BQ24616: Did BQ24616 charger IC protects reverse polarity of battery

sivasuryan.R

Part Number: BQ24616

Hi,

Is there any reverse protection circuitry inside the BQ24616 Charger IC when the battery is connected in wrong polarity?

Will it damage the charger IC when we connected the battery with reverse terminals?

Thanks and regards,

R.Sivasuryan

over 8 years ago

0 Ann_Lien over 8 years ago

TI__Genius 14430 points

Hi Sivasuryan.R,

When battery reverse, we cannot control the reverse current. It may damage output component like MOSFET. For charger, bq24616 cannot support negative voltage. So if negative voltage is at SRN, SRP...etc., pin will be damaged.

You can refer to TI document - Reverse Current/Battery Protection Circuits SLVA139

/cfs-file/__key/communityserver-discussions-components-files/196/7587.slva139.pdf

You can use one simple diode or MOSFET to prevent reverse battery.

Thanks,

Ann Lien

Power management

Power management forum

BQ24616: Did BQ24616 charger IC protects reverse polarity of battery