User Guide for FEBFL7701_L34U018A Evaluation Board
Contents
1. Measure P1treq C3 P2rms C2 P3rms C4 P4rms C3 P5 max C4 P6 min C4 P7 rms C1 P8 Tms C2 Measure P1treq C3 P2rms C2 P3rms C4 P4arms C3 P5 maxi C4 P6 min C4 P7 rms C 1 P8 Tms C2 value 21 5960 kHz 38 253 V 489 4 mV 156 58 V 698 mV 184 mV value 20 8435 kHz 38227 V 4814mV 156 19 V 658 mV 240mV status Ly C4 C4 Ca Ca Ca status 4 C4 Y C4 imebase 54dn cer Gm 20 0 ms div Stop 418 mV HOD EBD EJ Positive Ais 513ys X 52ys X2 461ys 1 X 192 kHz imebase 544 ma Trigger GEM EEN Stop 418mV 200MS 10MSis Edge Positive Ais 513ps X 52ys X2 46 1s WAX 192 kHz Trailing number s in the Mename were truncated to allow auto numbering Trailing number s in the filename were truncated to allow auto numbering Figure 17 Input Voltage 180 Vac Input Frequency Figure 18 Input Voltage 180 Vac Input Frequency 47 Hz CH2 Vout CH3 VpRAIN CH4 len 64 Hz CH2 Vout CH3 VpRAIN CH4 len e UUV YV VVV EE Measure P1treq C3 P2rms C2 P3rms C4 P4rms C3 P5max C4 P6 min C4 P7 rms C 1 P8 ms C2 D value 216050 kHz 38248 V 485 6 mV 197 23 V 692 mV 197 mV Measure Pttreq C3 P2rms C2 P3rms Ca P4rms C3 P5max C4 P6 min C4 P7 rms C 1 P8rms C2 status a 4 v v value 21 5500 kHz 38255 V 478 7 mV 196 66 V 654 mV 244 mV Timebase 544 Trigger OM status C4 C4 Ca Ca v 20 0 ms div Stop 418 mV 200MS 10MS s Edge Positive Xt 513ps AX 52ys X2 461ys WAX 192 kHz X12 513ps X 52ys2. 2012 Fairchild Semiconductor Corporation 22 FEBFL7701_L34U018A Rev 1 0 1 cM FAIRCHILD Te SEMICONDUCTOR ww fairchildsemi com 80 70 60 E Du EM EN 55022 Voltage on Mains OP EN 55022 Voltage ghiMains AV Level in dB4 ab uM MM TM 150k 300 400500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M Frequency in Hz Figure 38 Conducted Emission Line at 220 Vac Full Load 10 LED in Series 80 HA 60 LL LA EN 55022 Voltage on Mains QP EN 55022 Voltage Mains AM 507 n 403 SIEHT dt UI A I di LUV Vu D ll UI epp 20 Level in dB4 10 0 150k 300 400 500 800 1M 2M SM 4M 5M 6 8 10M 20M 30M Frequency in Hz Figure 39 Conducted Emission Neutral at 220 Vac Full Load 10 LED in Series 2012 Fairchild Semiconductor Corporation 23 FEBFL7701 L34U018A Rev 1 0 1 FAIRCHILD WaR ER ww fair idegni d SEMICONDUCTOR br a me oae eem July 2012 Initial Release September 2012 Part number update to FEBFL7701 L34U018A added spaces for UOM 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
3. X2 461ys WAX 192 kHz amp Trailing number s in the filename were truncated to allow auto numbering Trailing number s in the Mename were truncated to allow auto numbering Figure 19 Input Voltage 220 Vac Input Frequency Figure 20 Input Voltage 220 Vac Input Frequency 47 Hz CH2 Vour CH3 VpRAIN CH4 len 64 Hz CH2 Vout CH3 VpRAIN CH4 hen VV VV VV FU VV V P2rms C2 XP3rms C4 P4rms C3 P5max C4 P6 min C4 P7rms CT P8rms C2 Measure Pifreq C3 P2rms C2 P3rms C4 P4rms C3 P5max C4 P6 min C4 P7rms C1 38 178 V 482 1mV 24096 V 688 mv 197 mV value 213628 kHz 38204 V 4754mV 24007 V 650 mv 242 mV v v v v wi v v