User Guide for FEBFL7734_L55H008A Evaluation Board
Contents
1. 64 ac Output Current mA Figure 13 Constant Current Regulation Table 5 Constant Current Regulation by Output Voltage Change 21 27 V Input Voltage Min Current mA Max Current mA Tolerance 198 Vac 60 Hz 360 361 0 14 230 Vac 60 Hz 357 361 0 56 264 Vac 60 Hz 357 360 0 42 Table 6 Constant Current Regulation by Line Voltage Change 198 264 Vac Output Voltage 198 Vac 50 Hz 230 Vac 50 Hz 264 Vac 50 Hz Tolerance 27 360 361 360 0 14 24 V 360 mA 360 mA 359 mA 0 14 21 V 358 mA 357 mA 357 mA 0 14 2015 Fairchild Semiconductor Corporation FEBFL7734_L55HOO8A Rev 1 0 FAIRCHILD 8 4 Short Open LED Protections Figure 14 shows a waveform for the protection and AR operation when the LED 15 shorted Once the LED short occurs SLP is triggered and the controller then shuts down the switching MOSFET After 4 s the Startup sequence reinitiates This behavior lasts until the fault condition is removed Systems can restart automatically when normal condition resumes at least 4 seconds 100 V div CH3 10 V div Vour 5 V div Time Scale 1 s div Load 8 series connected LEDs LeCroy Auto Restart LED short imebase 3 2005 Roll 1 00 E Stop 38V 500MS Positive 10 0 Vidiv 5 00 Vidiv 0 00 offset 15 02. Voltage Efficiency 83 9 Efficiency at 230 Vac Input Voltage 83 4 Efficiency at 264 Vac Input Voltage PF THDigevac 0 97 9 996 PF THD at 198 Vac Input Voltage PF THD PF 0 96 11 4 PF THD at 230 Vac Input Voltage PF THD s4vac 0 95 13 7 PF THD at 264 Vac Input Voltage Open Frame Condition FL7734MX 66 9 C Ta 25 FL7734MX Temperature Wen 63 1 Primary MOSFET Temperature Temperature Secondary 66 8 C Secondary Diode Temperature Transformer 66 1 C Transformer Temperature 2015 Fairchild Semiconductor Corporation 5 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 3 Evaluation Board Photographs Dimensions 62 1 mm L x 28 mm W x 22 mm Figure 2 Top View Figure 3 Bottom View 2015 Fairchild Semiconductor Corporation 6 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 4 Evaluation Board Printed Circuit Board PCB Figure 4 Top Pattern mm Figure 5 Bottom Pattern mm 2015 Fairchild Semiconductor Corporation 7 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD BD1 MB6S F1 R1 p 4 7k C1 MOV1 4 68n 500V SMD D C18 Q3 SE 110k 100p FQN1N50C R8 62 1 22w 35V R24 w 330k VS R6 TCIC PG 240k 0 FQU5N60C R22 MOD GATE 18k HOLD CS C14 DIM BIAS FB BLD C17 4 7n 1N4148WS R32 D2 4 882 S1J R26 R25 Q4 ES 8 2k 8 2k 2N7002K 280k e C10 R19 10p 33k VON 5 Evaluation Board Schematic Schematic Fi
3. 0 V ofst Figure 14 Vin 230 Vac 50 Hz 2015 Fairchild Semiconductor Corporation 15 FEBFL7734_L55H008A Rev 1 0 FAIRCHILD Figure 15 shows a waveform for the protection and AR operation when the LED 15 opened Once the LED load is disconnected OVP or Vpp OVP is triggered and the controller then shuts down the switching MOSFET After 4s Startup sequence reinitiates This behavior lasts until the fault condition is removed Systems can restart automatically when normal condition resumes at least 4 seconds 100 V div CH3 10 V div CHA Vour 5 V div Time Scale 1 s div Load 8 series connected LEDs LeCroy LED Open ETT 10 0 Vidiv 5 00 Vidiv Roll Stop 38 V 0 00 V offset 15 00 ofst 5 00 500 5575 Positive Figure 15 Vin 230 50 Hz If the LED load 15 re connected after an open LED condition the output capacitor is quickly discharged through the LED load and the inrush current due to the discharge could destroy LED load 2015 Fairchild Semiconductor Corporation 16 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 5 Secondary Diode Sensing Resistor Short Protection Figure 16 shows a waveform for the protection operation when the secondary diode 15 shorted Vcs is monitored during the gate turn on time to detect over current except for LEB time Once goes higher than Vcsocp 1 8 V after the LEB time OCP is trigger
