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WEBENCH® Tools/TPS54618-Q1: Phase margin simulation result differs from datasheet description.

Part Number: TPS54618-Q1

Tool/software: WEBENCH® Design Tools

Hi TI experts,

When I used the WEBENCH to simulate phase margin, I see the results showed significantly different from different Iout with other parameters were totally same.

But this result has conflict with the description in the datasheet. This confuses us now, is there any points that we are missing? Or can you explain why this conflict shows?

Thank you.

datasheet description:

  • Hello,

    I don't think there is big mismatch. If you change the output current in WEBENCH the recommended circuit configuration changes as well. The different circuit has a different crossover frequency of course. If you keep the same parameters i think it will be like described in the datasheet. 

    Best regards,