User Guide for FEBFL7730_L20L008A, 8.4W LED Bulb Using FL7730
Contents
1. Regulation 12 Smort LED Protections 13 cba 14 oM siem Efficiency METRO Dee 17 and THD 17 Temperature ED 18 2 MIL 19 20 2012 Fairchild Semiconductor Corporation 2 FEBFL7730 L20L008A Rev 0 0 4 p 951 FAIRCHILD a aaa SEMICONDUCTOR ww faircdhildsemi com This user guide supports the evaluation kit for the FL7730 It should be used in conjunction with 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 The input voltage range is 90Vgys 140 and there is one DC output with a constant current of 380mA at 22 This document contains general description of FL7730 the power supply specification schematic bill of materials and the typical operating characteristics 1 1 Ge2. FAIRCHILD a ww fairchilldsemi am SEMICONDUCTOR User Guide for FEBFL7730 L20L008A 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 L20L008A Rev 0 0 4 AA FAIRCHILD resumen tes cpm mti SEMICONDUCTOR Table of Contents l TOUCH 3 Li Geucral DSS Clip MOM aa E E E E R E 3 2 RR RERO 3 1 3 Internal Block Diagram 4 2 General 5 3 Photographs o 6 4 Printed Circuit 7 5 Schematic rrr ERE eene nnns 8 21 9 2 2 Transformer and Winding Specifications 10 ation Board PEE 11 T lo D 11 DUE avetforms NES 11
3. ww fairchildsemi com SEMICONDUCTOR 7 Revision History me Um Wen FEB 23 2012 Change User Guide number from FEB L020 1 to FEBFL7730 L20L008A FEB 24 2012 Initial edit format pass FEB 28 2012 Initial edit Part list figure number MAR 8 2012 BOM revision and minor error correction WARNING AND DISCLAIMER Replace components on the Evaluation Board only with those parts shown on the parts list or Bill of Materials in the Users Guide Contact an authorized Fairchild representative with any questions This board is intended to be used by certified professionals in a lab environment following proper safety procedures Use at your own risk The Evaluation board or kit is for demonstration purposes only and neither the Board nor this User s Guide constitute a sales contract or create any kind of warranty whether express or implied as to the applications or products involved 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 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 DISCLAIMER FA
4. 50 0 120 100 80 60 40 20 0 Effective RMS Input Voltage Vrms Figure 21 Dimming Curve Effective RMS Input Voltage vs Output Current Line Voltage 120Vac 2012 Fairchild Semiconductor Corporation 15 7730 1201008 Rev 0 0 4 p 951 FAIRCHILD EE SEMICONDUCTOR ww fairchildsemi com Table 6 TRIAC Dimmer Compatibility Current Current 2012 Fairchild Semiconductor Corporation 16 7730 1201008 Rev 0 0 4 FAIRCHILD resumen tes cpm mti SEMICONDUCTOR ww fairch ildsemi 6 6 System Efficiency Power efficiency is 80 7 82 9 in 90 140V input voltage range 90 88 86 84 Eff 82 20 78 76 74 72 70 90Vac 110Vac 120Vac 140Vac Input Voltage V Figure 22 Power Efficiency Input Voltage vs Efficiency Table 7 System Efficiency Input Output Output Output oan Voltage Input Poweg Current Voltage Power 90Vac 9 68W 360mA 21 70V 7 81W 80 7 110Vac 9 96W 3 6mA 21 77V 8 19W 82 2 120Vac 10 02W 380mA 21 77V 8 27W 82 5 140Vac 10 15W 386mA 21 79V 8 41W 82 9 6 7 Power Factor and THD FL7730 shows excellent power factor and THD performance Power factor is very high with enough margins from 0 9 THD is much less than 30 specification Table 8 Power Factor and THD 2012 Fairchild Semiconductor Corporation Input Voltage Output Curr
