SLUAA32A October 2020 – September 2021 BQ769142 , BQ76922 , BQ76942 , BQ76952
The coulomb counter ADC measures the differential voltage between the SRP and SRN pins to calculate the system current. The coulomb counter offset and current gain calibration steps are shown below. This value can simply be adjusted based on the sense resistor value in the system (CC Gain = 7.4768 / (Rsense in mOhm)). The steps below can be used if further calibration is required.