DEMO MANUAL DC1947A LT3799-1 Offline Isolated Flyback LED Driver with PFC DESCRIPTION Demonstration circuit 1947A is an off-line isolated flyback LED driver featuring LTC(R)3799-1 . The demo board provides a single constant current output of 1A over an LED string voltage from 30V to 50V. It is optimized to operate over a wide AC input voltage range (90VAC to 277VAC, 47Hz to 63Hz). It provides a high power factor (>0.9) enabling a single design to be used worldwide. It is also designed to comply with the IEC 61000-3-2 Class C harmonics standard and the EN55015B conducted EMI standard. The LT3799-1 controls an isolated flyback converter in boundary mode. Its novel current sensing scheme delivers a well-regulated output current to the secondary side without using an opto-coupler. Open- and shorted-LED protection ensures long term reliability. PERFORMANCE SUMMARY CONDITIONS Input Voltage Range Line Frequency, 47Hz to 63Hz Output Current IOUT VIN = 120VAC, VLED = 48V Open LED Voltage The LT3799-1 data sheet gives a complete description of the device, operation and application information. The data sheet must be read in conjunction with this quick start guide for demo circuit 1947A. Design files for this circuit board are available at http://www.linear.com/demo L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. (TA = 25C) PARAMETER Output Voltage The LT3799-1 is available in a low profile, thermallyenhanced 16-lead MSOP package. MIN TYP MAX UNITS 90 230 277 VAC 1 30 (Note 1) 48 A 50 V 54 V Note 1: For applications with low LED string voltage, FB pin divider resistor R4 and output clamp D9 can be adjusted to reduce the open voltage limit. See "Protection from Open LED and Shorted LED Faults" section in the data sheet for detail. dc1947af 1 DEMO MANUAL DC1947A QUICK START PROCEDURE IMPORTANT NOTE TO CUSTOMERS HIGH VOLTAGES ARE PRESENTED ON THE DEMO CIRCUIT, AND CAN LEAD TO LETHAL INJURIES TO HUMAN BODY. ONLY QUALIFIED PERSONNEL SHOULD OPERATE IT. IT IS STRONGLY RECOMMENDED TO USE SAFETY GLASSES AND AN ISOLATION TRANSFORMER. NOTE. IMPROPER COMPONENTS REPLACEMENT ON THE DEMO CIRCUIT CAN CAUSE PERFORMANCE DETERIORATIONS, CIRCUIT MALFUNCTION, PROPERTY DAMAGE, AND EVEN LIFE-THREATENING INJURIES. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERS FOR PROPER COMPONENT REPLACEMENT. Demonstration circuit 1947A is easy to set up to evaluate the performance of the LT3799-1. Refer to Figure 1 for proper measurement equipment setup and follow the procedure below: 1. Connect a 1A LED string with forward voltage less than 50V, but greater than 30V, between LED+ and LED- terminals. 2. With power off, connect the input power supply to line (L) input and neutral (N) input. 3. Turn on the power at the input. NOTE. Make sure that the input voltage does not exceed the maximum input voltage (277VAC). 