5. 69 6 V TOM 307 2 mA X2 38 069ms 1 31068 Hz 94 4 V 19 82 299 2 Figure 13 Startup 110 C1 Vin C2 Vcs Voo CA lour No Dimmer Connected 6 2 Operation Waveforms In steady state line compensation regulates output current regardless of input voltage variations Output current ripple is 65mA with a rated output current of 380mA Vin 90VAc 110V ac Figure 14 Waveforms Vo 22V lo 380mA C1 Ves Vin lout 2012 Fairchild Semiconductor Corporation 11 FEBFL7730 L20L008A Rev 0 0 4 ww fairchildsemi com p FAIRCHILD resumen tes cpm mmt SEMICONDUCTOR 6 3 Constant Current Regulation Constant current deviation in the output voltage range from 10V to 28V is less than 2 1 at each line input voltage Line regulation at the rated output voltage 22V is less than 3 9 0 100 200 300 400 500 Output Current mA Figure 15 Constant Current Regulation Measured by E Load CR Mode Table 4 Constant Current Regulation by Output Voltage Change 10 28V Input Voltage Min Current Max Current Tolerance 90Vac 60Hz 352mA 365mA 1 8 110 60 2 368mA 384mA 2 1 120V ac 60Hz 3 4mA 388mA 1 8 140Vac 60Hz 381mA 395mA 1 8 Table 5 Constant Current Regulation by Line Voltage Change 90 140 Output Voltage 90Vac 110Vac 120Vac 140V ac
6. Regulations for the ultimate destination listed on the commercial invoice Diversion contrary to U S law is prohibited U S origin products and products made with U S origin technology are subject to U S Re export laws In the event of re export the user will be responsible to ensure the appropriate U S export regulations are followed 2012 Fairchild Semiconductor Corporation 20 FEBFL7730 L20L008A Rev 0 0 4
7. Tolerance 20V 355mA 3 2mA 377 383mA 3 890 22V 360 3 2mA 377 386 3 5 24V 357 374 383mA 386mA 3 990 2012 Fairchild Semiconductor Corporation 12 FEBFL7730 L20L008A Rev 0 0 4 p 951 FAIRCHILD a eee ea mon om SEMICONDUCTOR 6 4 Open Short LED Protections In short LED condition the OCP level 15 reduced from 0 7V to 0 2V because the FL7730 lowers the OCP level when Vs voltage 15 less than 0 4V during output diode conduction time The output current in the short LED condition is less than 1 5A which doesn t damage any external components LeCroy rigger a imebase 0 005 500 5 00 Vidiv 100 Vidiy Rall 1 00 Stop 80 mA 1 500 ofst 15 000 0 00 offset 5 00MS S500kSisfEdge Positive Figure 16 Short LED Condition 110V ac C1 Vcs C2 Voo Vin C4 lout In open LED condition output voltage is limited around 32V by OVP in Vpp The output over voltage protection level can be controlled by turn ratio of auxiliary and secondary windings LeCroy imebase 0 00 Trigger 500 5 00 Roll 1 00 Stop 80 mA 1 500 V ofst 15 000 5 00 5 500kS s Edge Positive Figure 17 Open LED Condition 110V 4c C1 Vcs C2 Voo Vin 2012 Fairchild Semiconductor Corporation 13 FEBFL7730 L20L008A Rev 0 0 4 FAIRCHILD HIR S
8. EMICONDUCTOR 6 5 Dimming Operation Dimming operation waveforms are shown in Figure 18 Figure 20 Active damper RC bleeder and dimming control in FL7730 implement flicker free dimming operation Spike current at dimmer firing is less than 1 2A rigger 200 m idiv 500 mAdiv 5 00 Auto 80 mA 600 0 mV 500 ofst 5 00 5 100 MSisfEdge Positive Dimming Operation Waveforms Max Dimming Angle Vin 120Vac C1 Vin C2 Vcs C4 lin Figure 18 LeCroy Me onn 200 mVidiv en 5 00 ms div Auto 600 0 mV 500 mA ofst 5 00 MS 100 5 5 1 Edge iti Figure 19 Dimming Operation Waveforms 90 Dimming Angle 120V C1 Vin C2 Vcs C4 lin 2012 Fairchild Semiconductor Corporation 14 7730 L20L008A Rev 0 0 4 p FAIRCHILD resumen tes cpm mmt SEMICONDUCTOR ww fairchilds emi m LeCroy rigger 5 00 ms div Auto 80 mA 5 00 100MS s Edge Positive EDET 600 0 500 ofst Figure 20 Dimming Operation Waveforms Min Dimming Angle Viu 120V Ac C1 Vin C2 Vcs C4 lin Output current is controlled by dimming function when rotating dimmer switch as in the dimming curve in Figure 21 The dimming control block in FL7730 smoothly changes regulated output current by detecting dimming angle 400 350 300 250 200 150 LED Current mA 100
