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Regarding Bq24170

pushpa v g
Prodigy 130 points
Other Parts Discussed in Thread: BQ24170

Hi all,

I am using Bq24170 for charging 2 cell battery. ACFET and RBFET are conducting, system load output is coming. Vref LDO output is also coming 3.3V, not getting REGN LDO output. Nothing is there on SW pin also,if battery is connected it just shows the battery voltage and charging is not taking place. Please do help me out.

 

  • 0
    TI__Mastermind 36110 points

    Are you testing the bq24170 on a custom PWB or on the bq24170 EVM?  If you are testing on your own PWB, you will want to check the solder connections and perform continunity checks to ensure the bq24170 REGN pin is properly soldered to the PWB.  If you confirm all connections are properly made and the problem still exists, please provide a schematic and table showing the voltage you measure on every pin of the IC.   You should also consider replacing the IC, which could have been damaged by hand soldering.  While the IC is disconnected from the PWB, examing the land pattern to ensure it is tinned properly and has good solder coverage. Also check to make sure the PWB etch connects to the pads properly.