Primary side current controller and related power supply
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United States of America Patent
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Jul 23, 2013
Grant Date -
Sep 22, 2011
app pub date -
Oct 11, 2010
filing date -
Mar 17, 2010
priority date (Note) -
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Abstract
A primary side current controller for a power supply is disclosed. The primary side current controller includes a waveform detection unit, a calculation unit, and a switching controller. The waveform detection unit is used for detecting a waveform signal of the power supply and generating a captured signal. The calculation unit is coupled to the waveform detection unit and used for generating a selected voltage according to the captured signal and a feedback signal of the power supply. The switching controller is coupled to the calculation unit and used for generating a modulation signal according to the selected voltage and the feedback signal.
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