BQ27531-G1_16 Datasheet, PDF (23/34 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge

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bq27531-G1
SLUSBE7C – MARCH 2013 – REVISED JANUARY 2016
Typical Application (continued)
NAME
Charge T0
Charge T1
Charge T2
Charge T3
Charge T4
Charge Current T0
Charge Current T1
Charge Current T2
Charge Current T3
Charge Current T4
Charge Voltage T0
Charge Voltage T1
Charge Voltage T2
Charge Voltage T3
Charge Voltage T4
Chg Temp Hys
Chg Disabled
Regulation V
CC Gain
CC Delta
CC Offset
Board Offset
Pack V Offset
Table 5. Key Data Flash Parameters for Configuration (continued)
DEFAULT
0
10
45
50
60
50
100
100
100
0
262
262
259
256
0
5
4200
10
10
–1418
0
0
UNIT
°C
°C
°C
°C
°C
% Des Cap
% Des Cap
% Des Cap
% Des Cap
% Des Cap
16 mV
16 mV
16 mV
16 mV
16 mV
°C
mV
mΩ
mΩ
Counts
Counts
mV
RECOMMENDED SETTING
Sets the boundary between charging inhibit and charging with T0 parameters.
Sets the boundary between charging with T0 and T1 parameters.
Sets the boundary between charging with T1 and T2 parameters.
Sets the boundary between charging with T2 and T3 parameters.
Sets the boundary between charging with T3 and T4 parameters.
Sets the charge current parameter for T0.
Sets the charge current parameter for T1.
Sets the charge current parameter for T2.
Sets the charge current parameter for T3.
Sets the charge current parameter for T4.
Sets the charge voltage parameter for T0.
Sets the charge voltage parameter for T1.
Sets the charge voltage parameter for T2.
Sets the charge voltage parameter for T3.
Sets the charge voltage parameter for T4.
Adds temperature hysteresis for boundary crossings to avoid oscillation if
temperature is changing by a degree or so on a given boundary.
Sets the voltage threshold for voltage regulation to system when charge is
disabled. TI recommends programming to same value as Charging Voltage and
maximum charge voltage that is obtained from Charge Voltage Tn parameters.
Calibrate this parameter using TI-supplied evaluation software and calibration
procedure in the TRM. Determines conversion of coulomb counter measured
sense resistor voltage to current.
Calibrate this parameter using TI-supplied evaluation software and calibration
procedure in the TRM. Determines conversion of coulomb counter measured
sense resistor voltage to passed charge.
Calibrate this parameter using TI-supplied evaluation software and calibration
procedure in the TRM. Determines native offset of coulomb counter hardware
that must be removed from conversions.
Calibrate this parameter using TI-supplied evaluation software and calibration
procedure in the TRM. Determines native offset of the printed-circuit-board
parasitics that must be removed from conversions.
Calibrate this parameter using TI-supplied evaluation software and calibration
procedure in the TRM. Determines voltage offset between cell tab and ADC
input node to incorporate back into or remove from measurement, depending
on polarity.
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