational amplifiers and thermal sensors. From 1996 to 1998 he was with SEMICONIX Design, as technical manager for analog ICs. Since 1998, he has been working with the Romanian Catalyst group (now part of ON Semiconductor) as a design manager or technical lead for digital potentiometers, LDOs and thermal sensors, all in CMOS technology. Since 1984, Stanecu has been a visiting lecturer at the Faculty of Electronics of “Politehnica” University of Bucharest, teaching, both in Romanian and English languages, Project and Seminary classes at Analog Integrated Circuits course. He is also the main author of five patents (one Romanian and four U.S.) and has more than 30 papers presented at the Romanian Annual Semiconductor Conference (CAS), many recognized with best-of-the-section awards. For the last 10 years, Stanecu has been a member of the Paper Review Board and chairman at the same conference. An IEEE member since 1994, he was also a reviewer for the IEEE Transaction on Circuits and Systems II: Express Briefs.
Articles written by Cornel Stanescu in How2Power Today:
05/24/12Internal LDO Circuit Offers External Control Of Current Limiting

Johan Strydom
Johan Strydom is currently the head of Applications Engineering at EPC Corporation. He received his Ph.D from the Rand Afrikaans University, South Africa in 2001. From 1999 to 2002 he was working as a GRA and post-doctoral researcher at the Center for Power Electronics (CPES), Virginia Tech. Prior to joining EPC, he held various application engineering positions at International Rectifier Corporation (IRF) and more recently at Linear Technology Corporation (LLTC), working on a wide range of consumer and industrial applications including motor drives, class-D audio, hybrid power modules and dc-dc converters for VRM and POL.
Articles written by Johan Strydom in How2Power Today:
09/27/11How2 Get From AC To Below 1 V With eGaN FETs
11/23/10High Step-Down Ratio Buck Converters With eGaN Devices
06/29/10How2 Get The Most Out Of GaN Power Transistors

Joel Turchi
Joel Turchi holds an engineering degree from the ENSEEIHT school, which is part of the National Polytechnic Institute of Toulouse. With 20 years of power supply design experience at Motorola and ON Semiconductor, Joel is a regular contributor of application notes for ON Semiconductor as well as articles for trade magazines. He holds 12 issued U.S. patents pertinent to control techniques, whereas six others are pending. Joel has originated several new concepts in the power conversion arena through the introduction of PWM and PFC controllers. Among these circuits are notable devices such as the MC44608 controller for flyback converters with secondary reconfiguration, the NCP1653 CCM PFC controller and the NCP1631 interleaved PFC controller.
Articles written by Joel Turchi in How2Power Today:
10/25/12Frequency-Foldback Technique Optimizes PFC Efficiency Over The Full Load Range

Yann Vaquette
Yann Vaquette has been an application engineer at ON Semiconductor in Toulouse, France since 2011.In this role he has developed several switching controllers dedicated to the flyback topology. After working on the design of high-frequency quasi-resonant flyback converters, he has developed a high-density version of a 45-W notebook adapter. He now handles the primary-side regulated controllers family dedicated to travel adapter applications. Yann graduated from the CESI engineering school. During his study, Yann worked part time with ON Semiconductor in Toulouse for three years before being hired as an application engineer in the ac-dc business unit.
Articles written by Yann Vaquette in How2Power Today:
03/15/17Building An Average Model For Primary-Side Regulated Flyback Converters

Marko Vekic
Marko Vekic, received the Dipl.-Ing., M. S. and Ph.D. degrees in electrical engineering from the Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia in 2005, 2007 and 2014, respectively. Since 2005 Marko has been employed on the Faculty of Technical Sciences in the Department of Power Electronics and Electrical Machines, first as a teaching and research assistant and then from 2014 as an assistant professor. In 2014 Marko co-founded PERUN Technologies. His expertise includes grid-connected converters and power electronics control algorithms, while his main activities are focused on product development.
Articles written by Marko Vekic in How2Power Today:
08/15/16Open HW/SW Platform Accelerates Development Of Control Solutions For Power Electronics

