Datasheet
Table Of Contents
- Using the LM3447-A19-120VEVM
- 1 Introduction
- 2 Description
- 3 Electrical Performance Specifications
- 4 Schematic
- 5 Test Setup
- 6 Test Procedure
- 7 Performance Data and Typical Characteristic Curves
- 7.1 Efficiency
- 7.2 Power Factor
- 7.3 Line Regulation
- 7.4 Input Current THD
- 7.5 Output Ripple
- 7.6 Switch Node Voltage Valley Switching
- 7.7 Triac Dimmer LED Current vs Conduction Angle
- 7.8 Turn-On Angle vs Input Power
- 7.9 Input/Output Current and Line Voltage Waveforms vs. Dimmer Setting
- 7.10 Current Sense Waveform
- 7.11 LED Open and Short Circuit Waveforms
- 7.12 EMI Plot
- 7.13 Transformer Specification
- 8 EVM Assembly Drawing and PCB Layout
- 9 List of Materials
- Important Notices
Efficiency vs Line Voltage
75.00
77.00
79.00
81.00
83.00
85.00
87.00
89.00
90 100 110 120 130 140
Input voltage (VAC)
Efficiency (%)
Input voltage vs. PF
0.9
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1
90 100 110 120 130 140
Input voltage (VAC)
Power Factor
Performance Data and Typical Characteristic Curves
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7 Performance Data and Typical Characteristic Curves
Figure 3 through Figure 26 present typical performance curves for LM3447-A19-120VEVM.
7.1 Efficiency
Figure 3. LM3447-A19-120VEVM Efficiency
7.2 Power Factor
Figure 4. LM3447-A19-120VEVM Power Factor vs Line Voltage
8
LM3447-A19-120VEVM is a Phase-Dimmable, Primary-Side Regulated LED SLUU937–May 2012
Driver
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