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BQ25895 PMID waveform question?

Chen Bogey8
Mastermind 9990 points
Other Parts Discussed in Thread: BQ25895

Hi Sir 

we have test BQ25895 PMID Load 1.5A，then Vbus plug in 5V / 1A(adapter)，PMID have unstable waveform。

Is it normal, or some wrong,due to this voltage drop cause our system shut down.BQ25895waveform.docx

  • 0
    TI__Guru**** 165886 points

    The bq25895 automatically operates in OTG boost mode up until the voltage on VBUS rises above VBUSuvlo.  The adapter is attached to VBUS, the bq25895 automatically switches back to charge mode and the adapter is connected to PMID through FET Q1, with current limited.