Constant-on-time multi-phase switching voltage regulator and related method of generating a regulated voltage
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United States of America Patent
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Mar 17, 2015
Grant Date -
Mar 7, 2013
app pub date -
Jul 9, 2012
filing date -
Sep 5, 2011
priority date (Note) -
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Abstract
A switching voltage regulator including a comparison module configured to receive a reference voltage and a feedback voltage and to generate a comparison signal corresponding to a difference between the reference voltage and the feedback voltage, an offset module configured to generate an offset signal based on a number of active phases of the voltage regulator, an adder configured to generate a control signal based on the comparison signal and the offset signal, a plurality of pulse-width-modulated (PWM) power stages, and a control module configured to control the plurality of PWM power stages based at least in part on the control signal generated by the adder.
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