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UCC28064A: cross over wave form between GDA and GDB

Dexter Choi
Expert 2795 points
Part Number: UCC28064A

Dear Sir,

when Vac input is 264Vac. it happened cross over wave between GDA and GDB.

It is correct?

Z1: GDA

Z2: GDB 

  • 0
    TI__Mastermind 26870 points

    Hello Dexter,

    Thank you for your interest in the UCC28064A Interleaved PFC controller.

    The waveforms shown at Z1 and Z2 are the Vds of the two switching MOSFETs, not GDA and GDB.
    However, the phase relationship of these waveforms is correct, and therefore GDA and GDB are correct by inference.

    Regards,
    Ulrich