mebas SA ma Tiger NE imebase_54 4 ma Tiger MEME 20 0 ms div Stop 418 mV 20 0 ms div Stop 418 mV 200MS 10MSsiEdge Positive AL AR LJ MEA Ais 513ys X 52ys Ais 513ps As 52us X2 461ys 1 X 192 kHz X2 461ys WAX 192 kHz P11req C3 P8rms C2 21 6905 kHz amp Trailing number s in the filename were truncated to allow auto numbering Trailing number s in the filename were truncated to allow auto numbering Figure 21 Input Voltage 264 Vac Input Frequency Figure 22 Input Voltage 264 Vac Input Frequency 47 Hz CH2 Vout CH3 VpRAIN CH4 li Ep 64 Hz CH2 Vout CH3 VpRAIN CH4 len 2012 Fairchild Semiconductor Corporation 13 FEBFL7701_L34U018A Rev 1 0 1 E FAIRCHILD E SEMICONDUCTOR ww fairchildsemi com lo A 90Vac 1
4. 18mm x 295mm 2012 Fairchild Semiconductor Corporation 6 FEBFL7701_L34U018A Rev 1 0 1 ww fairchildsemi com SSS FAIRCHILD SEMICONDUCTOR 5 Schematic AOIN osnJ ian M at IIIIIlIl Il 1 1 L 12 21 2 ag Figure 7 Schematic FEBFL7701_L34U018A Rev 1 0 1 2012 Fairchild Semiconductor Corporation FAIRCHILD 4 Fee SEMICONDUCTOR c Www fairchildsemi com We dX 6 Bill of Materials Part EH FL7701 Controller Fairchild Semiconductor SS 5 1A 1 A 250 V Fuse Cooper Bussmann MOV 10D471K VARISTOR 470 V 10MM RADIAL Bourns Inc 3 Line Filter LF 1480 253 Sejin Telecom www sejintel com L2 L3 RFBO0810 472 4 7 mH Inductor Coil Craft L4 L5 PCH 45x 475 4 7 mH Inductor Coil Craft 7 BD DF04S 400 V 1 5 A Bridge Rectifier Fairchild Semiconductor D1 1N4148 1 100 V 200 SE Signal Fairchild Semiconductor s ba pen 1 1000V 1A FastRectiier Fairchid Semiconductor 14 C1 D EM E 100 nF 275 Vac X Cap PILKOR 100nF 0 1 uF 630 VAC 10 0 33 uF 400 Vac C0805C104K3RACTU 0 1 uF 25V SMD Capacitor 2012 SEN KEE SEET 330 uF 63 V Electrolytic 25 re Immens 1 200K0 RES ap um zm Yageo ar re Rcososuno7ezaR 1 men ap zs Yageo al pm 100KZTEND 1 10Kn 1WResisior e 1 2 4 5 2012 Fairchild Semiconductor Corporation 8 FEBFL7701_L34U018
5. 9 Thermal Performance at Rated Load Condition ss 20 7 10 Electromagnetic Interference EMI Resuht 22 ORE STO Eli un EREDDTO TT DS 24 2012 Fairchild Semiconductor Corporation 2 FEBFL7701_L34U018A Rev 1 0 1 E FAIRCHILD El SEMICONDUCTORS ww fairchildsemi com This user guide supports the evaluation kit for the FL7701 FEBFL7701_L34U018A It should be used in conjunction with the FL7701 datasheets 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 a universal input 18 3 W LED ballast using the FL7701 The input voltage range is 90 Vrms 264 Vrms and there is one DC output with a constant current of 470 mA at 39 Vmax This document contains general description of FL7701 the power supply specification schematic bill of materials and the typical operating characteristics 1 1 General Description The FL7701 LED lamp driver is a simple IC with a Power Factor Correction PFC function The special adopted digital technique of the IC can automatically detect input voltage condition Zero Crossing Detector ZCD and send a internal reference signal for high power factor When AC input is applied to the IC PFC function is automatically enabled When DC input is applied to the IC PFC function is automatically disabled The FL7701 does not need a bulk capacitor electrolyti
