Test Procedure for the NCP1602BOOSTEVB Evaluation Board Equipment Needed: The board testing set-up is shown in Figure 1 and the tested board in Figure 2. • Apply an electronic load across the output (between the “V BULK ” and “GND” terminals of the board). This equipment will adjust the current I LOAD that loads the evaluation board. • Apply a 200-W or more, 60-Hz, isolated ac power source to the “L” and “N” inputs of the evaluation board. This source will adjust the sinusoidal input voltage, V in , that is applied to the evaluation board. The rms value of V in must stay below 265 V. • Apply a 20-V dc source with a 50-mA clamp current between the V CC and GND terminals of the evaluation board. • Place a power analyzer able to measure the power factor (“PF”) and the Total Harmonic Distortion (“THD”) of the current absorbed from the ac power source. • Place an oscilloscope current probe on the wire connected to the “L” input of the evaluation board to monitor the input current waveform. Measurements • VBULK,PF and THD measurements Parameters V BULK PF THD V BULK PF THD V BULK PF THD Comments V in,rms = 115 V, I LOAD = 0.1 A Voltage measured between “V BULK ” and “GND” Power Factor Total Harmonic Distortion V in,rms = 115 V, I LOAD = 0.4 A Voltage measured between “V BULK ” and “GND” Power Factor Total Harmonic Distortion V in,rms = 230 V, I LOAD = 0.4 A Voltage measured between “V BULK ” and “GND” Power Factor Total Harmonic Distortion Limits 390 V < V BULK < 410 V >_0.930 < 25% 390 V < V BULK < 410 V >_0.990 < 15% 390 V < V BULK < 410 V >_0.950 < 20% Static OVP Observe that when the I LOAD is reduced to zero, the V BULK node is still regulating within the 390-410-V range 3/10/2014 1 www.onsemi.com DC Voltage Souce Oscilloscope Isolated current probe Ground terminal of the probe VCC L Isolated ac power source (200-W, 60-Hz sinusoidal voltage) + VBULK NCP1602-AEA Evaluation Board N Electronic Load (500 V, 0.5A) GND Power Analyser (e.g. PM1200) Figure 1. Set-up for board testing N L +VCC GND +VBULK GND Figure 2. Tested Evaluation Board ***WARNING*** *********************************************************************************************** The board contains high-voltage and hot, live parts. It should only be handled by experienced power supply professionals. Be very cautious when manipulating or 3/10/2014 2 www.onsemi.com testing it. It is the responsibility of the boards users to take all the precautions to avoid electric hazards and any other pains. 3/10/2014 3 www.onsemi.com