4. 2KL 8 2 k SMD Resistor 1608 F 1 16 W R26 RCO0603 JR 078R2KL 18 2 k SMD Resistor 1608 F 1 16 W R27 0805 JR 07110KL 110 SMD Resistor 2012 F 1 4 W R28 RC1206 JR 072ML 2M SMD Resistor 3216 F 1 4 W R29 RCO0805 JR 07100RL 100 SMD Resistor 2012 1 4 W R30 0805 JR 0724KL 24 k SMD Resistor 2012 F 1 4 W R31 0603 JR 0727KL 27 k SMD Resistor 1608 F 1 16 W R32 0805 JR 078R2L 8 2 O SMD Resistor 2012 F 1 4 W C C1206V683KCRACTU 68 nF 500 V SMD Capacitor 3216 X7R D D N 15 16 17 18 19 C MPE 630V333 nF 630 V 12 5 x 10 0 x 5 0 mm C3 MPE 630V683 MPE 68 nF 630 V 12 5 x 10 0 x 5 0 mm C C C1206V473KCRACTU 47 nF 500 V SMD 3216 X7R C1206C222KDRACTU 2 2 nF 1 kV SMD Capacitor 3216 IO IO NI IO IO IO IO I D OIN oO BR Wy M CH 2015 Fairchild Semiconductor Corporation 9 Metal Oxide Film Resistor RSD Type J 4 7 W R Forming Metal OxideFilm Resistor RSD Type J 500 2 W R Forming Bussmann Samwha Fairchild ABC ABC Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Yageo Kemet Sungho Electronics Sungho Electronics Kemet Kemet FEBFL7734 55 008 Rev 1 0 FAIRCHILD OM Continued Part Refere
5. 59 MOSFET 58 3 Secondary diode 55 3 Dist 1 0 Trefl 20 0 0 95 14 11 21 09 32 Dist 1 0 Trefl 20 0 0 95 14 11 21 09 25 Figure 26 Non Dimming Mode Vin 230 Vac Figure 27 Non Dimming Mode Vin 230 Vac Top nop Bottom Damper resistor 65 6 FL7734MX 64 4 Transformer 66 1 Dei 7 Bleeding MOSFET 71 1 63 1 66 8 Dist 1 0 Trefl 20 0 2 2 0 95 14 11 21 09 50 Dist 1 0 Trefl 20 0 2 0 95 14 11 21 11 25 Figure 28 Dimming Mode 230 Vac Figure 29 Dimming Mode Viuz230 Vac 2015 Fairchild Semiconductor Corporation 25 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 10 Electromagnetic Interference EMI All measurements were conducted in observance of EN55022 criteria The results were measured using rated LED loads after 60 minutes burn in EMI Scan 3 Frecuency Lit E List wih 244 2 System d NC ege 107 0 D D D D 4 9k 20 30 50 100k 200 300 500 1M 2M 3M 5M 10 20 30M Frequency in Figure 30 Vin 230Vac Live Sca 3 Frequency Lit Feesqaenieg List lt 9 Graphics gt 2 T Local 20 30 100k 200 300 500 2M SM 10M 20 30M FE foating Frequency in Hz C garded Figure 31 Vin 230 Vac Neutral 2015 Fairchild Semiconductor Corporation 26 FEBFL7734 L55H008A Rev 1 0
6. FAIRCHILD 9 Revision History 1 0 0 Feb 2015 Initial Release 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 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 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 LICENSE UNDER ITS PATENT RIGHTS NOR THE RIGHTS OF OTHERS LIFE SUPPORT POLICY FAIRCH
7. FAIRCHILD User Guide for FEBFL7734 L55H008A Evaluation Board 8 6 W LED Driver at High Line Featured Fairchild Product FL7734MX Direct questions or comments about this evaluation board to Worldwide Direct Support Fairchild Semiconductor com 2015 Fairchild Semiconductor Corporation 1 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD Table of Contents I Intr OC ROA RE ____ EM 3 1 1 General Description of 773 3 1 2 Controller Features lt n nnnnnncanacannsanacanasanacseasanncasacananaeaeanacasanananaes 3 1 3 Controller Internal Block 277 4 2 Evaluation Board Specfcatnons 5 3 Evaluation Board Photographs 6 4 Evaluation Board Printed Circuit Board DCH I 5 o S shematic E 8 6 Evaluation Board Bill of Materials 9 7 Trai hic NE cc 2 11 9 ormance EE LLL RR aao 12 Doll ooo 12 Su eent ern avelorms eee 0 13 Manu Regulation PEERS 14 se pen LED Protection emm s 15 8 5 Secondary Diode Sensing