6. CH3 Voran CH4 64 Hz CCH2 Vout CH3 Voran CH4 liINDUCTOR liNDUCTOR 2012 Fairchild Semiconductor Corporation 10 FEBFL7701_L34U018A Rev 1 0 1 EE FAIRCHILD E ww fairchillds mi am SEMICONDUCTORS 7 2 Operating Frequency amp Minimum Duty The recommended switching frequency of FL7701 is around 20 kHz 250 kHz and it is determined by the RT resistor and has prefixed output frequency in RT open condition The maximum duty ratio is fixed below 50 and pre fixed minimum on time is around 400 ns There are two considerable points to design properly The first consider the minimum duty at low input voltage because the FL7701 cannot get higher than 50 duty ratio This means the FL7701 should have duty margin The other is minimum on time at high input voltage condition The FL7701 cannot control output power when the set point is smaller than on time at very high input voltage On time margin must be considered Analysis Utilities Help Switching Frequency 21 72 kHz L i i I L i Measure P1freq C3 P2 rms C2 P3 rms C4 P4 rms C3 P5 max C4 P6 min C4 F7 rms C 1 P8 rms C2 value 21 71762 kHz 38773V 776 7 mV 346 26 V 1 142 V 440 mV status Ca Ca C4 T gger GS 20 0 usidivl Stop 1 125 V 200 kS 1 0GS sjEdge Positive X1 51323ys AX 5 200ps X2 46 123 ys 1 AX 192 31 kHz 2012 06 25 9 1 15 54 Figure 12 Operating Frequency amp Minimum Duty CH2 Vout CH3 Voran CH4 linnuctor 2
7. 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 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 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
8. 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 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 24 FEBFL7701_L34U018A Rev 1 0 1
9. 012 Fairchild Semiconductor Corporation 11 FEBFL7701_L34U018A Rev 1 0 1 PE FAIRCHILD See SEMICONDUCTOR ww fairchildsemi eom 7 3 Typical Waveforms Steady State Figure 13 through Figure 22 show the normal operation waveforms by input voltage and input frequency The output voltage and current always keeps a certain output level with input frequency X 2 ripple and the test results are provided in Table 5 I PANNI VIVIAN Y 1 1 f i A r1 T LIT PLL VE ATI I n A d i Measure Pifreq C3 P2rms C2 P3rms C4 P4rms C3 PS max C4 P6min C4 P7rms Cft P8rms C2 Measure Pifreq C3 P2rms C2 P3rms C4 P4rms C3 P5max C4 P min C4 P7rms Cf P8rms C2 value 20 9478 kHz 37731V 4682mV 6407 V 724 mV 113 mv value 21 4288 kHz 37 783 V 4516mV 6376 V 676 mV 156 mV status A Ca vY Ca Ca status A Ca Ca imebase 544 mg Trigger I imebase 544 ma Trigger GEM 10 0 Vidiv 100 Vidiv 20 0 ma div Stop 100 V div 20 TS ET 418 mV 10 000 V 96 00 V ofst IGI EBD Ej Positive 96 00 V ofst 200MS 10MSis Edge Positive 37 480 Vii 115 61V X12 513ps AX 52ys 330 mV Ais 513ps AX 52s 37 STV VET 624V X2 461ys WAX 192 kHz 8398 V X2 461ys WAX 192 kHz Ay 91mv Ay 10937V zu ES 83 65 V LeCroy 2012 06 25 1 25 23 amp Trailing number s in the Mename were truncated to allow auto numbering Figure 13 Input Voltage 90 Vac
