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? 2012 fairchild semiconductor corporation FEBFL7730_l20l008b ? rev.1.1.1 user guide for FEBFL7730_l20l008b dimmable led bulb at low line featured fairchild product: fl7730 direct questions or comments about this evaluation board to: ?worldwide direct support? fairchild semiconductor.com
? 2012 fairchild semiconductor corporation 2 FEBFL7730_l20l008b ? rev.1.1.1 table of contents 1. introduction .................................................................................................................. ............. 3 1.1. general description ........................................................................................................ 3 1.2. features ...................................................................................................................... .... 3 1.3. internal block diagram .................................................................................................. 4 2. general specifications ........................................................................................................ ...... 5 3. photographs.................................................................................................................... ........... 6 4. printed circuit board ......................................................................................................... ....... 7 5. schematic ..................................................................................................................... ............. 8 6. bill of materials ............................................................................................................. ........... 9 7. transformer and winding specifications ............................................................................... 11 8. performance of evaluation board ........................................................................................... 12 8.1. startup ....................................................................................................................... ... 12 8.2. operation waveforms .................................................................................................. 12 8.3. constant current regulation ........................................................................................ 13 8.4. open/short-led protections ....................................................................................... 14 8.5. dimming operation ...................................................................................................... 15 8.6. system efficiency ........................................................................................................ 18 8.7. power factor and total harmonic distortion .............................................................. 19 8.8. operating temperature ................................................................................................ 21 8.9. electromagnetic interference (emi) ............................................................................ 22 9. revision history .............................................................................................................. ....... 23
