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BQ40Z50: BQ40Z50

liting Lei
Intellectual 325 points
Part Number: BQ40Z50
Other Parts Discussed in Thread: , BQSTUDIO

BQ40Z50 gauge IC has several versions, like BQ40Z50, BQ40Z50_R1 and BQ40Z50_R2.

is there any document to state the difference among them?

Currently, we are going to use BQ40Z50_r2. but the reference use BQ40Z50.

we need to know the differene to evaluate the sw effort on this change.

please help to check on this. thanks

  • 0
    TI__Mastermind 42535 points

    Hi Iiting,

    The bq40z50-r2 and r2 are newer versions with added features. The only way to compare them is to look up the TRM for available features. In my recommendation, I would suggest that you use the bq40z50-r2 or r3 as they have the latest IT algorithm and more performance enhancements compared to the bq40z50.

  • 0 in reply to Batt
    Intellectual 325 points

    Hi batt:

          Thanks for your reply.

    From the point view of hardware side, i prefer r2 or r3 version for better performance.

    But I need to consider SW effort on this change.

    Gas gauge IC driver is owned by Qualcomm team. Qualcomm strongly recommend to use BQ40Z50 and will not offer technique support if any design change.

    So it is especially important for us to know the differences, especially sw related, like registors.

    please help to comment.

    best wishes,

    jacky

  • 0 in reply to liting Lei
    Intellectual 325 points

    In brief, is there any registor function changed? According to your expertise, if any issue when BQ40Z50 is replaced with BQ40Z50_R2?

    best wishes

    Jacky

  • 0 in reply to liting Lei
    TI__Mastermind 42535 points

    Yes, some registers are different but the gauging functionality is the same with some improvements. The recommended product now is the bq40z50-r2. You can check the register map by downloading bqstudio and opening bq40z50 v2.11. You don't need to program the gauge to see the differences.