Method and apparatus for enhancing voltage regulator...

Details Method and apparatus for enhancing voltage regulator... Method and apparatus for enhancing voltage regulator...

2005-03-08

2008-11-04

Nguyen, Matthew V (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S282000, C323S288000

Reexamination Certificate

active

07446518

ABSTRACT:
A voltage regulator improves its transient adjustment response by amplifying error in its regulation feedback control path, including any droop-related error. Amplifying the error speeds up the voltage regulator's response to load changes and droop control adjustments by exaggerating the feedback error. Thus, in at least one embodiment, a droop control circuit imparts a droop-related offset between an output feedback signal and a reference signal responsive to a droop adjustment signal, and a response-enhancing amplifier circuit amplifies that offset for input to an error sensing circuit of a regulation control circuit. The gain and frequency response of the response-enhancing amplifier circuit may be set as a function one or more regulation stability criteria, and the response-enhancing method may be adapted to a variety of voltage regulator topologies. Such topologies include, but are not limited to, PWM regulators and hysteretic regulators.

REFERENCES:
patent: 6683441 (2004-01-01), Schiff et al.
patent: 6801030 (2004-10-01), Tai et al.
patent: 7000122 (2006-02-01), Zafarana et al.

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