BQ76952: BQ76952: Non-Zero Current Reading (approx. 15mA) with No Load

Tool/software:

Hi,

I am using the BQ76952 in my BMS design with a $0.5\text{ m}\Omega$ current sense shunt and the recommended $100\Omega$ series resistors / $100\text{ nF}$ differential filter capacitor on the SRP/SRN pins.

I am observing a consistent current reading of approximately 15mA from the BQ76952's AFE, when the system is not connected to any external load.

Could you please provide insights into potential reasons for this non-zero current reading?

• Is a small quiescent current reading (e.g., 15mA) considered normal or expected behavior for the BQ76952's internal current sense offset or noise floor?
• What are the common causes for such an offset, and how can I diagnose/mitigate it? (e.g., board leakage, calibration, internal offsets, ADC noise)