RDR W Non-Isolated Buck Using LYT0006D 04-Oct-13 내용 1 소개 파워서플라이사양 회로도 회로설명 입력 EMI 필터링 LYTSwitch

제목사양애플리케이션작성자문서번호 LYTSwitch TM -0 LYT0006D 를사용한 7W 비디밍, 비절연벅 LED 드라이버에대한참조디자인보고서 190VAC 265VAC 입력, 85V, 82mA 출력 A17/A19 LED 드라이버램프교체용 애플리케이션엔지니어링부서 RDR-378 날짜 04.10.13 개정 1.0 요약및기능 일체형 (single-stage) 역률보정 (230V에서 >0.5) 및정확한정전류 (CC) 출력 저가형, 적은부품수및소형 PCB 풋프린트솔루션 높은에너지효율, VAC 입력전체에서 91% 빠른스타트업시간 (<100ms) - 인지되는지연시간없음 내장된보호및신뢰성기능 단일샷무부하보호기능 오토리커버리기능으로출력단락회로보호 큰히스테리시스 (Hysteresis) 를갖고있는오토리커버리써멀셧다운기능으로부품과 PCB 모두보호 브라운아웃상태에서손상없음 IEC 링웨이브, 디퍼렌셜라인서지및 EN55015 전도성 EMI 충족 특허정보여기에설명한제품및애플리케이션 ( 제품의외장트랜스포머구성및회로포함 ) 은하나이상의미국및해외특허의대상이되거나파워인테그레이션스 () 에서출원중인미국및해외특허신청의대상이될수있습니다. Power Integrations 의전체특허목록은 에서확인할수있습니다. 는고객에게 http:///ip.htm 에명시된특정특허권에따라라이센스를부여합니다. 5245 Hellyer Avenue, San Jose, CA 95138 USA.

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 내용 1 소개... 3 2 파워서플라이사양... 5 3 회로도... 6 4 회로설명... 7 4.1 입력 EMI 필터링... 7 4.2 LYTSwitch-0... 7 4.3 출력정류... 7 4.4 출력피드백... 7 4.5 무부하보호... 8 5 PCB 레이아웃... 9 6 BOM... 10 7 인덕터디자인스프레드시트... 11 8 성능데이터... 13 8.1 액티브모드효율... 14 8.2 출력전류레귤레이션... 15 8.2.1 입력전압및부하전체에서의출력전류레귤레이션... 15 9 써멀성능... 16 9.1 사용장비... 16 9.2 써멀결과... 18 9.2.1 부하 : 85V/82mA LED 부하... 18 9.3 써멀스캔... 19 10 파형... 20 10.1 정상작동시드레인전압및전류... 20 10.2 출력단락상태시드레인전압및전류... 21 10.3 드레인전압및전류스타트업프로파일... 21 10.4 출력전류스타트업프로파일... 22 10.5 입력-출력프로파일... 23 10.6 라인새그및서지... 24 10.7 원샷무부하보호... 25 10.8 브라운아웃 / 브라운인... 26 11 라인서지... 27 12 전도성 EMI... 29 13 개정내역... 32 중요사항 : 이기판은안전절연거리요구사항에맞도록디자인되었지만엔지니어링프로토타입은아직기관승인을받지않은상태입니다. 따라서 AC 입력을프로토타입보드에제공하도록절연트랜스포머를사용하여모든테스트를수행해야합니다., Inc. Page 2 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 1 소개 이문서에서는초소형벅토폴로지의 LYTSwitch TM -0 제품군 (LYT0006D) 을사용하는비용효과적인파워서플라이에대해설명합니다. Figure 1 Populated Circuit Board 이파워서플라이는 190VAC~265VAC 의입력전압범위에서작동합니다. 벅토폴로지를사용하면 DC 버스전압이충분히높기때문에 85V 출력을지원할수있습니다. 벅컨버터에서는출력전압이항상입력전압보다낮아야합니다. 또한출력전압이 LYTSwitch-0 의최대듀티사이클에의해제한되며입력전압이출력전압보다커야합니다. 참조디자인은레트로핏램프애플리케이션용으로만제한되어있지않으며, LED 튜브또는발라스트애플리케이션에맞게디자인레이아웃을손쉽게수정할수있습니다. Page 3 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 Figure 2 Populated Circuit Board, Top View. Figure 3 Populated Circuit Board, Bottom View., Inc. Page 4 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 2 파워서플라이사양 아래표는설계의최소허용성능을나타냅니다. 실제성능은결과섹션에나열되어있습니다. 설명기호최소일반최대단위설명 입력전압작동 V IN 190 265 VAC 2 선식 P.E. 없음 작동주파수는제한되지않습니다. 주파수 f LINE 47 50/60 Hz 400Hz 라인에사용할경우센싱저항을조절합니다. 출력 출력전압 V OUT 83 85 88 V 출력전류 I OUT 82 ma ±4%, 200VAC-240VAC 총출력전력연속출력전력 P OUT 7 W 효율 240VAC, 85 V LED 91 % P OUT, 25 º C 에서측정 역률 240VAC, 85 V LED PF 0.5 P OUT, 25 º C 에서측정 환경 전도성 EMI CISPR22B/EN55015B 충족 라인서지 디퍼렌셜모드 (L1-L2) 0.5 kv 링웨이브 (100kHz) 디퍼렌셜모드 (L1-L2) 2.5 kv 1.2/50 서지, IEC 1000-4-5, 직렬임피던스 : 디퍼렌셜모드 : 2 500A 단락회로직렬임피던스 : 디퍼렌셜모드 : 2 주변온도 T AMB -10 25 º C 자유대류, 임해고도 Page 5 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 3 회로도 Figure 4 Schematic. Zener Diode VR1 is Optional, Providing One-time No-load Protection. Refer to AN-60 for Additional OVP Options., Inc. Page 6 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 4 회로설명 그림 3 에나타낸파워서플라이는하이사이드벅구성에 LYT0006D(U1) 를사용해출력전압 85VDC 에서 82mA 의정전류를제공합니다. 파워서플라이는항상정전류 (CC) 로구동되어야하는 LED 용으로설계되었습니다. 4.1 입력 EMI 필터링 퓨즈 RF1 이회로단락보호기능을제공합니다. 브리지 BR1 이우수한역률을위해전파정류를제공합니다. 커패시터 C1, C2 와커먼모드초크 L1 이전도성 EMI 규격을충족시키기위해서 π 필터를구성합니다. 