NCP4371QC30GEVB ON Semiconductor

Test Procedure for the NCP4371QC30GEVB Demoboard W USB-A to USB-B AC source micro 90 265 Vac + A Ext. Power Supply +5.5V DC - V DC load 19 V / 3.5 A Figure 1: Test Setup The following steps describe the test procedure for all these boards: Required Equipment: Current limited AC Power Supply (e.g. AGILENT 6811B) 1pc DC Volt-Meter able to measure up to 60 V DC (e.g. KEITHLEY 2000) 1pc DC Amp-Meter able to measure up to 5 A DC (e.g. FLUKE 89 IV) 1pc Watt-Meter (e.g. Yokogawa WT210) 1pc DC Electronic Load (e.g. AGILENT 6060B) 1pc QC3.0 EMULATOR 1pc Test Procedure: 1. Connect the test setup as shown in Figure 1. 2. Apply an input voltage, VIN = 120 Vac 3. Check V = 5.0 V +/- 0.2 V OUT 4. Apply I = 500 mA OUT(load) 5. Check V > 4.5 V OUT 6. Check efficiency that Eff > 80% 7. Apply I = 2 A OUT(load) 8. Check V > 4.5 V OUT 9. Check efficiency that Eff > 82% 10. Apply I = 1 A OUT(load)11. Push button MODE on QC3.0 Emulator, yellow LED HVDCP CNT is on 12. Push UP button several times and observe if VOUT increases in 200mV steps 13. Push DOWN button several times and observe if VOUT decreases in 200mV steps 14. Push button MODE on QC3.0 Emulator (2x), yellow LED HVDCP 9V is on 15. Check V > 8.5 V OUT 16. Push button MODE on QC3.0 Emulator (1x), yellow LED HVDCP 12V is on 17. Check V > 11.5 V OUT 18. Push button MODE on QC3.0 Emulator (1x), yellow LED HVDCP 20V is on 19. Check V > 11.5 V OUT 20. Push button MODE on QC3.0 Emulator (1x), yellow LED HVDCP 5V is on 21. Check V > 4.5 V OUT 22. Increase an input voltage to VIN = 230 Vac 23. Apply I = 2 A OUT(load) 24. Check V > 4.5 V OUT 25. Check efficiency that Eff > 82% 26. Turn off AC source 27. End of the test