Is the DSG FET on during SLEEP mode with NR=1 ? (Using bq29312)

Nicolas TAUZIN

Prodigy 60 points

Other Parts Discussed in Thread: BQ20Z80, BQ29312

Hi,

I am using the bq20z80 and bq29312 for an project.

By reading documentations I did not found this information:

Is the Dicharge FET is turned off when the circuit going in sleep with NR=1 ?

Thanks,

over 13 years ago

0 Jackie Hui over 13 years ago

TI__Expert 3865 points

Yes, DSG FET is off in sleep mode with NR=1 or NR =0.

0 Nicolas TAUZIN over 13 years ago in reply to Jackie Hui

Prodigy 60 points

My customer would like a battery with low power consumption and dicharge feature still active.

Is there any solution to get a low power consumption (with the BQ29312 & BQ20z80) less than 60µA (Averaged) and voltage on the output ?

The aim will to allow a dicharge, and so a wake up, without using /PRES SLEEP pins.

0 Jackie Hui over 13 years ago in reply to Nicolas TAUZIN

TI__Expert 3865 points

Discharge is active at normal mode only. You can enable sleep, the gauge will wake up when current > wake current.

The current consumption is then switch between normal and sleep mode. The actual average current consumption will depend on the application.

Power management

Power management forum

Is the DSG FET on during SLEEP mode with NR=1 ? (Using bq29312)