BQ25703A: DPM not working when using ADC continuous update

JAP

Part Number: BQ25703A

Is there a some kind of connection between DPM and running ADC in continuous update -mode? I'm working with a design where DPM works just fine with one shot mode but not with continuous update. If continuous update is used, DPM is not reacting even though input voltage drops below set value(0B/0Ah).

Rgds,

Juha

over 6 years ago

0 Shishuo Zhao over 6 years ago

TI__Expert 3320 points

Hi Juha:

You are right, we are using one integrated ADC, therefore if it is occupied other channel signal then DPM is not able to sense the voltage therefore it is not effective anymore.

Regards

Shishuo

0 JAP over 6 years ago in reply to Shishuo Zhao

TI__Intellectual 2410 points

Thanks.

Is there any other features in 25703A which are affected by ADC continuous mode?

0 Shishuo Zhao over 6 years ago in reply to JAP

TI__Expert 3320 points

Hi Juha:

There is no more impact. By the way, for your reference the VINDPM bug only exist when you reconnect AC adaptor, if the AC adaptor is not re-plugged during continues ADCs, then the issue will exist.

Regards

Shishuo

Power management

Power management forum

BQ25703A: DPM not working when using ADC continuous update