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bq27441 Data Memory Parameter Descriptions
6.4.2.1.8 Simulation ResRelax Time (ResRelax Time)
Subclass
Subclass
Offset
Type
Name
Value
Unit
ID
Min
Max
Default
IT Cfg
80
50
U2
ResRelax Time
0
65535
500
s
This value is used for Impedance Track™ transient modeling of effective resistance. The resistance
increases from zero to the final value determined by the Ra table as defined by the exponent with time
constant
Res Relax Time
during discharge simulation. Default value has been optimized for typical cell
behavior.
6.4.2.1.9 User-Defined Rate-Current
Subclass
Subclass
Offset
Type
Name
Value
Unit
ID
Min
Max
Default
IT Cfg
80
52
I2
User Rate-mA
–32768
0
0
mA
This is the discharge rate used for Impedance Track™ simulation of voltage profile to determine discharge
capacity. It is only used when
Load Mode
= 0 (constant-current) and
Load Select
= 6 (user-defined rate).
User Rate-mA
is only used if Load Select is set to 6 and
Load Mode
= 0. If these criteria are met, then
the current stored in this register is used for the
RemainingCapacity()
computation in the Impedance
Track™ algorithm. This is the only function that uses this register.
6.4.2.1.10 User-Defined Rate-Power
Subclass
Subclass
Offset
Type
Name
Value
Unit
ID
Min
Max
Default
IT Cfg
80
54
I2
User Rate-mW
–32768
0
0
mW
This is the discharge rate used for Impedance Track™ simulation of voltage profile to determine discharge
capacity. It is only used when
Load Mode
= 1 (constant-power) and
Load Select
= 6 (user-defined rate).
User Rate-mW
is only used if Load Select is set to 6 and
Load Mode
= 1. If these criteria are met, then
the power stored in this register is used for the
RemainingCapacity()
computation in the Impedance
Track™ algorithm. This is the only function that uses this register.
6.4.2.1.11 Maximum Simulation Rate, Minimum Simulation Rate
Subclass
Subclass
Offset
Type
Name
Value
Unit
ID
Min
Max
Default
IT Cfg
80
61
U1
Max Sim Rate
0
255
1
Hr rate
62
U1
Min Sim Rate
0
255
20
Hr rate
Maximum and minimum limits for current used in simulation runs. The parameters are functions of
DesignCapacity()
(that is, C /
Max Sim Rate
or C /
Min Sim Rate
).
39
SLUUAC9A – December 2013 – Revised May 2015
Data Memory
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