BQ24105-Q1: BQ24105-Q1

Dinesh Gread2

Intellectual 360 points

Part Number: BQ24105-Q1

Tool/software:

Is there any protection for OCP in the IC for short circuit that occur at the battery output?

2 months ago

0 Jeff F 2 months ago

TI__Guru**** 170196 points

Hi Dinesh,

Yes. If its a soft short and V(BAT) > VSHORT, cycle by cycle current limit turns off the internal power FET if the inductor current exceeds the current. If V(BAT) pin falls below VSHORT, the output current is clamped to ISHORT.

Regards,

Jeff

0 Dinesh Gread2 2 months ago in reply to Jeff F

Intellectual 360 points

Could you please explain in detail , "If V(BAT) pin falls below VSHORT, the output current is clamped to ISHORT."?

0 Jeff F 2 months ago in reply to Dinesh Gread2

TI__Guru**** 170196 points

Hi Dinesh,

After initial power up, if the battery voltage drops below VSHORT threshold, the charger thinks the battery is shorted. To prevent damage to itself, the charger limits the charge current to ISHORT, regardless of the charge current setting.

Regards,

Jeff

Power management

Power management forum

BQ24105-Q1: BQ24105-Q1