Replacing Schottky Diodes with Super Barrier Rectifier Diodes

Focus:

Super Barrier Rectifiers (SBR) developed by Diodes Inc. feature forward voltages (VF) like those of Schottky diodes, but with the higher reliability of epitaxial p-n diodes. SBRs can directly replace Schottky diodes in the secondary stages of ac-dc power supplies such as "silver-box" computer power supplies. This article presents data demonstrating how SBRs can increase power supply efficiency by 1% to 2.5%, lower diode temperature by up to 15 degrees, and provide greater avalanche rating in an 80Plus computer power supply (a multi-output two-switch forward converter).

What you’ll learn:

• How to improve ac-dc power supply efficiency by replacing Schottky diodes with Super Barrier Rectifiers

Notes:

Article appears on pages 30-33 of February issue in article archive. You must register to access articles in this magazine's archive.

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Author & Publication:

Taufik, Electrical Engineering Department, Cal Poly State University, USA, John Chiem, Diodes Incorporated, USA and Yong Ang, Diodes Incorporated, UK, Bodo's Power Systems, Feb 01 2009

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