BRIDGELESS PFC CONVERTER AND THE METHOD THEREOF
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United States of America Patent
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Issued Date -
Nov 22, 2012
app pub date -
May 17, 2012
filing date -
May 17, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A bridgeless PFC (power factor correction) converter with improved efficiency is disclosed. The bridgeless PFC converter comprises: input terminals configured to receive an input AC power supply; an output terminal configured to provide power supply; a high frequency bridge arm comprising a first switch and a third switch coupled between the output terminal and a ground node; a low frequency bridge arm comprising a second switch and a fourth switch coupled between the output terminal and the ground node; an inductor coupled between the input AC power supply and the high frequency bridge arm; and a control circuit configured to control the switching of switches in the high frequency bridge arm and the low frequency bridge arm.
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