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Old 31st December 2008, 10:20 AM   #1
diyAudio Member
Join Date: Oct 2007
Default ac side active PFC

has anyone experience with this concept as described in

the idea of an AC inductor, and reduced losses as the PFC stage is integrated into the rectification bridge looks attractive to me ..
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Old 7th January 2009, 06:58 PM   #2
dtproff is offline dtproff  United States
diyAudio Member
Join Date: Oct 2008
Location: Plano, TX, USA
A bit... ST has a app note for a bridgeless PFC on their web site.

The problem is the this is incredable noisy from an EMI standpoint. We eventually gave up trying to use the topology.

I may try it again sometime but for now, Diodes are still too cheap.

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