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UCC28070: ucc28070 current sample question

Dane Zhang
Expert 7915 points
Part Number: UCC28070

Hi team,

the datasheet of UCC28070 says the device sample the current of rise-up current of inductor; can the device sample the decreasing current of inductor?

  • 0
    TI__Mastermind 40520 points

    Hello Dane,

    Thank you for your interest in the UCC28070 PFC controller.

    This device is designed to sample the up-slope of the boost inductor current and synthesize the down-slope, to recreate the continuous inductor current. 
    It cannot sample the down-slope and synthesize the up-slope.

    Regards,
    Ulrich