ZHCSP94A November 2021 – February 2022 BQ27Z746
PRODUCTION DATA
The short-circuit current in discharge (SCD) function detects catastrophic current conditions in the discharge direction. The short-circuit in discharge thresholds and delay times are configurable through the firmware register. The thresholds and timing can be fine-tuned even further based on a sense resistor with lower resistance or wider tolerance with calibration. The detection circuit also incorporates a delay before disabling the CHG and DSG FETs. When an SCD event occurs, the Safety Status flag bit is set to 1 and is latched until it is cleared and the fault condition is removed.