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BQ40Z50-R1: bq40z50-R1 / Order of connecting cells

S.Satoshi
Guru 21675 points
Part Number: BQ40Z50-R1

Hi,

I believe that the order of connecting cells should be from lower cells, 1N -> 1P -> 2P... but then is there a possibility of damage or unexpected firmware operation if we don't follow this order?

Best Regards,

Satoshi / Japan Disty

  • 0
    TI__Mastermind 34705 points

    Hi Satoshi-san,

    That is the recommended order, but if it isn't followed it should cause any damage to the bq40z50-R1 unless the voltage spec for pins are violated. The gauge is shutdown until after the cells are connected and the gauge is awaken by applying a charger or voltage >2.45V across PACK+ and PACK-. When the gauge is in shutdown the FW isn't running.

    What battery pack configuration are you planning to use bq40z50-R1? 2S, 3S or 4S?

  • 0 in reply to Damian Lewis
    Guru 21675 points

    Hi Damian,

    Thank you for your comment. Now my customer is plan to use bq40z50-R1 and so the cell configuration has not been fixed yet. Anyway your comment will be helpful for them.

    Best Regards,

    Satoshi