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BQ27426: How to setting Design Capacity 4.4V battery but just charge to 4.35V in really application

Jeff Chen71
Expert 1345 points
Part Number: BQ27426

Dears,

     1.The Battery Spec is 4.4v 2450mAH.  My customer charger design voltage is  4.35v,in this case the capacity is about 2300mAH.

        It's let me confuse the Design Capacity and Taper Rate should  based on 2450mAH or 2300mAh to setting.

     2.The Update Status need set to 0x00 or 0x03 after learning cycle and create golden image.

     3. For my customer I just provide GMFS file for him. Is it right?  Do I need provide  register like Control Status and Flag? Do I need to provide OTFS file?

Thanks

Best Regard

Jeff Chen

        

  • 0
    TI__Guru* 76230 points
    1. design capacity should be 2450mAh
    2. Device is designed so as to avoid having to do learning. Learning occurs on the field. if you must do learning, update status should be set to 02, at the end of learning it will be 0.
    3. Yes gmfs file is what is needed. If he uses OTFS, the gauge can be one time programmed with that file in the one time programmable memory
    thanks
    Onyx