Ron Vinsant
Ron Vinsant joined Vishay Siliconix as senior staff FAE in May 2014. With more than 30 years of experience in analog and digital power systems design, he has demonstrated success in engineering and application engineering roles at technology companies both large and small, including Powervation, Fairchild, Zilker Labs, SOMA Networks, Linear Tech, and Teledyne. Prior to joining the power industry, he studied physics at U.C. Berkeley, Calif.
Articles written by Ron Vinsant in How2Power Today:
07/15/16Four-Terminal Inductor Achieves High-Accuracy Current Measurements For POLs (Part 2): Sources Of Error
02/16/16Four-Terminal Inductor Achieves High-Accuracy Current Measurements For POLs (Part 1): Inductor Design

Paul Vrabel
Paul Vrabel has worked at Sandia National Laboratories for 25 years. Most of those years were designing test circuits, fixtures and testers for various components throughout the Labs. During the past seven years, he has worked in the Magnetics Department designing, developing, and qualifying function, in-process and design testers. Paul is a member of the Product Realization Team (PRT). Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.
Articles written by Paul Vrabel in How2Power Today:
01/26/10Testing Military Grade Magnetics: Transformers, Inductors and Coils

Raimund Wagner
Raimund Wagner is the product manager for Rohm Semiconductor’s EPM group, which is responsible for MCUs, sensors and drivers. Previously, he served as a product support engineer for MCUs and sensors. Prior to joining Rohm, Wagner was an assistant manager for product management, an assistant manager for customized product solutions, and an ASIC design engineer at OKI Semiconductor Europe. He graduated from the University of Kaiserslautern with an engineering diploma in microelectronics.
Articles written by Raimund Wagner in How2Power Today:
10/15/15Controller IC Eases Design Of Quasi-Resonant AC-DC Converter Using SiC Power Switch

Ed Walker
Ed Walker is president of Design/Analysis Consultants, Inc. (DACI), a consulting firm specializing in design validation, risk assessment, and optimization of electronics and electromechanical technologies. Walker is the author of The Design Analysis Handbook, A Practical Guide to Design Validation (Elsevier). He is also the creator of Design Master, a probability-based analysis software tool, which complements the handbook. You can follow Ed through the DACI Newsletter and the Engineering Thinking blog. Ed also writes edgy psychological fiction.
Articles written by Ed Walker in How2Power Today:
07/30/12Use Worst-Case Analysis Tool To Efficiently Validate Your Designs

Gordon Wang
Gordon Wang is in product line marketing for Fairchild Semiconductor’s computing product segment. He has been with Fairchild for over seven years, and has experience in development and marketing positions in the power electronics industry.
Articles written by Gordon Wang in How2Power Today:
09/28/12A More-Efficient Half-Bridge LLC Resonant Converter: Four Methods For Controlling The MOSFET

Dewight Warren
Dewight Warren is a product definer in the Mixed-Signal Business Unit at Maxim Integrated Products. He has a BSEE from the University of Florida and an MBA from the University of Texas at Dallas.
Articles written by Dewight Warren in How2Power Today:
06/24/11Add A Black Box To Your Big (Or Small) Box

Ed Wenzel
Ed Wenzel is an applications engineer for STMicroelectronics in Schaumburg, Ill. He joined the company in June 1998 in the power lab for various power supply applications. He has more than 40 years experience in the power field with various topologies and semiconductors. Ed has a BSEE degree from Northeastern University in Boston. He has publications and app notes in the power supply area and for LED applications. Ed has been awarded two patents.
Articles written by Ed Wenzel in How2Power Today:
05/27/11Eliminate The Guesswork When Selecting Primary Switch VDD Capacitors
03/30/11Adjustable Clamp Circuit Enables Use of Lower-Voltage MOSFET In High-Voltage Flybacks

Bob White
Bob White is currently chief engineer at Embedded Power Labs and is a consultant to EPC. He has over 30 years experience in power conversion and has held management and individual contributor roles in product development, applications and systems engineering, and power electronics technology development. Bob is the principal author of the PMBus specifications. He has a BSEE from MIT, an MSEE from Worcester Polytechnic Institute, and is a Fellow of the IEEE.
Articles written by Bob White in How2Power Today:
11/23/10High Step-Down Ratio Buck Converters With eGaN Devices

