DEMO MANUAL DC1816B LT3799-1 Offline Isolated Flyback LED Driver with PFC Description Demonstration circuit 1816B is an off-line isolated flyback LED driver featuring LT®3799-1. The demo board provides a single constant current output of 3A over an LED string voltage from 22V to 38V. It is optimized to operate over a wide AC input voltage range (90VAC to 305VAC, 47Hz to 63Hz). LED current typically stays within ±5% over the whole input voltage range. 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 Performance Summary CONDITIONS Input Voltage Range Line Frequency, 47Hz to 63Hz Output Current IOUT VIN = 120VAC, VLED = 36V Open LED Voltage (Note 1) The LT3799-1 is available in a low profile, thermallyenhanced 16-lead MSOP package. 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 1816B. 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 = 25°C) PARAMETER Output Voltage without using an opto-coupler. Open- and shorted-LED protection ensures long term reliability. MIN TYP MAX UNITS 90 277 305 VAC 22 36 3 A 38 V 45 V Note 1: For applications with low LED string voltage, FB pin divider resistor R4 and output clamp Z3 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. dc1816bfc 1 DEMO MANUAL DC1816B 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 1816B 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 3A LED string with forward voltage less than 38V, but greater than 22V, 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 (305VAC). 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 dc1816bfc 2 DEMO MANUAL DC1816B quick start procedure 0.98 80 70 POWER FACTOR 3.5 ILED (A) EFFICIENCY (%) 90 3.0 2.5 60 50 1.00 4.0 100 90 110 130 150 170 190 210 230 250 270 290 305 VIN (AC-RMS) 2.0 0.94 0.92 90 110 130 150 170 190 210 230 250 270 290 305 VIN (AC-RMS) 0.90 90 110 130 150 170 190 210 230 250 270 290 305 VIN (AC-RMS) DC1816B F04 DC1816B F03 DC1816B F02 Figure 2. Efficiency vs Input Voltage 0.96 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 1A/DIV IIN AC 1A/DIV 5ms/DIV 5ms/DIV DC1816B F05 DC1816B F06 Figure 6. VIN = 277VAC Figure 5. VIN = 120VAC Switch Node Voltage VSW 100V/DIV VSW 100V/DIV 5µs/DIV Figure 7. VIN = 120VAC DC1816B F07 5µs/DIV DC1816B F08 Figure 8. VIN = 277VAC dc1816bfc 3 DEMO MANUAL DC1816B quick start procedure Output Voltage and Switch Node Voltage During Output Open IC VIN 20V/DIV IC VIN 20V/DIV VOUT 20V/DIV VOUT 20V/DIV VSW 200V/DIV VSW 200V/DIV 500ms/DIV 500ms/DIV DC1816B F09 DC1816B F10 Figure 10. VIN = 277VAC Figure 9. VIN = 120VAC Output Current and Switch Node Voltage During Output Short IC VIN 20V/DIV IC VIN 20V/DIV IOUT 5A/DIV IOUT 5A/DIV VSW 200V/DIV VSW 200V/DIV 500ms/DIV Figure 11. VIN = 120VAC DC1816B F11 500ms/DIV DC1816B F12 Figure 12. VIN = 277VAC dc1816bfc 4 DEMO MANUAL DC1816B Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 C1 CAP, 0.47µF 20% 310V POLYPROPYLENE VISHAY BFC33820474 2 1 C2 CAP, 0.47µF 20% 450V FILM RUBYCON 450MMK474K 3 1 C3 CAP, 22µF 20% 35V ALUM NIC NRSZ220M35V5X11F 4 1 C6 CAP, 0603 10nF 10% 50V X7R AVX 06035C103KAT2A 5 1 C7 CAP, 0603 0.1µF 10% 50V X7R AVX 06035C104KAT2A 6 1 C8 CAP, 0805 4.7µF 20% 16V X5R AVX 0805YD475MAT2A 7 1 C9 CAP, 2220 10µF 20% 100V X7S TDK C5750X7S2A106M 8 2 C10, C11 CAP, 