Author Topic: Inverting charge pump efficiency  (Read 994 times)

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Offline gaminnTopic starter

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Inverting charge pump efficiency
« on: November 04, 2019, 03:39:19 pm »
Hi,
I made this inverting charge pump: https://www.allaboutcircuits.com/uploads/articles/DPNVG.jpg . I used BAT65S diode and 2 100nF capacitors. The power supply is 3V3 and I use microcontroller to create PWM (1 kHz, 50 % duty) which drives the circuit.

The circuit itself works (there is -3V output). However, the circuit I have has almost 0 % efficiency, it consumes 13 mA when it is operating. There is nothing connected to the output of the circuit.

I need something that has quiescent current max 0.1 mA. Is this achievable with this circuit?

EDIT: I made some stupid mistake on board, the inverter has perfect efficiency. This topic can be deleted.
« Last Edit: November 04, 2019, 03:48:31 pm by gaminn »
 


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