Texas Instruments bq78350-R1 Technical Reference

= - +
TS x
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TSx offset TEMP TSx TSx offset
Calibration www.ti.com
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SLUUBD3D–September 2015–Revised September 2018
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12.2.7 Current Calibration Data Flash
Class Subclass Name Format
Length in
Bytes
Min Max Default Unit
Calibration Current CC Gain Float 4 1.00E–001 9.00E+000 8.4381 mΩ
Calibration Current Capacity Gain Float 4 2.98E+004 2.69E+07 2516761.36 —
Calibration Current Offset CC Offset Integer 2 –32768 32767 0 —
Calibration Current Offset
Coulomb Counter
Offset Samples
Unsigned
Integer
2 0 65535 64 —
Calibration
Current
Deadband
Deadband
Unsigned
Integer
1 0 255 3 mA
Calibration
Current
Deadband
Coulomb Counter
Deadband
Unsigned
Integer
1 0 255 38 264 nV
12.2.8 Temperature Calibration
12.2.8.1 TS1–TS2–TS3 Calibration
1. Apply a known temperature in 0.1°C, and ensure that temperature TEMP
TSx
is applied to the thermistor
connected to the TSx pin. "TSx" refers to TS1, TS2, or TS3, whichever is applicable.
2. Send 0xF082 to ManufacturerAccess() to enable factory calibrated Temperature output on
ManufacturerData().
3. Poll ManufacturerData() until ZZ increments by 2 before reading data.
4. Read the factory calibrated conversion readings of Temperature from ManufacturerData():
• FCAL
TS1
= HHhh of ManufacturerData()
• FCAL
TS2
= IIii of ManufacturerData()
• FCAL
TS3
= JJjj of ManufacturerData()
5. Read the TSx offset
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from External × Temp Offset, where × is 1, 2 , or 3.
6. Re-check the temperature reading. If the reading is not accurate, repeat the steps.
7. Calculate the temperature offset:
where × is 1, 2, or 3.
8. Write the new External × Temp Offset (where × is 1, 2, or 3) value to data flash.
9. Re-check the temperature reading. If the reading is not accurate, repeat the steps.
12.2.9 Temperature Calibration Data Flash
Class Subclass Name Type
Length in
Bytes
Min Max Default Unit
Calibration Temperature
External 1 Temp
Offset
Integer 1 –128 127 0 0.1 °C
Calibration Temperature
External 2 Temp
Offset
Integer 1 –128 127 0 0.1 °C
Calibration Temperature
External 3 Temp
Offset
Integer 1 –128 127 0 0.1 °C
Calibration Temperature
Gauge Internal
Temp Offset
Integer 1 –128 127 0 0.1 °C

Texas Instruments bq78350-R1 Specifications

General

Brand	Texas Instruments
Model	bq78350-R1
Category	Controller
Language	English