BQ33100_15 Datasheet, PDF (23/67 Pages) Texas Instruments – Super Capacitor Manager

www.ti.com
bq33100
SLUS987B – JANUARY 2011 – REVISED DECEMBER 2015
8.3.8.3 Current Gain
Current Gain sets the mA current scale factor for the coulomb counter. Use calibration routines to set this value.
Table 6. Current Gain
SUBCLASS
ID
104
SUBCLASS
NAME
Data
OFFSET
0
NAME
Current Gain
FORMAT
Floating point
SIZE IN
BYTES
4
MIN
VALUE
1.0E-01
MAX
VALUE
4.0E+00
DEFAULT
VALUE
0.9419
UNIT
mΩ
8.3.8.4 CC Delta
CC Delta sets the mF capacitance scale factor for the coulomb counter. Use calibration routines to set this value.
SUBCLASS
ID
104
SUBCLASS
NAME
Data
OFFSET
4
NAME
CC Delta
Table 7. CC Delta
FORMAT
Floating point
SIZE IN
BYTES
4
MIN VALUE MAX VALUE
2.9826E+04 1.193046E+06
DEFAULT
VALUE
280932.825
UNIT
mΩ
8.3.8.5 Cap1 K-factor
This register value stores the ADC voltage translation factor for the top capacitor (Capacitor 1), which is
connected between the VC1 and VC2 pins. By default, this value is not used and the factory calibration are in
effect. This value overrides the factory calibration when the K-factor Override Flag is set to 0x9669 by the
software calibration process. The calibration routine sets this value, however the value can be manually modified
according to Equation 5:
New StackVoltageKfactor = Existing StackVoltageKfactor × Actual Applied Voltage / Reported Voltage
(5)
SUBCLASS
ID
SUBCLASS
NAME
OFFSET
104
Data
8
NAME
Cap1 K-
factor
Table 8. Cap1 K-factor
FORMAT
SIZE IN
BYTES
Integer
2
MIN
VALUE
0
MAX
VALUE
32767
DEFAULT
VALUE
20500
UNIT
8.3.8.6 Cap2 K-factor
This register value stores the ADC voltage translation factor for Capacitor 2, which is connected between the
VC2 and VC3 pins. By default, this value is not used and the factory calibration are in effect. This value overrides
the factory calibration when the K-factor Override Flag is set to 0x9669 by the software calibration process. The
calibration routine sets this value, however the value can be manually modified according to Equation 6:
New StackVoltageKfactor = Existing StackVoltageKfactor × Actual Applied Voltage / Reported Voltage
(6)
SUBCLASS
ID
SUBCLASS
NAME
OFFSET
104
Data
10
NAME
Cap2 K-
factor
Table 9. Cap2 K-factor
FORMAT
SIZE IN
BYTES
Integer
2
MIN
VALUE
0
MAX
VALUE
32767
DEFAULT
VALUE
20500
UNIT
8.3.8.7 Cap3 K-factor
This register value stores the ADC voltage translation factor for Capacitor 3, which is connected between the
VC3 and VC4 pins. By default, this value is not used and the factory calibration are in effect. This value overrides
the factory calibration when the K-factor Override Flag is set to 0x9669 by the software calibration process. The
calibration routine sets this value, however the value can be manually modified according to Equation 7:
New StackVoltageKfactor = Existing StackVoltageKfactor × Actual Applied Voltage / Reported Voltage
(7)
Copyright © 2011–2015, Texas Instruments Incorporated
Product Folder Links: bq33100
Submit Documentation Feedback
23