4. Check for the proper output current. Once the proper output currents are established, adjust the input voltage and/or the load and observe the output current regulation, efficiency, power factor and other parameters. Figure 1. Proper Measurement Equipment Setup dc1947afb 2 DEMO MANUAL DC1947A QUICK START PROCEDURE 100 0.98 90 80 POWER FACTOR 1.2 ILED (A) EFFICIENCY (%) 1.00 1.4 1.0 70 0.8 60 50 0.96 0.94 0.92 0.90 0.6 90 110 130 150 170 190 210 230 250 270 VIN (AC-RMS) 90 110 130 150 170 190 210 230 250 270 VIN (AC-RMS) 90 110 130 150 170 190 210 230 250 270 VIN (AC-RMS) DC1947a F02 DC1947a F03 DC1947a F04 Figure 2. Efficiency vs Input Voltage Figure 3. IOUT vs Input Voltage Figure 4. Power Factor vs Input Voltage Input Line Voltage and Current VIN AC 200V/DIV VIN AC 200V/DIV IIN AC 500mA/DIV IIN AC 500mA/DIV 5ms/DIV 5ms/DIV DC1947a F05 DC1947a F06 Figure 6. VIN = 230VAC Figure 5. VIN = 120VAC Switch Node Voltage VSW 100V/DIV VSW 100V/DIV 5s/DIV Figure 7. VIN = 120VAC DC1947a F07 5s/DIV DC1947a F08 Figure 8. VIN = 230VAC dc1947af 3 DEMO MANUAL DC1947A QUICK START PROCEDURE Output Voltage and Switch Node Voltage During Output Open VOUT 10V/DIV VOUT 10V/DIV VSW 200V/DIV VSW 200V/DIV 200ms/DIV DC1947a F09 200ms/DIV DC1947a F10 Figure 10. VIN = 230VAC Figure 9. VIN = 120VAC Output Current and Switch Node Voltage During Output Short IOUT 10A/DIV IOUT 10A/DIV IC VIN 100V/DIV IC VIN 100V/DIV VSW 200V/DIV VSW 200V/DIV 200ms/DIV Figure 11. VIN = 120VAC DC1947a F11 200ms/DIV DC1947a F12 Figure 12. VIN = 230VAC dc1947afb 4 DEMO MANUAL DC1947A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 B1 RECTIFIER, BRIDGE 600V, 0.8A DIODES INC., HD06-T 2 1 CAC1 CAP, 0.1F, 310V, 20% VISHAY, BFC233922104 3 1 C2 CAP, FILM, 0.22F, 450V, 10% RUBYCON, 450MPH224K 4 1 C3 CAP, 10F, 20%, 50V, ALUM RUBYCON, 50YXJ10M 5X11 5 2 C6, C7 CAP, X7R, 0.01F, 50V, 10%, 0805 Murata, GRM216R71H103KA01D 6 1 C8 CAP, X5R, 4.7F, 16V, 20%, 0805 AVX, 0805YD475MAT2A 7 1 C9 CAP, C0G, 47pF, 50V, 10%, 0805 AVX, 08055A470KAT 8 1 C10, C11 CAP, ELEC., 330F, 63V, 20% RUBYCON, 63ZL330MEF 9 1 C13 CAP, U2J, 1.5nF, 250V, 5%, 0805 Murata, GRM21A7U2E152JW31D 10 1 C20 CAP, 2.2nF, 10%, TYPE "Y1" VISHAY, 440LD22-R 11 1 C21 CAP, C0G, 4.7pF, 50V, 0805 AVX, 08055A4R7BAQ2A 12 1 C23 CAP, X7R, 1F, 100V, 10%, 1206 AVX 12061C105KAT2A 13 1 D1 DIODE, ULTRA FAST RECTIFIER CENTRAL SEMI.CMR1U-10M 14 2 D2, D8 DIODE, FAST SWITCHING DIODES INC., BAV20W-7-F 15 1 D3 DIODE, 3A Ultra-Fast REC., Power-DI-5 DIODES INC., PDU340-13 16 1 D4 DIODE, TVS, 600W, 170V, SMB DIODES INC., SMBJ170A-13-F 17 1 D9 DIODE, TVS, 600W, 48V, SMB DIODES INC. SMBJ48A-13-F 18 1 F1 FUSE, 2.5A BUSSMAN, SS-5H-2.5A 19 1 L1 INDUCTOR, 1mH, TDK, TSL1315RA-102JR78-PF 20 1 L2 CHOKE, D Code Double Choke EPCOS, B82731H2701A030 21 1 Q1 XSTR, MOSFET, N-CHANNEL 650V INFINEON, IPB60R165CP 22 2 R1, R2 RES, CHIP., 249k, 1%, 1/4W, 1206 VISHAY, CRCW0805249KFKEA 23 1 R3 RES, CHIP., 200k, 1%, 1/8W, 0805 VISHAY, CRCW0805200KFKEA 24 1 R4 RES, CHIP., 9.31k, 1%, 1/8W, 0805 VISHAY, CRCW08059K31FKEA 25 1 R5 RES, CHIP., 150, 1%, 1/8W, 0805 VISHAY, CRCW0805150RFKEA 26 1 R7 RES, CHIP., 10k, 1%, 1/8W, 0805 VISHAY, CRCW080510KFKEA 27 1 R8 RES, CHIP., 0.03, 1/4W, 1%, 1206 VISHAY, WSL1206R0300FEA 28 2 R10, R11 RES, CHIP., 499k, 1%, 1/4W, 1206 VISHAY, CRCW1206499KFKEA 29 1 R18 RES, CHIP., 100k, 1%, 1/8W, 0805 VISHAY, CRCW0805100KFKEA 30 1 R19 RES, CHIP., 40.2k, 1%, 