DC1595A

DEMO MANUAL DC1595A LT3799 Offline Isolated Flyback Led Controller with PFC DESCRIPTION Demonstration circuit 1595A is an off-line isolated flyback converter featuring LT3799. The demo board is designed to drive a 20V nominal LED string at 1A from an input voltage range of 90VAC to 270VAC. It is also designed to comply with IEC 61000-3-2 Class C harmonics standard and EN55015B conducted EMI standard. The LT3799 controls an isolated flyback converter in boundary mode, suitable for LED applications requiring 4W to over 100W of LED power. Its novel current sensing scheme delivers a well regulated output current to the secondary side without using an opto-coupler. Its unique bleeder circuit makes the LED driver compatible with PERFORMANCE SUMMARY TRIAC dimmers without additional components. Openand shorted-LED protection ensures long term reliability. The LT3799 is available in a low profile, thermally enhanced 16-lead MSOP package. The LT3799 datasheet gives a complete description of the part, operation and application information. The datasheet must be read in conjunction with this quick start guide for demo circuit 1595A. 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 CONDITIONS VALUE Input Range Line Frequency, 50Hz/60Hz 90VAC to 270VAC Output Current IOUT VIN = 120VAC 1A Maximum Output Voltage 25V Minimum Output Voltage 16V dc1595afb 1 DEMO MANUAL DC1595A 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 PERSONEL 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-THREATHENING INJURIES. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERS FOR PROPER COMPONENT REPLACEMENT. Demonstration circuit 1595A is easy to set up to evaluate the performance of the LT3799. Refer to Figure 1 for proper measurement equipment setup and complete the following procedure: 1. Connect a 1A LED string 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 (270VAC). 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 dc1595afb 2 DEMO MANUAL DC1595A QUICK START PROCEDURE 100 EFFICIENCY (%) 95 90 85 80 75 70 90 110 130 150 170 190 210 230 250 270 VIN (AC-RMS) Figure 2. Efficiency vs VIN 1.2 1.0 ILED (A) 0.8 220V APPLICATION 0.6 120V APPLICATION 0.4 0.2 0 0 30 120 90 60 150 TRIAC ANGLE (DEGREES) 180 Figure 3. LED Current vs TRIAC Angle 1.00 0.99 POWER FACTOR ( ) 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 90 110 130 150 170 190 210 230 250 270 VIN (VAC) Figure 4. Power Factor vs Input Voltage dc1595afb 3 DEMO MANUAL DC1595A 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 C1 CAP, 0.068μF 20% 305VAC MKP VISHAY BFC2 339 20683 3 1 C2 CAP, 0.1μF 10% 450V RUBYCON 450MMK104J 4 1 C3 CAP, 10μF 20% 50V ALUM RUBYCON 50YXJ10M 5X11 5 1 C4 CAP, 0.22μF 20% 450V FILM RUBYCON 450MMK 224K 6 1 C6 CAP, 0603 0.015μF 10% 50V X7R AVX 06035C153KAT2A 7 1 C7 CAP, 0603 0.1μF 10% 50V X7R AVX 06035C104KAT2A 8 1 C8 CAP, 0805 4.7μF 20% 16V X5R AVX 0805YD475MAT2A 9 2 C10, C11 CAP, 560μF 20% 35V ELEC RUBYCON 35ZLJ560M 10X20 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 1 D1 