Datasheet

-
EV2300
SMBD
SMBC
VSS
SMBD
SMBC
VSS
J1
-
LOAD / CHARGER
PACK+ SYS PRES PAC
K
–
+
75.0 mm
SMBD
SMBC
PWR084 Rev. B
VSS
12.0 mm
PACK +
RT1
GND
COMMONLED2LED4
HEATER
CNTRL
1P
PACK –CE
PRES
SYS
LED1LED3LED5
FUSE
RT2
4P
3P
2P
1N
TB7
TB1
TB5
TB6
2.5V
www.ti.com Operation
7.1 Connecting bq20z655/bq29412 and bq34z651/bq29412 Circuit Module to the Battery
Pack
Figure 7 shows how to connect the bq20z655/bq29412 and bq34z651/bq29412 circuit module to the cells
and system load/charger.
The cells must be connected in the following order:
1. 4-Cell Pack: 1N (BAT–), 1P, 2P, 3P, and 4P (see Section 2.1 for definitions).
2. 3-Cell Pack: 1N (BAT–), 1P, 2P, and then connect 4P and 3P together.
3. 2-Cell Pack: 1N (BAT–), 1P, and then connect 4P, 3P, and 2P together
To start charge or discharge test, connect PRES pin to PACK– pin to set SYS PRES state. To test sleep
mode, disconnect the SYS PRES pin.
Figure 7. bq20z655 and bq34z651 Circuit Module Connection to Cells and System Load/Charger
7.2 PC Interface Connection
The following steps configure the hardware for interface to the PC:
1. Connect the bq20z655-based and bq34z651-based smart battery to the EV2300 or EV2400 using wire
leads as shown in Table 5.
Table 5. Circuit Module to EV2300 or EV2400 Connections
bq20z655-Based and bq34z651-Based Battery EV2300 or EV2400
SMBD SMBD
SMBC SMBC
VSS GND
2. Connect the PC USB cable to the EV2300 or EV2400 and the PC USB port.
The bq20z655EVM and bq34z651EVM is now set up for operation.
8 Operation
This section details the operation of the bq20z655 and bq34z651 EVSW software.
9
SLUU697– November 2011 bq20z655EVM and bq34z651EVM SBS 1.1 Impedance Track
Technology-Enabled Evaluation Module
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