Inverting charge pump

Details Inverting charge pump Inverting charge pump

1998-12-14

2000-02-01

Wong, Peter S.

Electric power conversion systems

Current conversion

With voltage multiplication means

363 62, 327536, H02M 318

Patent

active

060210567

ABSTRACT:
This invention provides a voltage inverting charge pump 20. The charge pump 20 produces an output at node 60 which is twice the magnitude of the inverse of the input voltage applied to node 50. A first set of switches 22, 24, 26, 28 are connected to the pair of pump capacitors 36, 38 and a voltage supply input so as to connect the pump capacitors 36, 38 and the voltage supply input in parallel when the first set of switches 22, 24, 26, 28 is closed. A second set of switches 30, 32, 34 is connected to the pump capacitors 36, 38, a hold capacitor 40, and an output terminal 60 so as to connect the charged pump capacitors 36, 38 in series with the output terminal 60 and in parallel with the hold capacitor 40 when the second set of switches 30, 32, 34 is closed.

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