DEMO MANUAL DC2104A LT8312 Boundary Mode PFC Controller Description Demonstration Circuit 2104A is an off-line boundary conduction mode power factor correction (PFC) boost converter featuring the LT®8312. Boundary conduction mode offers inherent MOSFET valley switching to reduce the switching loss and the boost diode zero current switching to remove the diode reverse-recovery loss. The demo board provides a 400V/150W single constant-voltage output suitable for applications requiring regulated input voltage. The DC2104A is optimized to operate over a wide AC input voltage range (90VAC to 265VAC, 47Hz to 63Hz). Output voltage accuracy stays within ±5% over the whole input voltage and load range. It provides a high power factor (>0.95) enabling the design to be used worldwide. It is also designed to comply with the IEC61000-3-2 Class-D harmonics standard and the EN55022 conducted EMI standard. Performance Summary This DC 2104A evaluation board uses a two-layer printed circuit board (PCB) designed for 150W (400V/0.375A) rated power. It can also be changed for other power level applications. Please refer to the Typical Applications section in the data sheet for more information. The LT8312 is available in a low profile, thermally enhanced 16-lead MSOP package. The LT8312 data sheet gives a complete description of the part, operation and application information. The data sheet must be read in conjunction with this demo manual. Design files for this circuit board are available at http://www.linear.com/demo/DC2104A 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. Specifications are at TA = 25°C SYMBOL PARAMETER CONDITIONS VIN Input Voltage Range Line Frequency, 47Hz to 63Hz VOUT Output Voltage MIN TYP MAX UNITS 90 115 265 VAC 380 400 420 V IOUT Maximum Output Current EFE Efficiency 115VAC IOUT = 0.375A 230VAC 0.375 96 97.5 % A PF Power Factor 115VAC IOUT = 0.375A 230VAC 0.99 0.98 % dc2104af 1 DEMO MANUAL DC2104A Quick Start Procedure IMPORTANT NOTE TO CUSTOMERS: HIGH VOLTAGES ARE PRESENT 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. DC2104A is easy to set up to evaluate the performance of the LT8312. Refer to Figure 1 for proper measurement equipment setup and follow the procedure below: 1. Connect an adjustable load between + and – output 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 (265VAC). 