? 2012 fairchild semiconductor corporation 3 FEBFL7730_l20l008b ? rev.1.1.1 this FEBFL7730_l20l008b evalution board can be identified by the silkscreen marking fl7730 low line on the top side of the pcb. this user guide supports the evaluation board for the fl7730, FEBFL7730_l20l008b. this kit supersedes the FEBFL7730_l20l008a. the revised kit incorporates the next generation fl7730, which is redesigned for improved dimming performance . 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 or the evaluation board page http://www.fairchildsemi.com/p roducts/evaluationboards/ . 1. introduction this document describes the proposed solution for low-line voltage led ballast using the fl7730 primary-side regulator (psr) single-st age controller. the input voltage range is 90v rms ? 140v rms and there is one dc output with a constant current of 380ma at 22v max . this document contains general desc ription of fl7730, the power supply specification, schematic, bill of materials, and the typical operating characteristics. 1.1. general description the fl7730 is an active power factor correc tion (pfc) controller using single-stage flyback topology. dimming control with no flicker is 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 (t hd), constant on-time control is utilized with internal error amplifier and a low-ba ndwidth 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. fl 7730 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 ? line 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 ? low startup current: 20 a ? low operating current: 5ma ? v dd under-voltage lockout (uvlo) ? gate output maximum voltage clamped at 18v ? sop-8 package available
? 2012 fairchild semiconductor corporation 4 FEBFL7730_l20l008b ? rev.1.1.1 1.3. internal block diagram figure 1. internal block diagram
? 2012 fairchild semiconductor corporation 5 FEBFL7730_l20l008b ? rev.1.1.1 2. general specifications all data in table 1 was measured at an ambient temperature of 25c. table 1. summary of features and performance for led lighting bulb description symbol value comments input voltage v in , min 90v minimum input voltage v in , max 140v maximum input voltage v in,nominal 110~120v nominal input voltage input frequency f in 50-60hz line frequency output voltage current v out,min 10v minimum output voltage v out,max 28v maximum output voltage v out,nominal 22v nominal output voltage i out , nominal 380ma nominal output current i out,ripple 65ma output current ripple cc deviation <3.9% line input voltage change:90~140v ac <2.1% output voltage change:10~28v efficiency note: no dimmer connected eff 90vac 80.7% efficiency at 90v ac line input voltage eff 110vac 82.2% efficiency at 110v ac line input voltage eff 120vac 82.5% efficiency at 120v ac line input voltage eff 140vac 82.9% efficiency at 140v ac line input voltage pf / thd note: no dimmer connected pf / thd 90vac 0.98 / 7.4% pf / thd at 90v ac line input voltage pf / thd 110vac 0.96 / 9.5% pf / thd at 110v ac line input voltage pf / thd 120vac 0.95 / 10.4% pf / thd at 120v ac line input voltage pf / thd 140vac 0.91 / 12.4% pf / thd at 140 v ac line input voltage temperature note: open-frame condition (t a =25c ) t fl7730 50oc fl7730 temperature t mosfet 53oc primary mosfet temperature t diode 47oc secondary diode temperature t transformer 52oc transformer temperature t damper 57oc active damper temperature t str.resistor 56oc startup resistor temperature
? 2012 fairchild semiconductor corporation 6 FEBFL7730_l20l008b ? rev.1.1.1 3. photographs figure 2. top view of evaluation board figure 3. bottom view of evaluation board dimensions: 62.5mm (l) 26.8mm (w) 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) 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 7 FEBFL7730_l20l008b ? rev.1.1.1 4. printed circuit board figure 8. printed pcb, top side figure 9. printed pcb, bottom side
? 2012 fairchild semiconductor corporation 8 FEBFL7730_l20l008b ? rev.1.1.1 5. schematic figure 10. schematic of evaluation board
