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BQ30Z554-R1: BQ30Z55 Can't turn on the CHG FET issue.

jerry Yang
Intellectual 470 points
Part Number: BQ30Z554-R1
Other Parts Discussed in Thread: BQ30Z55

Hi sir,

     my customer is using BQ30Z55 for 2S battery pack ,now when they test the function, they find that if not connect the SMBUS, in charging mode , BQ30Z55 can't turn on the CHG Fet. it only can be active by connect the SMBUS or connect a load to discharge, the CHG FET can be turn on ,could you please help to suggest which setting will result this issue?

  • 0
    TI__Guru* 76230 points
    Hi Jerry

    Does the customer have a schematic that they can share? Can they provide log and gg files from the failing system? Is this a one off failure and do they have other functional units which they can use for comparison?

    Do they have an EVM which they can use as a reference to test their battery packs?

    thanks
    Onyx