PFC Power Supply VCC

  1. rffx
    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?
  2. rffx
    Anyone have input on this?
  3. BradtheRad
    Activity is low in group discussions. Your query is suitable for the main forums. Recommendation: Start a new thread in the Power Electronics section.
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