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BQ34Z100: Discharge at -20°C

martin gibbs
Intellectual 520 points
Part Number: BQ34Z100
Other Parts Discussed in Thread: GPCRB

charlie dsg 225w dsgminus20C.xlsxcharlie dsg 225w 20c.xlsxHi ,

We have a requirement to discharge our Lion battery at -20°C. See attached.

The DSG data at 20°C is perfect but starting DSG with the battery at -20°C gives unusable performance from the fuel gauge.

Any suggestions to solve the issue please?

Many thanks

Martin

  • 0
    TI__Guru 73830 points
    Martin,
    Have you run the GPCRB tool for the device to optimize the Rb table for low temperature operation? Most of the ChemID's are performed with a 0 degC minimum temperature, so an Rb tweak is required to improve performance as lower temperatures. You can search GPCRB on the TI website to find the tool and input requirements.
    Tom