BQ27425-G2A: Configuration Register of current Threshold

Jing Ji

Intellectual 2655 points

Part Number: BQ27425-G2A

Hi all

when I write the charge current threshold, do I need some calculate like below?

this picture is from bq27421 technical reference. But I don't see it from bq26425?

over 8 years ago

0 Kang Kang over 8 years ago

TI__Mastermind 24870 points

The units are in terms of 0.1 hour rate. This means if you would like to set the discharge current threshold to 100 mA for a 2000 mAh battery, that means the C-rate is C/20. Which means you will need to write 200 to the Discharge current threshold. The calculation is done as 200 *0.1 = 20. Capacity / 20.

0 Jing Ji over 8 years ago in reply to Kang Kang

TI__Intellectual 2655 points

Thanks kang kang

for all kinds of gauge, the current threshold should calculate using C/I*0.1? like bq27421 and bq27425 both should calculate like C/I*0.1?

0 Kang Kang over 8 years ago in reply to Jing Ji

TI__Mastermind 24870 points

Yes

Power management

Power management forum

BQ27425-G2A: Configuration Register of current Threshold