10. 10Vac 180Vac 220Vac 264Vac Figure 23 CC Deviation Curve Table 4 Output Characteristics by Input Voltage amp Frequency P E 2 Semer Tam rm 2012 Fairchild Semiconductor Corporation 14 FEBFL7701_L34U018A Rev 1 0 1 E FAIRCHILD el SEMICONDUCTOR ww fairchildsemi eom 7 4 Typical Waveforms Abnormal Mode LED Open Figure 24 shows the open load condition test method If the LED disconnects from the system the output voltage increases up to match the voltage of the input source Add the output voltage clamping circuit or the special protection circuit to protect components especially output capacitor e Ki Fuse L1 L vL HV Tor N vec GND n RT ADIM R9 t cs Figure 24 Open LED Condition The Figure 25 shows the test results of waveform in LED open condition the output voltage clamps a certain level File Vertical Timebase Trigger Display Cursors Measure Math Analysis Utilities Help MAMA i f VIVI VIENT Y NNNNNINENNNN Measure P1max C2 P2 rms C2 P3 rms C4 P4 rms C3 P5 max C4 P6 min C 4 F7 rms C 1 P8 rms C2 value 520V 44 87 V 346 5 mV 208 72 V 642 mV 29 mV status Ca C4 imebase 124 ms Trigger WEB 20 0 ms div Normal 47 4 V 1 00 MS 5 0 ECH II X1 514ys AX 52us X2 46 2 ys 1 AX 192 kHz Waiting for Trig LeCroy Figure 25 Output Waveforms at LED OPEN Condition CH2 Vout CH3 Voran CH4 Je 2012 Fai
11. 6 00 V olst 500MS 25MS Edge Positive 300 V 2530V ve 300 V 252 Vi 2290 V re 252 Vi Ay 48 5 17 240 mv Ay 48 Vi dy amp Trailing number s in the filename were truncated to allow auto numbering amp Trailing number s in the Mename were truncated to allow auto numbering Figure 8 Soft Start Characteristics at 90 Vac Figure 9 Soft Start Characteristics at 264 Vac 47 Hz CH2 Vout CH3 Vprain CH4 linnuctor 47 Hz CH2 Vout CH3 Vpnam CH4 linnuctor D D Measure Pt treq C2 P2rms C2 P3rms C4 P4rms C3 P5max C4 P6 min C4 P7 rms C 1 P8 rms C2 Measure P11req C2 P2rms C2 P3rms C4 P4Tms C3 P5 max C4 P6 min C4 P7 rms C 1 P8 rms C2 value 23 580 V 296 4 mV 50 83 V 1073 V 18 mV value 28 653 V 348 8 mV 204 52 V 1 105 V 18 mv status Ca C4 status 4 v Ca imebase 54 4 ma Trigg I imebase 54 4 ma Trigg I 100 Vidiv 500 mV div 20 0 ms div Singe 1060 V 100 Vidi 500 mV div 20 0 ms div Stop 1 060 V 96 00 V ofst 15100 V 500MS cJ Positive 96 00 V ofst 15100 V 500MS 25MSisiEdge Positive 300 Vi 2530V 300 VI 2530V 252 VI 2290 V 252 V 2290 V Ay 48 Vi Ay 240 mV Ay 48 VI Ay 240 mV Trailing number s in the Mename were truncated to allow auto numbering Wang for Tngge amp Trailing number s in the Mename were truncated to allow auto numbering Figure 10 Soft Start Characteristics at 90 Vpc Figure 11 Soft Start Characteristics at 264 Vpc 64 Hz CCH2 Vout