또한커패시터 C1 과 C2 를에너지저장용으로사용하여라인노이즈를줄이고라인서지에대해보호합니다. 4.2 LYTSwitch-0 LYTSwitch-0 제품군은우수한라인레귤레이션과 0~100ºC(LYTSwitch-0 케이스온도 ) 의온도레귤레이션을달성하는간편하고비용효과적인 LED 드라이버를설계하도록완벽하게최적화되어있습니다. 파워인덕터와센싱저항의균형을이루어최상의라인레귤레이션을달성하기위해 PIXl 스프레드시트를사용했습니다. 역률과라인부하레귤레이션을극대화하도록설계하기위해총입력커패시턴스를최적화합니다. LYTSwitch-0 제품군에는동작온도가과도하게높아진경우파워서플라이를보호하기위한써멀제한기능이내장되어있습니다. 벅컨버터스테이지는파워 MOSFET 스위치를포함한 LYT0006D(U1), 프리휠링다이오드 (D1), 센싱저항 (R2, R3), 파워인덕터 (L2), 출력커패시터 (C5) 로구성됩니다. 컨버터는역방향전류의사이클을제한하기위해서대부분 DCM( 불연속모드 ) 으로작동합니다. 스위칭손실을최소화하기위해패스트프리휠링다이오드를선택했습니다. 파워컨버터에는비용절감을위해표준기성품인덕터를사용했습니다. 4.3 출력정류 우수한효율을달성하고써멀관리를위해패스트출력다이오드 (D1) 를사용했습니다. 일바적으로 LED 애플리케이션의주변온도는 70ºC 를초과하며 t RR (<35ns) 이낮은디바이스가권장됩니다. 4.4 출력피드백 스위칭사이클을생략함으로써레귤레이션을유지합니다. 출력전류가증가하면 FEEDBACK(FB) 핀의전압도높아집니다. 이전압이 V FB 를초과할경우전압이 V FB 아래로줄어들때까지후속스위칭사이클이생략됩니다. 전류가 R2, R3 에서센싱되고 C4 에의해필터링된후정확한레귤레이션을위해 FB 핀으로공급됩니다. 우수한라인 Page 7 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 레귤레이션을달성하기위한핵심은최소인덕턴스가계산된후파워인덕터와센싱저항의값이균형을이루는것입니다. 바이패스커패시터 (C4) 를 FB 핀과 SOURCE(S) 핀사이에연결하여출력전류센싱중에전력손실을줄이는데도움이되도록했습니다. 이커패시터는 FB 핀에대해피드백전류정보를샘플링하고홀딩하기위해작동합니다. FB 핀과 C4 사이에제한저항이필요없습니다. 왜냐하면피크전압이디바이스의최대정격을초과하지않기때문입니다. 4.5 무부하보호 설계에는옵션인원샷무부하보호회로가적용됩니다. 돌발적인무부하작동상태가발생할경우출력커패시터가 VR1 에의해보호됩니다. 고장발생후제너다이오드 VR1 을교체해야할수도있습니다. 다른 OVP 설계옵션을확인하려면 AN-60 을참조하십시오. 작동 (LED 레트로핏램프 ) 중에는부하가항상연결되므로 VR1 을제거해비용을절감할수있습니다. 이옵션을사용할경우제조과정에서보드레벨테스팅중에보호를위해 70VAC 를입력에가할수있습니다. 출력전류가측정되지않으면부하가연결되지않은것입니다. 이테스트를통해 OV 보호회로를사용하지않으면서도보드의안전하고비파괴적인초기파워업을을가능하게합니다., Inc. Page 8 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 5 PCB 레이아웃 Figure 5 Printed Circuit Layout, Top View. Figure 6 Printed Circuit Layout, Bottom View. Page 9 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 6 BOM Item Qty Ref Des 설명 Manufacturer P/N Manufacturer Electrical 1 1 BR1 1000 V, 0.8 A, Bridge Rectifier, SMD, MBS-1, 4-SOIC B10S-G Comchip Technology 2 1 C1 100 nf, 450 V, Film MEXXD31004JJ1 Duratech 3 1 C2 330 nf, 450 V, METALPOLYPRO ECW-F2W334JAQ Panasonic 4 1 C3 100 nf, 25 V, Ceramic, X7R, 0603 VJ0603Y104KNXAO Vishay 5 1 C4 22 F, 16 V, Ceramic, X7R, 0805 C2012X5R1C226K TDK 6 1 C5 68 F, 100 V, Electrolytic, Gen. Purpose, (10 x 16) UHE2A680MPD Nichicon 7 1 D1 600 V, 1 A, Ultrafast Recovery, 30 ns, SOD57 BYV26C Philips 8 1 L1 10 mh, 0.076 A, 20% RL-5480-3-10000 Renco Elect 9 1 L2 1.5 mh, 0.250 A, 10% RL-5480HC-3-1500 Renco Elect 10 1 R1 4.7 k, 5%, 1/8 W, Thick Film, 0805 ERJ-6GEYJ472V Panasonic 11 2 R2 R3 53.6, 1%, 1/8 W, Thick Film, 0805 ERJ-6ENF53R6V Panasonic 12 1 RF1 10, 5%, 2 W, Wirewound, Fusible FW20A10R0JA Bourns 13 1 RV1 275 V, 23 J, 7 mm, RADIAL V275LA4P Littlefuse 14 1 U1 LYTSwitch-0, SMD-8C LYT0006D 15 1 VR1 100 V, 5%, 1 W, DO-41 1N4764A-TAP Vishay Mechanical 16 1 WIRE(V-) Wire, UL1007,# 24 AWG, Blk, PVC, 4" 1007-24/7-0 Anixter 17 1 WIRE (L) Wire, UL1007, #24 AWG, Blu, PVC, 4" 1007-24/7-6 Anixter 18 1 WIRE(V+) Wire, UL1007, #24 AWG, Red, PVC, 4" 1007-24/7-2 Anixter 19 1 WIRE(N) Wire, UL1007, #24 AWG, Wht, PVC, 4" 1007-24/7-9 Anixter 20 1 PCB FR4, 0.31, 1 Oz Cu (0.51 X 2.1 ), Inc. Page 10 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 7 인덕터디자인스프레드시트 ACDC_LYTSwitchZero_052813; Rev.0.8; Copyright Power Integrations 2013 INPUT INFO OUTPUT UNIT LYTSwitchZero_Rev_0-8.xls: LYTSwitchZero Design Spreadsheet INPUT VARIABLES VACMIN 190 190 Volts Minimum AC Input Voltage VACNOM 