1000µF 20% 63V ELEC PANASONIC EEU-FC1J102 9 1 C13 CAP, 1210 2.2nF 5% 630V U2J MURATA GRM32A7U2J222JW31D 10 1 C20 CAP, 2.2nF 10% Y5B TYPE “Y1” VISHAY 440LD22-R 11 1 C21 CAP, 0603 4.7pF ±0.1pF 50V NP0 AVX 06035A4R7CAT2A 12 4 D1, D2, D3, D4 DIODES, RECTIFIER 1.0A DIODES INC. 1N4005-T 13 2 D5, D6 DIODE, FAST SWITCHING DIODES INC. BAV20W-7-F 14 1 D7 DIODE, ULTRA FAST RECOVERY SILICON RECTIFIER CENTRAL SEMI.CMR1U-10M 15 1 D8 DIODE, SUPER BARRIER RECTIFIER 10A DIODES INC. SBR10U300CT 16 1 D9 DIODE, RECOVERY RECTIFIER CENTRAL SEMI.CMR1U-02M 17 1 F1 FUSE, FAST ACTING 3.15A BUSSMAN SS-5H-3.15A-APH 18 2 L1,L2 IND, 10mH COMMON MODE CHOKE SUMIDA LF2628NP-103 19 1 L3 IND, 150µH LINE CHOKE WÜRTH ELECTRONIK 7447018 20 1 Q1 XSTR, COOL MOS POWER TRANSISTOR INFINEON SPP17N80C3 21 2 R1, R2 RES, 1206 249k 1% 1/4W VISHAY CRCW1206249KFKEA 22 2 R3, R18 RES, 0603 100k 5% 1/10W VISHAY CRCW0603100KJNEA 23 1 R4 RES, 0603 4.32k 1% 1/10W VISHAY CRCW06034K32FKEA 24 1 R5 RES, 0603 20Ω 5% 1/10W VISHAY CRCW060320R0JNEA 25 1 R6 RES, 2512 200k 5% 1W VISHAY CRCW2512200KJNEG 26 1 R7 RES, 0603 2k 5% 1/10W VISHAY CRCW06032K00JNEA 27 1 R8 RES, 1206 0.015Ω 1% 1/4W VISHAY WSL1206R0150FEA 28 1 R9 RES, 1206 10k 1% 1/4W VISHAY CRCW120610K0FKEA 29 2 R10, R11 RES, 1206 499k 1% 1/4W VISHAY CRCW1206499KFKEA 30 1 R12 RES, 0603 3.09k 1% 1/10W VISHAY CRCW06033K09FKEA 31 1 R19 RES, 0603 40.2k 1% 1/10W NIC NRC06F4222TRF 32 1 R20 RES, 0603 16.9k 1% 1/10W VISHAY CRCW060316K9FKEA 33 1 R21 RES, 0603 0Ω JUMPER VISHAY CRCW06030000Z0EA 34 1 R25 RES, 0603 17.8Ω 1% 1/10W VISHAY CRCW060317R8FKEA 35 1 T1 XFMR, FLYBACK WÜRTH ELECTONIK 750811351 36 1 U1 IC, OFFLINE ISOLATED LED CONTROLLER LINEAR TECH. LT3799EMSE-1 37 1 V1 VARISTOR, 385V RMS 13.5MM RADIAL SEI CV385K10B 38 1 Z2 DIODE, TRANSIENT VOLTAGE SUPPRESSOR DIODES INC. SMBJ130(C)A-13-F 39 1 Z3 DIODE, TRANSIENT VOLTAGE SUPPRESSOR DIODES INC. SMCJ40(C)A-13-F 40 1 Z4 DIODE, TRANSIENT VOLTAGE SUPPRESSOR LITTELFUSE INC. SMCJ220CA dc1816bfc 5 DEMO MANUAL DC1816B parts list ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Additional Demo Board Circuit Components 1 0 C14 CAP, 1206 100pF 5% 1000V U2J MURATA GRM31A7U3A101JW31D 2 0 D10 DIODE, ULTRA FAST RECOVERY SILICON RECTIFIER CENTRAL SEMI. CMR1U-10M 3 0 R13 RES, 1206 10k 1% 1/2W VISHAY CRCW120610K0JNEAHP 4 0 R22 RES, 0603 Hardware—For Demo Board Only 1 2 HS1, HS2 HEAT SINK, TO-220 AAVID THERMALLOY 529802B02500G 2 2 J1, J2 TERMINAL BLOCK, 2 POSITION WEIDMULLER 1715250000 3 1 NUT, TIN PLATE#4-40 ANY, #4-40 4 1 WASHER, #4, FLAT WASHER ANY 5 1 SCREW, 4/40 X 3/8 ANY, 4/40 X 3/8, PHILIPS SCREW 6 1 NUT, TIN PLATE# 2-56 ANY, #2-56 7 1 WASHER, #2, FLAT WASHER ANY 8 1 SPACER, NYLON SHOULDER KEYSTONE, 3051 9 1 SCREW, 2-56 X 3/8 ANY, 2-56 X 3/8 PHILIPS SCREW 10 1 THERMAL PAD BERGQUIST, SP600-58 11 1 SILICONE HEAT SINK RAWN 12 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1816B 13 1 STENCIL STENCIL DC1816B dc1816bfc 6 DEMO MANUAL DC1816B Schematic Diagram dc1816bfc 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. 7 DEMO MANUAL DC1816B 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 © 2004, Linear Technology Corporation dc1816bfc 8 Linear Technology Corporation LT 0413 REV C • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2011