Texas Instruments Battery Charger Evaluation Module BQ24086EVM BQ24086EVM 데이터 시트
제품 코드
BQ24086EVM
www.ti.com
2.4
Required Equipment
+
bq24085
2.5
Test Equipment Setup
2.6
Test Procedure
Test Summary
a. Power Source: Current-limited 5-V laboratory power supply with its current limit set to 1 A
±
0.1 A
b. Two Fluke 75 digital multimeters (equivalent equipment or better)
c. Oscilloscope – TDS220 or better
d. Load test board shown in
c. Oscilloscope – TDS220 or better
d. Load test board shown in
Figure 1. Load Test Board
a. Connect the load board to the BAT+ and BAT- terminals. Set SW1 through SW4 in the ON position.
b. Connect a voltage meter to the BAT+/BAT- output to monitor the output voltage range (0 to 5 V).
c. Set the lab supply for 5.1 V
b. Connect a voltage meter to the BAT+/BAT- output to monitor the output voltage range (0 to 5 V).
c. Set the lab supply for 5.1 V
±
0.1 VDC and a 1.0
±
0.1 A current limit.
d. Turn off supply.
e. Connect the source supply to a current meter and to J1, noting polarity (may use an internal source
e. Connect the source supply to a current meter and to J1, noting polarity (may use an internal source
current meter, if it has 5% or better accuracy).
1. Ensure that all
steps are performed. Switches should be in the ON position and
power source set to 5.1 V
±
0.1 VDC.
•
bq24085 and bq24086—place shunts on pins 1 and 2 for jumpers JMP1, JMP2, and JMP3, JMP4.
•
bq24087—place shunts on pins 1 and 2 for jumpers JMP1, JMP2, and JMP4. For JMP3, place
shunt on just one pin (do not short the pins).
shunt on just one pin (do not short the pins).
2. Turn on the power source.
3. Verify output voltage, BAT+, charges up to between 2.5 V to 2.9 V and the red STAT1 LED (D1) and
3. Verify output voltage, BAT+, charges up to between 2.5 V to 2.9 V and the red STAT1 LED (D1) and
green STAT2 LED light (all dash #s).
4. Verify the green PG LED (D3) lights for bq24085-001 and bq24086-002.
5. For bq24085 and bq24087, verify that J2-2 with respect to ground is less than 0.3 volts.
6. For bq24085, apply input voltage, J1-1 (+5 V) to J2-2, verify that charging stops (I
5. For bq24085 and bq24087, verify that J2-2 with respect to ground is less than 0.3 volts.
6. For bq24085, apply input voltage, J1-1 (+5 V) to J2-2, verify that charging stops (I
in
or I
bat
< 30 mA).
Remove 5 V from J2-2.
7. For bq24087, apply input voltage, J1-1 (+5 V) to J2-2, verify that charging continues. Remove 5 V from
J2-2.
8. For bq24087, apply shunt across pins 1 and 2 of JMP3, verify that charging stops (I
in
or I
bat
< 30 mA)
and STAT1 (D1) and STAT2 (D2) LEDs turn off. Remove JMP3 shunt and place on just one pin.
9. For bq24086, verify that J2-2 with respect to ground is between 2 V and 3 V.
10. Adjust the Input Voltage to 7.0
10. Adjust the Input Voltage to 7.0
±
0.1 V. Verify charging stops (I
in
or I
bat
< 30 mA) stops for bq24085,
bq24086, and bq24087, plus continues (no change) for bq24088.
4
bq24085/6/7/8 Evaluation Module
SLUU305 – March 2008