Dual loop voltage regulation circuit of power supply chip

Details Dual loop voltage regulation circuit of power supply chip Dual loop voltage regulation circuit of power supply chip

2007-03-20

2007-03-20

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S112000

Reexamination Certificate

active

11208651

ABSTRACT:
A dual loop voltage regulation circuit of power supply chip is provided, comprising a capacitor for providing a voltage signal, a comparator for comparing a first reference voltage signal and the voltage signal to output forward or backward trigger signal, a first switch triggered by a forward trigger signal, a second switch triggered by a backward trigger signal, a first operational amplifier generating a first drive signal while the first and second switches are on, a first transistor switch triggered to be on by a first drive signal to provide a current source loop, a third switch triggered by a forward trigger signal, a fourth switch triggered by a backward trigger signal, a second operational amplifier generating a second drive signal while the third and fourth switches are on, and a second transistor switch triggered to be on by a second drive signal to provide a current sink loop.

REFERENCES:
patent: 6433521 (2002-08-01), Chen et al.
patent: 6661208 (2003-12-01), Rutter et al.
patent: 6707280 (2004-03-01), Liu et al.
patent: 7057310 (2006-06-01), Liu et al.

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