12. A Rev 1 0 1 E FAIRCHILD ES ww fairchilldsemi com SEMICONDUCTOR 7 Performance of Evaluation Board Table 3 Test Condition amp Equipments Test Temperature Ta 25 C Open Flame AC Source PCR500L by Kikusui Power Meter PZ4000 by Yokogawa Oscilloscope waverunner 64Xi by Lecroy Test Equipment EMI Test Receiver ESCS30 by ROHDE amp SCHWARZ Two Line V Network ENV216 by ROHDE amp SCHWARZ Thermometer CAM SC640 by FLIR SYSTEMS LED EHP AXO8EL GTO1H P03 3W by Everlight 2012 Fairchild Semiconductor Corporation 9 FEBFL7701_L34U018A Rev 1 0 1 EE FAIRCHILD ed ww fairchildsemi om SEMICONDUCTORS 7 1 Typical Waveforms Startup Figure 8 through Figure 11 show the typical startup performance at different input voltage conditions When AC input voltage is applied to the system the FL7701 automatically operates in AC Mode after finishing an internally fixed seven cycle soft start period D Measure P1treqiC2 P2rms C2 P3rms C4 P4mms C3 P5max C4 P6 min C4 P7rms C1 P8 rms C2 Measure P11req C2 P2rms C2 P3rms C4 P4rms C3 P5max C4 P6 min C4 P7 rms C 1 P8 Tms C2 value 28 169 V 336 8 mV 54 80 V 1071V 15 mV value 29678 V 383 0mV 21831V 1 104 V 19 mv status 4 C4 Ca CA status 4 v v imebase 544 mg Trigger i imebase 544 mg Trigg I 100 Vidiv 500 mVidiy 20 0 ms div Stop 1 060 V 100 Vidi 20 0 msidiv Stop 1 060 V 96 00 V ofsi 15100V 500MS 25MSisfEdge Positive 9
13. FER FAIRCHILD N es ww fairchildsemi eam SEMICONDUCTORS User Guide for FEBFL7701 L34U018A Evaluation Board Universal Line Voltage LED Ballast Featured Fairchild Product FL7701 Direct questions or comments about this evaluation board to Worldwide Direct Support Fairchild Semiconductor com 2012 Fairchild Semiconductor Corporation 1 FEBFL7701_L34U018A Rev 1 0 1 E FAIRCHILD El SEMICONDUCTORS ww fairchildsemi om Table of Contents TB Tee O E 3 te NEE DPE DP TE 3 E TRC AUIS EM A ENNEN EE 3 1 3 Internal Block Luaeram EEN eeeEEERRREERRREEEERREERSREERNREEEEEREEERSEEEEN dorrean 4 2 General Specifications for Evaluation Board 5 3 Photographs POM cece eee esesensccneccseesssesesccecesnseasseseccceeecnnonesens 6 4 Printed Circuit Board ELLE nse eencccecsaccsasssenscccesseetassseecsceceaccnaasssesscecs 6 3 Schematic iere eere onn PEE eee eene eene nne terns eene saam EEN 7 6 Bill of MER enne RD ENEE eessen 8 7 Perfosimaneetoigiey uation Board 9 7 1 2 IAE Coms Startup EENEG eene ERE 10 7 2 Operating Frequency amp Minimum Duty 11 TEE oe dl Aa eforms Steady SIA EEGEN 12 7 4 Typical Waveforms Abnormal Mode LED Open 15 7 5 Typical Waveforms Abnormal Mode Inductor Shot 16 Ios temi Tficiency sn ROS 17 7 7 Power Factor at Rated Load Condition nn 18 7 8 THD Performance at Rated Load Condition ss 19 7
