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what is different of bq27510 & bq27426?

LewisC
Intellectual 490 points
Other Parts Discussed in Thread: BQ27510, BQ27426

Hi!

I am looking for system side fuel gauge IC for Li-ply battery.

what is different of bq27510 & bq27426 on battery monitor?

What is adv. & disadv. of higher side & lower side current sense?

In website there have many parts for fuel gauge func.

Some parts are fully matched(in table).

Please share your comment to me.

Thanks

Lewis

  • 0
    TI__Guru* 76230 points

    Hi Lewis

    The bq27510 is a fully configurable flash based gauge. This means that you can choose a chem id of your cell or a close matching one from our data base and program it on the gauge. You can configure multiple data flash parameters to suit your application and in the event of a POR, the data in the data flash remains. For the ROm based gauge, namely the bq27426, you will need a non-volatile memory to store the learned capacity and resistance tables of the cell. Also, it comes pre-coded with 3 default chem -ids which you must chose one which closely matches your cell. It has RAM parameters which are configurable as well for your application, however if there is a POR, all the parameters configured returns to default and you loose all learned values hence the need for NVM.  There really isn't any significant benefits  of a high side current sense over the low side and vice-versa.

    Let me know if you have further questns

    thanks

    Onyx