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TPS23757 reference circuit question

 Hi:

may i know what's purpose for R19, C20 and D11?

  • Hi Brook,

    This RCD is soft start circuit.
    R19 and C20 are timing constant .
    The upper part of D11 offer a discharge current path, and the other one prevent RC affect the compensation loop.

    Please click the Verify Answer button on this post if it answers your question. Thanks!