Title Reference Design Report for a High Efficiency (81%), High Power Factor (>0.9) TRIAC Dimmable 7 WTYP LED Driver Using LinkSwitch(R)-PH LNK403EG Specification 90 VAC - 265 VAC Input; 21 VTYP, 0.33 A Output Application LED Driver Author Applications Engineering Department Document Number RDR-193 Date June 9, 2010 Revision 1.0 Summary and Features Superior performance and end user experience o TRIAC dimmer compatible (including low cost leading edge type) No output flicker >1000:1 dimming range o Clean monotonic start-up - no output blinking o Fast start-up (<100 ms) - no perceptible delay o Consistent dimming performance unit to unit Highly energy efficient o 81% at 115 VAC, 82% at 230 VAC Low cost, low component count and small printed circuit board footprint solution o No current sensing required o Frequency jitter for smaller, lower cost EMI filter components Integrated protection and reliability features o Output open circuit / output short-circuit protected with auto-recovery o Line input overvoltage shutdown extends voltage withstand during line faults. o Auto-recovering thermal shutdown with large hysteresis protects both components and printed circuit board o No damage during brown-out or brown-in conditions Meets IEC 61000-4-5 ringwave, IEC 61000-3-2 Class C harmonics and EN55015 B conducted EMI Power Integrations 5245 Hellyer Avenue, San Jose, CA 95138 USA. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 PATENT INFORMATION The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations' patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at . Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 2 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG Table of Contents 1 2 3 4 Introduction .................................................................................................................5 Power Supply Specification ........................................................................................7 Schematic ...................................................................................................................8 Circuit Description.......................................................................................................9 4.1 Input Filtering .......................................................................................................9 4.2 LinkSwitch-PH Primary ........................................................................................9 4.3 Bias and Output Rectification ..............................................................................9 4.4 TRIAC Phase Dimming Control ...........................................................................9 5 PCB Layout...............................................................................................................11 6 Bill of Materials .........................................................................................................12 7 Transformer Specification .........................................................................................14 7.1 Electrical Diagram..............................................................................................14 7.2 Electrical Specifications .....................................................................................14 7.3 Materials ............................................................................................................14 7.4 Transformer Build Diagram................................................................................15 7.5 Transformer Construction ..................................................................................15 8 Transformer Design Spreadsheet .............................................................................16 9 Performance Data.....................................................................................................19 9.1 Efficiency vs. Line and Output (LED String) Voltage..........................................19 9.1.1 21 V ............................................................................................................19 9.1.2 18 V ............................................................................................................19 9.1.3 24 V ............................................................................................................20 9.2 Regulation .........................................................................................................21 9.2.1 Output Voltage and Line.............................................................................21 9.2.2 Line Regulation...........................................................................................22 10 Thermal Performance............................................................................................24 10.1 VIN = 115 VAC ...................................................................................................24 10.2 VIN = 230 VAC ...................................................................................................24 11 Harmonic Data ......................................................................................................25 12 Waveforms ............................................................................................................27 12.1 Input Line Voltage and Current ..........................................................................27 12.2 Drain Voltage and Current .................................................................................27 12.3 Output Voltage and Ripple Current....................................................................28 12.4 Drain Voltage and Current Start-up Profile ........................................................28 12.5 Output Current and Drain Voltage at Shorted Output ........................................29 12.6 Open Load Output Voltage ................................................................................29 13 Dimming ................................................................................................................30 13.1 Input Phase vs. Output Current .........................................................................30 13.2 Output Voltage and Input Current Waveforms During Dimming ........................31 13.2.1 VIN = 115 VAC / 60 Hz ................................................................................31 13.2.2 VIN = 230 VAC / 50 Hz ................................................................................32 14 Line Surge.............................................................................................................33 15 Conducted EMI .....................................................................................................34 16 Production Distribution Data..................................................................................36 Page 3 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 17 Revision History ....................................................................................................37 18 Appendix ...............................................................................................................38 18.1 Dimming Test with TRIAC Dimmer Switches ....................................................38 18.1.1 115 VAC Input, 60 Hz.................................................................................38 18.1.2 230 VAC Input, 50 Hz.................................................................................38 18.2 Audible Noise Test Data....................................................................................39 18.2.1 VIN = 115 VAC, Full Phase .........................................................................39 18.2.2 VIN = 115 VAC, Half Phase ........................................................................39 18.2.3 VIN = 230 VAC, Full Phase .........................................................................40 18.2.4 VIN = 230 VAC, Half Phase ........................................................................40 Important Note: Although this board is designed to satisfy safety isolation requirements, the engineering prototype has not been agency approved. Therefore, all testing should be performed using an isolation transformer to provide the AC input to the prototype board. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 4 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 1 Introduction The document describes a high power-factor corrected dimmable LED driver designed to drive 21 V at 0.33 A from an input voltage range of 90 VAC to 265 VAC. The LED driver utilizes the LNK403EG from Power Integrations. LinkSwitch-PH ICs allow the implementation of cost effective and low component count LED drivers which both meet power factor and harmonics limits but also offer enhanced end user experience. This includes ultra-wide dimming range, flicker free operation (even with low cost with AC line TRIAC dimmers) and fast, clean turn on. The topology used is an isolated Flyback operating in continuous conduction mode. Output current regulation is sensed entirely from the primary side eliminating the need for secondary side feedback components. No external current sensing is required on the primary side either as this is performed inside the IC further reducing components and losses. The internal controller adjusts the MOSFET duty cycle to maintain a sinusoidal input current and therefore high power factor and low harmonic currents. The LNK403EG also provides a sophisticated range of protection features including autorestart for open control loop and output short-circuit conditions. Line overvoltage provides extended line fault and surge withstand, output overvoltage protects the supply should the load be disconnect and accurate hysteretic thermal shutdown ensures safe average PCB temperatures under all conditions. In any LED luminaire the driver determines many of the performance attributes experienced by the end customer (user) including startup time, dimming, flicker and unit to unit consistency. For this design a focus was given to compatibility with as wider range of dimmers and as large of a dimming range as possible, at both 115 VAC and 230 VAC. However simplification of the design is possible for both single input voltage operation, no dimming or operation with a limited range of (higher quality) dimmers. This document contains the LED driver specification, schematic, PCB diagram, bill of materials, transformer documentation and typical performance characteristics. Page 5 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 Figure 1 - Populated Circuit Board Photograph (Top View). PCB Outline Designed to Fit Inside PAR20 Enclosure. Figure 2 - Populated Circuit Board Photograph (Bottom View). Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 6 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 2 Power Supply Specification The table below represents the minimum acceptable performance of the design. Actual performance is listed in the results section. Description Input Voltage a Frequency Output Output Voltage Output Current a Total Output Power Continuous Output Power Efficiency Full Load Symbol Min Typ Max Units Comment VIN fLINE 90 47 115 50/60 265 64 VAC Hz 2 Wire - no P.E. VOUT IOUT 18 21 0.33 24 V A 7 POUT VOUT = 21, VIN = 115 VAC, 25C W 80 % o Measured at POUT 25 C Environmental Conducted EMI Meets CISPR 15B / EN55015B Designed to meet IEC950 / UL1950 Class II Safety Ring Wave (100 kHz) Differential Mode (L1-L2) Common mode (L1/L2-PE) Power Factor IEC 61000-4-5 , 200 A Measured at VOUT(TYP), IOUT(TYP) and 115/230 VAC 0.9 Harmonics Ambient Temperature kV 2.5 EN 61000-3-2 Class D b TAMB 40 o C Free convection, sea level Notes: a When configured for phase controlled (TRIAC) dimming, in order to give the widest dimming range, the output current for a LinkSwitch-PH design varies with line voltage. Therefore the output current specification is defined at a single line voltage only. For this design a line voltage of 115 VAC was selected. At higher line voltages the output current will increase and reduce with lower line voltages. The typical output current variation is +30% for +200% increase in line voltage. A single resistor value change can be used to center the nominal output current for a given nominal line voltage. See Table 1 for the feedback resistor value vs. nominal line voltage. b Maximum ambient temperature specification may be increased by adding a small heatsink to the LinkSwitch-PH device. Page 7 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 3 Schematic Figure 3 - Schematic. