BQ76PL455EVM: Battery Management - Monitors, Protectors, Authentication and ID Forum

Abhimanyu Gupta56

Part Number: BQ76PL455EVM

Hi,

My BQ76PL455EVM was working just fine until yesterday, but now its not waking up, the power led is not lighting and with the GUI I'm getting "Unable to open com Port" message.

I have checked with the FTDI settings but it hasn't helped.

The test point voltages are:

VIO = 5.03V

VDIG = 0V

V5VAO = 4.73V

TX = 4.95V

RX = 5V

TOP = 32.7V

WAKEUP : 0.144V

over 7 years ago

0 Roger Hwang over 7 years ago

TI__Genius 10785 points

Yes, device is not active.
V5VAO should be 5.3V range. VDIG is another good way to indicate.
Just double check that COM MODE SELECT is on single side.

Do you have another IC you can replace.

0 Abhimanyu Gupta56 over 7 years ago in reply to Roger Hwang

Prodigy 20 points

Thanks for the help, the IC was damaged. The board is working fine after replacing the IC.

0 Roger Hwang over 7 years ago in reply to Abhimanyu Gupta56

TI__Genius 10785 points

Thanks for the update.....

Power management

Power management forum

BQ76PL455EVM: Battery Management - Monitors, Protectors, Authentication and ID Forum