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BQ4050: Comparison table between BQ76922 & BQ4050

Jade Han
Intellectual 1545 points
Part Number: BQ4050
Other Parts Discussed in Thread: BQ76922, BQ40Z50

Tool/software:

Hello experts,

My customer is interested in BQ4050 and BQ76922 for their robot vacuum cleaner battery pack pjt.

Although one is a gauge IC and one is a monitor IC, if you have any comparison table material of these two ICs could you please share with me? Customer is in the early stage and still considering different features and not fixed on which IC to use, so they asked for a comparison on these two ICs. I've tried to make a brief table, but I wasn't sure which features should be added and which shouldn't.

Thank you in advance for your help and support.

  • +1
    TI__Mastermind 28440 points

    Hi Jade,

    I do not believe we have any direct comparison material between these two parts. However, knowing the customers expectations would give more insight to which would be a better choice for their application.

    Regards,

    Anthony

  • 0 in reply to Anthony
    TI__Intellectual 1545 points

    Hi Anthony,

    Thank you for your feedback!

    It seems BQ4050 has all of below features, but does BQ76922 have all these features as well (maybe except fuel gauging)? I discussed with customer, and they understand that these two are different ICs, they just hope to know the comparison based on below features.

    features: 4cell, OVP, UVP, OCP, OTP, Short-circuit, High-side FET drive, Cell balancing, Fuse blow, communication, Fuel gauging

    Thank you.

    Best regards,
    Jade

  • 0 in reply to Jade Han
    TI__Mastermind 28440 points

    Hi Jade,

    The bq4050 will use a more in-depth algorithm compared to the monitor to complete it's gauging calculations. Also, I would look into the bq40z50 since this uses the Impedance Track Algorithm, to which the bq4050 uses the CEDV algorithm.

    Regards,

    Anthony

  • 0 in reply to Anthony
    TI__Intellectual 1545 points

    Hi Anthony,

    Thank you so much for your feedback. I also did introduce them to BQ41x50, however for now they are looking for a very low-cost solution.

    Would you know why BQ4050 is so low cost, even lower than many monitoring ICs?

    Also, would below table be correct?

    Thank you for your help and support.

    Best regards,
    Jade

  • 0 in reply to Jade Han
    TI__Mastermind 28440 points

    Hi Jade,

    Jade Han said:
    Would you know why BQ4050 is so low cost, even lower than many monitoring ICs?

    I cannot speak on the pricing of our parts, however reaching out to someone from our product marketing team here could offer more insight.

    Jade Han said:

    Also, would below table be correct?

    From a high level I believe so, however I would reach out to our monitors team to confirm this from their side. This can be done by posting a new thread with the bq76922 as the part number.

    Regards,

    Anthony