Charge Pump

Charge Pump

Pulse-based Control Application

A charge pump is a DC-DC converter that uses capacitors for energetic charge storage to create different voltage levels. It can be used to provide additional voltage levels for powering specific interface circuits, sensors etc.

 

Ingredients

  • Any GreenPAK
  • Two capacitors
  • Two diodes

GreenPAK Diagram

Design Steps

  1. Set the divider in OSC1 obtain the desired output frequency.
  2. Configure logic to provide a shutdown function, either through IO or I2C (if available)
  3. Connect a diode (D1) and Cpump between VDD and CP_DRIVE.
  4. Connect the anode of D2 to the cathode of D1.
  5. Connect Cout and Rload in parallel between the cathode of D2 and ground.

Resources

GreenPAK Designer files