14. Input Frequency Figure 14 Input Voltage 90 Vac Input Frequency 47 Hz CH2 Vout CH3 VpRAIN CH4 li ED 64 Hz CH2 Vour CH3 VDRAIN CH4 li Ep TAA T 4 _ Measure P11req C3 P2rms C2 P3rms C4 P4rms C3 P5 max C4 P6 min C4 P7 rms C1 P8 rms C2 Measure P1treq C3 P2rms C2 P3rms C4 P4rms C3 P5 maxi C4 P6 min C4 P7 rms C 1 P8 rms C2 value 21 6255 kHz 38 071V 487 6mV 85 30V 716 mv 139 mv value 19 7268 kHz 38 126 V 4757 mV 8501V 675mv 184 mV status 4 Ca status 4 Ca v v mebase_54 4 ma rigger GENE imebase 54 4 ma rigger GEN 10 0 Vidiv 100 Vidi FD E 418 mV 10 0 Vidiv 100 Vidi 20 0 msidiv Stop 418 mV 10 000 V 96 00 V ofst 200MS 10MSis Edge Positive 10 000 V 96 00 V ofst 200MS 10MS s Edge Positive i 37 501 Vij Xt 513ps AX 52us 37 486 Vii 141 06 V Ais 513ps AX 52ys 37 528 V 1 12 19 V X2 461ys 1 AX 192 kHz 37 493 Vit 21 4 V X2 461s 1 X 192 kHz Ay 26 mv Ay 12457V Ay 119 92 V amp Trailing number s in the filename were truncated to allow auto numbering AU dy Trailing number s in the filename were truncated to allow auto numbering Figure 15 Input Voltage 110 Vac Input Frequency Figure 16 Input Voltage 110 Vac Input Frequency 47 Hz CH2 Vout CH3 VpRAIN CH4 len 64 Hz CH2 Vout CH3 VpRAIN CH4 hen 2012 Fairchild Semiconductor Corporation 12 FEBFL7701 L34U018A Rev 1 0 1 cM FAIRCHILD E ww fairchilldsgmi gem SEMICONDUCTORS j T VT
15. MP Diode D3 37 4 C 48 0 C 59 4 C FLIR Dist 0 5 Trefl 20 0 0 96 LAN RE aU Sa Figure 34 Thermal Test Result at 220 Vac Condition Spot 60 9 x Spot 49 5 Box Box Max 56 1 x Max 34 1 MOSFET Q1 IC TEMP Circle S Circle Max 62 9 56 1C 62 9 C Max 34 8 E EE Filter L3 TEMP Inductor TEMP BEE 34 8 C 49 5 60 9 C FLIR Dist 0 5 Trefl 20 0 amp 0 96 Dist 0 5 Trefl 20 0 amp 0 96 Figure 35 Thermal Test Result at 264 Vac Condition Table 8 Temperature Performance by Input Voltage ic MosFeT a1 Diode 03 Fiter L2 petz 2012 Fairchild Semiconductor Corporation 21 FEBFL7701 L34U018A Rev 1 0 1 EEE FAIRCHILD EE SEMICONDUCTOR ww fairchildsemi com 7 10 Electromagnetic Interference EMI Result All measurement was conducted in observance of CISPR22 criteria This regulation is tighter than the CISPR15 regulation for lighting applications 80 60 NG PI 4 EN 55022 Voltage on Mains OP EN 56022 Voltage gh Mains AY Level in dBZ 150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M Frequency in Hz Figure 36 Conducted Emission Line at 110 Vac Full Load 10 LED in Series 80 EN 55022 Voltage on Mains OP EN 55022 Voltage vin Mains AV 30 du ON T fv Level in dBZ 150k 300 400500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M Frequency in Hz Figure 37 Conducted Emission Neutral at 110 Vac Full Load 10 LED in Series
16. c capacitor for supply rails stability which can significantly affect to LED lamp system 1 2 Features Digitally Implemented Active PFC Function No Additional Circuit Necessary for High PF Built in HV Supplying Circuit Self Biasing AOCP Function with Auto Restart Mode Built in Over Temperature Protection OTP Cycle by Cycle Current Limit Low Operating Current 0 85 mA Typical Under Voltage Lockout with 5 V Hysteresis Programmable Oscillation Frequency Programmable LED Current RS Analog Dimming Function Soft Start Function Precise Internal Reference 3 2012 Fairchild Semiconductor Corporation 3 FEBFL7701_L34U018A Rev 1 0 1 E FAIRCHILD E SEMICONDUCTOR ww fairchildsemi com 1 3 Internal Block Diagram Reference GND 6 eun Figure 1 Block Diagram Table 1 Pin