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Original question:

BQ25172: EVM is detecting continuously fault

BQ25172EVM: BQ25172 evaluation module is detecting continuously fault.

Saeed Danesh
Prodigy 20 points
Part Number: BQ25172EVM

Tool/software:

Hi,

I am experiencing an issue with the battery charger. At first, the charger worked well for about 15 charges. After that, it started detecting faults in the middle of charging and would stop. Now, it detects a fault right from the beginning and doesn't charge the batteries at all.

Battery:

1 Cell BK120AAHU Panasonic.

ISET: 120mA  

- R ISET 2.5K

TS: Fixed on 10K

VSET:47K

TMR: 16 h

- R TMR 8.2K

  • 0
    TI__Guru 69186 points

    Hello

    Do you have a schematic that you can share for review?

    Saeed Danesh said:
    Now, it detects a fault right from the beginning and doesn't charge the batteries at all.

    The Fault is a flashing STAT pin at 1Hz rate?

    What is battery voltage during this time?

    How many units are showing this behavior?