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  • TI Thinks Resolved

BQ40Z60: Using BQ40Z60 with 1S2P in series

Prodigy 120 points

Replies: 5

Views: 91

Part Number: BQ40Z60

Hello,

I want to know if it's possible to use the BQ40Z60 with 1S2P li-po with protection circuit in a low-side configuration on each pack ?

Thanks for your answers.

  • Our answer is no.

    Andy

  • In reply to Andy Liu (BMS):

    Thanks Andy but why ?

    Can you help me to find a correct solution ?

    Best regards,

    Sébastien

  • In reply to Sebastien ANDRIEUX:

    What is your major purpose of having the protection circuit in the low-side? 

  • In reply to Andy Liu (BMS):

    No, but I have to use 2 separate battery li-po. Each battery has a PCM with low-side protection. I have to connect these 2 battery in series. I saw that cell balancing is not possible with this configuration but i don't understand why ?

  • In reply to Sebastien ANDRIEUX:

    Hello Sebastien,

    It is not possible in this configuration. The charge pumps on the device are designed to be high-side FET drivers.

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