Test Procedure for the CS5171/CS5173 Evaluation Board Figure 1: Test Setup The following steps describe the test procedure for all these boards: Suggested Equipment: Current limited DC Power Supply (e.g. AGILENT 6645A) ……………………… 1pc DC Volt-Meter able to measure up to 60 V DC (e.g. KEITHLEY 2000) ………… 2pcs DC Amp-Meter able to measure up to 2 A DC (e.g. KEITHLEY 2000) ………......1pc DC Amp-Meter able to measure up to 5 A DC (e.g. FLUKE 89 IV)……………… 1pc DC Electronic Load (e.g. KIKUSUI PLZ153WH) ………………………………... 1pc 08/03/2011 1 www.onsemi.com Test Procedure: 1. Connect the test setup as shown in Figure 1. 2. Apply an input voltage, VIN = 12 Vdc 3. Apply IOUT(load) = 0 A 4. Check that VOUT = 200V + 5%Vdc 5. Set IOUT to desired level 0 mA- 20 mA and measure voltage and current. The efficiency should be similar to that shown in Figure 3 and 4. 6. Check that VOUT = 200V + 5%Vdc under desired operating condition 7. Turn off the load 8. Turn off VIN 9. End of the test Figure 2: CS5171 12V to 200V Efficiency 08/03/2011 2 www.onsemi.com Figure 3: CS5171 12V to 200V Load Regulation 08/03/2011 3 www.onsemi.com