230 230 VACMAX 265 265 Volts Maximum AC Input Voltage FL 50 50 Hertz Line Frequency VO 85 85 Volts 출력전압 IO 82 82 ma 출력전류 Pout 6.97 W EFFICIENCY 0.91 0.91 Overall Efficiency Estimate (Adjust to match Calculated, or enter Measured Efficiency) CIN 0.43 0.43 uf Input Filter Capacitor Input Stage Resistance 4.7 4.7 ohms Input Stage Resistance, Fuse & Filtering Switching Topology Buck Type of Switching topology DC INPUT VARIABLES VMIN 85 Volts Minimum DC Bus Voltage VMAX 374.766594 Volts LYTSwitchZero LYTSwitchZero LYT0006 LYT0006 ILIMIT 0.375 Amps Typical Current Limit ILIMIT_MIN 0.33275 Amps Minimum Current Limit ILIMIT_MAX 0.401 Amps Maximum Current Limit FSMIN 62000 Hertz Minimum Switching Frequency IRMS 85.25298 ma Expected RMS current through LYTSwitch VDS 4.8375 Volts Maximum On-State Drain To Source Voltage drop DIODE VD 0.7 Volts Freewheeling Diode Forward Voltage Drop VRR 600 Volts Recommended PIV rating of Freewheeling Diode IF 1 Amps Recommended Diode Continuous Current Rating Diode Recommendation BYV26C Suggested Freewheeling Diode OUTPUT INDUCTOR Core type Off-the- Select core type between Ferrite and Off-the-Shelf Shelf Off-the-Shelf Core size Select core size Custom Core Enter custom core description (if used) AE N/A mm^2 Core Effective Cross Sectional Area LE N/A mm Core Effective Path Length AL N/A nh/t^2 Ungapped Core Effective Inductance BW N/A mm Bobbin Physical Winding Width NL N/A Number of turns on inductor BP N/A Gauss Peak flux density LG N/A mm Gap length OD N/A Maximum Primary Wire Diameter including insulation Page 11 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 INS N/A Estimated Total Insulation Thickness (= 2 * film thickness) DIA N/A Bare conductor diameter AWG N/A Primary Wire Gauge (Rounded to next smaller standard AWG value) CM N/A Bare conductor effective area in circular mils CMA N/A!!! INCREASE CMA > 200 (increase L(primary layers),decrease NS, use larger Core) L N/A LP 1350 1350 uh Output Inductor, Recommended Standard Value IO_Average 82.52548 ma Average output current ILRMS 176.4503 Estimated RMS inductor current (at ma VMAX) FEEDBACK COMPONENTS RFB 26.8 26.8 Ohms Feedback Resistor. Use closest standard 1% value CFB 22 uf Feedback Capacitor OUTPUT REGULATION IO_VACMIN 82.52548 ma Output Current at VACMIN IO_VACNOM 80.51328 ma Output Current at VACNOM IO_VACMAX 79.12785 ma Output Current at VACMAX, Inc. Page 12 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 8 성능데이터 All measurements performed at room temperature ( 25 ºC) unless otherwise specified. 입력 Input Measurement LED Load Measurement Efficiency Regulation VAC Freq V IN I IN P IN V PF OUT I OUT P OUT (%) (%) (V RMS ) (Hz) (V RMS ) (ma RMS ) (W) (V DC ) (ma DC ) (W) 190 50 190.20 54.85 7.449 0.714 81.4500 83.680 6.832 91.72 2.05 200 50 220.35 53.19 7.388 0.630 81.4400 82.620 6.740 91.23 0.76 220 50 230.22 52.27 7.332 0.609 81.4400 82.000 6.688 91.22 0.00 230 50 240.23 51.60 7.279 0.587 81.4300 81.390 6.637 91.18-0.74 265 50 265.25 50.39 7.100 0.531 81.4000 79.050 6.442 90.73-3.60 190 50 190.16 55.32 7.669 0.729 84.4900 83.260 7.052 91.95 1.54 200 50 220.35 52.81 7.598 0.653 84.4800 82.290 6.964 91.66 0.35 220 50 230.21 52.40 7.570 0.628 84.4800 81.840 6.925 91.48-0.20 230 50 240.23 52.08 7.545 0.603 84.4700 