LM V Off-Line TRIAC Dimmer LED Driver Reference Design

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1 LM V Off-Line TRIAC Dimmer LED Driver Reference Design 1.0 Design Specifications 2.0 Design Description Inputs Output #1 VinMin=190V National Semiconductor LM3445 PowerWise Design Lab - HK June 22, 2009 Vout1=up to 32V VinMax=265V Iout1=up to.4a This reference design converts 190 V AC to 265 V AC input, and drives seven, or eight series connected LED s from 300 to 400 ma average current.. The LM3445 switching frequency is set at a nominal 100 khz. This is a two layer board using the bottom and top layer for component placement. The reference design can be modified to adjust the LED forward current, the number of series connected LEDs and switching frequency. Refer to the LM3445 datasheet for detailed instructions. 3.0 Features No flicker even a very low dim ratios 2009 National Semiconductor Corporation LM V Off-Line TRIAC Dimmer LED Driver Reference Design LM3445

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 4.0 Schematic A A F1 R12 CN1 N AC1 1A 27.4k D3 250V R15 0.6mH BR1 C1 L1A C2 MB6S 600V C7 D6 D9 R14 R6 L1B 0.5A 33uF 110k 1M 400V D5 C8 D8 C13 R8 0.6mH RT1 R13 0.

2 Schematic A A F1 R12 CN1 N AC1 1A 27.4k D3 250V R15 0.6mH BR1 C1 L1A C2 MB6S 600V C7 D6 D9 R14 R6 L1B 0.5A 33uF 110k 1M 400V D5 C8 D8 C13 R8 0.6mH RT1 R13 0.5R 33uF R2 400V D4 D7 R7 C9 80R 27.4k 110k 1M Q1 33uF NTC IRF820A 400V LED+ FR C10 R4 100nF C12 412k 630V 1uF FC 100V Q3 D10 FMMT560 B D1 D2 B 15V BZX84B15-V R10 10R R11 R5 RINJ C5 C6 0R BAS40-05-V 4.99k 22uF 22uF 25V 25V R k C3 R9 470n L2 LED-. 2.2mH 0R U1 Q2 IRF820A DIM LM3445MM C C11 C 470p R3 GND R C4 68n D D LM3445 Designed for: PRJ_Customer Mod. Date: 6/8/2009 National Semiconductor and/or its licensors do not warrant the accuracy or completeness of Project: PRJ_Title this specification or any information contained therein. National and/or its licensors do not Sheet Title: Sheet: 1 of 1 warrant that this design will meet the specifications, will be suitable for your application or fit Size: A3 Schematic: 870PRJ_BasePN Rev: SCH_Rev for any particular purpose, or will operate in an implementation. National and/or its licensors Assembly Variant: Variant name is not interpreted until output do not warrant that the design is production worthy. You should completely validate and test File: 220V TRIAC Dimmer LED Driver.SchDoc PADC: PRJ_PADC your design implementation to confirm the system functionality for your application. Contact: TechSupport Copyright, National Semiconductor, 2008 schematic1 FIGURE 1. LM V Schematic L

