Configurable ICs Build Versatile, Low-Cost Regulated Charge Pumps

Focus:

Many battery-powered IoT applications require additional voltage levels for powering specific interface circuits, sensors, etc. Under certain operating conditions, charge pumps provide simple, efficient solutions for generating the required supply voltages. While standalone charge pump ICs can be used, charge pumps can also be implemented using a GreenPAK configurable mixed-signal IC (CMIC), which offers several advantages. These include lower cost, smaller size, multiple outputs with the same IC, programmable operating frequency, control via a serial interface, lower quiescent current, and on-chip logic for additional functions. In general, a GreenPAK solution provides the flexibility to shift the design to meet system priorities. This 16-page article explains how to design regulated capacitive charge pumps using a GreenPAK CMIC and a few low-cost external components. The regulated charge pump designs discussed in this article are extensions of unregulated designs discussed in a previously published application note.

What you’ll learn:

• How to design low-cost programmable regulated charge pump regulators using GreenPAK ICs
• How to create highly flexible, regulated charge pump designs

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Author & Publication:

Vladimir Veljkovic, Dialog Semiconductor, Belgrade, Serbia, How2Power Today, Nov 15 2018

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