? 2012 fairchild semiconductor corporation 9 FEBFL7730_l20l008b ? rev.1.1.1 6. bill of materials item no. part reference part number qty. description manufacturer 1 q1 mb8s 1 bridge diode fairchild semiconductor 2 q2 fqn1n50c 1 1a / 500v active damper mosfet fairchild semiconductor 3 q3 fl7730my_f116 1 main controller fairchild semiconductor 4 q4 fqu5n60c 1 5a / 600v main switch fairchild semiconductor 5 f1 ss-5-1a 1 1a / 250v fuse bussmann 6 l1, l2 r06472kt00 2 4.7mh filter inductor bosung 7 d1 es1j 1 1a / 600v diode fairchild semiconductor 8 d2 1n5241 1 11v zener diode fairchild semiconductor 9 d3 1n4003 1 1a / 200v diode fairchild semiconductor 10 d4 rs1m 1 1a / 1000v diode fairchild semiconductor 11 d5 es3d 1 3a / 200v fast rectifier fairchild semiconductor 12 c1, c2 mpe 400v334k 14s 1 330nf / 400v film capacitor sungho 13 c3 c0805c104k3ractu 1 100nf / 25v smd capacitor 2012 kemet 14 c4 c1206c335k3pactu 1 3.3f / 25v smd capacitor 3216 kemet 15 c5 c0805c100m3gactu 1 10pf / 25v smd capacitor 2012 kemet 16 c6 c2012y5v1e225z 1 2.2f / 25v smd capacitor 2012 tdk 17 c7 kmg 47f / 35v 1 47f / 35v electrolytic capacitor samyoung 18 c8 c1206c103kdractu 1 10nf / 1kv smd capacitor 3216 kemet 19 c9 scfz2e472m10bw 1 4.7nf / 250v y-capacitor samwha 20 c10 kmg 330f / 35v 1 330f / 35v electrolytic capacitor samyoung 21 c11 rm 1000f / 35v 1 1000f / 35v electrolytic capacitor samwha 22 r1 sr03700005600kr500 1 560 ? / 0.5w metal resistor vishay 23 r2 rnf12jtd100r 1 100 ? / 0.5w metal resistor stackpole electrical 24 r3 rc1206jr-0720kl 1 20k ? smd resistor 3216 yageo 25 r4 rc1206jr-071ml 1 1m ? smd resistor 3216 yageo 26 r5 rc0805jr-0775kl 1 75k ? smd resistor 2012 yageo 27 r6 rc0805jr-0762kl 1 62k ? smd resistor 2012 yageo 28 r7 rc0805jr-070r0l 1 0 ? smd resistor 2012 yageo 29 r8 rc0805jr-07150kl 1 150k ? smd resistor 2012 yageo 30 r9 rc0805jr-0720kl 1 20k ? smd resistor 2012 yageo 31 r10 rnf12gtd100k 1 100k ? / 0.5w metal resistor stackpole electrical 32 r11, r12 rc1206jr-07510kl 2 510k ? smd resistor 3216 yageo 33 r13 rc0805jr-0710rl 1 10 ? smd resistor 2012 yageo
? 2012 fairchild semiconductor corporation 10 FEBFL7730_l20l008b ? rev.1.1.1 bill of materials (continued) item no. part reference part number qty. description manufacturer 34 r14 rc1206jr-071r2l 1 1.2 ? smd resistor 3216 yageo 35 r15 rc1206fr-071rl 1 1.0 ? smd resistor 3216 yageo 36 r16 rc0805jr-07200rl 1 200 ? smd resistor 2012 yageo 37 r17 rc1206jr-0751kl 1 51k ? smd resistor 3216 yageo
? 2012 fairchild semiconductor corporation 11 FEBFL7730_l20l008b ? rev.1.1.1 7. transformer and winding specifications rm6 (pc47) 5 n p1 3 4 6 n a 2 ns+ n s ns- n p2 figure 11. transformer specifications & construction figure 12. transformer winding structure table 2. winding specifications no. winding pin (s ? f) wire turns winding method 1 n p1 5 ? 3 0.13 38 ts solenoid winding 2 insulation: polyester tape t = 0.025mm, 2-layer 3 n s ns- ? ns+ 0.3 (tiw) 24 ts solenoid winding 4 insulation: polyester tape t = 0.025mm, 2-layer 5 n a 2 ? 6 0.13 18 ts solenoid winding 6 insulation: polyester tape t = 0.025mm, 2-layer 7 n p2 3 ? 4 0.13 38 ts solenoid winding 8 insulation : polyester tape t = 0.025mm, 6-layer table 3. electrical characteristics pin specification remark inductance 1 ? 2 1mh 10% 50khz, 1v leakage 1 ? 2 8h 50khz, 1v short all output pins
? 2012 fairchild semiconductor corporation 12 FEBFL7730_l20l008b ? rev.1.1.1 8. performance of evaluation board 8.1. startup startup time is 0.8s. there is no overshoot at output current and voltage in startup sequence ( refer i out and v dd waveform. v dd indicates a reflected output voltage ). figure 13. startup ? v in [110v ac ], c1 [v in ], c2 [v cs ] c3 [v dd ], c4,[i out ], (no dimmer connected) 8.2. 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. figure 14. operation waveforms ? v o [22v], i o [380ma], c1 [v cs ], c3, [v in ], c4 [i out ] v in = 120v ac v in = 140v ac v in = 90v ac v in = 110v ac
