Test Procedure for the LV5011MD2GEVB Evaluation Board
1.Test Setup
1.1 Test Equipment
Voltage Source: 230V
AC
AC source, NF EPO2000S
Power Meter: HIOKI 3332
Volt Meter: ADVANTEST R6441D DIGITAL MULTIMETER
AMP Meter: Agilent DIGITAL MULTIMETER 34401A
Output Load: 5 LEDs series (LED: OSW4Z3E1C1E)
Oscilloscope: LeCroy WaveRunner 6050A
Operating Temperature: 25℃
1.2 Recommended Test Setup
Volt Meter
-
+
Neutral
AC Source
AC
INPUT
Line
Dimmer
Min
Max
Power Meter
AMP
Meter
LED+
LV5011MD2GEVB
LED-
At No Dimming,
Connect this line
LED
Figure1.
LV5011MD2GEVB Recommended Test Set Up
1.3 List of Test Points
Table1.
Test Points Functions
TEST POINTS NAME
Neutral
Line
LED+
LED-
DESCRIPTION
230V
AC
neutral connection
230V
AC
line voltage
LED anode connection
LED cathode connection
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2. Test Procedure
2.1 Line/Load Regulation and Efficiency Measurement Procedure
1. Connect LV5011MD2GEVB 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 230V
AC
.
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 V
AC
from 198V
AC
to 264V
AC
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 LV5011MD2GEVB 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 230V
AC
.
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.
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3. Performance Data
3.1 Efficiency
3.2 Power factor
Efficiency vs Input Voltage
86
50Hz
60Hz
Power Factor vs Input Voltage
0.85
50Hz
60Hz
84
0.80
Efficiency [ % ]
Power Factor
82
0.75
80
0.70
78
0.65
76
190
200
210
220
230
240
250
260
270
0.60
190
200
210
220
230
240
250
260
270
Input Voltage [ VAC ]
Figure2.
Efficiency vs Input voltage
Input Voltage [ VAC ]
Figure3.
Power factor vs Input voltage
3.3 LED Current (Output current)
3.4 Output Voltage
LED Current vs Input Voltage
120
50Hz
Output Voltage vs Input Voltage
50.0
50Hz
60Hz
110
49.5
60Hz
LED Current [ mA ]
Output Voltage [ V ]
190
200
210
220
230
240
250
260
270
100
90
49.0
48.5
48.0
47.5
47.0
190
200
210
220
230
240
250
260
270
80
70
60
Input Voltage [ VAC ]
Fgure4.
LED current vs Input voltage
Input Voltage [ VAC ]
Figure5.
Output voltage vs Input voltage
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3.5 Input voltage/current operation waveform
(No dimming)
3.6 Output voltage/current operation
Waveform (No dimming)
CH1 : Output voltage (VAC) [20V/div]
CH1 : Input voltage (VAC) [200V/div]
CH4 : Output current [50mA/div]
CH4 : Input current [100mA/div]
5msec/div
5msec/div
Figure6.
Input waveform
Figure7.
Output waveform
3.7 LED Current vs Phase angle
[ V
AC
=230V, 50Hz, Dimmer : MERTEN 572599 ]
LED Current vs Phase angle
100
90
80
70
60
50
40
30
LED Current [mA]
20
10
0
0
20
40
60
80 100 120 140 160 180
phase angle [ deg ]
Figure8.
LED current vs Phase angle
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3.8 Dimming operation waveform
Phase angle = 120 degree
[ V
AC
=230V, 50Hz, Dimmer : MERTEN 572599 ]
3.9 Dimming operation waveform
Phase angle = 60 degree
[ V
AC
=230V, 50Hz, Dimmer : MERTEN 572599 ]
CH1 : Input voltage = Dimmer output [200V/div]
CH1 : Input voltage = Dimmer output [200V/div]
CH4 : Input current [100mA/div]
5msec/div
CH4 : Input current [100mA/div]
5msec/div
Figure9.
Dimming operation waveform at
phase angle=120degree
Figure10.
Dimming operation waveform at
phase angle=60degree
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