9. FL7730 L20L008A Rev 0 0 4 p 951 FAIRCHILD SEMICONDUCTOR 4 Printed Circuit Board Dimension mm 62 5 8 97 Figure 8 Printed PCB Top Side Figure 9 Printed PCB Bottom Side 2012 Fairchild Semiconductor Corporation 7 7730 1201008 Rev 0 0 4 5 01 1 MB8S 4 7mH gt 0000 560 0 5W C 330n gt F 1A 250V D 1N4003 e Q3 FL7730 C N2 47u Dim VDD VS Ris Q4 100 FQUS5N60C COMI GATE GND CS 4 7nF L 2000 1 20 FAIRCHILD SEMICONDUCTOR 5 Schematic 7730 L20L008A Rev 0 0 4 Schematic of Evaluation Board Figure 10 2012 Fairchild Semiconductor Corporation FAIRCHILD Remensi SEMICONDUCTOR 4 a f ww fairchildsemi com 2 Bill of Materials 1 Part 1 rowo s S o Lx m scars aso Resa s m vao _ RC1206JR 0751KL 1 51kO SMD Resistor 3216 Yageo 2012 Fairchild Semiconductor Corporation 9 FEBFL7730 L20L008A Rev 0 0 4 m S E NO U m A o lt N A oo O o p 951 FAIRCHILD ww fairchildsemi com SEMICONDUCTOR EO 2 2 Transformer and Winding
10. IRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY FUNCTION OR DESIGN FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS NOR THE RIGHTS OF OTHERS LIFE SUPPORT POLICY FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which a 2 A critical component is any component of a life support device or are intended for surgical implant into the body or b support or system whose failure to perform can be reasonably expected to sustain life or c whose failure to perform when properly used in cause the failure of the life support device or system or to affect its accordance with instructions for use provided in the labeling can be safety or effectiveness reasonably expected to result in significant injury to the user ANTI COUNTERFEITING POLICY Fairchild Semiconductor Corporation s Anti Counterfeiting Policy Fairchild s Anti Counterfeiting Policy is also stated on our external website www fairchildsemi com under Sales Support Counterfeiting of semiconductor parts is a growing problem in the industry All manufacturer
11. OP 8 Package Available 2012 Fairchild Semiconductor Corporation 3 7730 1201008 Rev 0 0 4 p 951 FAIRCHILD a ww fairchilldsemi em SEMICONDUCTOR 1 3 Internal Block Diagram Shutdown Gate Driver TRIAC Dim Function Error Linear Frequency Amp Controller TRUECURRENT Calculation Figure 1 Internal Block Diagram 2012 Fairchild Semiconductor Corporation 4 FEBFL7730 L20L008A Rev 0 0 4 p 951 FAIRCHILD a eee SEMICONDUCTOR ww fairchildsemi com 2 General Specifications data in Table was measured at an ambient temperature of 25 C Table 1 Summary of Features and Performance for LED Lighting Bulb ae Note No Dimmer Connected Note Open Frame Condition Ta 25 C 2012 Fairchild Semiconductor Corporation FEBFL7730 L20L008A Rev 0 0 4 FAIRCHILD a ee ww fairchillds mi gam SEMICONDUCTOR 3 Photographs Figure 2 Top View of Evaluation Board Figure 3 Bottom View of Evaluation Board Dimensions 62 5mm L x 26 8mm W x 12 0 H Figure 4 Side View in Bulb Case Type 1 Figure 5 Bottom View in Bulb Case Type 1 Bulb Case Type 1 32mm Case Diameter x 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 x 44mm Case Depth 2012 Fairchild Semiconductor Corporation 6 FEB
12. Specifications RM6 PC47 Figure 11 Transformer Specifications 8 Construction Np2 3 4 00000000000000000000000000000000000000 Na 2 6 000000000000000000 Ns NS NS Npi 5 3 00000000000000000000000000000000000000 Figure 12 Transformer Winding Structure Table 2 Winding Specifications No winding Pmis n Wire __ Turns Winding Method _ if m s gt s ore _ Insulation t 0 025mm 2 Layer 7 Soni Wing Insulation Polyester Tape t 0 025 2 Layer kB Insulation Polyester Tape t 0 025mm 6 Layer Table3 Electrical Characteristics _ NNI L 2012 Fairchild Semiconductor Corporation 10 FEBFL7730 L20L008A Rev 0 0 4 FAIRCHILD Ea SEMICONDUCTOR ww fairchildsemi com 6 Performance of Evaluation Board 6 1 Startup Startup time is 0 8s There is no overshoot at output current and voltage in startup refer Ioyr and Vpp Vpp indicates a reflected output voltage LeCroy EL T lll i ul UN imebase 496ms Trigger BIS 50 0 Vidiv 5 00 Vidiv 200 mA div Roll 200msidivfStop 19 05 1 0 V offset 15 00 ofst 0 0 mA ofst 200MS 1 0MSisfEdge Positive 164 0 V Eun n 8 0 mA 723 803ms 762 96ms T
