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Test Summary
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Figure 3. Main Window of the bq2415x Evaluation Software
2.4 Procedure
2.4.1 Charge Voltage and Current Regulation
1. Ensure that Section 2.3 steps are followed. Turn on PS1.
2. Software setup: Click Immediate Update Disabled button. It changes to Immediate Update Enabled.
Check Auto Reset Enable, set Rate to 5 seconds. Check Periodic Updates, set Rate to 1 second.
Ensure that Operation Mode is Charger Mode. Uncheck Charge Current Termination. Check STAT
Pin. Select Battery Regulation Voltage to 4.20V.
Measure
→ V(J2(VBAT+, VBAT–)) = 4.2 ±100 mV
Observe → D1 is on.
3. Enable Load 2.
Measure → V(J2(VBAT+, VBAT–)) = 2.5 ±100 mV
Measure → Ichrg = 160 mA ±40 mA
Measure → Iin = 93 mA ±5 mA
4. Select Charge Current to 1.25 A, select Input Current Limit to 500 mA.
Measure → Ichrg = 750 mA ±100 mA
Measure → Iin = 475 mA ±25 mA
5. Check Disable Charger. Turn off PS1, turn off Load 2, and disconnect
2.4.2 Boost Function (For –001, –002, –003, –004, –007 ONLY)
1. Adjust PS1 output to 3.7 V and disable the output. Connect the PS1 in series with a current meter
(multimeter) to J2 (BAT+, BAT-). Ensure that a voltage meter is connected across J2 (BAT+, BAT-).
2. Set the Load 1 current to 200 mA ±20 mA but disable the output. Connect the output of the Load 1 in
series with a current meter (multimeter) to J1 (DC+, DC-). Ensure that a voltage meter is connected
across J1 (DC+, DC-). The setup is now like that shown in
Figure 4 for HPA255.
6 bq2415x RGY EVM (HPA255) SLUU366A – March 2010 – Revised April 2010
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