BQ40Z50-R2: Discharge can't be enabled

Steel Fang

Part Number: BQ40Z50-R2

Tool/software:

Dear TI experts:

the pack is 4S1P with BQ40Z50-R2 IC, the voltage is normal, but the dischage funcition can't be enabled, i press the "DSG_FET_TOGGLE" button on battery management studio software, but no effect.

can you advise the possible reasons for this? below is the picture.

over 1 year ago

0 Adrian over 1 year ago

TI__Mastermind 37761 points

Hello Steel,

Can you share a picture of the entire register view. There must be no protections tripped to be able to turn on both the chg and dsg fets.

Regards,

Nick Richards

0 Steel Fang over 1 year ago in reply to Adrian

Intellectual 290 points

Hi Nick,

The register view is below, i saw some proctions are tripped, can you tell me how to remove/eliminate the protections?

0 Adrian over 1 year ago in reply to Steel Fang

TI__Mastermind 37761 points

Hello Steel,

Can you share the gg file and a log file so I can see the value of each register currently. There are 3 protections tripped right now. CUV (cell under voltage), SOT (cell overtemperature) and ASCDL (short circuit). I will need to see the current settings to see what needs to be changed to clear the protection flags.

Regards,

Nick Richards

Power management

Power management forum

BQ40Z50-R2: Discharge can't be enabled