Texas Instruments bq78350-R1 Technical Reference

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51
SLUUBD3D–September 2015–Revised September 2018
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Charge Algorithm
Class Subclass Name Type Min Max Default
Fuel Gauging FD Set RSOC % Threshold U1 0% 100% 0%
Fuel Gauging FD Clear RSOC % Threshold U1 0% 100% 5%
Fuel Gauging FC Set RSOC % Threshold U1 0% 100% 100%
Fuel Gauging FC Clear RSOC % Threshold U1 0% 100% 95%
Fuel Gauging TD Set RSOC % Threshold U1 0% 100% 6%
Fuel Gauging TD Clear RSOC % Threshold U1 0% 100% 8%
Fuel Gauging TC Set RSOC % Threshold U1 0% 100% 100%
Fuel Gauging TC Clear RSOC % Threshold U1 0% 100% 95%
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 FET
Options[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 FET
Options[CHGFET] = 1
ChargingVoltage() = 0
ChargingCurrent() = 0
5.6 Charge Inhibit
The device can inhibit the start of charging at high and low temperatures to prevent damage of the cells.
This feature prevents the start of charging when the temperature is at the inhibit range; therefore, if the
device is already in the charging state when the temperature reaches the inhibit range, a FET action will
not take place even if FET Options[CHGIN] = 1.
Status Condition Action
Normal
BatteryStatus()[DSG] = 0
Charge Inhibit/Charge Suspend Low
Temp + Hysteresis Temp < Temperature()
< Charge Inhibit High Temp – Hysteresis
Temp
ChargingStatus()[IN] = 0
ChargingVoltage() = charging algorithm
ChargingCurrent() = charging algorithm
Trip
BatteryStatus()[DSG] = 0
Charge Inhibit/Suspend Low Temp >
Temperature() > Charge Inhibit Temp High
ChargingStatus()[IN] = 1
ChargingVoltage() = 0
ChargingCurrent() = 0
No charging is allowed if FET Options[CHGIN] = 1.
Class Subclass Name Type Min Max Default Unit
Charge Algorithm Temperature Ranges
Charge Inhibit/Suspend Low
Temp
I1 –127 128 0 °C
Charge Algorithm Temperature Ranges Pre-Charge Temp I1 –127 128 12 °C
Charge Algorithm Temperature Ranges Charge Inhibit High Temp I1 –127 128 45 °C
Charge Algorithm Temperature Ranges Hysteresis Temp I1 –127 128 3 °C

Texas Instruments bq78350-R1 Specifications

General

Brand	Texas Instruments
Model	bq78350-R1
Category	Controller
Language	English