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BQ769142: Stacking BQ769142

Vasanth M S
Prodigy 20 points
Part Number: BQ769142

The BQ769142 IC has Stackable (built-in interface) as part of its feature, yet there is no mention on how to stack two ICs for higher cell count. It is not possible using this IC alone? Can I stack only be referring to this How to stack battery monitors for high-cell-count industrial applications - Power management - Technical articles - TI E2E support forums?

  • +1
    TI__Mastermind 27440 points

    Hello Vasanth,

    The BQ769142 does not have a built-in stackable interface, hence why additional circuitry is required in order to stack it. The IC alone does not support stacking. We are planning in releasing a reference design of a stacked device using the BQ769x2 family. But I have no estimated time of when this will be released, it is likely to release in the following months.

    The technical article you linked is the only source we have at the moment for stacking, you should be able to implement stacking that way. A couple of other documents that may be helpful to implement stacking is the Low-Side FETs with the BQ769x2 application report and, albeit for a different part, the TIDA-01093 reference design (for stacking the BQ769x0 family).

    These should serve as a good starting point, alongside the technical article you linked.

    If you require built-in stacking interface, our automotive-rated monitors provide this feature.

    Best Regards,

    Luis Hernandez Salomon