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Circuit Module Physical Layouts, Bill of Materials, and Schematic
3.3
bq27742 Circuit Module Performance Specification Summary
This section summarizes the performance specifications of the bq27742 circuit module.
Specification
Input voltage Pack+ to Pack–
Charge and discharge current
4
EVM Hardware and Software Setup
This section describes how to install the bq27742EVM PC software, and how to connect the different
components of the EVM.
4.1
System Requirements
The Battery Management Studio software requires Windows XP or later. Using later versions of Windows
operating system can have issues with the USB driver support. The EV2300 USB drivers have been
tested for Windows 98SE and Windows XP, but no assurance is made for problem-free operation with
specific system configurations. The EV2300 interface board is not officially supported for 64-bit versions of
Windows and typically does not work with Windows 7 or newer. The EV2400 interface board is the
recommended USB-I
for use of EV2400 interface board. The EV2400 interface board has built-in I
interface board does not. Jumpers J7 and J9 can be removed from the bq27742EVM if the EV2400
interface board is used.
4.2
Software Installation
Find the latest software version in the bq27742 tool folder on power.ti.com. Make a search by Part
Number for bq27742 to access the tool folder. Currently the most recent firmware version is bq27742-G1.
Use the following steps to install the bq27742 Battery Management Studio software:
1. Ensure that the EV2300 or EV2400 interface board is not connected to the personal computer (PC)
through the USB cable before starting this procedure.
2. Open the archive containing the installation package, and copy its contents into a temporary directory.
3. Open the software file that was downloaded from the TI Web site.
4. Follow the instructions on screen until completing the software installation.
5. Before starting the evaluation software, connect the EV2300 or EV2400 interface board to the
computer using the USB cable.
6. If the EV2300 interface board is connected, wait until system prompt New Hardware Found appears.
Choose Select Location Manually, and use the Browse button to point to subdirectory TIUSBWin2K-
XP-1.
7. Answer Continue to the warning that drivers are not certified with Microsoft
8. If the EV2300 interface board is connected, after the previous installation finishes, another system
prompt New Hardware Found appears. Repeat steps 1 through 5, but specify the directory as
TIUSBWin2K-XP-2.
9. Answer Continue to the warning that drivers are not certified with Microsoft. Driver installation is now
finished.
10. For the EV2400 interface board, the driver should be installed along with software installation.
5
Troubleshooting Unexpected Dialog Boxes
The user who is downloading the files must be logged in as the administrator. The driver is not signed, so
the administrator must allow installation of unsigned drivers in the operating system. If using Windows 7,
install the software with administrator privileges.
8
bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module
Table 3. Performance Specification Summary
2
C interface for Windows 7 and other 64-bit versions. No driver installation is required
Copyright © 2014, Texas Instruments Incorporated
Min
Typ
Max
2.7
3.6
4.35
0
1
2
2
C pullups while the EV2300
.
®
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Unit
V
A
SLUUAX8 – March 2014
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