• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 62 subscribers
  • Views 181 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ76200: BQ76200 damaged

Kevin Zhang
Intellectual 1760 points
Part Number: BQ76200
Other Parts Discussed in Thread: BQ76930, BQ76942

Hi team,

Below is the customer schematic. They have encountered BQ76200 breakdowns recently. And the BAT,PACK.DSG,CHG pin short circuit to ground.

Customers use pre-charged MOS for pre-discharge. Is this application feasible?

Does the series-parallel connection method of customer charging MOS have certain risks? Can you help to review it? Many thansk.

  • 0
    TI__Mastermind 33110 points

    Hello Kevin,

    Is there any reason why the BQ76200 is being used? If they are using this with the BQ769x0 family, we recommend new designs to move to the BQ769x2 family instead, which incorporates integrated high-side FET drive.

    On their issue, I do not see why it would be failing. Using PCHG for Pre-discharge is completely okay. 

    Capturing waveforms during failure would be useful.

    Best Regards,

    Luis Hernandez Salomon

  • 0 in reply to Luis H. S.
    TI__Intellectual 1760 points

    Hi Luis,

    Customer use the BQ76930+BQ76200 solution for a long time. This is their previous program so it is difficult to change to BQ76942.

    I wonder know why not recommend the BQ76200. Is there any technical issue or yield problem? Thanks.

  • 0 in reply to Kevin Zhang
    TI__Mastermind 33110 points

    Hello Kevin,

    We are recommending it for new designs. If this is an older design, I understand. 

    The BQ769x2 is a next generation device that offers better performance and features over the BQ769x0, with the addition of having an integrated high-side FET drive. 

    Is this for a new project?

    Best Regards,

    Luis Hernandez Salomon