81.390 6.885 91.25-0.74 265 50 265.28 52.16 7.473 0.540 84.4600 80.300 6.790 90.86-2.07 190 50 190.17 55.92 7.937 0.746 87.5700 83.230 7.306 92.05 1.50 200 50 220.35 53.01 7.833 0.671 87.5500 81.780 7.173 91.57-0.27 220 50 230.22 52.54 7.798 0.645 87.5400 81.480 7.144 91.61-0.63 230 50 240.34 52.22 7.773 0.619 87.5400 81.180 7.117 91.56-1.00 265 50 265.26 51.80 7.719 0.562 87.5300 80.430 7.048 91.31-1.91 Table 1 Raw Data of Unit. Page 13 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 8.1 액티브모드효율 93.0 82 V 85 V 88 V 92.5 Efficiency (%) 92.0 91.5 91.0 90.5 90.0 180 190 200 210 220 230 240 250 260 270 280 Input Voltage (V RMS ) Figure 7 Efficiency with Respect to AC Input Voltage, 190-265 VAC (60 Hz) Input., Inc. Page 14 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 8.2 출력전류레귤레이션 8.2.1 입력전압및부하전체에서의출력전류레귤레이션 5 4 82 V 85 V 88 V 3 2 Regulation (%) 1 0-1 -2-3 -4-5 180 190 200 210 220 230 240 250 260 270 280 Input Voltage (V RMS ) Figure 8 Load Regulation, Room Temperature. Page 15 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 9 써멀성능 9.1 사용장비 Chamber: AC Source: Tenney Environmental Chamber Model No: TJR-17 942 Chroma Programmable AC Source Model No: 6415 Wattmeter: Data Logger: Yokogawa Power Meter Model No: WT2000 Agilent Figure 9 Thermal Chamber Set-up Showing Box Used to Prevent Airflow Over UUT. Open Frame Set-up Measurement. Figure 10 Thermal Measurement, Thermocouple Set-up., Inc. Page 16 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D Figure 11 Enclosed Thermal Measurement Set-up. Note: Typical A19 enclosure is used in the test; the housing may be identical to lamps available in the market but it does not limit its application. It is up to the end customer to enclose the driver and design the housing. Page 17 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 9.2 써멀결과 9.2.1 부하 : 85V/82mA LED 부하 Remarks Normal Operation Open Frame in the Thermal Chamber 190 V / 50 Hz Internal Ambient C BR C LYT0006D C L2;Power Inductor C Output Capacitor C Output Diode C -10-5.77 4.91-2.24-10.24-0.15 0 3.92 14.36 6.81-0.98 9.28 10 13.39 23.80 15.71 8.23 18.29 20 23.10 33.37 25.10 17.89 28.07 30 32.95 43.09 34.45 27.58 37.70 40 42.64 52.69 43.71 37.16 47.12 50 52.30 62.33 53.12 46.80 56.79 60 61.92 71.65 61.98 55.77 66.10 70 71.69 81.40 71.32 65.44 75.87 80 81.52 91.33 80.89 75.19 85.60 90 91.01 101.09 90.23 85.05 95.59 100 101.31 110.97 99.85 94.78 105.34 110 111.48 121.03 109.71 105.11 115.51 OTP; 190 V / 50 Hz 117 119.28 129.15 117.55 112.42 123.19 Recovery; 190 V / 50 Hz 53 58.08 62.83 65.18 61.33 61.86 190 V / 50 Hz Enclosed (30 C External Ambient) 64 54.28 78.39 74.10 70.15 67.79 265 V / 50 Hz Enclosed (30 C External Ambient) 65 54.30 81.11 76.26 71.11 69.66 Table 2 Thermal Measurement., Inc. Page 18 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 9.3 써멀스캔 Open-frame thermal measurement at 25 C ambient. UUT was soaked for 1 hour to achieve steady-state before the measurements were made. Figure 12 Temperature ( C) at Bottom Side of PCB. SP1 U1, LYT0006D. SP2 BR1, Bridge Rectifier. SP3 Ambient. Figure 13 Temperature ( C) at Top Side of PCB. SP1 Output Capacitor. SP2 L2, Power inductor. SP3 D1, Freewheeling Diode. SP4 Ambient. Page 19 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 