bq24616 charge problem

winningbear

Prodigy 190 points

Other Parts Discussed in Thread: BQ24616EVM

Now I am texting the bq24616EVM refer to SLUU396A,but the BAT text point has no current output.

the power supply #1 is 24v.

load #1 I use 10Ω resister.

load #2 I use 6 cells batteries( the total voltage is 19.6V ).

what is wrong?

over 8 years ago

0 David Wiest Jr over 8 years ago

TI__Genius 11480 points

Hi Winningbear,

The EVM was set up with the TS pin voltage divider expecting the thermistor from the battery. Without this, the charger will automatically go to TS fault. You can force 2V on the TS pin with a power supply to make the device work (or change the resistor divider).

0 winningbear over 8 years ago in reply to David Wiest Jr

Prodigy 190 points

Thank you for your reply David,I hav connected VREF(3.3V) pin to the TS pin ,will the fault still exist?

0 David Wiest Jr over 8 years ago in reply to winningbear

TI__Genius 11480 points

Unfortunately, it will. If you look at the hot/cold threshold, a "low" voltage on TS will be considered hot and a "high" voltage will be considered a cold fault. 2V happens to be the "sweet spot" right in the middle where the charger will function

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bq24616 charge problem