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BQ29330/BQ20Z60-R1 DSG FET got turned OFF when charger is removed

Other Parts Discussed in Thread: BQ29330, BQ20Z60-R1


I am using BQ29330/BQ20Z60-R1, every time the external power was removed,

the Charger got turned OFF, then BQ29330 turned OFF DSG FET.

Now I am stuck with Battery power going nowhere.

What triggered BQ29330 to turn OFF DSG?

Here is the timing:

Ch1 is VBAT from Charger to Pack+

Ch2 is voltage at Gate (DSG)


As you can see, for whatever reason, BQ29330 turned OFF DSG FET much earlier than the

discharge of VBAT @ Pack+.

Thank you very much.






  • Sorry, I have to say my original post was not a good one. Since I completely mis-understood what TI Battery Management IC's could do. Please ignore my original post.

    Basically, needs to follow procedures to input proper parameters to Data Flash, Calibrate,,etc.,

    then it should work.

    Sorry for the confusion.

    Thank you.

    Cherh-Lin Chen