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Two-stage Charge Pump

Two-stage Charge Pump

Pulse-based Control Application

A multi-stage charge pump can push the output voltage to beyond double the input voltage. Schottky diodes are recommended for best performance.

 

Ingredients

  • Any GreenPAK
  • Three capacitors
  • Three diodes 

GreenPAK Diagram

Design Steps

  1. Create a basic charge pump design using the steps in Application: Charge Pump.
  2. Configure logic to add an inverter. Connect the inverter between an output pin and the oscillator.
  3. Connect an additional diode and capacitor between the first stage and the output stage of the charge pump. The new capacitor and diode should be the same type and value as the first stage’s components.

Resources

GreenPAK Designer files

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