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BQ34Z100-G1: Which device of bq34z100-G1 and bq34110 do you recommend for Lead Acid battery gas gauge

K. Sasaki14
Guru 10200 points
Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQ34110, , BQ34Z100

You have two devices for Lead Acid battery gas gauge, bq34z100-G1 and bq34110.

Which device do you recommend? And please let me know the pros and cons of each device.

Best Regards,
Kohei Sasaki

  • 0
    TI__Guru* 76230 points
    Hi Kohei,
    It depends on your application. bq34z100 uses IT, while bq34110 uses CEDV algorithm and is targetted at rarely discharged applications.

    So your choice of device to use will depend on your application.

    thanks
    Onyx
  • 0 in reply to Onyx Ahiakwo
    Guru 10200 points

    Onyx-san,

    Thank you for your answer.
    Can't we use bq34110 for not rarely discharge application?
    If application is not rarely discharge, should we select bq34z100-G1?

    CEDV algorithm is used in other gas gauge device. For targeting at rarely discharge applications, is there any specialty?

    Best Regards,
    Kohei Sasaki

  • 0 in reply to K. Sasaki14
    TI__Guru* 76230 points
    Kohei-san,

    You can use the bq34110 for non-rarely discharge applications. The specialty of the bq34110 is that it has a learning load which can be activated intermittently so the gauge can learn a resistance value and determine if the battery needs to has reached end of life and needs replaced. Typical applications where you have rarely discharged batteries are server applications.
    thanks
    Onyx