Power Regulator for Driving Pulse Width Modulator
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United States of America Patent
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Issued Date -
May 23, 2013
app pub date -
Nov 5, 2012
filing date -
Nov 18, 2011
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Abandoned
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Abstract
A voltage regulator that modulates the switching of a switching circuit to regulate the output voltage level supplied to a system. The regulator uses a comparator circuit to compare a reference signal to an analog signal derived from the output voltage of the regulator, and outputs a binary signal based on the comparison. The regulator may use a counter circuit that interrogates the binary signal from the comparator circuit and generates a counter signal proportional to, for example, the duration of the binary signal when it stays in one of the two binary states. The regulator then uses a trigger circuit that generates a signal based on the counter signal to effectuate the modulation of the switching of the switching circuit. The reference signal may be modified by a hysteresis level adjuster to force a triggering event at the switching circuit.
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