POWER SUPPLY CONTROL DEVICE
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United States of America Patent
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Aug 27, 2015
app pub date -
Sep 27, 2012
filing date -
Sep 27, 2012
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Abstract
An electronic device is for controlling multiple switching power circuits in a power supply system. Each switching power circuit has a power clock for controlling switching of a supply side switch that enables charging. The device has respective power clock delay units. Each respective power clock delay unit provides a respective power clock at a predetermined delay based on a respective input clock. The respective predetermined delays are chosen so that said switching of respective different supply side switches occurs at respective different points in time. Advantageously the conducted emission in high frequency bands is reduced.
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