NPM1300 Hibernate Mode Buck1 Buck2 output status

Hi, from documentation, When NPM1300 enter Hibernate Mode Buck1 Buck2 output will be turn offed.

But for my testing with nPM1300-EK board, when using nPM PowerUP v2.22 pc software --> System Features --> Low Power Control --> Click Enter Hibernate Mode.

I found Buck1(Vout1) still has 1.8v output and Buck2(Vout2) still has 3v output. Is it expected?

  • I have further founding: 

    When at nPM PowerUP v2.22 pc software --> Regulators --> enable "Active Output Capacitor Discharge" for Buck 1 and Buck 2, then Click Enter Hibernate Mode. found Buck1(Vout1)  and Buck2(Vout2) can drop to 0V.

    Howerver, afrer about 10sec found Buck1(Vout1)  suddently has 1.8v output and Buck2(Vout2) suddently has 3v output. seems PMIC reseted. 

    Is it expected? How to sove it?

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