Method and apparatus for controlling a charge pump for rapid ini

Details Method and apparatus for controlling a charge pump for rapid ini Method and apparatus for controlling a charge pump for rapid ini

1996-12-17

1999-03-09

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327536, G05F 110, G05F 302

Patent

active

058806229

ABSTRACT:
A method and apparatus for controlling a charge pump. A detection circuit is used to assert a detect signal when a power supply voltage exceeds a first threshold voltage and deassert the detect signal in response to a trigger. The detect signal is used to force a charge pump to operate in a mode that drives the capacitive node at its output to the target voltage with reduced latency. This is particularly useful for a device which may operate the charge pump in a reduced power mode which is designed to maintain the node voltage at reduced power rather than drive it to the degree necessary for reduced latency during power up.

REFERENCES:
patent: 5264808 (1993-11-01), Tanaka
patent: 5319604 (1994-06-01), Imondi et al.
patent: 5367489 (1994-11-01), Park et al.
patent: 5519360 (1996-05-01), Keeth
patent: 5530640 (1996-06-01), Hara et al.
patent: 5532653 (1996-07-01), Adkins
patent: 5539351 (1996-07-01), Gilsdorf et al.

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