BQ27531-G1_16 Datasheet, PDF (27/34 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge

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11.2 Layout Example
BATTERY PACK
CONNECTOR
PACK+
Use copper
pours for battery
power path to
minimize IR
losses
Kelvin connect the
BAT sense line right
at positive terminal to
battery pack
THERM
BI/TOUT
TS
BSDA
SDA
BSCL
SCL
bq27531-G1
SLUSBE7C – MARCH 2013 – REVISED JANUARY 2016
Battery power
connection to
system
SCL
SDA
To system host
processor
BSDA
To charger slave
BSCL
C1
C2
C3
INT
PACK –
Via connects to Power Ground
10 mΩ 1%
Kelvin connect SRP
and SRN
connections right at
Rsense terminals
Figure 17. Layout Schematic
Ground return to
system
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