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Problem With L6563H and L6699A(AN3233)

Question asked by reddy.amarender.001 on Jul 15, 2013
Dear all,

Am getting the big problem with my design.

In this design PFC Ckt is not starting up.

Its taking only 8.5V even increasing the capacitor at Vcc pin.

Please find the attached design and please tell me the cause for this problem.
I designed this design based on AN3233 Application notes.

Thanks in advance.

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