10 파형 10.1 정상작동시드레인전압및전류 Missing pulses are normal and are used to regulate the output current. These missing pulses are present every time the sense resistors (R2, R3) voltage-drop reaches 1.65 V. The unit will enter into auto-restart if there is not at least one missing pulse within a 50 ms period. For some designs where the power inductance is high and the circuit is operating (mostly) in CCM, a period of reverse current may be present. This can be avoided by increasing the device size or increase input capacitance or adding a drain blocking diode. See AN-60 for additional information. Figure 14 190 VAC, 50 Hz, Nominal V LED Load. F1 (Orange): V D-S, 200 V / div. Ch1 (Yellow): V D-G, 100 V / div. Ch3 (Blue): I DRAIN, 100 ma / div. Time Scale: 1 ms / div. Figure 15 265 VAC, 50 Hz, Nominal V LED Load. F1 (Orange): V D-S, 200 V / div. Ch1 (Yellow): V D-G, 100 V / div. Ch3 (Blue): I DRAIN, 100 ma / div. Time Scale: 1 ms / div. Figure 16 190 VAC, 50 Hz, Nominal V LED Load. F1 (Orange): V D-S, 200 V / div. Ch3 (Blue): I DRAIN, 100 ma / div. Time Scale: 20 s / div. Figure 17 265 VAC, 50 Hz, Nominal V LED Load. F1 (Orange): V D-S, 200 V / div. Ch3 (Blue): I DRAIN, 100 ma / div. Time Scale: 20 s / div., Inc. Page 20 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 10.2 출력단락상태시드레인전압및전류 Device is operating within range, no inductor saturation was observed. Figure 18 LYT0006D Output Short. 265 VAC. Ch3: I DRAIN, 0.5 A / div. Time Scale: 2 ms / div. Z4: V D-S, 0.5 A / div. Zoom Time Scale: 10 s / div. Figure 19 LYT0006D Output Short. 265 VAC. Ch4: I DRAIN, 0.2 A / div. Time Scale: 10 s / div. Z4: V D-S, 0.2 A / div. Zoom Time Scale: 500 ns / div. 10.3 드레인전압및전류스타트업프로파일 Device is operating within range, no inductor saturation was observed. Figure 20 265 VAC / 50 Hz Start-up. Ch1: Bulk Input, 500 V / div. Ch3: Z4: I DRAIN, 0.5 A / div. Time Scale: 200 s / div. F1: V D-S, 500 V / div. Zoom Time Scale: 200 s / div. Figure 21 265 VAC / 50 Hz Start-up. Ch1: Bulk Input, 500 V / div. Ch3: Z4: I DRAIN, 0.5 A / div. Time Scale: 200 s / div. F1: V D-S, 500 V / div. Zoom Time Scale: 200 s / div. Page 21 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 10.4 출력전류스타트업프로파일 Output current/light is present within one AC cycle (<100 ms). Figure 22 190 VAC, 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 20 ms / div. Figure 23 230 VAC, 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 20 ms / div. Figure 24 240 VAC, 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 20 ms / div. Figure 25 265 VAC, 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 20 ms / div., Inc. Page 22 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 10.5 입력 - 출력프로파일 There is no limitation to the amount of output capacitance that can be added. If the application requires less output current ripple then increasing the output capacitance is straightforward. Note that the output current waveform below will change depending on LED load impedance which varies according to LED type. Figure 26 190 VAC / 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 10 ms / div. Figure 27 230 VAC / 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 10 ms / div. Figure 28 240 VAC / 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 10 ms / div. Figure 