Test Procedure for the LV5011MDGEVB Evaluation Board 1.Test Setup 1.1 Test Equipment Voltage Source: 220VAC AC source, NF EPO2000S Power Meter: HIOKI 3332 Volt Meter: ADVANTEST R6441D DIGITAL MULTIMETER AMP Meter: Agilent DIGITAL MULTIMETER 34401A Output Load: 4 LEDs series (LED: OSW4Z3E1C1E) Oscilloscope: LeCroy WaveRunner 6050A Operating Temperature: 25℃ 1.2 Recommended Test Setup Volt Meter + Power Meter AMP Meter Neutral AC INPUT AC Source LED+ LV5011MDGEVB Line Dimmer Min LED- At No Dimming, Connect this line Max LED Figure1. LV5011MDGEVB Recommended Test Set Up 1.3 List of Test Points Table1. Test Points Functions TEST POINTS NAME DESCRIPTION Neutral 120VAC neutral connection Line 120VAC line voltage LED+ LED anode connection LED- LED cathode connection 10/15/2013 1 www.onsemi.com 2. Test Procedure 2.1 Line/Load Regulation and Efficiency Measurement Procedure 1. Connect LV5011MDGEVB like upper Figure1. An external LED load must be used to start up the EVB. 2. Prior to turning on the AC source, set the voltage to 120VAC. 3. Turn on the AC Source. 4. Record the output voltage readings from Volt Meter and the output current reading from AMP Meter. And Record the input power reading from Power Meter. 5. Change VAC from 108VAC to 132VAC and perform “4”. 6. Refer to Section 2.2 for shutdown procedure. 2.2 Equipment Shutdown 1. Turn off equipment. 2. Make sure capacitors are discharged. 2.3 Phase Angle Decode vs LED Current (at dimming) 1. Connect LV5011MDGEVB like upper Figure1. An external LED load must be used to start up the EVB. 2. Prior to turning on the AC source, set the voltage to 120VAC. 3. Monitor the Dimmer output AC voltage between the neutral and the line by using the oscilloscope differential probe. 4. Turn on the AC Source. 5. Maximize the dimmer ratio. 6. Record the output voltage readings from Volt Meter and the output current reading from AMP Meter. And Record the input power reading from Power Meter. And Record the phase angle of Dimmer output reading from the oscilloscope differential probe. 7. Gradually lower the Dimming ratio and perform "6". Repeat it until the Dimming ratio is minimized. 8. Refer to Section 2.2 for shutdown procedure. 10/15/2013 2 www.onsemi.com 3. Performance Data 3.1 Efficiency 3.2 Power factor Efficiency vs Input Voltage 84 Power Factor vs Input Voltage 0.85 50Hz 50Hz 60Hz 60Hz 0.80 Power Factor Efficiency [ % ] 82 80 78 0.75 0.70 76 74 0.65 100 110 120 130 140 100 Input Voltage [ VAC ] 120 130 140 Input Voltage [ VAC ] Figure2. Efficiency vs Input voltage Figure3. Power factor vs Input voltage 3.3 LED Current (Output current) 3.4 Output Voltage LED Current vs Input Voltage Output Voltage vs Input Voltage 150 50Hz 40.6 50Hz 145 60Hz 40.4 60Hz 140 40.2 135 40.0 Output Voltage [ V ] LED Current [ mA ] 110 130 125 120 115 110 39.8 39.6 39.4 39.2 39.0 38.8 105 100 38.6 100 110 120 130 140 100 Input Voltage [ VAC ] 120 130 140 Input Voltage [ VAC ] Fgure4. LED current vs Input voltage 10/15/2013 110 Figure5. Output voltage vs Input voltage 3 www.onsemi.com 3.5 Input voltage/current operation waveform (No dimming) 3.6 Output voltage/current operation Waveform (No dimming) CH1 : Input voltage (VAC) [10V/div] CH1 : Input voltage (VAC) [200V/div] CH4 : Input current [100mA/div] CH4 : Input current [100mA/div] 5msec/div 5msec/div Figure6. Input waveform Figure7. Output waveform 3.7 LED Current vs Phase angle [ VAC=120V, 60Hz, Dimmer : LEVITON IPI06 ] LED Current vs Phase angle 140 LED Current [mA] 120 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 180 phase angle [ deg ] Figure8. LED current vs Phase angle 10/15/2013 4 www.onsemi.com 3.8 Dimming operation waveform Phase angle = 120 degree 3.9 Dimming operation waveform Phase angle = 60 degree [ VAC=120V, 60Hz, Dimmer : LEVITON IPI06 ] [ VAC=120V, 60Hz, Dimmer : LEVITON IPI06 ] CH1 : Input voltage = Dimmer output [100V/div] CH1 : Input voltage = Dimmer output [100V/div] CH4 : Input current [200mA/div] CH4 : Input current [200mA/div] 5msec/div 5msec/div Figure10. Dimming operation waveform at Figure11. Dimming operation waveform at phase angle=120degree phase angle=60degree 10/15/2013 5 www.onsemi.com