EM1402EVM: EM1402EVM

user512135966

Part Number: EM1402EVM
Other Parts Discussed in Thread: BQ76PL455A

Hi,

I'm using the EM1402EVM together with LAUNCHXL-TMS57004 and I have some questions about the ACB. I attach two images of the GUI for more information.

In the GUI, when the ACB is enable and the energy exchange is in progress, the ACB affects the cell that needs to be balance(CELL 3) and the two cells that are next to the cell 3. Cell 2 and Cell 4. Why this happend? This always happend when the ACB is enable. I don't mean that it is a fault, I just want to know why this happens.

Thanks

over 4 years ago

0 user512135966 over 4 years ago

Intellectual 390 points

Other question.

The Analog/Digital Die Temperature only measure the temperature of the EVM or there is a way to measure temp of the cells? Using AUX channels?

0 Roger Hwang over 4 years ago in reply to user512135966

TI__Genius 10785 points

Hi User,

Analog/Digital l temp is not EVM temp. It's actual IC temp.

You have to use AUX to measure temp.

Check out the bq76pl455A reference schematic for your reference.

roger

0 user512135966 over 4 years ago in reply to Roger Hwang

Intellectual 390 points

and the first post?

0 user512135966 over 4 years ago

Intellectual 390 points

Can you help me with this?

0 Leslie Marquez over 4 years ago in reply to user512135966

TI__Genius 9301 points

Hello,

Could you please explain what your algorithm does for balancing? If you are using an example code by TI, can you please share which one (the link to it)?

When you observe the behavior described, is cell 3 being charged or discharged?

Best regards,

Leslie

0 user512135966 over 4 years ago in reply to Leslie Marquez

Intellectual 390 points

Hi,

The code is from TMS570BMS. Cell 3 is charging.

The problem is that the cell and cell 4 are affected by the ACB. Is it normal?

Occurs always when ACB is enable. Why does this happend?

Thanks

0 user512135966 over 4 years ago in reply to user512135966

Intellectual 390 points

Hi,

Can you give me an answer?

Thanks

0 Leslie Marquez over 4 years ago in reply to user512135966

TI__Genius 9301 points

Hello,

Please see the thread on the link below. To avoid inaccuracies in cell measurement, we recommend to turn off balancing first before taking cell measurements, and then resume balancing if needed.

https://e2e.ti.com/support/power-management/f/196/t/858520

Regards,

Leslie

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EM1402EVM: EM1402EVM