Gate multiplexed low noise charge pump

Details Gate multiplexed low noise charge pump Gate multiplexed low noise charge pump

1991-10-10

1992-11-17

Voeltz, Emanuel T.

Electric power conversion systems

Current conversion

With voltage multiplication means

331 1A, 331 17, 331 25, 328155, 307511, H03L 700

Patent

active

051648890

ABSTRACT:
A charge pump having gate control voltages multiplexed to gates of FET driver circuits to precisely control charge injected by the charge pump to a low pass filter network. Large capacitors between the supply voltages and the respective gate control voltage derived from the particular supply voltage provide greater noise immunity which further reduces phase errors introduced by injected charge variations. The large capacitors help to hold the gate voltages constant, further controlling the injected charge.

REFERENCES:
patent: 5068626 (1991-11-01), Takagi et al.

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