? 2012 fairchild semiconductor corporation 13 FEBFL7730_l20l008b ? rev.1.1.1 8.3. 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%. 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 90v ac / 60hz 352ma 365ma 1.8% 110v ac / 60hz 368ma 384ma 2.1% 120v ac / 60hz 374ma 388ma 1.8% 140v ac / 60hz 381ma 395ma 1.8% table 5. constant current regulation by line voltage change (90~140v ac ) output voltage 90v ac 110v ac 120v ac 140v ac tolerance 20v 355ma 372ma 377ma 383ma 3.8% 22v 360ma 372ma 377ma 386ma 3.5% 24v 357ma 374ma 383ma 386ma 3.9% 0 5 10 15 20 25 30 35 0 100 200 300 400 500 90vac 110vac 120vac 140vac ovp v out [v ] output current [ma]
? 2012 fairchild semiconductor corporation 14 FEBFL7730_l20l008b ? rev.1.1.1 8.4. open/short-led protections in short-led condition, the oc p level is reduced from 0.7v to 0.2v because the fl7730 lowers the ocp level when v s voltage is 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. figure 16. short-led condition ? v in [110v ac ], c1 [v cs ], c2 [v dd ], c3 [v in ], c4 [i out ] in open-led condition, output voltage is limited around 32v by ovp in v dd . the output over-voltage protection level can be controlle d by turn ratio of auxiliary and secondary windings. figure 17. open-led condition ? v in [110v ac ], c1 [v cs ], c2 [v dd ], c3 [v in ]
? 2012 fairchild semiconductor corporation 15 FEBFL7730_l20l008b ? rev.1.1.1 8.5. dimming operation dimming operation waveforms are shown in figure 18 - figure 20. active damper, rc bleeder, and dimming control in fl7730 im plement flicker-free dimming operation. spike current at dimmer firing is less than 1.2a. figure 18. dimming operation waveforms: max. dimming angle, v in [120v ac ], c1 [v in ], c2 [v cs ], c4 [i in ] figure 19. dimming operation waveforms: 90 o dimming angle, v in [120v ac ] ,c1 [v in ], c2 [v cs ], c4 [i in ]
? 2012 fairchild semiconductor corporation 16 FEBFL7730_l20l008b ? rev.1.1.1 figure 20. dimming operation waveforms ? min. dimming angle, v in [120v ac ], c1 [v in ], c2 [v cs ], c4 [i in ] output current is controlled by dimming f unction 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. figure 21. dimming curve (effective rms input volt age vs. output current) ? line voltage [120v ac ]
? 2012 fairchild semiconductor corporation 17 FEBFL7730_l20l008b ? rev.1.1.1 table 6. triac dimmer compatibility manufacturer dimmer condition maximum current minimum current flicker lutron s-600p-wh 120v / 60hz 330ma 40ma (12%) no lutron cn-600p-wh 120v / 60hz 328ma 11ma (3%) no lutron gl-600h 120v / 60hz 365ma 8ma (2%) no lutron tg-603pgh-wh 120v / 60hz 252ma 12ma (5%) no lutron tg-600ph-wh 120v / 60hz 333ma 14ma (4%) no lutron lg-600p 120v / 60hz 327ma 3ma (1%) no lutron ctcl-153pd 120v / 60hz 320ma 58ma (18%) no lutron s-600-wh 120v / 60hz 324ma 0ma (0%) no lutron dv-600p-wh 120v / 60hz 323ma 0ma (0%) no lutron dv-603pg-wh 120v / 60hz 260ma 3ma (1%) no lutron dv-10p 120v / 60hz 334ma 28ma (8%) no lutron dvlv-600p 120v / 60hz 316ma 4ma (1%) no lutron ay-600p-wh 120v / 60hz 329ma 8ma (2%) no lutron d-600ph-dk 120v / 60hz 309ma 0ma (0%) no lutron q-600p-wh 120v / 60hz 333ma 21ma (6%) no lutron slv-600p 120v / 60hz 330ma 7ma (2%) no lutron glt05 120v / 60hz 316ma 22ma (7%) no leviton 6633-pl 120v / 60hz 383ma 11ma (3%) no leviton 6683 120v / 60hz 384ma 0ma (0%) no leviton ip106 120v / 60hz 380ma 36ma (9.5%) no leviton 1c4005 120v / 60hz 344ma 0ma (0%) no leviton 6631-lw 120v / 60hz 340ma 0ma (0%) no legrand f 165h 120v / 60hz 344ma 3ma (0.9%) no the fl7703 low-line evaluation board demonstrates good dimmer compatibility without flicker. minimum led current is less than 5% for most dimmers.