Definitions Description 1 CS Current Sense Limits output current depending on the sensing resistor voltage The CS pin is also used to set the LED current regulation Output Connects to the MOSFET gate 3 VCC Supply Voltage Supply pin for stable IC operation ZCD signal detection used for accurate PFC function Resistor Programmable operating frequency using an external resistor 4 HT connected to this PIN and the IC has fixed frequency when this pin is left open or floating Analog Dimming Connects to the internal current source and can change 5 ADIM the output current using an external
17. ficiency Input Voltage Efficiency 96 90 Vac 110 Vac 180 Vac 220 Vac 264 Vac 2012 Fairchild Semiconductor Corporation 17 FEBFL7701 L34U018A Rev 1 0 1 SSS FAIRCHILD BEES SEMICONDUCTORS ww fairchildsemi eom 7 7 Power Factor at Rated Load Condition Figure 29 shows the system Power Factor PF performance for the entire input voltage range 90 Vac to 264 Vac at different input frequency conditions 47 Hz 64 Hz The PF changes slightly according to the input frequency PF PF 47Hz FF 64Hz l110VAC l180VAC 220VAC 264VAC Vin Figure 29 Power Factor Table 6 Power Factor Test Results 90 Vac SE 99 180 Vac 264 Vac 2012 Fairchild Semiconductor Corporation 18 FEBFL7701 L34U018A Rev 1 0 1 SSS FAIRCHILD es ww fairchiliasiBmi m SEMICONDUCTORS 7 8 THD Performance at Rated Load Condition Figure 30 shows the Total Harmonic Distortion THD performance at different input frequencies Test results are similar THD meets international regulations under 30 THD TIHD 47Hz l IHD 64Hz 0 00 90VAC 110VAC 180VAC 220VAC 264VAC Vin Figure 30 Total Harmonic Distortion Performance Table 7 THD Test Result Input Voltage THD 96 90 Vac 110 Vac 2012 Fairchild Semiconductor Corporation 19 FEBFL7701_L34U018A Rev 1 0 1 E FAIRCHILD El SEMICONDUCTOR 7 9 Thermal Performance at Rated Load Condition The Figure 31 through Figu
18. 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 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
19. rchild Semiconductor Corporation 15 FEBFL7701_L34U018A Rev 1 0 1 SSS FAIRCHILD el SEMICONDUCTOR ww fairchildsemi eom 7 5 Typical Waveforms Abnormal Mode Inductor Short Figure 26 and Figure 27 show the test method and result of an inductor short The FL7701 uses an Abnormal Over Current Protection AOCP function limiting the current on RCS in the event of an inductor short EE E EE E EE Fuse L1 C1 R9 VCC GND PPP Figure 26 Inductor Short Condition Timebase Trigger Display Cursors Measure Math Analysis Utilities Help AAA VV a Measure P1max C2 P2 rms C2 P3 rms C4 P4 rms C3 P5 max C4 P6 min C4 F7 rms C 1 P8 rms C2 value 409V 35 99 V 356 4 mV 229 73 V 656 mV 4 mV Ca rd d 10 0 ms div Sto 100MS 10MS sfEdge X1 513ys AX 52us X2 461ys 1 AX 192 kHz 2012 06 25 9 3 09 38 Figure 27 Test Result of Inductor Short Condition CH2 Vout CH3 Voran CH4 ligp 2012 Fairchild Semiconductor Corporation 16 FEBFL7701_L34U018A Rev 1 0 1 SSS FAIRCHILD BEES SEMICONDUCTORS ww fairchildsemi eom 7 6 System Efficiency Figure 28 shows system efficiency results for different AC input voltage frequency conditions As shown the input frequency has negligible effect on system efficiency Efficiency ef Fificiency_47Hz li rificiency 64Hz l110VAC 180VAC 220VAC 254VAC VIN Figure 28 System Efficiency Table 5 Test Result of System Ef