4. Check for the proper output voltage. Once the proper output voltage is established, adjust the input voltage and/or the load and observe the output voltage regulation, efficiency, power factor and other parameters. Figure 1. Proper Measurement Equipment Setup 2 dc2104af DEMO MANUAL DC2104A 99 1.00 98 0.95 97 0.90 96 0.85 PF EFFICIENCY (%) Quick Start Procedure 95 0.80 94 0.75 93 92 0.70 115VAC 230VAC 0 20 40 60 0.60 80 100 120 140 160 POUT (W) 115VAC 230VAC 0 20 40 60 80 100 120 140 160 POUT (W) DC2104A F02 DC2104A F03 Figure 2. Efficiency vs Load Figure 3. Power Factor vs Load VIN 100V/DIV VIN 200V/DIV IIN 2A/DIV IIN 1A/DIV 5ms/DIV DC2104A F04 Figure 4. 115VAC Input Voltage and Current 5ms/DIV DC2104A F05 Figure 5. 230VAC Input Voltage and Current VOUT 5V/DIV VOUT 5V/DIV 5ms/DIV DC2104A F06 Figure 6. Output Ripple (AC-Coupled), VIN = 115VAC 5ms/DIV DC2104A F07 Figure 7. Output Ripple (AC-Coupled), VIN = 230VAC dc2104af 3 DEMO MANUAL DC2104A Quick Start Procedure VOUT 10V/DIV VOUT 10V/DIV IOUT 0.2V/DIV IOUT 0.2V/DIV 20ms/DIV DC2104A F08 Figure 8. VIN = 115VAC, Full Load to Half Load Transient VOUT 10V/DIV IOUT 0.2V/DIV IOUT 0.2V/DIV DC2104A F10 Figure 10. VIN = 115VAC, Half Load to Full Load Transient DC2104A F09 Figure 9. VIN = 230VAC, Full Load to Half Load Transient VOUT 10V/DIV 20ms/DIV 4 20ms/DIV 20ms/DIV DC2104A F11 Figure 11. VIN = 230VAC, Half Load to Full Load Transient dc2104af DEMO MANUAL DC2104A Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 1 B1 BRIDGE RECTIFIER DIODES INC., GBU404 2 1 C1 CAP., FILM, 0.22µF, 275VAC, 10% KEMET, R46KI322000M2K 3 1 C2 CAP., FILM, 0.47µF, 5%, 400V PANASONIC, ECWF4474JL 4 1 C4 CAP, 10µF 20% 50V ALUM RUBYCON, 50YXJ10M 5X11 5 1 C5 CAP., X7R, 680nF, 25V, 10%, 0805 AVX, 08053C684KAT2A 6 1 C6 Cap., C0G, 4.7nF, 100V, 5% 0805 TDK, C2012C0G2A472J125AA 7 1 C7 Cap., C0G, 27pF, 50V, 5% 0805 AVX, 08055A270JAT2A 8 2 C8, C14 CAP., X5R, 4.7µF, 20%, 16V, 0805 AVX, 0805YD475MAT2A 9 1 C10 CAP., ALUM, 100µF, 450V, 20% RUBYCON, 450VXH100MEFCSN22X25 10 1 C12 CAP., FILM, 1.0µF, 5%, 400V PANASONIC, ECWF4105JL 11 1 C13 CAP., C0G, 1nF, 10%, 25V 0805 AVX, 08053A102KAT2A 12 3 C3, C9, C15 CAP., C0G, 100pF, 5%, 25V 0805 AVX, 08055A101JAT2A 13 1 D2 DIODE, 200V, SOD123 DIODES INC., BAV20W 14 1 D3 ZENER DIODE, 24V, SMA CENTRAL SEMI., CMZ5934B 15 1 D4 DIODE, 1A, 600V, DO-41 DIODES INC., 1N4005 16 1 D5 DIODE, 5A, 600V, SMC CENTRAL SEMI., CMR5H-06 17 2 D1, D6 DIODE, SWITCH 100V 400mW, SOD123 DIODES INC., 1N4148W-7-F 18 1 F1 FUSE, FAST ACTING, 3.15A BUSSMAN, SS-5H-3.15A-APH 19 1 L1 CHOKE, 15mH EPCOS, B82734R2232B030 20 1 L3 PFC CHOKE, 450µH WÜRTH ELECTONIK, 760802122 21 1 L4 CHOKE, 300µH WÜRTH ELECTONIK, 7447060 22 1 Q1 N-CH MOSFET, 500V, TO-220 INFINEON, IPA50R190CE 23 2 R1, R2 RES., CHIP., 499K, 1/4W, 1% 1206 VISHAY, CRCW1206499KFKEA 24 1 R3 RES., CHIP., 301K, 1/8W, 1%, 0805 VISHAY, CRCW0805301KFNEA 25 1 R4 RES., CHIP., 11.8K, 1/8W, 1%, 0805 VISHAY, CRCW080511K8FKEA 26 1 R5 RES., CHIP., 24.9K, 