BQ76PL455EVM: BQ76PL455EVM

X Chen

Part Number: BQ76PL455EVM

Hello TI support,

I would like to know if the board can measure the current of high current bus. If yes, which pin can support this function and how to connect the circut?

Thanks in advance!

over 3 years ago

0 Taylor Vogt over 3 years ago

TI__Genius 17370 points

Xiaozhe,

You mean like a current shunt measurement? This device cannot do directly but you can look into bq79656 device that has two dedicated current sense pins for shunt measurement. Otherwise you can connect an INA current sensor device to interface with mcu separately.

Regards,

Taylor

0 X Chen over 3 years ago in reply to Taylor Vogt

Prodigy 50 points

Hello Vogt,

thanks for your feedback.

Could you please let me know the difference between bq79656 and bq79614? Are SOC and SOH further assisted for bq79656EVM by an integrated current sense ADC?

Thanls in advance!

0 Taylor Vogt over 3 years ago in reply to X Chen

TI__Genius 17370 points

Hi Xiaozhe,

See this faq for part comparison: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1165815/faq-bq796xx-automotive-grade-battery-monitors-family

Yes with CS ADC integrated you can synchronize your voltage/current measurements better for more accurate SOC/SOH, but those estimations algorithms are still done on MCU host side as our device just provides data.

Regards,

Taylor

0 X Chen over 3 years ago in reply to Taylor Vogt

Prodigy 50 points

Hi Taylor,

thanks again.

I would like to know under NDA. Can you provide us some source code for SOC/SOH?

Best regards,

0 Taylor Vogt over 3 years ago in reply to X Chen

TI__Genius 17370 points

Xioazhe,

We do not have source code for this, there are some general resources for implementing an algorithm online but we can only provide information on how to collect the data. If you do not yet have our basic example code, you can go to this thread for requesting access:

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1165765/faq-where-is-mysecuresw-link-to-get-access-to-gui-example-code-applications-reports

Regards,

Taylor

Power management

Power management forum

BQ76PL455EVM: BQ76PL455EVM