20. re 35 show the temperature checking results on the board depending on different input voltage conditions All of the components temperatures are below 69 C in whole input voltage condition Spot 50 4 Box Doe RAE MOSFET Q1 Circle Max 53 1 Diode D3 50 4 C Dist 0 5 Trefl 20 0 0 96 Spot 41 3 Box Max 68 3 Circle Filter L2 TEMP Max 68 3 Filter L3 TEMP Inductor TEMP 41 3 C Dist 0 5 Trefl 20 0 0 96 Figure 31 Thermal Test Result at 90Vac Condition Spot 54 9 Box eh LEE EA Max 53 8 64 2 C Diode D3 54 9 C FLIR Dist 0 5 Trefl 20 0 0 96 IC TEMP 53 8 C Spot 44 7 Box Max 61 2 Circle 2 GLE Filter L2 TEMP Filter L3 TEMP Inductor TEMP 44 7 C Dist 0 5 Trefl 20 0 0 96 Figure 32 Thermal Test Result at 110Vac Condition Spot 58 8 Box Max 56 1 Circle MOSFET Q1 Max 56 4 Diode D3 58 8 FLIR Dist 0 5 Trefl 20 0 0 96 IC TEMP Box Max 43 1 Circle Max 43 5 Filter L2 TEMP Filter L3 TEMP Inductor TEMP 46 9 C Dist 0 5 Trefl 20 0 0 96 Figure 33 Thermal Test Result at 180 Vac Condition 2012 Fairchild Semiconductor Corporation FEBFL7701_L34U018A Rev 1 0 1 FAIRCHILD SEMICONDUCTOR 6 Ge S Spot 48 0 Box Max 36 8 Spot 59 4 xe Box erter MOSFET Q1 IC TEMP Circle Max 58 9 55 0 C 58 9 C Filter L2 TEMP Filter L3 TEMP Inductor TE
21. resistor If ADIM is not used connect a 0 1 UF bypass capacitor between ADIM and GND 6 GND GROUND Ground for the IC 8 HV High Voltage Connect to the high voltage line and supply current to the IC 2012 Fairchild Semiconductor Corporation 4 FEBFL7701 L34U018A Rev 1 0 1 E FAIRCHILD esl ww fairchildsemi eam SEMICONDUCTOR 2 General Specifications for Evaluation Board All data for this table was measured at an ambient temperature of 25 C Table 2 Summary of Features and Performance AC Input Frequency Output Current o Line Input Voltage Change CC deviation lt 44 5 90 264 Vac C pen sm O ao Temperature pie E Ear PCB Size Initial Application Notes 1 The output current has leng ripple To reduce ripple current use a large electrolytic capacitor in parallel with the LED Ensure the capacitor voltage rating is high enough to withstand an open LED condition or use a Zener diode for protection 2 The output power is not equal to the apparent power due to the slight phase shift between the output voltage and current 18 mm width x 295 mm length x 10mm height 2012 Fairchild Semiconductor Corporation 5 FEBFL7701 L34U018A Rev 1 0 1 SSS FAIRCHILD a ww fairchildsemi com SEMICONDUCTORS 3 Photographs Figure 2 Top View Length 295mm Figure 3 Width 18mm Figure 4 Height 10mm Include PCB 4 Printed Circuit Board Figure 6 Bottom Side
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