29 265 VAC / 50 Hz, Nominal V LED Load. Ch1 (Yellow): V IN, 100 V / div. Ch2 (Red): V OUT, 20 V. Ch3 (Blue): I IN, 50 ma / div. Ch4 (Green): I OUT, 20 ma / div, 10 ms / div. Page 23 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 10.6 라인새그및서지 An inherent advantage of the buck converter implemented with the LYTSwitch-0 family is the imperceptible start-up delay, the driver will turn-on within 100 ms as shown below. No failure of any component occurred during line fluctuation tests. Figure 30 Line Sag Test at 230-0 V at 0.1 Second Interval. Ch1: V IN, 100 V / div. Ch2: V OUT, 20 V / div. Ch4: I OUT, 50 ma / div. Time Scale: 500 ms / div. Figure 31 Line Surge Test at 230-265 V at 0.1 Second Interval. Ch1: V IN, 100 V / div. Ch2: V OUT, 20 V / div. Ch4: I OUT, 50 ma / div. Time Scale: 500 ms / div. Figure 32 Line Surge Test at 230-190 V at 0.1 Second Interval. Ch1: V IN, 100 V / div. Ch2: V OUT, 20 V / div. Ch4: I OUT, 50 ma / div. Time Scale: 500 ms / div. Figure 33 Line Sag Test at 230-0 V at 1 Second Interval. Ch1: V IN, 100 V / div. Ch2: V OUT, 20 V / div. Ch4: I OUT, 50 ma / div. Time Scale: 2 s / div., Inc. Page 24 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 10.7 원샷무부하보호 The reference design is protected with one shot no-load protection. Zener diode VR1 will need to be replaced after the fault. Figure 34 No-Load Protection When Load is Disconnected. 265 V / 50 Hz. Ch2: V OUT, 20 V / div. Ch3: I DRAIN, 100 ma / div. Ch3: I OUT, 50 ma / div. Time Scale: 200 ms / div. Figure 35 No-Load Start-Up. 265 V / 50 Hz. Ch2: V OUT, 20 V / div. Ch3: I DRAIN, 100 ma / div. Ch3: I OUT, 50 ma / div. Time Scale: 200 ms / div. Page 25 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 10.8 브라운아웃 / 브라운인 No failure of any component during brownout test of 1 V / sec and 10 V / sec AC cut-in and cut-off. Consider the peak current at 132 mapk with an average of 75 ma AVG during brown-out for LED absolute maximum rating. Figure 36 Brown-out Test at 1 V / s and 10 V / s. The Unit is Able to Operate Normally Without Any Failure and Without Flicker. 230 V - 0-230 V Ch1: V IN, 100 V / div. Ch1: V OUT, 20 V / div. Ch3: I OUT, 20 ma / div. Time Scale: 100 s / div. Figure 37 Brown-out Test at 1 V / s and 10 V / s. The Unit is Able to Operate Normally Without Any Failure and Without Flicker. 230 V - 0-230 V Ch1: V IN, 100 V / div. Ch1: V OUT, 20 V / div. Ch3: I OUT, 20 ma / div. Time Scale: 100 s / div., Inc. Page 26 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 11 라인서지 Differential input line 500V / 50 s surge testing was completed on a single test unit following the test method described in IEC61000-4-5. Input voltage was set at 230 VAC / 60 Hz. Full output load applied and operation was verified following each surge event. Surge Level (V) Input Voltage (VAC) Injection Location Injection Phase ( ) Test Result (Pass/Fail) +500 230 L to N 90 Pass -500 230 L to N 90 Pass +500 230 L to N 270 Pass -500 230 L to N 270 Pass +500 230 L to N 0 Pass -500 230 L to N 0 Pass Unit passed testing under all conditions. Differential ring input line surge testing was completed on a single test unit following the test method described in IEC61000-4-5. Input voltage was set at 230 VAC / 60 Hz. Full output load was applied and