BQ27620-G1 Datasheet, PDF (33/45 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge

bq27620-G1
www.ti.com
SLUSAE3 – OCTOBER 2012
Table 5-7. SOC_INT Pulse Condition and Width
Enable Condition
SOC_Delta
Point
SOC_Delta ≠ 0
SOC1 Set Always
SOC1 Clear Always
SysDown Set Always
SysDown
Clear
Always
State
Change
SOC_Delta ≠ 0
Battery
Removal
INT_BREM bit is set in
OpConfig AND BIE bit is
set
OCV
Command
After Initialization
OCV
Command
INT_FOCV bit is set in
OpConfig
Data Flash After Initialization AND
Write
DFWrIndWaitTime ≠ 0
OTC or OTD
Flags
Always
Pulse Width
1 ms
1 ms
1 ms
1 ms
1 ms
1 ms
Comment
During charge, when the SOC is greater than (>) the points, 100% - n
× SOC_Delta and 100%;
During discharge, when the SOC reaches (≤) the points 100% - n ×
SOC_Delta and 0%;
where n is an integer starting from 0 to the number generating SOC no
less than 0%
When RSOC reached the SOC1 Set or Clear threshold set in the Data
Flash and BL_INT bit in Operation Configuration B is set.
When the Battery Voltage reached the SysDown Set or Clear threshold
set in the Data Flash
When there is a state change including charging, discharging and
relaxation. This function is disabled when SOC_Delta is set to 0.
1 ms
This function is disabled when BIE is cleared.
About 165ms. Same
as the OCV
command execution
time period
SOC_INT pulses for the OCV command after the initialization.
About 165ms. Same
as the OCV
command execution
time period
This command is to generate the SOC_INT pulse during the
initialization.
Programmmable
pulse width flash (see
comment)
SOC_INT is used to indicate the data flash update. The gauge will wait
DFWrIndWaitTime times 5μs after the SOC_INT signal to start the
data flash update. This function is disabled if DFWrIndWaitTime is set
to 0.
1 ms
Upon first assertion of Flags[OTC] or Flags[OTD] over temperature
conditions.
Copyright © 2012, Texas Instruments Incorporated
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FUNCTIONAL DESCRIPTION
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