Texas Instruments bq24261M, User Manual, Page: 10 / 25

Test Summary
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Figure 5. Main Window of bq24261MSW Evaluation Software
2.4 Recommended Test Procedure
The following test procedure may be useful for evaluating the charger IC outside of a real system, if no
battery is available to connect to the output and a simulated battery if needed.
2.4.1 Charge Voltage and Current Regulation of IN in HOST mode
1. Ensure that the Section 2.3 steps are followed.
2. Ensure that the shunts are installed as highlighted in yellow in Figure 4 .
3. Connect the output of Power Supply #1 (PS #1), with at least a 4-A current limit setting, in series with
current meter (multimeter) #1 (CM #1) to J1 as shown in Figure 4 .
4. Connect voltage meter 1 (VM #1) across J4 and J3 or TP5 and or TP7 (IN, GND).
5. Connect either a real single cell lithium ion battery or battery simulator across J14 or J13/J5 (BAT,
GND) with current meter #2 in series as shown in Figure 4 . If using a battery simulator like the one
shown in Figure 2 and referred to as BAT_LOAD in Figure 4 , configure power supply #2 (PS#2) with at
least 4-A current limit for 3.4 V.
6. Install voltage meter #1 (VM #1) across J4 and J3 or TP5 and TP7 (IN and GND).
7. Install voltage meter #2 (VM #2) across J13 and J5 or TP1 and TP7 (BAT and GND).
8. Install voltage meter #3 (VM #3) across J12 and J10 or TP4 and TP7 (SYS and GND).
9. Voltage meter #4 is optional.
10. Turn on PS #1 and PS #2 if used.
11. Software setup:
• Press the READ button to obtain the current settings.
• Set Write On Change to ON if not already set.
• Set Reset Watchdog Timer to reset every 5 seconds.
• Uncheck Disable Charging if checked.
• Check Enable STAT/INT Outputs .
10 User's Guide for WCSP-Packaged bq24261M 3-A Battery Charger SLUUBB5A – April 2015 – Revised October 2015
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