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Original question:

BQ40Z50: BQ40Z50-R3 (BQ40Z453-R3)

BQ40Z50: Parameters change

Gabriel Wang1
Genius 4715 points
Part Number: BQ40Z50
Other Parts Discussed in Thread: BQSTUDIO

Tool/software:

Dear Expert

We have a battery that uses your company's BQ40Z50 gauge.
The battery has a capacity of 1500mAH, a continuous discharge current of 15A, and a pulse current of 20A@2S ， The discharge ends after 360 seconds.
We would like your assistance in adjusting the fixed parameters based on the BQ40Z50-R3 firmware, as follows:
1.The Prime Relax Time has been changed from the default 300S to 15S
2.Section. Relax Time changed from default 30s to 5S
3.Res Relax Time has been changed from the default 50S to 15S
4.Change Dis Relax Time Min to 10 seconds
5.OCV Wait Time changed from default 600s to 60s

  • 0
    TI__Guru 61536 points

    What assistance do you need from TI? You can change these parameters using your host uC (smbus write commands to the addresses for these parameters for the FW version that your gauge uses) or bqStudio (data memory UI).

    I recommend changing these parameters in bqStudio followed by tests with the TI EVM and your battery.