Three-phase low noise charge pump and method

Details Three-phase low noise charge pump and method Three-phase low noise charge pump and method

2007-03-13

2007-03-13

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

With voltage multiplication means

C327S536000

Reexamination Certificate

active

11219026

ABSTRACT:
A low noise charge pump circuit includes a first terminal of a first flying capacitor selectively coupled to a first voltage during a first recharging phase and a second terminal of the first flying capacitor selectively coupled to a second voltage during the first recharging phase. The second terminal of the first flying capacitor is coupled to a precharge control circuit during a first parasitic capacitance precharging phase that occurs after the first recharging phase to cause the voltage of the first terminal of the first flying capacitor to equal an output voltage. The first terminal of the first flying capacitor is coupled to an output conductor conducting the output voltage during a first discharging phase that occurs after the first parasitic capacitance precharging phase. The second terminal of the first flying capacitor is coupled to a discharge control circuit which increases the voltage of the second terminal of the first flying capacitor during the first discharging phase until the output voltage is equal to a regulated value.

REFERENCES:
patent: 6294948 (2001-09-01), Blodgett

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