3 5.0 Bill of Materials LM3445 Items Designator PartNumber Description Manufacturer 1 BR1 MB6S Bridge, 600V, 0.5A Vishay 2 C11 GRM1885C1H471JA01 C. Cap. 470pF, 50V,C0G, 0603 Murata 3 C10 ECWF6104JL M. Cap. 100n, 630V Panasonic 4 C12 GRM32CR72A105KA35L C. Cap. 1uF, 100V, X7R, 1210 Murata 5 C3 GRM188R71C474KA88 C. Cap. 470nF, 16V, X7R, 0603 Murata 6 C4 GRM188R71H683KA93 C. Cap. 68nF, 50V, X7R, 0603 Murata 7 C5 GRM32E61E226ME15L C. Cap. 22uF, 25V, X5R, 1210 Murata 8 C6 GRM32E61E226ME15L C. Cap. 22uF, 25V, X5R, 1210 Murata 9 C7 400SXW33M E. Cap. 33uF, 400V Rubycon 10 C8 400SXW33M E. Cap. 33uF, 400V Rubycon 11 C9 400SXW33M E. Cap. 33uF, 400V Rubycon 12 D1 BZX84B15-V Zener, 15V, 300mW, SOT-23 Vishay 13 D10 Diode Fast Recovery, SMB, 600V, 1A Vishay 14 D2 BAS40-05-V Schottky Dual, 40V, 200mA, SOT-23 Vishay 15 D3 Diode Fast Recovery, SMB, 600V, 1A Vishay 16 D4 Diode Fast Recovery, SMB, 600V, 1A Vishay 17 D5 Diode Fast Recovery, SMB, 600V, 1A Vishay 18 D6 Diode Fast Recovery, SMB, 600V, 1A Vishay 19 D7 Diode Fast Recovery, SMB, 600V, 1A Vishay 20 D8 Diode Fast Recovery, SMB, 600V, 1A Vishay 21 D9 Diode Fast Recovery, SMB, 600V, 1A Vishay 22 L1 UF1717V-601Y1R0-01 Inductor - Common mode, 0.6mH TDK 23 L2 SL KR60-PF Inductor, 2.2mH TDK 24 Q1 IRF820A N-CH MOSFET, 500V, 2.5A, TO220 Vishay 25 Q2 IRF820A N-CH MOSFET, 500V, 2.5A, TO220 Vishay 26 Q3 FMMT560 PNP BJT, 500V, 0.5A, SOT23 Zetex 27 R1 CRCW F Resistor, 280k, 1%, 0603 Vishay 28 R10 CRCW120610R0F Resistor, 10R, 1%, 1206 Vishay 29 R11 CRCW08050R00F Resistor, 0R, 1%, 0805 Vishay 30 R2 CRCW F Resistor, 110k, 1%, 1206 Vishay 31 R14 CRCW F Resistor, 110k, 1%, 1206 Vishay 32 R3 CRCW25121R80FNEG RES 1.80 OHM 1W 1% 2512 SMD Vishay 33 R4 CRCW F Resistor, 412k, 1%, 0603 Vishay 34 R5 CRCW F Resistor, 4.99k, 1%, 1206 Vishay 35 R6 CRCW F Resistor, 1M, 1%, 0805 Vishay 36 R7 CRCW F Resistor, 1M, 1%, 0805 Vishay 37 R8 WSL2512E00D5XEA Resistor, 0.5R, 1%, 2512 Vishay 38 R9 CRCW08050R00F Resistor, 0R, 1%, 0805 Vishay 39 RINJ SPARE 40 U1 LM3445MM IC, Triac Dimmable Offline LED Driver NSC 41 R12 RC1206FR-0727KL RES 27.0K OHM 1/4W 1% 1206 SMD Yageo 42 R13 RC1206FR-0727KL RES 27.0K OHM 1/4W 1% 1206 SMD Yageo 43 RT1 MF72-080D9 Thermistor, NTC, 80_@25C 20% Cantherm 44 PCB REV B PCB 2 Layers, FR4, Copper Foil 2oz., thickness 1.6mm, 72mm x 71mm 45 HS1 HS 11B/ (LS115) Heat Sink WECL 46 HS2 HS 11B/ (LS115) Heat Sink WECL 47 screw 1 for Q1 M3*6, Pan head, Machine screws 48 screw 2 for Q2 M3*6, Pan head, Machine screws 49 F FUSE, ANTISURGE, TR5, 1A LITTELFUSE 50 LX1 51 LX2 52 FC 53 FR 54 CN Wire To Board Header TYCO ELECTRONICS / AMP 55 C1 56 C2 57 R15 58 C13 59 FB1 MPZ2012S102A Chip Beead Z=1000 ohm@100mhz, 0805 TDK 60 R16 Vishay FIGURE 2. LM V - BOM bom1 3

4 LM Other Operating Values Operating Values Description Parameter Value Unit Modulation Frequency Frequency 100 KHz 7.0 Board Photos boardphoto FIGURE 3. LM V Board Photo top 4

5 LM3445 boardphoto1 FIGURE 4. LM V Board Photo bottom 8.0 Layouts 5

6 LM3445 layout2 FIGURE 5. LM V PCB-top 6

7 LM3445 layout3 FIGURE 6. LM V PCB-bottom 7

8 LM Physical Dimensions inches (millimeters) unless otherwise noted 8

9 Notes LM

10 LM3445 LM V Off-Line TRIAC Dimmer LED Driver Reference Design Notes National Semiconductor's design tools attempt to recreate the performance of a substantially equivalent physical implementation of the design. Reference designs are created using National's published specifications as well as the published specifications of other device manufacturers. While National does update this information periodically, this information may not be current at the time the reference design is built. National and/or its licensors do not warrant the accuracy or completeness of the specifications or any information contained therein. National and/or its licensors do not warrant that any designs or recommended parts will meet the specifications you entered, will be suitable for your application or fit for any particular purpose, or will operate as shown in the simulation in a physical implementation. National and/or its licensors do not warrant that the designs are production worthy. You should completely validate and test your design implementation to confirm the system functionality for your application. National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYS- TEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICON- DUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. BANNED SUBSTANCE COMPLIANCE 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no "Banned Substances" as defined in CSP-9-111S2. Leadfree products are RoHS compliant. National Semiconductor Americas Customer Support Center new.feedback@nsc.com Tel: National Semiconductor Europe Customer Support Center Fax: +49 (0) europe.support@nsc.com Deutsch Tel: +49 (0) English Tel: +49 (0) Français Tel: +33 (0) National Semiconductor Asia Pacific Customer Support Center ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: jpn.feedback@nsc.com Tel:

LM3410X LED Driver 6-Pin LLP Demo Board

LM3410X LED Driver 6-Pin LLP Demo Board Introduction The demo board included in this shipment converts 2.7V to 5.5V input, and illuminates four 50mA LED s in series using the LM3410X 1.6MHz LED driver