Switch mode power supply controllers
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United States of America Patent
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Jun 23, 2009
Grant Date -
Nov 29, 2007
app pub date -
Jun 1, 2006
filing date -
May 23, 2006
priority date (Note) -
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Abstract
This invention relates to switch mode power supply (SMPS) controllers employing primary side sensing. We describe an (SMPS) controller which uses an area correlator to compare an area under a feedback signal waveform between a start point defined by said first timing signal and an end point defined by said second timing signal with a reference area. An output of the area correlator provides an error signal for regulating the SMPS output.
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