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EVM Hardware and Software Setup
Specification
Input voltage Pack+ to Pack–
Charge and discharge current
4
EVM Hardware and Software Setup
This section describes how to install the bq27520EVM PC software and how to connect the different
components of the EVM.
4.1
System Requirements
The bq27520EVSW software requires 32-bit versions of Windows 2000 or Windows XP. Drivers for
Windows 98SE are provided, but Microsoft™ no longer supports Windows 98; therefore, Windows 98 can
have issues with USB driver support. The EV2300 USB drivers have been tested for Windows 98SE, but
no assurance is made for problem-free operation with specific system configurations.
4.2
Software Installation
Find the latest software version in the bq27520 tool folder on power.ti.com. Make a search by Part
Number for bq27520 to access the tool folder. Use the following steps to install the bq27520EVSW
software:
1. Ensure that the EV2300 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 to the computer using the USB cable.
6. Wait until system prompt "new hardware found" appears. If Windows cannot find the drivers
automatically, 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. After 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.
5
Troubleshooting Unexpected Dialog Boxes
The user that 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 policy.
6
Hardware Connection
The bq27520EVM-001 comprises three hardware components: the bq27520 circuit module, the EV2300
PC interface board, and the PC.
6.1
Connecting the bq27520 Circuit Module to a Battery Pack
Figure 6
shows how to connect the bq27520 circuit module to the cells and system load/charger.
8
bq27520EVM With System-Side, Single-Cell Impedance Track™ Technology
Table 3. Performance Specification Summary
Copyright © 2010, Texas Instruments Incorporated
www.ti.com
Min
Typ
Max
Units
2.7
3.6
4.3
V
0
1
2
A
SLUU426 – June 2010
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