ON Semiconductor LV8762TEVB Reference guide

1/8/2014 1 www.onsemi.com
Test Procedure for the LV8762TEVB Evaluation Board
V
24V
5V
V
V
1.5V
SW-ST
ON
OF SW-EMM
ON
OF
SW-IN2
ON
OF
SW-IN1
ON
OF
L

1/8/2014 2 www.onsemi.com
Table 1: Required Equipment
Equipment
Product name
Qty
Power supply
KIKUSUI PMC18-3A
3
Multimeter
ADVANTEST R6441D
3
Electronic Load
KIKUSUI PLZ164W
1
Evaluation Board
LV8762TEVB
1
Test Procedure:
1. Connect the test setup as shown above.
2. Turn off the all switches.
3. Apply an input voltage, VM=24V across VM and GND.
4. Apply an input voltage, VCC=5V across VCC and GND.
5. Apply an input voltage, VREF=1.5V across VREF and GND.
6. Turn on the switch ‘ST’ as impress 5V to ST-pin.
7. Check the voltage VREG5. It should be about 5V.
8. Check the voltage VG. It should be about 28.7V.
9. Turn on the switch ‘IN1’ as impress 5V to the IN1-pin,
And turn off the switch ‘IN2’ as impress 0V to the IN2-pin.
10. Check the voltage between OUTA and OUTB. It should be about 24V.
11. Turn on the switch ‘IN2’ as impress 5V to the IN2-pin,
And turn off the switch ‘IN1’ as impress 0V to the IN1-pin.
12. Check the voltage between OUTA and OUTB. It should be about -24V.
13. Turn off the switch ‘IN1’ and ‘IN2’.
14. Apply 0.5A loading from the electronic load and Turn on the switch ‘IN1’.
15. Check the current OUTA to OUTB. It should be about 0.5A.
16. Apply 1.0A loading from the electronic load.
17. Check the current OUTA to OUTB. It should be about 0.5A.
(Q: Why is it not 1.0A? A: Because current limiting is working.)
18. Turn Off the All switches.
19. Power down VM and VCC.
20. End of test.