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PFC Power Supply VCC

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rffx

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I am designing a SMPS with a PFC correction circuit and then a 390V to 24 V DC-DC converter. Both the PFC chip and the DC-DC converter chip require a 12v VCC. Any suggestions for a circuit? I was thinking of using a resistor and a cap with a clamp after the diode bridge, but it is about 30 mA and that would be quite a bit of wasted power. Another option would be a flyback converter. Would running this off the Diode Bridge mess with the PFC? Any suggestions?
 

Your query is suitable to post in a regular forum. There it is likely to get replies from our daily regular experts.

These group discussions seem to have few visitors.

Recommendation: Start a new thread in the section named Power Electronics.
 

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