8. ILD 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 are 2 critical component is any component of a life support device or intended for surgical implant into the body or b support or sustain system whose failure to perform can be reasonably expected to life or c whose failure to perform when properly used in accordance cause the failure of the life support device or system or to affect its with instructions for use provided in the labeling can be reasonably safety or effectiveness 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 manufacturers 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 prolifer
9. QU5N60C FQN1N50C 2N7002K FL7734MX 4 HMG RS1M Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild Fairchild C1 201 202 Q1 Q2 Q3 Q4 U1 2 e 46 ER ES 2015 Fairchild Semiconductor Corporation 10 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 7 Transformer Design Figure 7 RM6 PC47 1 3 Transformer Bobbin Structure and Pin Configuration Np2 6 2 0000000000090000009000090000909000000 Na2 5 3 2 _ 8996990999099090990900 __ gt 6908 000088 Ns 600606000006 rap 1 4 5 900000000000000000000 Neal 6 90000000000000000000000000000000000000 Figure8 Transformer Winding Structure Table 2 Winding Specifications No Winding Pin S gt F Wire Turns Winding Method 1 1 gt 6 0 139 73 Ts Solenoid Winding 2 Insulation Polyester t 0 025 mm 2 Layer 3 435 0 139 20 Ts Solenoid Winding 4 Insulation Polyester t 0 025 mm 2 Layer 5 NS gt NS 0 2 TIW 44 15 Solenoid Winding 6 Insulation Polyester Tape t 0 025 mm 2 Layer 7 52 3 0 13 20 15 Solenoid Winding 8 Insulation Polyester Tape t 0 025 mm 2 Layer 9 622 0 139 51 Ts Solenoid winding 10 Insulation Polyester Tape t 0 025 mm 2 Layer Table3 Electrical Characteristics P
10. Resistor Short Protection 17 SiO JEC 19 8 7 Power Factor amp Total Harmonic Distortion THD 20 Operation BEER DD 21 Temperature ERR esee 25 Interference _ 26 AS 27 2015 Fairchild Semiconductor Corporation 2 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD This user guide supports the evaluation board for the FL7734MX It should be used in conjunction with the FL7734MX 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 a high performance phase cut dimming LED driver solution with excellent dimmer compatibility The input voltage range of the LED driver board is 198 Vrms 264 Vrms and there is one DC output with a constant current of 360 mA at 24 V Also in this document is a general description of the FL7734MX the power supply solution specification schematic bill of materials and typical operating characteristics 1 1 General Description of FL7734MX The FL7734 is a highly integrated PWM controller with adva
11. ation 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 2015 Fairchild Semiconductor Corporation 27 FEBFL7734 L55H008A Rev 1 0
