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TPS62160 PFM entry hysteresis?

T Kishi
Genius 4425 points
Other Parts Discussed in Thread: TPS62125

Hello

My customer has Questions.

Please tell me answer if possible.

1.PWM and PSM is switched at 1/2 the ripple current.
   Whether there is hysteresis in the threshold?
  →Customer want use MAX Current=200mA.So customer want to know the threshold.

2.How are you measuring the DataSheet of the current waveform.
  →Customer wants to compare the waveform the same conditions.

Best Regurd

T Kishi

  • 0
    TI__Guru**** 150930 points
    Thanks for beginning your post with the part number. In the future, kindly add some more words about your specific question.

    No, there is no hysteresis. But, per the D/S, the control mode is the same in PFM and PWM, so there is no issue. The TPS62125 supports 300 mA Iout and may be a better fit.

    We use a current probe around a wire in series with the inductor to measure inductor current. This is the normal way to measure it.