? 2012 fairchild semiconductor corporation 18 FEBFL7730_l20l008b ? rev.1.1.1 8.6. system efficiency power efficiency is 80.7 ~ 82.9% in 90 ~ 140v ac input voltage range. figure 22. power efficiency (input voltage vs. efficiency) table 7. system efficiency input voltage input power output current output voltage output power efficiency 90v ac 9.68w 360ma 21.70v 7.81w 80.7% 110v ac 9.96w 376ma 21.77v 8.19w 82.2% 120v ac 10.02w 380ma 21.77v 8.27w 82.5% 140v ac 10.15w 386ma 21.79v 8.41w 82.9% 70 72 74 76 78 80 82 84 86 88 90 90vac 110vac 120vac 140vac input voltage eff. [%]
? 2012 fairchild semiconductor corpor ation 19 FEBFL7730_l20l008b ? rev.1.1.1 8.7. power factor and total harmonic distortion 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. figure 23. power factor & total harmonic distortion (50hz) figure 24. power factor & total harmonic distortion (60hz) pf thd input voltage input voltage pf thd
? 2012 fairchild semiconductor corporation 20 FEBFL7730_l20l008b ? rev.1.1.1 table 8. power factor and total harmonic distortion input voltage output current output voltage frequency pf thd 90v ac 360ma 21.70v 50hz 0.99 7.1% 60hz 0.98 7.4% 110v ac 376ma 21.77v 50hz 0.97 9.4% 60hz 0.96 9.5% 120v ac 380ma 21.77v 50hz 0.96 10.2% 60hz 0.95 10.4% 140v ac 386ma 21.79v 50hz 0.92 12.1% 60hz 0.91 12.4%
? 2012 fairchild semiconductor corporation 21 FEBFL7730_l20l008b ? rev.1.1.1 8.8. operating temperature temperature of all the components on this board is less than 60 o c. figure 25. board temperature - top view, v in [120v ac ], i o [380ma] figure 26. board temperature - bottom view, v in [120v ac ], i o [380ma]
? 2012 fairchild semiconductor corporation 22 FEBFL7730_l20l008b ? rev.1.1.1 8.9. electromagnetic interference (emi) the all measurement was conducted in observance of cispr22 criteria. figure 27. emi results ? v in [110v], v out [22v], i out [380ma]
? 2012 fairchild semiconductor corporation 23 FEBFL7730_l20l008b ? rev.1.1.1 9. revision history rev. date description 1.0.0. oct. 2011. initial release 1.1.0 jul. 2012. manufacturer & part number are added in bom fl7730 is changed to fl7730my_f116 (no frequency hopping) dimmer compatibility table is updated pf/thd at 50hz is added emi test result is updated 1.1.1 aug. 2012. updating to match new naming conventions 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? g uide. 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 neit her the board nor this user?s guide constitute a sales con tract or create any kind of warranty, whether express or implied, as to the applications or products involved. fairchil d warrantees that its products me et 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 reli ability, function, or design. either the applicable sales contract signed by fairc hild and buyer or, if no contract exists, fairchild?s standard terms and conditions on the back of fairchild invoic es, govern the terms of sale of the p roducts described herein. disclaimer fairchild 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 licens e under its patent rights, nor the rights of others. life support policy fairchild?s products are not authorized for use as criti cal components in life su pport devices or systems without the express written approval of the presid ent of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. anti-counterfeiting policy fairchild semiconductor corporation's anti-counterfeiting policy. fa irchild'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 th e industry. all manufacturers of semiconductor products are exp eriencing 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 st rong measures to protect ourselves and our customers from the proliferation of counterfeit parts. fairchild st rongly encourages customers to pur chase 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 fairch ild's quality standards for handling and storage and provide access to fairchild's full range of up-to-date technical and product information. fairchild an d our authorized distributors will stand behind all warranties and will appropriate ly address any warranty issues that may arise. fairchild will not provide any warranty coverage or other assistance for parts bough t from unauthorized sources. fairchild is committed to combat this global problem a nd 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 un ited states in accordance with the export administration re gulations for the ultimate destination listed on the commercial invoic e. 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.
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