BQ24125: BQ24125 Battery charging issue

AVANEESH KUMAR TRIPATHI

Prodigy 20 points

Part Number: BQ24125

3S (12.6V) Li ion battery charger design with following specs and Component values

Vin =16V

RSNS=0.1R

R(ISET1)=9K75

R(ISET2)=20K

I am not using NTC so the TS PIN voltage divider resistors are 10K,10K Respectively

PG LED =ON(GLOWING)

STAT1 LED= Constant upto Battery charger till12v44 and then start Blinking continuosly

STAT2 LED= OFF all the time

I want to charge my Battery upto12V6 and want my STAT2 LED = ON(GLOW)

STAT2 LED= 0FF

Please suggest me the problem why It's not charging after 12v44

over 2 years ago

0 Michael Emanuel35 over 2 years ago

TI__Mastermind 35475 points

Hello,

Resolving via original thread,

Thanks,

Mike Emanuel

0 AVANEESH KUMAR TRIPATHI over 2 years ago in reply to Michael Emanuel35

Prodigy 20 points

Please check the attached schematic and try to resolve the issue and suggest me what should I do?

TI_CHARGER.pdf

0 Kedar Manishankar over 2 years ago in reply to AVANEESH KUMAR TRIPATHI

TI__Mastermind 24075 points

Hi,

Is this issue already resolved in another thread?

0 AVANEESH KUMAR TRIPATHI over 2 years ago in reply to Kedar Manishankar

Prodigy 20 points

No , I am still waiting for your help.

By changing RISET1 =10K and RISET2=20K the battery is chargied upto 12V6 but after that the STAT 1 LED =OFF (Not Glowing)and STAT2 LED =OFF(Not Glowing)

What Changes should I do make the status charged

0 Kedar Manishankar over 2 years ago in reply to AVANEESH KUMAR TRIPATHI

TI__Mastermind 24075 points

in your original configuration, can you take a waveform of switching node, VBAT, IBAT, STAT1?

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

Power management

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BQ24125: BQ24125 Battery charging issue