operation was verified following each surge event. Surge Level (V) Input Voltage (VAC) Injection Location Injection Phase ( ) Test Result (Pass/Fail) +2500 230 L to N 90 Pass -2500 230 L to N 90 Pass +2500 230 L to N 270 Pass -2500 230 L to N 270 Pass +2500 230 L to N 0 Pass -2500 230 L to N 0 Pass Unit passed testing under all conditions. Page 27 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 Figure 38 Differential Line Surge at 500 V / 90. Peak Drain Voltage Recorded is 680 V. Ch1: V BULK, 100 V / div. F1: V DRAIN, 200 V / div. Time Scale: 100 s / div. Figure 39 Differential Line Surge at 500 V / 90. Peak Drain Voltage Recorded is 427 V. Ch1: V BULK, 100 V / div. F1: V DRAIN, 200 V / div. Time Scale: 100 s / div. Figure 40 Differential Ring Surge at 2500 V / 90. Peak Drain Voltage Recorded is 505 V. Ch1: V BULK, 100 V / div. F1: V DRAIN, 200 V / div. Time Scale: 500 s / div. Figure 41 Differential Ring Surge at 2500 V / 0. Peak Drain Voltage Recorded is 404 V. Ch1: V BULK, 100 V / div. F1: V DRAIN, 200 V / div. Time Scale: 500 s / div., Inc. Page 28 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 12 전도성 EMI Figure 42 The Retrofit Lamp was Verified Inside a Conical Metal Cone as per EN55015. Page 29 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 P o w e r I n t e g r a t i o n s 0 3. J u l 1 3 2 1 : 0 0 A t t 1 0 d B A U T O R B W 9 k H z M T 5 0 0 m s dbµv 120 E N 5 5 0 1 5 Q 110 1 0 0 k H z 1 M H z 1 0 M H z L I M I T C H E C K P A S S 1 QP CLRWR 2 AV CLRWR 100 90 80 SGL TDF 70 60 50 E N 5 5 0 1 5 A 40 6DB 30 20 10 0-10 -20 9 k H z 3 0 M H z Figure 43 Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, and EN55015 B Limits. Enclosed Unit in a Typical A19 Bulb Replacement Housing. Date: 3.JUL.2013 21:00:35, Inc. Page 30 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D E D I T P E A K L I S T ( F i n a l M e a s u r e m e n t R e s u l t s ) T r a c e 1 : E N 5 5 0 1 5 Q T r a c e 2 : E N 5 5 0 1 5 A T r a c e 3 : - - - T R A C E F R E Q U E N C Y L E V E L d B µ V D E L T A L I M I T d B 2 A v e r a g e 9. 0 9 k H z 2 3. 5 7 N g n d 2 A v e r a g e 1 2 5. 7 2 0 6 3 3 8 1 9 k H z 2 8. 3 2 N g n d 2 A v e r a g e 1 2 9. 5 3 0 0 9 4 7 4 4 k H z 2 7. 8 3 L 1 g n d 2 A v e r a g e 1 9 2. 3 6 4 7 9 9 2 5 3 k H z 3 0. 6 4 L 1 g n d - 2 3. 2 9 2 A v e r a g e 2 5 6. 7 1 1 5 7 0 3 1 8 k H z 3 5. 3 8 N g n d - 1 6. 1 5 1 Q u a s i P e a k 2 5 9. 2 7 8 6 8 6 0 2 1 k H z 4 6. 5 9 L 1 g n d - 1 4. 8 5 1 Q u a s i P e a k 3 1 0. 1 3 5 5 4 5 7 8 3 k H z 4 2. 0 5 L 1 g n d - 1 7. 9 0 2 A v e r a g e 3 2 2. 7 2 8 2 9 2 5 8 6 k H z 3 0. 2 8 N g n d - 1 9. 3 5 1 Q u a s i P e a k 3 8 9. 8 9 0 9 3 8 8 3 4 k H z 3 9. 1 5 L 1 g n d - 1 8. 9 0 2 A v e r a g e 4 5 2. 6 5 1 2 7 5 9 6 6 k H z 2 8. 6 3 N g n d - 1 8. 1 9 1 Q u a s i P e a k 4 5 7. 1 7 7 7 8 8 7 2 6 k H z 4 0. 3 1 N g n d - 1 6. 4 2 1 Q u a s i P e a k 5 0 5. 0 0 8 7 0 0 6 7 3 k H z 4 0. 1 8 L 1 g n d - 1 5. 8 1 2 A v e r a g e 5 1 0. 0 5 8 7 8 7 6 8 k H z 2 8. 5 9 N g n d - 1 7. 4 0 1 Q u a s i P e a k 5 8 6. 2 9 9 4 2 3 6 7 3 k H z 3 9. 7 7 L 1 g n d - 1 6. 2 2 1 Q u a s i P e a k 6 4 7. 6 3 9 3 1 5 5 0 5 k H z 4 3. 7 4 L 1 g n d - 1 2. 2 5 2 A v e r a g e 6 4 7. 6 3 9 3 1 5 5 0 5 k H z 3 0. 7 0 N g n d - 1 5. 2 9 1 Q u a s i P e a k 6 8 0. 6 7 5 4 2 9 4 3 6 k H z 3 8. 4 2 L 1 g n d - 1 7. 5 7 1 Q u a s i P e a k 9 0 8. 3 6 3 9 9 9 2 6 6 k H z 4 7. 3 1 L 1 g n d - 8. 6 8 2 A v e r a g e 9 0 8. 3 6 3 9 9 9 2 6 6 k H z 3 3. 0 1 N g n d - 1 2. 9 8 1 Q u a s i P e a k 1. 0 6 5 1 2 8 2 2 7 3 6 M H z 3 9. 0 4 L 1 g n d - 1 6. 9 5 Table 3 Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, and EN55015 B Limits. Enclosed Unit in a Typical A19 Bulb Replacement Housing. Date: 3.JUL.2013 21:00:05 Page 31 of 33

