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BQ25798: Charging when supplying part of the system from directly battery

Egemen Aksoy
Intellectual 895 points
Part Number: BQ25798

Tool/software:

Hello,

In our project we are using BQ25798 for charging 1s5p li-ion pack.

For our system we need more than 5A current in some circumstances when charging the li-ion battery.

So can I use some system loads directly from the battery not from the Vsys, does this effects charging?

Is it sufficient to do that?

Best regards.

  • 0
    TI__Guru**** 165886 points

    Hi Egmen,

    Yes, you can tie system load directly to the battery.  The converter will provide up to the charge current system to BAT and the battery will discharge the remaining current.  The charger will not be able to distinguish load current at BAT from charge current so the charger may not accurately terminate.

    Regards,

    Jeff