Negative-voltage charge pump with feedback control

Details Negative-voltage charge pump with feedback control Negative-voltage charge pump with feedback control

1991-07-12

1992-12-01

Howell, Janice A.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072961, 3072962, G05F 316

Patent

active

051681749

ABSTRACT:
A charge-pump circuit implements ramp control, steady-state regulation and trimming of the negative voltage pulses. The circuit includes a negative-voltage charge-pump subcircuit having multiple phase inputs, a phase-enable input, an output, a supply voltage, a reference voltage, a ramp-control subcircuit for controlling the rate of change of the voltage at the output of charge-pump subcircuit, and an amplitude-control subcircuit for controlling the amplitude of the voltage at the output of the charge-pump subcircuit. The ramp-control has an input coupled to the output of the charge-pump subcircuit and an output coupled to the phase-enable input of the charge-pump subcircuit. The amplitude-control subcircuit has an input to the output of the charge-pump subcircuit and has an output coupled to the phase-enable input of the charge-pump subcircuit.

REFERENCES:
patent: 4388537 (1983-06-01), Kanuma
patent: 4439692 (1984-03-01), Beckmans et al.
patent: 4471290 (1984-09-01), Yamaguchi
patent: 4488060 (1984-12-01), Simko
patent: 4825142 (1989-04-01), Wang
patent: 4843256 (1989-06-01), Scade et al.
patent: 5039877 (1991-08-01), Chern
patent: 5057707 (1991-10-01), Pigott

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