EVM Hardware and Software Setup
4.4
bq27620 Circuits Module Performance Specification Summary
This section summarizes the performance specifications of the bq27620 circuit module.
Table 3. Performance Specification Summary
Specification
Min
Typ
Max
Units
Input voltage Pack+ to Pack
–
2.7
3.6
4.3
V
Charge and discharge current
0
1
2
A
5
EVM Hardware and Software Setup
This section describes how to install the bq27620EVM PC software and how to connect the different
components of the EVM.
5.1
System Requirements
The bq27620EVSW software requires 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.
5.2
Software Installation
Find the latest software version in the bq27620 tool folder on
. Make a search by Part
Number for bq27620 to access the tool folder. Use the following steps to install the bq27620EVSW
software:
1. Ensure that the EV2300 or EV2400 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 to the computer using the USB
cable.
6. If EV2300 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. 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.
6
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.
7
Hardware Connection
The bq27620EVM comprises three hardware components: the bq27620 circuit module, the EV2300 PC
interface board, and the PC.
7.1
Connecting the bq27620 Circuit Module to a Battery Pack
shows how to connect the bq27620 circuit module to the cells and system load/charger.
8
bq27620 EVM: Single-Cell Impedance Track Technology
SLUU655
–
October 2011
Copyright
©
2011, Texas Instruments Incorporated