Hi
I need a flyback converter with PFC. I used NCP 1651 from on semi. I used the application notes and the design aid spreadsheet for my design. But it does not work. I even built the same circuit in the application note. But it also does not work.
Have any one workes with this ic? Or can any one recommend another ic to replace this one?
I used a high frequency ferrite core transformer. It has a turns ratio of 2:1 and a Lp of 8200uH. And the MOSFET I used was 2sk3116.
I have checked the transformer and MOSFET, they are both fine. I used a 100kHz square wave as gate pulse and got voltage at the secondary. So the MOSFET and the transformer are ok.