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BQ28Z620: Golden image compatible with BQ28z610

Michael Balourdas
Expert 5455 points
Part Number: BQ28Z620
Other Parts Discussed in Thread: BQ28Z610, , BQSTUDIO

Hello,

If I have a golden image that was created using BQ28z610, can I use the same files for BQ28z620 or would I have to perform a new learning cycle?

Thanks,

Michael

  • 0
    TI__Mastermind 27321 points

    Hello Michael,

    Learning cycles are performed so that gauges learn about the chemistry of the battery cell. The gauge learns the Qmax and Ra table. These values can be copied over.

    The only concern here is the memory mapping of both devices. They might have different registers. I suggest to download the BQ28z610 gg (configuration) file using BQstudio. Then, download the BQ28z620 gg file, and copy over the configurations from one to the other making sure they are the same registers. 

    Golden images (srec files) are not compatible. Meaning the BQ28z610's srec cannot be uploaded in the BQ28z620.

    Regards,
    Jose Couso

  • 0 in reply to Jose Couso
    TI__Expert 5455 points

    Hi Jose,

    Thanks for the reply! So once the values are copied over, we can just export a new srec for the bq28z620 correct?

    Thanks,

    Michael

  • 0 in reply to Michael Balourdas
    TI__Mastermind 27321 points

    Hi Michael,

    I suggest to calibrate the new device as well.

    As long as all modified registers are copied over, it should be ok. The challenge is making sure the register mapping is still the same. This is doable by doing bit to bit comparison in TRM and bqStudio.

    It is always good to do a sanity cycle check to make sure everything is working as expected.

    Regards,
    Jose Couso