High efficiency DC-DC converter with fast clock operation and load change response
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United States of America Patent
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May 10, 2016
Grant Date -
Jul 2, 2015
app pub date -
Sep 18, 2014
filing date -
Dec 26, 2013
priority date (Note) -
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Abstract
The DC-DC converter includes a reference voltage generating circuit that generates a reference voltage. The DC-DC converter includes a modulation clock signal generating circuit that generates a modulation clock signal. The DC-DC converter includes a modulator that performs modulation of the reference voltage in synchronization with the modulation clock signal and outputs a resulting reference signal. The DC-DC converter includes a first comparator that compares the reference signal and a first feedback signal, which is based on the output voltage, and outputs a signal based on a result of the comparison. The DC-DC converter includes a driver that shapes a waveform of a PWM signal, which is based on the signal output from the first comparator, and outputs the PWM signal with the shaped waveform to the control node.
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