Test Procedure for the NCP4305 Evaluation board NCP4305FBDAPGEVB 27/09/2012 V AC Source 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 20 V DC (e.g. KEITHLEY 2000) ………… 1pc DC Amp-Meter able to measure up to 6 A DC (e.g. FLUKE 89 IV)……………… 1pc DC Volt-Meter able to measure up to 20 V DC (e.g. FLUKE 89 IV)…………… 1pc DC Electronic Load (e.g. AGILENT 6060B) ……………………………………... 1pc Test Procedure: 1. Connect the test setup as shown in Figure 1. 2. Apply an input voltage, VIN = 85 Vac 3. Apply IOUT(load) = 100 mA 4. Check that VOUT = 12 Vdc 5. Set IOUT to 5.5 A 6. Check that VOUT = 12 Vdc 7. Apply an input voltage, VIN = 230 V 8. Check that VOUT = 12 Vdc 9. Check voltage at points according to Figure 2. It should be around 6 V. 10. Change load mode to resistive mode 11. Apply RLOAD = 1.3 Ω 12. Check VOUT = ~7.6 V, IOUT = ~5.9 A 13. Disconnect DC load 14. Check if VOUT slowly decreases down to 3 V and then quickly rises to 12 V 15. Turn off VIN 16. End of the test DC Load + + V Figure 2: Measure points