RDR-378 7 W Non-Isolated Buck Using LYT0006D 04-Oct-13 13 개정내역 날짜 작성자 개정 Description & changes Reviewed 04-Oct-13 JDC 1.0 Initial Release Apps & Mktg, Inc. Page 32 of 33

04-Oct-13 RDR-378 7 W Non-Isolated Buck Using LYT0006D 최신업데이트에대한자세한내용은당사웹사이트 () 를참고하십시오. 파워인테그레이션스 () 는안정성또는생산성향상을위하여언제든지당사제품을변경할수있는권한이있습니다. 파워인테그레이션스 () 는여기서설명하는디바이스나회로사용으로인해발생하는어떠한책임도지지않습니다. 파워인테그레이션스 () 는어떠한보증도제공하지않으며모든보증 ( 상품성에대한묵시적보증, 특정목적에의적합성및타사권리의비침해를포함하되이에제한되지않음 ) 을명백하게부인합니다. 특허정보여기에설명한제품및애플리케이션 ( 제품의외장트랜스포머구성및회로포함 ) 은하나이상의미국및해외특허의대상이되거나파워인테그레이션스 () 에서출원중인미국및해외특허신청의대상이될수있습니다. 파워인테그레이션스 () 의전체특허목록은 에서확인할수있습니다. 파워인테그레이션스 () 는고객에게 http:///ip.htm. 에명시된특정특허권에따라라이센스를부여합니다. PI 로고, TOPSwitch, TinySwitch, LinkSwitch, LYTSwitch, DPA-Switch, PeakSwitch, CAPZero, SENZero, LinkZero, HiperPFS, HiperTFS, HiperLCS, Qspeed, EcoSmart, Clampless, E-Shield, Filterfuse, StackFET, PI Expert 및 PI FACTS 는 Power Integrations, Inc 의상표입니다. 다른상표는각회사고유의자산입니다. Copyright 2013, Inc. 파워인테그레이션스 () 전세계판매지원지역 세계본사 5245 Hellyer Avenue San Jose, CA 95138, USA. 본사전화 : +1-408-414-9200 고객서비스 : 전화 : +1-408-414-9665 팩스 : +1-408-414-9765 전자메일 : usasales@powerint.com 중국 ( 상하이 ) Rm 1601/1610, Tower 1, Kerry Everbright City No. 218 Tianmu Road West, Shanghai, P.R.C. 200070 전화 : +86-21-6354-6323 팩스 : +86-21-6354-6325 전자메일 : chinasales@powerint.com 중국 ( 센젠 ) 3rd Floor, Block A, Zhongtou International Business Center, No. 1061, Xiang Mei Rd, FuTian District, ShenZhen, China, 518040 전화 : +86-755-8379-3243 팩스 : +86-755-8379-5828 전자메일 : chinasales@powerint.com 독일 Lindwurmstrasse 114 80337, Munich Germany 전화 : +49-895-527-39110 팩스 : +49-895-527-39200 전자메일 : eurosales@powerint.com 인도 #1, 14 th Main Road Vasanthanagar Bangalore-560052 India 전화 : +91-80-4113-8020 팩스 : +91-80-4113-8023 전자메일 : indiasales@powerint.com 이탈리아 Via Milanese 20, 3 rd. Fl. 20099 Sesto San Giovanni (MI) Italy 전화 : +39-024-550-8701 팩스 : +39-028-928-6009 전자메일 : eurosales@powerint.com 일본 Kosei Dai-3 Building 2-12-11, Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa 222-0033 Japan 전화 : +81-45-471-1021 팩스 : +81-45-471-3717 전자메일 : japansales@powerint.com 한국 RM 602, 6FL Korea City Air Terminal B/D, 159-6 Samsung-Dong, Kangnam-Gu, Seoul, 135-728 Korea 전화 : +82-2-2016-6610 팩스 : +82-2-2016-6630 전자메일 : koreasales@powerint.com 싱가포르 51 Newton Road, #19-01/05 Goldhill Plaza Singapore, 308900 전화 : +65-6358-2160 팩스 : +65-6358-2015 전자메일 : singaporesales@powerint.com 대만 5F, No. 318, Nei Hu Rd., Sec. 1 Nei Hu District Taipei 11493, Taiwan R.O.C. 전화 : +886-2-2659-4570 팩스 : +886-2-2659-4550 전자메일 : taiwansales@powerint.com 유럽본사 1st Floor, St. James s House East Street, Farnham Surrey GU9 7TJ United Kingdom 전화 : +44 (0) 1252-730-141 팩스 : +44 (0) 1252-727-689 전자메일 : eurosales@powerint.com 애플리케이션문의전화전세계통합번호 +1-408- 414-9660 애플리케이션문의팩스전세계통합번호 +1-408- 414-9760 Page 33 of 33