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PFC circuit


Hi Everybody,
  could you help me to check why this PFC circuit does not work?
  The VCC of this IC only 3.5V. Does it have over voltage or over current protection?

Thanks.
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jerryzhan
LV.5
2
2005-02-18 10:03
Vac+ Vac-輸入后沒有整流,ucc2817的供電變成交流了.附Ucc2817的datasheet,可參考一下.1108692182.pdf
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canadadc
LV.3
3
2005-02-18 22:49
@jerryzhan
Vac+Vac-輸入后沒有整流,ucc2817的供電變成交流了.附Ucc2817的datasheet,可參考一下.1108692182.pdf
Thanks, Jerry. The Vac+,Vac- is from one bridge diode and capacitor. So the voltage is DC.
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