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BQ76200: BQ76200 replacement for TIDA-00792 design

Jonathan Navor
Expert 7845 points
Part Number: BQ76200
Other Parts Discussed in Thread: BQ78350, , TIDA-00792, BQ76940, BQ769200

Hi Team,

Good day. Customer would like to use BQ78350, BQ76940, BQ76200 for BMS design. Given that the BQ76200 isn´t available, Is there a possible alternative for this device? Their application is similar to TIDA-00792 design.

Thank you in advance for your support. 

Best regards,
Jonathan Navor
Texas Instruments | Customer Support Center

  • 0
    TI__Guru* 77333 points

    Hi Jonathan,

    Unfortunately there is no alternative part number that can replace this device. Hopefully the lead times for this device are not too long.

    Best regards,

    Matt

  • 0 in reply to Matt Sunna
    Expert 1530 points

    Hi Matt,

    Since the delivery dates for the BQ76200 are at least a year from now there must be something we can use to get high side FETs to work with the BQ769200 chips?

    Thanks again,

    Richard

  • 0 in reply to Richard Cooke
    TI__Expert 7035 points

    Hi Richard,

    Matt can continue to comment on the technical solutions, but I would like to explain the lead times a little bit more. We are experiencing some very severe supply shortages at this time. Our team is doing the best it can to allocate material in order to support our customers. For large quantities, we recommend that you place orders as early as possible so we can plan accordingly. For smaller quantities, ti.com store will still be your best option. We are aware that some devices have been out of stock on ti.com for quite some time so if you have any urgent sample needs, please have your local sales representative contact me by e-mail and I will see if there is something we can do.

    Thanks,

    Shawn Hinkle

  • 0 in reply to Matt Sunna
    TI__Expert 7845 points

    Hi Matt,

    If our customer will only use BQ78350 and BQ76940, what will be the inconvenients or disadvantages of a BMS using low-side FET?

    Best regards,

    Jonathan

  • 0 in reply to Jonathan Navor
    TI__Guru* 77333 points

    Hi Jonathan,

    Many users use low-side FETs, so this is very common. The main challenge is if the FETs are open due to a protection triggering, it can be difficult to communicate with the PACK since PACK- is no longer connected to the battery ground. The slides below illustrate this.

    7041.System isolation3.pdf

    Best regards,

    Matt