Texas Instruments bq2512 Series, User Manual

Page: 9 / 24

www.ti.com
Test Procedure
9 SLUUBC8A – August 2015 – Revised May 2016
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
bq2512x Evaluation Module
3 Test Procedure
3.1 Set the Potentiometers
1. Set VM#3 DMM to measure resistance
2. Install J11 to POT
3. Install J14 to POT
4. Turn the potentiometer R8 until the measure on VM#3
→
R[J11 (ISET), J11(GND)] = 2 k
Ω
.
5. Move the positive side of VM#3 DMM to J14 (ILIM).
6. Turn the potentiometer R12 until the measure on VM#3 → R[J14(ILIM), J14(GND)] = 499 Ω .
7. Move the positive side of VM#3 DMM to J6 (TS).
8. Turn the potentiometer R1 until the measure on VM#3 → R[J6 (TS), J14(GND)] = 5.5 k Ω – 6.5 k Ω .
9. Move the positive side of VM#3 DMM to J27 (SYS_S+).
10. Set VM#3 DMM to measure voltage.
3.2 Charge Disabled
1. Install the jumper on J7 – connect CD to SYS
2. Enable PS#1 and PS#2
3. Observe D2 is on, D1 is off
4. Measure on VM#3 → V[J27(SYS_S+) J14(GND)] = 1.8V ±50 mV
5. Measure on CM#2 → ICHRG ≤ 0–1 mA
6. Measure on CM#1
→
IIN < 2 mA
7. Disable PS#1 and PS#2
3.3 Charge Current Regulation
1. Remove the jumper on J7 – disconnect CD to SYS
2. Enable PS#1 and PS#2
3. Observe D2 is on, D1 is on
4. Adjust PS#2 so that the voltage measured by VM#2, across BAT and GND, measures 3.5 V
5. Adjust the PS#1 so that VM#1 still reads 5.0 V ±100 mV
6. Measure on VM#3 → V[J27(SYS_S+) J14(GND)] = 1.8 V ±50 mV
7. Measure on CM#2 → ICHRG = 90–110 mA
8. Measure on CM#1 → IIN = 93–113 mA
9. Disable PS#1 and PS#2
3.4 Ship Mode (Optional if I
2
C Control not Used)
1. Enable PS#1 and PS#2
2. Open the software GUI
3. Go to Field View of the GUI and then read all the registers. All the default register values should be
shown in the register map (as shown in Figure 3 ).
4. Measure on CM#2 → ICHRG = 9–11 mA
5. Install the jumper on J7 – connect CD to SYS
6. Disable PS#1
7. Measure on CM#2 → ICHRG = 5–7 µA
8. Check the box in front of “EN_SHIPMODE” in the software GUI