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BQ27426: chem ID

user4134045
Intellectual 320 points
Part Number: BQ27426
Other Parts Discussed in Thread: GPCCHEM

Tool/software:

Hello Sir

If we use bq27426 with cell voltage is 4.45V, is this doable? what chem IC we could use?

  • 0
    TI__Genius 16336 points

    Hello, 

    You should use the GPCCHEM tool to ensure that the chemID you are wishing to use is a good match for the cells that you are using. The link to the GPCCHEM tool I have provided has a a user's guide for how to use the tool. 

    Regards, 

    Jonny. 

  • 0 in reply to Robert
    Intellectual 320 points

    Jonny

    From spec description, bq27426 can't be programmed with specific battery chemistry proile. Three pre-defined chemistry profile are available in the device memory. So if we use GPCCHEM tool to have new chemistry profile, can we load in this new battery chemistry profile?

    Yihung

  • 0 in reply to user4134045
    TI__Genius 16336 points

    Hello, 

    No, you can only load one of the three chemIDs onto the gauge. The GPCCHEM tool will give you a report when you are finished with the tool. In this report there will be a section that tells you how good of a match your cell is with the three chemIDs. 

    Regards, 

    Jonny.