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TPS43060: phase waveform is not stable

Polly Chung1
Intellectual 2110 points
Part Number: TPS43060

Dear team,

My customer found TPS43060’s phase waveform is not stable, could you please give us suggestions how to fix it? Please see the waveform as below. And I sent schematics by mail to you.  Thank you.

Best Regards,

Polly Chung

  • 0
    TI__Guru* 78170 points

    Hi Polly,

    Thank you for posting.  Basically I would like to see the COMP pin voltage, to see if it is loop related or noise related.  Note that I have plugged your circuit values to webench and the simulation shows stable operation.  I also plugged your circuit values to the TPS443060 Calculator, although  your circuit part selections are not aligned with the  calculator recommendations, it still shows stable design.  

    Since you are using internal email for communication, let's close this thread here.

    Thanks,

    Youhao Xi,  Applications Engineering