Tim Wilkerson
Tim Wilkerson joined Analog Devices in 2001 as a senior field applications engineer located in San Jose, Calif. Prior to that Tim was with STMicroelectronics and Waferscale Integration in central applications. Previous work includes 20 years in design and development for several companies in the Midwest, most recently at Basler Electric working on protective relays for power systems. Tim received a BSEE from Purdue in 1976 and an MSE with Electrical option in 1997 from Southern Illinois University.
Articles written by Tim Wilkerson in How2Power Today:
09/17/09Switching-Regulator Insights: Achieving Longer Battery Life in DSP Systems

Ernie Wittenbreder
Ernie Wittenbreder is widely recognized in the industry from his seminars, publications, and many patents. His areas of expertise include topology selection, design tradeoff decision making, high-efficiency design, soft switching, gate drivers, and design for EMC. His applications experience spans a broad range including high reliability and extremely low-noise converters for military and aerospace, telecommunications, solid-state lighting, very high density power supply in package (PSIP) converters, and a wide variety of commercial and industrial applications. Wittenbreder has developed a power converter computer simulation product and SiC gate driver IC. He also has a great deal of litigation experience in patent infringement lawsuits. Wittenbreder began his career as a physics professor and holds MS Physics and MSEE degrees and BS, math and physics.
Articles written by Ernie Wittenbreder in How2Power Today:
07/15/16Subharmonic Behavior In Current Mode Control (Part 2): The Causes And Cures At Low Duty Cycles
05/16/16Subharmonic Behavior In Current-Mode Control (Part 1): The Causes And Cure At High Duty Cycles
02/16/16Optimal Switch Timing Circuits for Soft-Switching Converters (Part 2): Circuits for Different Switch Functions
01/15/16Optimal Switch Timing Circuits (Part 1): The Relationship Between Switch Timing And Available Energy
12/17/15Leakage Inductance (Part 3): Improving Power Supply Filtering, Efficiency And Density
11/16/15Leakage Inductance (Part 2): Overcoming Power Losses And EMI
10/15/15Leakage Inductance (Part 1): Friend Or Foe?

Chapin Wong
Chapin Wong is an associate member of the Technical Staff for Maxim Integrated. He joined Maxim in 2013 after completing his undergraduate degree in electrical engineering at the University of California, Davis. He is currently with the Systems Applications team supporting customers with Maxim’s signal-chain product line.
Articles written by Chapin Wong in How2Power Today:
12/15/14Amplifier IC Generates A Negative Voltage Reference With The Fewest Parts And A Single Supply Rail

Albert Wong
Albert Wong is a graduate of UCLA. He subscribes to his philosophy of “Life is all about taking chances and learning from mistakes. It is necessary to have the passion of continued learning and have fun in life.” In his free time, he enjoys playing basketball, hiking, and playing board games with friends and family. He also likes to play classical music and video games to unwind after a long day. Albert plans to attend grad school in the biomed arena.
Articles written by Albert Wong in How2Power Today:
06/15/15Infrared Light-Based Battery Charging And Communications May Improve Convenience And Robustness Of Implantable Medical Devices

LK Wong
L. K. Wong received his Ph.D. degree at the Hong Kong Polytechnic University in 1999. Wong joined National Semiconductor (now Texas Instruments) as a senior product application engineer in 2006, working in the area of power electronics including modeling, control, and dc-dc power converter design. Currently, he is focusing on high-efficiency, high-performance LED driver design for general illumination and backlight applications. He is a member of the IEEE.

Kern Wong
Kern Wong is a principal applications and design engineer for advanced power management unit (PMU) ICs and regulators in Texas Instrument’s Silicon Valley Analog Mobile Devices Power Group (formerly National Semiconductor). Wong has over three decades of experience working with analog circuits, bipolar logic ICs, CMOS mixed signal ICs and microprocessor-based systems. He holds over a dozen patents in a variety of electronic technologies, including bandgap reference, PLL_clock gen and PMU ICs. Wong received his BSEE and MSEE from UC Berkeley and Washington University, respectively.
Articles written by Kern Wong in How2Power Today:
10/15/13Demystifying PSRR Specifications For LDOs

Huixian Wu
Huixian Wu currently holds the position of reliability manager for Vishay Intertechnology. She is a member of IEEE and AEC, and is the author of over 30 papers. Ms. Wu holds a B.S. in material science and M.S. in semiconductor materials from Zhejiang University; an M.S. in reliability engineering from the University of Maryland, and a Ph.D. in electrical engineering from Lehigh University.
Articles written by Huixian Wu in How2Power Today:
03/30/12Failure Analysis On Power MOSFETs With Copper Wire Bonds