12. e 2601 Edge Positive 2015 Fairchild Semiconductor Corporation 22 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD Figure 24 shows a dimming curve which is obtained by rotating the dimmer switch Regardless of input line voltage 10 variation LED current is constantly regulated from 180 to 130 dimmer phase angle When the phase angle is below 130 LED current decreases linearly according to internal dimming reference modulation FL7734MX dimming control method can meet NEMA SSL 7A specification Figure 25 indicates the maximum and minimum dimmed output range as specified by NEMA SSL TA 2 198 Allowable range for maximum LLE light 22 e MLO output i measured H 230Vac 264 minimum LLE light output LED current mA F 71 RMLO measured 0 10 20 30 40 50 60 70 80 90 100110120130140 150160170180 Phase cut Angle Degree Figure 24 Dimming Curve Light Output lumens MLO 10 MLO f ABowable range for measured maximum LLE fight MLO 25 Allowable range for LLE light output MLO 70 measured 3 4042 Conduction Angle degrees Dimmer Minimum Figure 25 NEMA SSL 7A Specification 2015 Fairchild Semiconductor Corporation 23 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD Table 9 demonstrates that FL7734MX evaluation board has excellent dimmer compatibility without flicker and the minimum output current can be less t
13. ed and the controller then shuts down the switching MOSFET Ipeak amplitude can be adjusted by using different magnetizing inductance 100 V div CH2 Ves 500 mV div CH3 10 V div Time Scale 10 ms div Load 8 series connected LEDs LeCroy e 7 econdary diode short 4 4 A 4 UU y em mu Minimum turn on time TS base 20 0 500 mv 10 0 V 100 V 500 10 0 ES EO Stop 62V 1 50 30 0 V 20 0 us 20 0 us 10 0MS 1 00 MS s Dropout Pos Figure 16 Vin 230 Vac 50 Hz After 4 s startup operation starts again This behavior lasts until the fault condition is removed Systems can restart automatically when normal condition resumes at least 4 seconds 2015 Fairchild Semiconductor Corporation 17 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD Figure 17 shows a waveform for the protection operation when the sensing resistor 1s shorted If Vcs doesn t reach Vcs srsp 0 1 V within the initial two switching operations during the Startup period SRSP is triggered and the controller then shuts down the switching MOSFET Vm 100 V div CH2 Ves 500 mV div CH3 Noam 10 V div Time Scale 10 ms div Load 8 series connected LEDs LeCroy LY eel 3 100 V 100 100 V 10 0 V 10 0 ms dm Single 6 2 V 300 V 30 0 100 us 100 us 10 0 MS 100 IO Pos Figure 17 Vin 230 Vac 50 Hz After 4 s Startup operation
14. gure 6 FEBFL7734 55 008 Rev 1 0 2015 Fairchild Semiconductor Corporation FAIRCHILD 6 Evaluation Board Bill of Materials BOM Part Reference Part Number Description 1 D1 1 2 4 5 7 SS 5 1A SVC 471 D 07A MB6S MOR 1W TC 4 7K MOR 2W TC 500R RC0805JR 0722RL RC0603 JR 0751KL RC1206 JR 07240KL RC0603 JR 07240KL RC0805 JR 071KL R10 RC1206 JR 0743RL R11 RC1206 JR 07150RL R12 RC1206 JR 072ML R13 RC0805 JR 071KL R14 RC0805 JR 071R2L R15 0805 JR 073R3L R16 0805 JR 07160RL R17 RCO0805 JR 0715RL R18 RCO0603 JR 07280KL R19 RCO0603 JR 0733KL R20 RCO0603 JR 07110KL R21 RCO0603 JR 070ROL R22 0603 JR 0718KL 1 A 250 V Fuse Metal Oxide Varistor 600 V 0 5 A SOIC 4 D 0 JJ 22 SMD Resistor 2012 F 1 4 W 51kQ SMD Resistor 1608 F 1 16 W 240 kQ SMD Resistor 3216 F 1 4 W 240 kQ SMD Resistor 1608 F 1 16 W 1 SMD Resistor 2012 F 1 8 W 43 O SMD Resistor 3216 F 1 4 W 150 SMD Resistor 3216 F 1 4 W 2 MO SMD Resistor 3216 F 1 4 W 1 ko SMD Resistor 2012 F 1 8W 1R2 SMD Resistor 2012 1 4 W F 3R3 SMD Resistor 2012 1 4 W F 160 SMD Resistor 2012 F 1 4 W 15 0 SMD Resistor 2012 F 1 4 W 280 k SMD Resistor 1608 F 1 16 W 33 k SMD Resistor 1608 F 1 16 W 110 SMD Resistor 1608 F 1 16 W 0 O SMD Resistor 1608 F 1 16 W 18 k SMD Resistor 1608 F 1 16 W R23 RCO0603 JR 0768KL 68 SMD Resistor 1608 F 1 16 W R24 0603 JR 07330KL 330 SMD Resistor 1608 F 116 W R25 RCO0603 JR 078R
