Power factor correction circuit
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United States of America Patent
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Dec 29, 2015
Grant Date -
Jul 3, 2014
app pub date -
May 10, 2013
filing date -
Dec 28, 2012
priority date (Note) -
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Abstract
There is provided a power factor correction circuit including: a power conversion circuit unit controlling an inductor current according to a switching signal applied to a main switch to convert an external input voltage into an output voltage having a predetermined range; an imbalance detection circuit outputting an imbalance state signal when the external input voltage is in an unbalanced state by using the inductor current; and a soft start circuit unit performing soft starting by adjusting the switching signal when the imbalance state signal is output by the imbalance detection circuit unit.
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