Voltage regulator compensation circuit and method

Details Voltage regulator compensation circuit and method Voltage regulator compensation circuit and method

1999-02-12

2000-05-16

Riley, Shawn

Electricity: power supply or regulation systems

Output level responsive

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

323224, G05F 140

Patent

active

060641878

ABSTRACT:
A method and circuit enable a voltage regulator to employ the smallest possible output capacitor that allows the regulator's output voltage to be maintained within specified boundaries for large bidirectional step changes in load current. This is achieved by employing an output capacitor which has a combination of the largest possible equivalent series resistance (ESR) and lowest possible capacitance that ensures that the peak voltage deviation for a step change in load current is no greater than the maximum allowed, and by compensating the regulator to ensure a response that is flat after the occurrence of the peak deviation. The invention is applicable to both switching and linear voltage regulators.

REFERENCES:
patent: 5774734 (1998-06-01), Kikinis et al.
patent: 5912552 (1999-06-01), Tateishi
Dimitry Goder & William R. Pelletier, "V.sup.2 Architecture Provides Ultra-Fast Transient Response in Switch Mode Power Supplies", HFPC Power Conversion, Sep. 1996, pp. 19-23.

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