DC Power Supply
+ -
Load
DC Power Supply
+ -
³EDWWHU\´
MCU
Voltage
Connect to
header or
terminal block,
as desired
MCU
Csys
Cload
Load
³EDWWHU\´
Supply or
Cell
Assembly
Connect to
header or
terminal block,
as desired
BMS Board
Csys
Rsense
Cload
+
-
Remove Ground
Shunt
Additional Evaluation Setups
Figure 3. Operation with a BMS
3.3
Connecting to a MCU
It may be desired to evaluate the board with control from an MCU, see
. The J7 header or J8
terminal block may be useful to connect signals depending on the MCU board and cabling used. The J6
shunt should be removed since the MCU board should provide the control signals. Generally, it is
expected that the J3 shunt would be installed, but provide an appropriate ground for the system.
Figure 4. Operation With a MCU
3.4
Troubleshooting
If the bq76200 does not appear to be operating, check the BATT+ and enable voltages. BATT+ must be in
the range of the board and the BAT test point in the range of the IC as shown in the data sheet. Check
that the board ground is appropriately connected to the system supply ground. With the CP_EN voltage
applied in the 3 to 12 V or other range indicated in the data sheet, measure the voltage of the VDDCP
(TP7) with respect to BAT (TP9) and confirm it is within the range shown in the data sheet. The
section is a good procedure to check the operation of the board.
8
bq76200 High Voltage Battery Pack Front-End Charge/Discharge High-Side
SLVU926 – July 2015
NFET Driver Evaluation Module
Copyright © 2015, Texas Instruments Incorporated