15. han 5 of the rated output current when evaluated with most dimmer It also operates well with both forward phase dimmer and reverse phase dimmer Table 9 Dimmer compatibility Max Current Min Current Condition mA Dimmer S N Z O 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz BUSCH BUSCH BUSCH GIRA JUNG JUNG JUNG JUNG PEHA GIRA Vossloh Schwabe KOPP MERTEN JIN HEUNG JIN HEUNG NANO Legrand DAESUNG CLIPSAL MERTEN EVERFLORISH GIRA 2247U 2250 2200 226200 225NVDE 91550 266GDE 244EX 436 2608 gt N C1 Z 172774 230 V 50 Hz 2 230 V 50 Hz 230 V 50 Hz 220 V 60 Hz 220 V 60 Hz 220 V 60 Hz 100 240 50 60 Hz 220 V 60 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 230 V 50 Hz 8033 5 2199 SA04003 SA04003 3004 SKD 500 0 488 69 SKD 500 32 450 577129 700 4210 59 Es P N CO m iN O O O O 2015 Fairchild Semiconductor Corporation 24 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 9 Operating Temperature Temperatures on all components on this board are less than 72 C The results were measured using the rated LED loads after 60 minutes burn in AIi 55 3 C A2 66 9 Bottom AM 1 58 3 Top 65 7 Transformer 65 9 FL7734MX 66 9 L 25 8 2110
16. ins Specifications Remark Inductance 6 2 1 7 mH 10 60 kHz 1 V Leakage 6 2 30 uH 60 kHz 1 V Short All Output Pins 2015 Fairchild Semiconductor Corporation FEBFL7734 55 008 Rev 1 0 FAIRCHILD 8 Evaluation Board Performance Table 4 Test Condition amp Equipment List Ambient Temperature 25 C AC Power Source PCR500L by Kikusui Power Analyzer PZ4000000 by Yokogawa Electronic Load PLZ303WH by KIKUSUI Test Equipment Multi Meter 2002 by KEITHLEY 45 by FLUKE Oscilloscope 104Xi by LeCroy Thermometer Thermal CAM SC640 by FLIR SYSTEMS LED EHP AXOSEL GTO1H P03 3 W by Everlight 8 1 Startup Figure 9 shows the overall startup performance at rated output load when no dimmer is connected The output load current starts flowing at least 0 06 s after the AC input power switch turns on for input voltage 230 Vac condition 100 V div CH2 Vis 10 V div CH3 Ves 500 mV div I gp 100 mA div Time Scale 100 ms div Load 8 series connected LEDs 0 075 gt 4 1 Li L 100 Vidiv 10 0 Vidiv 100 mA div 0 0 V offset 0 00 V offset 300 00 mA 384 220 2 47 2294 1 18 02 V f 3 21 mA 181 0 v Ay 18 24 V 740 LeCroy i 100 ms div 5 00 MS 5 0 MS s 1 11 3018ms AxX 72858ms K2 B1 5558ms 1 13 7254 H
17. k Circuitry Power Factor Correction in Non Dimming Mode Excellent CC Tolerance o 0 14 Over the range of 10 Input Line Voltage Variation Fast Startup utilizing Bleeding Circuit o lt 0 1 at Max Dimmer Phase Angle o 0 5satthe Min Dimmer Phase Angle High Reliability LED Short Open Protection Output Diode Short Protection Sensing Resistor Short Open Protection Over Voltage Protection OVP Under Voltage Lockout UVLO Over Temperature Protection OTP All Protections are Auto Restart Cycle by Cycle Current Limit 2015 Fairchild Semiconductor Corporation 3 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 1 3 Controller Internal Block Diagram MBLD BLD RBLD BIAS VDD Protections Short LED Protection Open LED Protection VDD Over Voltage Protection Thermal Shutdown Over Current Protection Sensing Resistor Short Protection A C t Auto recovery Mode Control Gate Driver Linear Frequency Controller Line Compensation PG SG CS 5 Figure 1 Block Diagram 2015 Fairchild Semiconductor Corporation 4 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 2 Evaluation Board Specifications Table 1 Evaluation Board Specifications for LED Lighting Bulb Voltage Maximum Output Voltage 360 mA Nominal Output Current Current lt 0 14 Line Input Voltage Change 198 264 Vac CC Deviation lt 0 56 Output Voltage Change 21 27 V 83 7 Efficiency at 198 Vac Input
