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UCC28180: Schematic review

Kevin Xiong
Expert 2340 points
Part Number: UCC28180

Hi,

Sometimes, these pins VCOMP, VCC and GATE of UCC28180 are short to ground. Could you please help review the schematic as attachment? And please help analyze the short reason. Thank you so much.

Kevin Xiong

  • 0
    TI__Genius 9140 points

    Hi Kevin,

    the schematic looks good to me.

    Please double confirm whether OCP function can work normal by following your design.

    The current sense resistor should be designed at lowest input votlage at 85VAC input. And the D25 selection should be also take care, you can reach to the datasheet clamped diode section.