Texas Instruments bq2425xEVM-150, User Manual

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Battery Range:
0 to 4.3 V,
Sinks up to 4.5 V/(2.2
/2) 4.0 A max
Connect to Charger BAT+ to BAT
Ω –
–
BAT+
BAT–
BAT+
BAT–
J1
1
2
R3
0.1, 2 W 5 W –
Metal Strip
Sense Resistor
15FR100E
1 2
2
1
TBH25P5R6
R1
2.2, 25 W
D1
R2
2.2, 25 W
1N5821
BAT+
GND
P/S Range:
0 to 4.5 V,
3A max Current due to 1N5821
Connect to Power Source
2
1
J2
PS #2 +
PS #2 –
www.ti.com
Test Procedure
3. Adjust power supply #2 (PS #2) for approximately 3.6 V to the input side (PS #2±) of the battery
emulator shown in Figure 3 , then turn off PS #2.
Figure 3. Battery Emulator
4. Connect the output side of the battery or battery emulator in series with the current meter to J5 and J7
or J6 (BAT, GND).
5. Connect a voltmeter (VM#2) across J8 and J10 (SYS test point, GND).
6. Connect VM#3 across J5 and J7 (BAT, GND)
7. Connect J14 to the HPA172 kit with the 10-pin ribbon cable. Connect the USB port of the HPA172 kit
to the USB port of the computer. The connections are shown In Figure 4 .
Figure 4. Connector Kit
8. By default, all jumpers are set to operate upon arrival.
9. After the proceeding steps have been performed, the test setup for PWR150 is configured as is shown
in Figure 2 .
9 SLUUA08A – March 2013 – Revised April 2013 bq2425xEVM-150, Single-Cell Li-Ion Switch-Mode Charger
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