18. nce Part Number Description 6 GRM1885C1E103JA01 10 16 V SMD Capacitor 1608 COG Murata KMG series 22 uF 35 V D5 X H11 105 C Electrolytic Capacitor GRM2192C1H682JA01 6 8 nF 50 V SMD Capacitor 2012 CH C0603C100K8GACTU 10 pF 10 V SMD Capacitor 1608 NPO GRM21A1X1H333JA39 33 nF 50 V SMD Capacitor 2012 SL GRM188B11A474KA61 470 nF 10 V SMD Capacitor 1608 B GRM1881X1E102JA012 1 10 V SMD Capacitor 1608 SL GRM185D71A105KE36 1 V SMD Capacitor 1608 X7T C8 KMG 22uF35V Samyoung C9 C10 C11 C13 C14 C15 Murata Kemet Murata Murata Murata Murata KMG Series 470 uF 35 V D10 X H12 5 105 C Electrolytic C16 470uF35V Capacitor Samyoung Samwha C17 SCF2bE472M14DW7 Capacitor Y Cap 4700 pF C18 GRM1882C1H101JA01 SMD Capacitor CH 100 pF 50 V Radial inductor 10 mH size 6 5 mm X H7 5 mm Molding Color Green Core HMG 40 Bobbin BRM6 716CPFR 1000 V 1 0 A SMA Package Fast Recovery Diode 600 V 1 0 A SMA Package General Purpose Diode 1000 V 1 0 A SMA Package Fast Recovery Diode 100 V 0 3 A SOD 323 Package General Purpose Diode 200 V 3 0 A SMB Package Schottky Rectifier 30 V Zener Diode SOD 323 6 2 V Zener Diode SOD 323 N ch Mosfet 500 V 3 A D Pak N ch Mosfet 600 V 5 A I Pak N ch Mosfet 500 V 0 38 A TO 92 N ch Mosfet 60 V 0 3 A SOT 23 Triac Dimmable LED Driver IC L1 06103 00 Bosung 1 D1 D2 D4 RS1M D56 1N4148WS S320 MM3Z30B MM3Z6V2B FDD3N50NZ F
19. nced Primary Side Regulation PSR technique to minimize components in low power LED lighting solutions Using the innovative TRUECURRENT technology for tight constant current control it enables design with Constant Current CC tolerance of less than 1 over universal line voltage range to meet stringent LED brightness requirements FL7734 operates with all types of phase cut dimmers Phase cut dimming is managed smoothly by Fairchild s proprietary constant input current control switching mode control and bleeding current control to achieve excellent dimmer compatibility without visible flicker The controller can automatically detect when there is no dimmer connected In non dimming mode the operating mode 15 set to optimize Power Factor PF and Total Harmonic Discharge THD by enabling linear frequency control and voltage mode control with Discontinuous Conduction Mode DCM operation An external bleeding MOSFET also acts as the high voltage startup circuit to implement fast startup and high system efficiency The FL7734 also provides powerful protections such as LED open short sensing resistor shorted and over temperature for high system reliability 1 2 Controller Features High Performance Excellent Dimmer Compatibility by Active Dimming Control Programmable Dimming Curve and Input Current Management Constant LED Current Regulation in Large Phase Angle Range Cost Effective Solution without Input Bulk Capacitor and Feedbac
