The bq78350-R1 TRD, Section 5.5 Charge Disable, lists the safety conditions that can disable charging. This list appears to be incomplete, because the TRD states that the following safety conditions will also set [XCHG] = 1.
CUV Cell Undervoltage Protection
OCD Overcurrent in Discharge Protection
AOLD Overload in Discharge Protection
ACSD Short Circuit in Discharge Protection
OVRD AFE ALERT OVRD Protection
OTD Overtemperature in Discharge Protection
UTD Undertemperature in Charge Protection
Is the table in Section 5.5 incorrect?
5.5 Charge Disable
The device can disable charging if certain safety conditions are detected setting the OperationStatus()[XCHG] = 1.
|
Status |
Condition |
Action |
|
Normal |
ALL PFStatus() = 0 AND SafetyStatus()[COV] = 0 AND SafetyStatus()[OTC] = 0 AND SafetyStatus()[UTC] = 0 AND SafetyStatus()[OCC] = 0 AND SafetyStatus()[CTO] = 0 AND SafetyStatus()[PTO] = 0 AND GaugingStatus()[TCA] = 0 if Charging Configuration[CHGFET] = 1 |
ChargingVoltage() = Charging Algorithm ChargingCurrent() = Charging Algorithm |
|
Trip |
ANY PFStatus() = 1 OR SafetyStatus()[COV] = 1 OR SafetyStatus()[OTC] = 1 OR SafetyStatus()[UTC] = 1 OR SafetyStatus()[OCC] = 1 OR SafetyStatus()[CTO] = 1 OR SafetyStatus()[PTO] = 1 OR GaugingStatus()[TCA] = 1 if Charging Configuration[CHGFET] = 1 |
ChargingVoltage() = 0 ChargingCurrent() = 0 |
Thanks for helping!
Sheldon