DIODE, FAST SWITCHING DIODES INC. US1J-13-F 13 2 D2, D8 DIODE, FAST SWITCHING DIODES INC. BAV20W-7-F 14 1 D5 DIODE, 150V , 1A, SBR DIODES INC. SBR1U150SA 15 1 F1 FUSE, 1A BUSSMAN SS-5H-1A 16 1 L1 IND, 33mH WURTH ELECTRONIK 7448640418 17 1 L2 IND, 750μH WURTH ELECTRONIK 750311431 18 1 Q1 XSTR, MOSFET, N-CHANNEL 650V FAIRCHILD SEMI FDPF15N65 19 2 R1, R2 RES, 1206 100kΩ 1% 1/4W VISHAY CRCW1206100KFKEA 20 2 R3, R18 RES, 0603 100kΩ 1% 1/10W VISHAY CRCW0603100KFKEA 21 1 R4 RES, 0603 4.99kΩ 1% 1/10W VISHAY CRCW06034K99FKEA 22 2 R5, R25 RES, 0603 20Ω 1% 1/10W VISHAY CRCW060320R0FKEA 23 1 R7 RES, 0603 2kΩ 1% 1/10W VISHAY CRCW06032K00FKEA 24 1 R8 RES, 1206 0.05Ω 1% 1/4W VENKEL LCR1206-R050GT 25 1 R9 RES, 1206 4.02kΩ 1% 1/4W VISHAY CRCW12064K02FKEA 26 2 R10, R11 RES, 1206 499kΩ 1% 1/4W VISHAY CRCW1206499KFKEA 27 1 R12 RES, 0603 3.48kΩ 1% 1/10W VISHAY CRCW06033K48FKEA 28 1 R19 RES, 0603 40.2kΩ 1% 1/10W VISHAY CRCW060340K2FKEA 29 1 R20 RES, 0603 16.9kΩ 1% 1/10W VISHAY CRCW060316K9FKEA 30 1 R21 RES, 0603 0kΩ JUMPER VISHAY CRCW06030000Z0EA 31 1 R30 RES, 200Ω 5% 1W METAL OXIDE KOA MOS1CT52R201J 32 1 T1 XFMR, FLYBACK COILCRAFT JA4429-AL 33 1 U1 IC, TRAIC DMMABLE OFFLINE LED DRIVER LINEAR TECH. LT3799EMSE 34 1 V1 VARISTOR, 320V RMS 13.5MM RADIAL SEI CV1320K10T 35 1 Z2 DIODE, TRANSIENT VOLTAGE SUPPRESSOR 170V DIODES INC. SMBJ170A 36 1 Z3 DIODE, ZENER, 33V DIODES INC.SMAZ33-13-F Additional Demo Board Circuit Components 1 0 R22 RES, 0603 OPTION OPTION 4 E1, E2, E4, E5 TURRET MILL MAX MILL-MAX 2501-2-00-80-00-00-07-0 Hardware 1 dc1595afb 4 N E2 V1 320VAC 3 2 1A 4 1 90 - 270VAC 50/60Hz 33mH L1 0.068uF X CAP C1 L2 - FAULT 2 750uH 3 4 F1 FAULT + HD06 B1 1 C2 1% 100k R18 R20 16.9k 1% R2 100k 1% R11 499k 1% R12 3.48k 1% R1 100k 1% R19 40.2k 1% 0.1uF 400V R10 499k 1% R30 200 0.22uF C4 R22 OPT R21 0 BAV20W D8 R5 20 1% 5 1 2 3 4 12 16 C3 10uF 50V 2 C7 FAULT CTRL1 CTRL2 CTRL3 VREF NC VINSENSE 0.1uF 1 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. C21 COMP+ COMP- INTVCC SENSE GATE FB 1% 2k R7 4.7pF C20 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. ENG. :(,* PCB DES. :(,*0 , Z3 + 560uF 35V C11 DATE: IC NO. LED- SHEET LT3799EMSE DEMO CIRCUIT 1595A OF 2 REV 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only 560uF 35V C10 R9 4.02k 1% E5 LED+ WEI G. E4 DATE 02/03/11 APPROVED OFFLINE ISOLATED FLYBACK LED CONTROLLER WITH PFC N/A SIZE + TECHNOLOGY CMZ5937B 33V TITLE: SCHEMATIC Y1 D5 SBR1U150SA PRODUCTION 2 REVISION HISTORY DESCRIPTION REV 2200pF APPROVALS R8 50m FDPF15N65 Q1 2 CONTRACT NO. CMR1U-06M D1 SMBJ170A Z2 6 4 1 7 4:1 T1 3 CUSTOMER NOTICE LT3799EMSE 0.015uF 50V C6 16V R25 20 1% 4.7uF C8 INTVCC U1 7 8 13 15 14 9 R4 4.99k 1% 1% 100k R3 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. BAV20W D2 + E1 6 1 2 L 11 VIN CT 10 DCM GND 17 1 2 ECO DEMO MANUAL DC1595A SCHEMATIC DIAGRAM dc1595afb 5 DEMO MANUAL DC1595A 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 dc1595afb 6 Linear Technology Corporation LT 1111 REV B • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2011