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Summary of Contents for Fairchild FEBFL7730_L20H008A
- Page 1 User Guide for FEBFL7730_L20H008A 8.4W LED Bulb Using FL7730 Featured Fairchild Product: FL7730 Direct questions or comments about this evaluation board to: “Worldwide Direct Support” Fairchild Semiconductor.com © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2...
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Page 2: Table Of Contents
Open/Short-LED Protections ..................13 6.5. Dimming Operation ......................14 6.6. System Efficiency ......................16 6.7. Power Factor and THD ....................16 6.8. Operating Temperature ....................17 6.9. EMI..........................18 7. Revision History ........................19 © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 3: Introduction
This user guide supports the evaluation kit for the FL7730. It should be used in conjunction with the FL7730 datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at www.fairchildsemi.com. 1. Introduction This document describes the proposed solution for low-line voltage LED ballast using the FL7730 PSR single-stage controller. -
Page 4: Internal Block Diagram
1.3. Internal Block Diagram Figure 1. Internal Block Diagram © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 5: General Specifications
Note: Open-Frame Condition (T =25ºC) 46ºC FL7730 Temperature FL7730 53ºC Primary MOSFET Temperature MOSFET Temperature 45ºC Secondary Diode Temperature DIODE 48ºC Transformer Temperature TRANSFORMER 49ºC Active Damper Temperature DAMPER 55ºC Startup Resistor Temperature STR.RESISTOR © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 6: Photographs
Bulb Case Type 1 : 32mm (Case Diameter) 40mm (Case Depth) Figure 6. Side View in Bulb Case Type 2 Figure 7. Bottom View in Bulb Case Type 2 Bulb Case Type 2 : 34mm (Case Diameter) 44mm (Case Depth) © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 7: Printed Circuit Board
4. Printed Circuit Board Figure 8. Printed PCB, Top Side Figure 9. Printed PCB, Bottom Side © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 8: Schematic
5. Schematic Figure 10. Schematic of Evaluation Board © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 9: Bill Of Materials
Yageo RC0805JR-0710RL 10Ω SMD Resistor 2012 Yageo RC1206JR-071R2L 1.2Ω SMD Resistor 3216 Yageo RC1206FR-071RL 1.0Ω SMD Resistor 3216 Yageo RC0805JR-070RL 0Ω SMD Resistor 2012 Yageo RC1206JR-0751KL 51kΩ SMD Resistor 3216 Yageo © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 10: Transformer And Winding Specifications
Insulation : Polyester Tape t = 0.025mm, 6 Layer Table 3. Electrical Characteristics Specification Remark Inductance 1– 2 1mH ±10% 50kHz, 1V Leakage 1– 2 8µH 50kHz, 1V Short All Output Pins © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 11: Performance Of Evaluation Board
Output current ripple is ±65mA with a rated output current of 380mA. = 220V = 180V = 230V = 265V Figure 14. Operation Waveforms – V [22V], I [380mA], C1 [V ], C3, [V ], C4 [I © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 12: Constant Current Regulation
Table 5. Constant Current Regulation by Line Voltage Change (90~140V Output 180V 220V 230V 265V Tolerance Voltage 392mA 388mA 387mA 377mA ±1.9% 390mA 387mA 384mA 377mA ±1.7% 386mA 383mA 382mA 375mA ±1.4% © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 13: Open/Short-Led Protections
. The output over-voltage protection level can be controlled by turn ratio of auxiliary and secondary windings. Figure 17. Open-LED Condition – V [220V ], C1 [V ], C2 [V ], C3 [V © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 14: Dimming Operation
Figure 18. Dimming Operation Waveforms – Max. Dimming Angle, V [220V ], C1 [V ], C2 [V ], C4 [I Figure 19. Dimming Operation Waveforms – 90º Dimming Angle, V [220V ] ,C1 [V ], C2 [V ], C4 [I © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... - Page 15 Figure 21. The dimming control block in FL7730 smoothly changes regulated output current by detecting dimming angle. Figure 21. Dimming Curve (Effective RMS Input Voltage vs. Output Current) – Line Voltage [220V © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2...
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Page 16: System Efficiency
Table 8. Power Factor and THD Input Voltage Output Current Output Voltage 180V 392mA 21.84V 0.97 13.7% 220V 386mA 21.80V 0.93 16.6% 230V 385mA 21.79V 0.92 17.3% 265V 376mA 21.75V 0.87 19.7% © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 17: Operating Temperature
Board Temperature - Top View, V [220V ], I [380mA] Diode : 45 ºC Bottom of MOSFET : 51 ºC FL7730 : 46 ºC Figure 24. Board Temperature - Bottom View, V [220V ], I [380mA] © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 18: Emi
6.9. The all measurement was conducted in observance of CISPR22 criteria. Figure 25. EMI Results – V [220V], V [22V], I [380mA] © 2012 Fairchild Semiconductor Corporation FEBFL7730_L20H008A • Rev. 0.0.2... -
Page 19: Revision History
Fairchild warrantees that its products meet Fairchild’s published specifications, but does not guarantee that its products work in any specific application. Fairchild reserves the right to make changes without notice to any products described herein to improve reliability, function, or design. - Page 20 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: ON Semiconductor FEBFL7730_L20H008A FEBFL7730-L20H008A-GEVB...