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BQ34Z100-G1: Learning Cycle Issue

faizan sunesara
Prodigy 10 points

Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQSTUDIO

bat (1).png

Hi,
I am trying to run learning cycle on bq34z100-g1 EVM for my battery(3S, 5000mAh), but facing some issues.

  1. I have run voltage calibration many times on my evm but this time it shows error(failed to enter calibration mode with command 0x2D) . SS is attached. I tried enter calibration command.     

     2. What is relation between voltage divider resistors and voltage divider value in bq studio?
         And what should be the input voltage at pin 4 (BAT)?   

     3. After calibration, some parameters like cc gain, cc offset, voltage divider gets changed. how can i  verify if that are correct?   

     4. what is difference between files with .rom, .srec and .gg extensions?   

     5.  In which case, should i use IT_ENABLE(impedence track algorithm)?

Please help me get started.

Thank You

  • 0
    TI__Mastermind 48185 points

    Hello,

    This question has been assigned within the team and will be reviewed and followed up with another application engineer when possible. In the meantime please attach any associated .log/.gg files associated with the projects

    Thank you,
    Alan 

  • 0
    TI__Guru 74576 points

    1: The gauge will auto-seal if it was sealed and you send a reset command. It won't allow the calibration command if it is sealed. You list of commands indicates that you sent a reset command after unsealing, which undoes the unseal command.

    2: Check out chapter 3.4, https://www.ti.com/lit/ug/sluuco5a/sluuco5a.pdf. This explains what the bqStudio Voltage Divider setting means and also elaborates on the external divider.

    3: You apply a known voltage to the gauge and check, if bqStudio reports this voltage.

    4: .rom is deprecated. .srec is a full firmware + data memory image. .gg is a human readable list of parameters

    5: This is issued after you configure the gauge and before you put the gauge into service.