BQ35100: Accumulated Coulomb Changing over time with No load ON

Justin Koudonou

Part Number: BQ35100

I am using the BQ35100 in my design to monitor the voltage, current and accumulated coulomb. I am using 20mΩ sense resistor. I noticed that the accumulated coulomb for some fuel gauges has been changing drastically over time with no the load ON.

Is there a way that we can do some adjustment in the data memory to prevent this from happening?

Below is a screen capture of the data that I have recorded .

Thank you

Justin

over 5 years ago

0 Justin Koudonou over 5 years ago

Prodigy 90 points

Fuel Gauge Data.xlsx

0 Wyatt Keller over 5 years ago in reply to Justin Koudonou

TI__Guru** 105590 points

Hello Justin,

All the gauges are configured the same and only the 1 is having this issue?

Make sure calibration was performed on all the gauges and that you follow the same procedure to pull the data from the gauges.

Can you export the .gg file from the gauge with the error and a gauge without the error, if there are differences in calibration it may lead to incorrect measurements.

Sincerely,

Wyatt Keller

Power management

Power management forum

BQ35100: Accumulated Coulomb Changing over time with No load ON