BQ27Z561-R2: Sudden Jump in RSOC During charging

Tool/software:

Hi,

I have created a golden image for my battery using the BQ27Z561 EVM, and it works correctly with the EVM. However, when I tested it with my custom board, I observed sudden jumps in battery percentage during charging. I suspect that I will encounter similar issues, such as sudden drops in battery percentage or RSCO, during discharge tests.

The battery I am using is LP353035 of 3.7V and of 400mAh capacity.

I am sharing the charging logs from both the EVM and my custom board for your analysis, along with the schematic capture of the fuel gauge section of my custom board and chem id report. I have used best matching chem id - 2003 as per report.

Your assistance in resolving this issue would be greatly appreciated.

Thanks,

Parth

charging_test_EVM.logcharging_custom baord.txtFinal_goldenImage_zip.zipGPCPackaged-report 2.zip