13. ent Output Voltage PF THD 360 21 70V 0 98 7 4 110 376 21 77V 0 96 9 5 120Vac 380mA 21 77 0 95 10 4 140Vac 386mA 21 79V 0 91 12 4 7730 L20L008A Rev 0 0 4 FAIRCHILD aa ee SEMICONDUCTOR 6 8 Operating Temperature Temperature of the all components on this board is less than 60 C Box 57 2 Circle 53 3 53 Startup Resistor 56 Transformer 5226 Resistor 56 FLIR Dist 0 5 Trefi 20 0 0 96 Figure 23 Board Temperature Top View 120 lo 380mA 50 6 Bottom of Circle Active Damper Max 47 2 751 C FL7730 5056 FLIR Dist 0 5 Trefl 20 0 0 96 Figure 24 Board Temperature Bottom View Vin 120Vac lo 380mA 2012 Fairchild Semiconductor Corporation 18 FEBFL7730 L20L008A Rev 0 0 4 FAIRCHILD SEMICONDUCTORS ww fairchildsemi com 6 9 EMI The all measurement was conducted in observance of CISPR22 criteria 60 EN 55022 Voltage on Mains Level in dBuV 30 20 10 150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M Frequency in Hz Figure 25 Results 110V 22V lout 380mA 2012 Fairchild Semiconductor Corporation 19 FEBFL7730 L20L008A Rev 0 0 4 p 951 FAIRCHILD
14. neral Description The FL7730 1s an active Power Factor Correction PFC controller using single stage flyback topology Dimming control with no flicker 1s implemented by an analog sensing method Primary side regulation and single stage topology reduce external components such as input bulk capacitor and feedback circuitry and minimize cost To improve good power factor and Total Harmonic Distortion THD constant on time control is utilized with internal error amplifier and a low bandwidth compensator Precise constant current control regulates accurate output current independent of input voltage and output voltage Operating frequency is proportionally changed by output voltage to guarantee DCM operation with higher efficiency FL7730 provides protections such as open LED short LED and over temperature protection 1 2 Features Compatible with Traditional TRIAC Control Cost Effective Solution without Input Bulk Capacitor and Feedback Circuitry Power Factor Correction PFC Accurate Constant Current CC Control ine Voltage Compensation for CC Control Linear Frequency Control for Better Efficiency and Simpler Design Open LED Protection Short LED Protection Cycle by Cycle Current Limiting Over Temperature Protection with Auto Restart ow Startup Current 20 Low Operating Current 5mA Frequency Hopping for EMI Under Voltage Lockout UVLO Gate Output Maximum Voltage Clamped at 18V S
15. s of semiconductor products are experiencing counterfeiting of their parts Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation substandard performance failed applications and increased cost of production and manufacturing delays Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts have full traceability meet Fairchild s quality standards for handling and storage and provide access to Fairchild s full range of up to date technical and product information Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources Fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors EXPORT COMPLIANCE STATEMENT These commodities technology or software were exported from the United States in accordance with the Export Administration
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