2 Test Summary
This section describes the jumpers and connectors on the EVM as well as how to properly connect, setup, and
use the BQ25172EVM.
2.1 Equipment
This section includes a list of supplies required to perform tests on this EVM.
1. Battery simulator such as Keithley 2400 or equilvalent. A real NiMH battery may also be used.
2. Power supply, 5V 1A input. Note that unit can operate up to 6.6V input.
3. Voltage meter and current meter.
2.2 Cautions
To prevent possible damage to battery under test verify that charging conditions of the cell are not exceeded.
Check max charge voltage and current.
Power dissipation of the device can be exceeded with too high an input to output voltage drop and current.
Thermal regulation begins reducing current at 125 °C, at 150 °C device will shut off.
Device can get hot during high input-to-output voltage drop and high current conditions. Use caution when
handling the board.
2.3 Test Instructions
In order for this EVM to operate properly, the following components must be connected and properly configured.
1. Set input power supply to 5V and Battery Simulator to 2.2V with compliance to support 800mA. Turn off
Supply and Battery Simulator.
2. Connect input voltages to J1 and Battery Simulator to J2 on the EVM.
3. Configure all EVM jumpers to factory setting, refer to table below.
4. Turn on all supplies and loads
a. 5V Input supply current limit should be greater than 500mA
b. Out voltage should be 2.2V and charge current 400mA
5. Simulate battery completing charge by increasing Battery Simulator voltage to 2.4V
a. Current will decrease to 0mA
Table 2-1. Jumper Factory Setting
I/O Connector
Factory Setting
JP1
Installed
JP2
IN
JP3
Installed
JP4
Fixed
JP5
Installed
JP6
Fixed
JP7
N/A
JP8
N/A
JP9
N/A
S1
Position 1
S2
N/A
Note: IN, ON, Fixed are positions of a 3 pin header. If it is a 2 pin header then it is installed or not installed.
Test Summary
SLUUCO1 – JULY 2022
BQ25172EVM Evaluation Module
3
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