1/8W, 1%, 0805 VISHAY, CRCW080524K9FKEA 27 2 R6, R7 RES., CHIP., 150k, 1/4W, 1% 1206 VISHAY, CRCW1206150KFKEA 28 1 R8 RES., CHIP., 2.4M, 1/8W, 5%, 0805 VISHAY, CRCW08052M40JNEA 29 1 R9 RES., CHIP., 47, 1/4W, 5%, 1206 VISHAY, CRCW120647R0JNEA 30 1 R10 RES., CHIP., 2K, 1/8W, 5%, 0805 VISHAY, CRCW08052K00JNEA 31 1 R11 RES., CHIP., 10, 1/8W, 1% 0805 VISHAY, CRCW080510R0FNEA 32 1 R12 RES., CHIP., 9.53K, 1/8W, 1%, 0805 VISHAY, CRCW08059K53FKEA 33 3 R13, R16, R17 RES., CHIP., 1M, 1/4W, 1% 1206 VISHAY, CRCW12061M00FKEA 34 1 R14 RES., CHIP., 100, 1/8W, 1%, 0805 VISHAY, CRCW0805100RJNEA 35 1 R15 RES., CHIP., 0.015, 1W, 1% 1206 VISHAY, WSLP1206R0150FEA 36 1 R18 RES., CHIP., 75K, 1/8W, 1% 0805 VISHAY, CRCW080575K0FKEA 37 1 R19 RES., CHIP., 0, 1/8W, 0805 VISHAY, CRCW08050000Z0EA 38 1 R26 RES., CHIP., 10K, 1/8W, 1% 0805 VISHAY, CRCW080510K0FNEA 39 1 V1 VARISTOR, 300V RMS, 10mm RADIAL BOURNS, MOV-10D471K 40 1 U1 I.C., PFC CONTROLLER MS-16 LINEAR TECH., LT8312EMS#PBF dc2104af 5 DEMO MANUAL DC2104A Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Additional Demo Board Circuit Components 1 0 C16 (OPT) CAP., FILM, 0.22µF, 275VAC, 10% 2 0 R20-R25 (OPT) RES., CHIP., 1206 Hardware: For Demo Board Only 1 2 J1, J2 CONN., TERM BLOCK PCB 5.0mm 2POS WEIDMULLER, 1715250000 2 1 HS1 HEAT SINK FOR B1 WAKEFIELD-VETTE, 287-1ABE 6 dc2104af 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 OPT C16 B1 GBU404 3 C1 1 4 C13 1nF R5 24.9k 1% R4 11.8k 1% 75k R18 C3 100pF R8 2.4M 1% 1N4148W D1 301k 1% R7 150k 1% 1206 R2 499k 1% 1206 R3 R6 150k 1% 1206 R1 499k 1% 1206 300uH C12 1uF C2 400V 0.47uF ECWF4105JL 400V ECWF4474JL VREC 5 4 1. ALL CAPACITORS AND RESISTORS ARE 0805. C5 680nF 3 2 1 5 4 12 16 C14 4.7uF R26 10k 1% GND GND GND OVP VREF EN_UVLO VINSENSE GND GND INTVCC SENSE GATE FB 100V 4.7nF C6 10uF 50V 50YXJ10M 5X11 C4 BAV20W D2 CMZ5934B D3 47 1206 R9 D6 C8 4.7uF 16V INTVCC 10 3 1% R12 9.53k 0 R19 L3 760802122 1N4148W R11 LT8312EMS U1 7 8 13 15 14 9 R10 2k C7 27pF 3 R25 2 OPT 1206 R24 R23 OPT 1206 OPT 1206 OPT 1206 OPT 1206 OPT 1206 R21 R20 100 R14 IPA50R190CE R22 1M 1206 Q1 R16 1M 1206 R15 0.015 1206 CMR5H-06 D5 2 R13 1N4005 D4 C9 100pF 50V C15 100pF 3 7 L4 7447060 4 NOTES: UNLESS OTHERWISE SPECIFIED, 90 - 265VAC J1 F1 3.15A MOV-10D471K V1 0.22uF 275VAC R46KI322000M2K 2 3 L1 15mH B82734R2232B030 2 1 12 6 D 1 + - 4 2 L N + 11 VIN VC 6 10 DCM 5 C10 100uF 450V VREC + R17 1M 1206 J2 - + 400V / 0.375A 2 1 1 1 A B C D DEMO MANUAL DC2104A Schematic Diagram dc2104af 7 DEMO MANUAL DC2104A 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 8 dc2104af Linear Technology Corporation LT 0215 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2015