BQ40Z50: Regarding the over discharge current protection

Takashi Anazawa

Part Number: BQ40Z50

Hi team,

Are there any guidelines for the threshold of over discharge current protection when using Intel DBPT? If you have, please provide it.

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

Unfortunately, as far as I know, we don't have such a document for that.

Andy.

0 Takashi Anazawa over 5 years ago in reply to Andy Liu (BMS)

TI__Prodigy 180 points

Thank you for your quick response. Is there any manual for setting the discharge over current value? or important point ?

0 Vos over 5 years ago in reply to Takashi Anazawa

TI__Genius 10370 points

Takashi,

Current threshold are system dependent. The official intel DBPT spec says a current rate of 2C for 10 seconds and 4C for 10mSec. Firmware OCD protection will not catch the 10mSec pulse. If your threshold is lower than 2C i would make sure your protection delay is longer then 10Sec.

Beyond that this is not something we can advise, because it depends on your batteries and PCB to know what it can handle.

Thanks,

Eric Vos

Power management

Power management forum

BQ40Z50: Regarding the over discharge current protection