1/8W, 0805 VISHAY, CRCW080540K2FKEA 31 2 R20, R27 RES, CHIP., 20k, 1%, 1/8W, 0805 VISHAY, CRCW080520KFKEA 32 1 R21 RES, CHIP., 0, 1/8W, 0805 VISHAY, CRCW08050000Z0EA 33 1 R23 RES, CHIP., 3.48k, 1%, 1/8W, 0805 VISHAY, CRCW08053K48FKEA 34 1 R25 RES, CHIP., 20, 5%, 1/8W, 0805 VISHAY, CRCW080520R0JKEA 35 2 R32, R33 RES, CHIP., 200k, 1%, 1/2W, 1210 VISHAY, CRCW1210200KFKEA 36 1 T1 XFMR, FLYBACK WURTH ELECTONIK, 750817251 37 1 U1 IC., Isolated Flyback Controller LINEAR TECH. LT3799EMSE-1#PBF 38 1 V1 VARISTOR, 385V Stackpole Electronic, Inc. CV385K10R dc1947af 5 DEMO MANUAL DC1947A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Additional Demo Board Circuit Components 1 0 R22(OPT) RES, CHIP., 0805 Hardware--For Demo Board Only 1 2 J1, J2 TERMINAL BLOCK, 2 POSITION WEIDMULLER, 1715250000 2 4 MH1 to MH4 STAND-OFF, NYLON,0.25" KEYSTONE, 8831(SNAP ON) dc1947afb 6 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. A B C V1 L CV385K10R 1 4 2 1 B1 HD06 L1 1mH F1 300V, 2.5A SS-5H-2.5A C2 0.22uF 450VDC FILM 5 1. ALL CAPACITORS AND RESISTORS ARE 0805. NOTES: UNLESS OTHERWISE SPECIFIED, 2 310VAC CAC1 0.1uF 3 L2 27mH B82731H2701A030 2 1 N J1 2 90 - 277VAC - D 4 R18 100k 1% 3.48K R23 R11 499k 1% 1206 R10 499k 1% R20 20k 1% R19 40.2k 1% R2 249k 1% 1206 R1 249k 1% 1206 4 R22 OPT R21 0 D8 BAV20W 5 1 2 3 4 12 16 C3 D2 BAV20W R5 150 10uF 50V C7 10nF FAULT CTRL1 CTRL2 CTRL3 VREF NC VINSENSE 6 1 4 + CAUTION: HANDLING HIGH VOLTAGE INVOLVES RISK TO LIFE. COMPLY WITH SAFETY REGULATIONS! + 3 11 VIN CT 10 FB R7 10k C21 4.7pF COMP+ COMP- INTVCC SENSE GATE DCM GND 17 5 C6 10nF C8 4.7uF 16V 0805 20 R25 3 R32 200k 1210 C13 1.5nF 0805 250V T1 750817251 7+,6&,5&8,7,635235,(7$5<72/,1($57(&+12/2*<$1' 6833/,(')2586(:,7+/,1($57(&+12/2*<3$576 (1* 2 -: :(,* 3&%'(6 $33529$/6 Y1 C20 2200pF 11 10 9 8 2 + '$7( N/A 6,=( C11 330uF 63V 2 1 J2 1 LT3799EMSE-1 DC1947A Wednesday, November 28, 2012 ,&12 LED- LED+ 6+((7 1 2) 1 2 5(9 0F&DUWK\%OYG 0LOSLWDV&$ 3KRQH )D[ /7&&RQILGHQWLDO)RU&XVWRPHU8VH2QO\ R27 20k 0805 DATE 08-15-12 1A / 48V APPROVED WEI G. 48W OFFLINE ISOLATED FLYBACK LED CONTROLLER WITH ACTIVE PFC TECHNOLOGY + PRODUCTION 1 D9 SMBJ48A REVISION HISTORY DESCRIPTION C10 330uF 63V 7,7/( 6&+(0$7,& C23 1uF 100V 1206 REV D3 PDU340 &2175$&712 R8 0.03 1206 Q1 IPB60R165CP 5 4 6 3 2 1 ECO &86720(5127,&( D1 CMR1U-10M R33 200k 1210 2 /,1($57(&+12/2*<+$60$'($%(67())25772'(6,*1$ &,5&8,77+$70((76&86720(56833/,('63(&,),&$7,216 +2:(9(5,75(0$,167+(&86720(5 65(63216,%,/,7<72 9(5,)<3523(5$1'5(/,$%/(23(5$7,21,17+($&78$/ $33/,&$7,21&20321(1768%67,787,21$1'35,17(' &,5&8,7%2$5'/$<2870$<6,*1,),&$17/<$))(&7&,5&8,7 3(5)250$1&(255(/,$%,/,7<&217$&7/,1($5 7(&+12/2*<$33/,&$7,216(1*,1((5,1*)25$66,67$1&( C9 47pF D4 SMBJ170A LT3799EMSE-1 U1 7 8 13 15 14 9 R4 9.31k 1% R3 200k 1% 3 A B C D DEMO MANUAL DC1947A SCHEMATIC DIAGRAM dc1947af 7 DEMO MANUAL DC1947A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user's responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright (c) 2004, Linear Technology Corporation dc1947afb 8 Linear Technology Corporation LT 0113 * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 2013