20. starts again This behavior lasts until the fault condition 1s removed Systems can restart automatically when normal condition resumes at least 4 seconds 2015 Fairchild Semiconductor Corporation 18 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 6 Efficiency System efficiency is over 83 from 198 264 Vac The results were measured using actual rated LED loads 5 minutes after startup Input voltage Figure 18 System Efficiency Table 7 System Efficiency Output Output Output Input Voltage Input Power Voltage eftciency 198 Vac 60 Hz 10 32 W 0 360 A 8 640 W 83 70 230 Vac 60 Hz 10 26 W 0 359 8 616 W 83 94 264 Vac 60 Hz 10 33 0 359 8 616 W 83 40 2015 Fairchild Semiconductor Corporation 19 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 7 Power Factor PF amp Total Harmonic Distortion THD The FL7734MX evaluation board shows excellent THD performance less than 13 Power factor has enough margins from 0 9 The results were measured using actual rated LED loads 5 minutes after startup 14 00 Input voltage V Figure 19 Power Factor amp Total Harmonic Distortion Table8 Power Factor amp Total Harmonic Distortion Input Voltage Output Current Output Voltage Power Factor THD 198 Vac 60 Hz 0 360 A 24 V 0 97 9 996 230 Vac 60 Hz 0 359 A 24 V 0 96 11 4 264 Vac 60 Hz 0 359 A 24 V 0 95 13 7 2015 Fairchild Semiconduc
21. tor Corporation 20 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 8 Dimming Operation Figure 20 to Figure 22 shows the overall startup performance with dimmer conne at the rated output load The output load c sta rts flowing 0 36 s after the AC 1 witch turns on at small dimmer phase angle input voltage 230 condition CHI Vs 100V di CH2 gt OV di v LE EE en Time Sc Ke 100 ms div Load 8 s connected L H T e 7 m A 100 Vidiv 100 Lega 0 0 V offset 300 00 m MS 10MS sfEdge Positive e 20 Max Phase Angle Dimming i ag nm 000 set 10 0M8 10 MS s Ed Figure 21 Half Phase Angle Dimming FAIRCHILD gt 0 365 EE a C4 pon B imebase 600ms 100 Vidiv 10 0 200 ms div Stop 90 V 0 0 V offset 0 00 V offset 10 0 MS 5 0 2 7 Positive Figure 22 Min Phase Angle Dimming Figure 23 demonstrates the dimming operation with a dimmer connected at the rated output load Active DIM Control in FL7734MX provides stable dimmer operation and implements flicker free dimming operation Vw 100 V div CH2 CS 500 mV div CH4 in 100 mA div Time Scale Gees ms div Load 8 series LEDs LeCroy ATA 500 mVidiv 50 0 mA div 0 0 mV ofst 0 00 mA ofst Figure 23 Max Phase Angle Dimming Stop 90 V 12 5 w
22. z Figure 9 ViN 230 VAC 50 Hz 2015 Fairchild Semiconductor Corporation 12 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 2 Operation Waveforms Figure 10 through Figure 12 show AC input and output waveforms at rated output load CHI Vm 100 V div CH2 Ves 500 mV div CH3 In 100 mA div 200 mA div Time Scale 5 ms div Load 8 series connected LEDs x x 15 0 Trigger 319 base 15 0ms Trigger 100 Vidiv 500 mVidiv 100 mA div 5 00 ms div Stop 90 100 Vidiv 500 mVidiv 100 mA div 5 00 Stop 90 0 0 V offset 0 0 mV ofst 0 0 mA ofst 5 00MS 100MS sfEdge Positive 0 0 V offset 0 0 mV ofst 0 0 mA ofst 5 00MS 100MS s Edge Positive Figure 10 Vin 198 Vac 50 Hz Figure 11 Vin 230 Vac 50 Hz LeCroy FAT A base 15 0ms Trigger 9 100 Vidiv 500 mVidiv 100 mA div 5 00 ms di Stop 90 0 0 V offset 0 0 mV ofst 0 0 mA ofst 5 00 100MSisfEdge Positive Figure 12 Vin 264 Vac 50 Hz 2015 Fairchild Semiconductor Corporation 13 FEBFL7734 L55H008A Rev 1 0 FAIRCHILD 8 3 Constant Current Regulation Output current deviation over the output voltage ranges from 21 V to 27 V is less than 0 56 at each line voltage Line regulation at the rated output voltage 24 V is less than 0 14 The results were measured with Electronic Load CR Mode E vo ON R gt e 198Vac e 2 3
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