BQ24610: Power management forum

Niveditha K

Part Number: BQ24610

HI, we are currently have a product that is BQ24610RGER battery charger ,HIDRV & LODRV was not switched and also STAT1,STAT2 pin was always high .

over 2 years ago

0 Michael Emanuel35 over 2 years ago

TI__Mastermind 40305 points

Hello,

Can you provide any more information? For example, a schematic? Can you provide waveforms of the input voltage, PH voltage, SRN voltage, and charge current? What is the TS voltage?

Please provide more information for debug.

Regards,

Mike Emanuel

0 Niveditha K over 2 years ago in reply to Michael Emanuel35

Prodigy 20 points

schematic

input voltage wave form

PH VOLTAGE -10.92V

SRN VOLTAGE -10.9V

TS VOLTAGE -3.2

We set as charge current as 2Amps

0 Michael Emanuel35 over 2 years ago in reply to Niveditha K

TI__Mastermind 40305 points

Hello,

The problem here is you are in charge suspend mode because the TS pin is incorrectly biased. The TS pin needs to be between VHTF and VLTF to initiate charge. Here your TS voltage is 97% of VREF, while VHTF and VLTF are 37% and 73.5% of VREF, respectively. The TS resistors are correct, providing you have a 103AT Thermistor in parallel with the lower resistor.

Regards,

Mike Emanuel

0 Niveditha K over 2 years ago in reply to Michael Emanuel35

Prodigy 20 points

behalf of your suggestion we got an output (TS PIN) of 1.3 Volts, but the battery didn't get charged.

0 Michael Emanuel35 over 2 years ago in reply to Niveditha K

TI__Mastermind 40305 points

Hello,

Several things can make STAT1 and STAT2 go high:

TS wrong voltage
Safety timer fault
Input overvoltage
Sleep mode
Battery absent

Have you eliminated these other faults?

Can you please provide the original waveform requested (all channels please)? They are input voltage, PH voltage, SRN voltage, and charge current.

Regards,

Mike Emanuel