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User Guide for
FEBFL77944_L80L012A
FEBFL77944_L80L012B
Evaluation Board
12 W Down Light AC LED Driver at Low-Line
Featured Fairchild Product:
FL77944
Direct questions or comments
about this evaluation board to:
"Worldwide Direct Support"
Fairchild Semiconductor.com
FEBFL77944_L80L012A_B • Rev. 1.0
© 2016 Fairchild Semiconductor Corporation
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Summary of Contents for Fairchild FEBFL77944_L80L012A
- Page 1 FEBFL77944_L80L012A FEBFL77944_L80L012B Evaluation Board 12 W Down Light AC LED Driver at Low-Line Featured Fairchild Product: FL77944 Direct questions or comments about this evaluation board to: “Worldwide Direct Support” Fairchild Semiconductor.com FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation...
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Page 2: Table Of Contents
7. Low-Line with SVF Evaluation Board ................... 15 7.1. Evaluation Board Schematic ..................15 7.2. Key Performance Measurements ................... 16 7.3. Dimming Performance ....................17 7.4. Electromagnetic Interference (EMI) ................17 8. Revision History ........................18 FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 3: Introduction
This user guide supports the evaluation kit for the FL77944. It should be used in conjunction with the FL77944 datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at www.fairchildsemi.com. Introduction This document describes a direct AC line LED driver with a minimal number of external components. -
Page 4: Controller Internal Block Diagram
1.3. Controller Internal Block Diagram LED1 Shunt Regulator LED Current LED2 Modulator LED3 Over- Temperature Current LED4 Protection Feedback MODE Figure 1. Simplified FL77944 Block Diagram FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 5: Evaluation Board Test Outline
Photo Sensor: Hamamatsu for Flicker Index 1. Startup Performance 2. Normal Operation 3. Efficacy 4. Flicker Index Test Items 5. Power Factor 6. Total Harmonic Distortion(THD) 7. Dimming Performance 8. Conduction EMI FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 6: Evaluation Board Specifications
Evaluation Board Specifications Version A Version B SVF Cap. For Normal Electrolytic Capacitors For SMD Electrolytic Capacitors PHOTO 100 mm Diameter Metal Material 1.6 t Thickness Low-Line: 108 ~ 132 V Input FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 7: Evaluation Board Operating Temperature
Spot 3 = LED 3(70.5°C), Spot 4= LED 12(75.3°C) Spot Spot 5 = LED 6(73.3°C), Spot 6= LED 11(74.8°C) Spot 7 = Heat sink(53.4°C), Spot 8= PCB(56.4°C) Circle = IC (71.9°C) FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 8: Evaluation Board Bill Of Materials (Bom)
CHIP- CAP 15 nF/K 25 V 1608 (0603) C2, C3 Dim-6 Zener Diode 10 V, MM3Z10VB SOD323F Fairchild Dim-7 OP Amp KSP2907 Q1, Q2 Fairchild 576 1% Dim-8 CHIP-RES 2012 FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 9: Low-Line Without Svf Evaluation Board
Input Voltage 108 ~ 132 Output Power Φv(lm) If(mA) Vf(V) Power(W) Lm/W 5700K(G) 42 (Typ.) 31.8 1.27 Option 0 V – 10 V Dimming Dimmer SF 10p-W by Cooper Wiring Devices FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 10: Key Performance Measurements
. THD is reduced by an increased input voltage. However the efficacy is decreased by increasing the input voltage. The input power rate should be larger than the rise of the lumen. FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 11: Startup
50 / 60 Hz when no dimmer is connected. The input current starts flowing at least 2 ms after the AC input power switch turns-on for all condition. FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 12: Normal Operation
LED forward voltage (35 V * 4 ea = 140 V). Also the conduction time of the LED 4 pin is depend on the input voltage. FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 13: Dimming Operation & Performance
The converter output current at the rated line voltage can be adjusted within the range of 8.4% to 100% of the nominal current value through 0 to 10 V A-DIM signal. FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 14: Electromagnetic Interference (Emi)
, 60 Hz, <L>. At least 10 dB Figure 8. 110 V , 60 Hz, <N>At least 10 dB Margin, Margin, Blue Trace: Peak Scan, Green Trace: Blue Trace: Peak Scan, Green Trace: Average Average Scan Scan FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 15: Low-Line With Svf Evaluation Board
Input Voltage 108 ~ 132 Output Power Φv(lm) If(mA) Vf(V) Power(W) Lm/W 5700K(G) 42 (Typ.) 31.8 1.27 Option 0 V – 10 V Dimming Dimmer SF 10p-W by Cooper Wiring Devices FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 16: Key Performance Measurements
. THD are reduced by an increased input voltage. However the efficacy is decreased by increasing the input voltage. The input power rate should be larger than the rise of the lumen. FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 17: Dimming Performance
, 60 Hz, <L>, At Least 10 dB Figure 12. 120 V , 60 Hz, <N>, At least 12 dB Margin, Blue Trace: Peak Scan, Green Trace: Margin, Blue Trace: Peak Scan, Green Trace: Average Scan Average Scan FEBFL77944_L80L012A_B • Rev. 1.0 © 2016 Fairchild Semiconductor Corporation... -
Page 18: Revision History
Either the applicable sales contract signed by Fairchild and Buyer or, if no contract exists, Fairchild’s standard Terms and Conditions on the back of Fairchild invoices, govern the terms of sale of the products described herein.