Felix Yao
Felix Yao joined Integrated Device Technology (Shanghai) Co., Ltd. in 2010 and currently serves as a senior application engineer. Felix brings over 10 years application experience in consumer and industrial products and holds a B.S. degree in electrical engineering from Nanjing Southeast University.
Articles written by Felix Yao in How2Power Today:
05/27/11Energy Meter Design Operates Accurately Over Wide Current Range

Bryan Yarborough
Bryan Yarborough currently serves as a product marketing engineer for Vishay Intertechnology’s Vishay Dale brand, specializing in surface-mount Power Metal Strip current-sense resistors. Previously, he has served as applications engineer at TT Electronics IRC and Saft Batteries. Yarborough holds a bachelor’s of science degree in computer science and an MBA from Appalachian State University.
Articles written by Bryan Yarborough in How2Power Today:
05/16/16Metal Alloy Resistors Offer Robustness And Other Benefits For Current Sensing

Jae-Eul Yeon
Jaeeul Yeon serves as a principal application engineer at Fairchild Semiconductor, where he has worked for over six years. A specialist in power electronics, Yeon is now in charge of HV discrete products in consumer power supply systems such as display power supplies, induction cooking inverters, health care systems, etc. Yeon received his Ph. D. degree in electric and electronics engineering from Hanyang University in 2006.
Articles written by Jae-Eul Yeon in How2Power Today:
05/15/13IGBT With Intrinsic Body Diode Improves Performance Of Single-Ended-Resonant Inverters In Induction Heating Applications

Fred Zhu
Fred Zhu has more than 17 years of experience in the regulatory compliance industry including five years of inverter and converter testing for products marketed in the U.S.A., Canada, and Europe. He is based in the Pleasanton, Calif. office of TÃœV Rheinland, which operates a unique network of nine testing laboratories for various power-level inverters located in the U.S.A., Australia, Germany, Greater China (Shanghai and Taiwan), Hungary, India, Italy and Japan.
Articles written by Fred Zhu in How2Power Today:
03/15/14Do You Know The ABCs Of Inverter Testing?

Philip Zuk
Philip Zuk is currently the director of market development for high-voltage MOSFETs for Vishay Siliconix where he is working to grow the business with the company’s new planar and superjunction technologies while taking on an additional role in business development for the implantable (life sustaining) medical market. Philip brings 20 years of business and technical experience to the table in the development and marketing of semiconductor devices and microcontroller-based electronic systems. Prior to joining Vishay, he held marketing positions at Microsemi and Medallion Instrumentation Systems as well as engineering positions at Fairchild Semiconductor and Vansco Electronics. Philip holds two patents and a trade secret award in RF technologies and has published a number of trade magazine articles in the power semiconductor field. He holds a BScEE and an MBA, both from the University of Manitoba, Winnipeg.
Articles written by Philip Zuk in How2Power Today:
04/15/15Application-Specific FOM: Key To Choosing The Right MOSFET

Bob Zwicker
Bob Zwicker received a BSEE in 1974 from North Carolina State University and began designing switching power supplies in 1980. He has one patented invention for a method of secondary-side control of synchronous rectifiers. Bob became an applications engineer in 2002 and began doing semiconductor power applications with Analog Devices in 2005. He lives and works out of his home in Olympia, Wash.
Articles written by Bob Zwicker in How2Power Today:
02/16/16How It Works: The Current Doubler Demystified
09/15/14Topology Twists And Circuit Tricks Improve Performance Of Multi-Output Converters
05/24/12More Boost With Less Stress: The SEPIC-Multiplied Boost Converter

Sudharshana _
Sudharshana received his B.E degree in Electronics and Communication Engineering from Visvesvaraya Technological University, India in 2009 and his MTech from MIT, Manipal University, Manipal, India, in Power Electronics Systems and Control. He is currently working as a software engineer at Strategic Technology Group, Pune, India. His areas of interests are modeling and control of resonant and PWM dc-dc converters, embedded system design and development of motor drives hardware and firmware.

 
   
   
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