BQ78350-R1: Calibration Problem

Anton Kanyshev

Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQSTUDIO

Greetings

So, I'm trying to calibrate my BQ78350-R1 using Battery Managment Studio, but i've confronted problem. I'm following BQ78350-R1 Technical Refference, but I'm stuck at step 4 (page 77). Where can I find information containing in ManufacturerData() and how can I properly read them in software?

Thanks for helping

Anton Kanyshev

over 8 years ago

0 ThomasCosby over 8 years ago

TI__Guru 73830 points

The ManufacturerData() can be read using a block read from 23. Here is the transaction log to enable CAL mode, setupF081 and read the data. I have four cells on my setup.

0 Anton Kanyshev over 8 years ago in reply to ThomasCosby

Prodigy 210 points

Thanks a lot, Thomas. You really helped me a lot.

But eventually my problems still doesn't stop to showing up. Now I'm able to completely fine read ManufacturerData(), thank you again, but BQ78350-R1 keep telling me, that every Cell Voltage are zeros. In fact - they are not.
What can cause such problem and how to solve it?

I am truly grateful for your advice and hope my English is understandable

0 ThomasCosby over 8 years ago in reply to Anton Kanyshev

TI__Guru 73830 points

Do the cell voltages report properly on the bqStudio Registers screen? If they do, then there must be a problem with using the ManufacturerData() sequence. Can you provide a screenshot like I sent?

0 Anton Kanyshev over 8 years ago in reply to ThomasCosby

Prodigy 210 points

Apparently they doesn't. I attached sceenshots showing my situation and used circuit. Also, as you can see, the temperature is completely insane.

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BQ78350-R1: Calibration Problem