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Hi, this is regarding the PFC controller NCP1608 IC. I want to design my PFC boost output stage with 400W, 400V rating. Can this IC support and using a flyback transformer using auxiliary winding as VCC source?

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NCP1607 alternative

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NCP1605BDR2G Can we confirm the part number according to the marking? No label

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Dear ON Semiconductor Team, I am developing an active rectifier with PFC using NCP1608 to control two MOSFETs. Could you provide a simulation model (Ltspice or similar) or relevant design references for this? Thank you! Best regards,

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why output voltage fall down with NCP1608

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For PFC controller NCP1608 to work, do we need to connect the circuit to load?