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UCC28711: Measurement method of Bode Plot

T Kishi
Genius 4425 points
Part Number: UCC28711

Hi

My Customer has questions.Please Cooperate me.

Customers are using UCC28711 in a flyback.

[1]. How do I measure Bode Plot?

[2].If [1] is impossible, how do you judge stability?

Best Regard

T Kishi

  • 0
    TI__Expert 7395 points

    T Kishi,

    Thanks for your question here.

    1) You can't measure traditional bode plot with this device or other similar PSR controllers

    2) These devices are internally compensated. But to be sure, you can test the Vout under a load transient to determine stability. See here as an example of how to do that:

    Regards,
    John