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Recent content by rffx

  1. rffx

    PFC Power Supply VCC

    Thank you VEIBLL! Very good ideas and suggestions. The LR745 looks promising
  2. rffx

    PFC Power Supply VCC

    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...
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