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 8 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 4 Circuit Description The LinkSwitch-PH device is a controller and integrated 725 V MOSFET intended for use in LED driver applications. The LinkSwitch-PH is configured for use in a single-stage continuous conduction mode Flyback topology and provides a primary side regulated constant current output while maintaining high power factor from the AC input. 4.1 Input Filtering Fuse F1 fuses the input and BR1 rectifies the AC line voltage. Inductor L1-L3, C2, R2, and R3 form EMI filter with C7 Y capacitor. Small bulk capacitor C3 is required for a low impedance path for the primary switching current. A low value of capacitance is necessary to maintain a power factor of greater than 0.9. 4.2 LinkSwitch-PH Primary Diode D6 and C8 detect the peak AC line voltage. This voltage is converted to a current into the V pin via R4 and R7. This current is also used by the device to set the input over/undervoltage protection thresholds. The V pin current and the FB pin current are used internally to control the average output LED current. TRIAC phase-angle dimming applications require 49.9 k resistors on the R pin and 4 M on the V pin to provide a linear relationship between input voltage and the output current. Resistor R4 also sets the internal references to select the brown-in and brown-out and input overvoltage protection thresholds. Diode D1 and VR1 clamp the drain voltage to a safe level from the leakage inductance voltage spike. Diode D5 is necessary to prevent reverse current from flowing through the LinkSwitch-PH device. 4.3 Bias and Output Rectification Diode D3, C6, R5, R9 and R18 create the primary bias supply. This voltage created from the transformer bias winding supplies bias current into the BYPASS pin through D4 and R10. Capacitor C12 is the main supply for the LinkSwitch-PH, which is charged to ~6 V at start-up from an internal high-voltage current source tied to the device DRAIN pin. A current proportional to the output voltage from the primary bias winding is fed into the FEEDBACK pin through R15. Diode D2 rectifies the secondary winding while capacitors C4 and C5 filter the output. Diode D8, R24, C14, VR3, C15, R23, and Q2 provide an open load overvoltage protection function. This protects output capacitors, C4 and C5 from excessive voltage should the load be disconnected. 4.4 TRIAC Phase Dimming Control Components R12, R13, R20, R17, D7, Q1, C13, VR2, and Q3 in conjunction with R16 reduce the inrush current when the TRIAC dimmer turns on. This circuit allows the inrush current to flow through R16 for the first 2.4 ms at 115 VAC (1.2 ms at 230 VAC) of the TRIAC conduction. After approximately 2.4 ms, Q3 turns on and shorts R16. This keeps the power dissipation on R16 low. Resistor R12, R13, R20 and C13 provide a 2.4 ms Page 9 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 delay after the TRIAC conducts. Transistor Q1 discharges C13 when the TRIAC is not conducting. Zener VR2 clamps the gate voltage of Q3 to 15 V. Capacitor C9 and R14 keep the TRIAC current above the holding threshold to prevent multiple firings. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 10 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 5 PCB Layout Figure 4 - Printed Circuit Layout (Designed to Fit Inside PAR20 Lamp Form Factor). Page 11 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 6 Bill of Materials Item Qty Ref Des Description 1 1 BR1 600 V, 1 A, Bridge Rectifier, SMD, DFS 2 1 C2 22 nF, 275VAC, Film, X2 3 1 C3 4 2 C4 C5 5 1 C6 100 nF, 400 V, Film 270 F, 35 V, Electrolytic, Very Low ESR, 41 m, (8 x 20) 22 F, 50 V, Electrolytic, Low ESR, 900 m, (5 x 11.5) 6 1 C7 2.2 nF, Ceramic, Y1 7 1 C8 1 F, 400 V, Electrolytic, (6.3 x 11) 8 1 C9 9 1 C12 220 nF, 400 V, Film 100 F, 10 V, Electrolytic, Very Low ESR, 300 m, (5 x 11) Mfg Part Number Mfg DF06S-E3/45 Vishay ECQ-U2A223ML Panasonic ECQ-E4104KF Panasonic EKZE350ELL271MH20D Nippon Chemi-Con ELXZ500ELL220MEB5D Nippon Chemi-Con 440LD22-R Vishay EKMG401ELL1R0MF11D United Chemi-Con ECQ-E4224KF Panasonic EKZE100ELL101ME11D Nippon Chemi-Con 10 1 C13 68 nF, 50 V, Ceramic, X7R, 0805 ECJ-2YB1H683K Panasonic 11 1 C14 1 F, 50 V, Ceramic, X7R, 0805 08055D105KAT2A AVX Corporation 12 1 C15 100 nF, 50 V, Ceramic, X7R, 0805 ECJ-2YB1H104K Panasonic 13 1 D1 1000 V, 1 A, Ultrafast Recovery, 75 ns, DO-41 14 1 D2 200 V, 4 A, Schottky, SMC, DO-214AB 15 1 D3 400V, 1 A, Rectifier, Fast Recovery, MELF (DL-41) 16 1 D4 100 V, 1 A, Fast Recovery, 150 ns, SMA 17 1 D5 18 1 D6 19 1 D7 200 V, 1 A, Ultrafast Recovery, 25 ns, DO-214AC 1000 V, 1 A, Rectifier, Glass Passivated, DO213AA (MELF) 100 V, 1 A, Rectifier, Glass Passivated, DO213AA (MELF) 20 1 D8 250 V, 0.2 A, Fast Switching, 50 ns, SOD-323 21 1 F1 FL1 FL2 FL3 3.15 A, 250 V, Slow, RST UF4007-E3 Vishay MBRS4201T3G ON Semiconductor DL4936-13-F Diodes Inc RS1B-13-F Diodes, Inc ES1D Vishay DL4007-13-F Diodes Inc DL4002-13-F Diodes Inc BAV21WS-7-F Diode Inc. 507-1181 Belfuse 22 3 23 2 24 3 LN L1 L2 L3 PCB Terminal Hole, 22 AWG N/A N/A Test Point, WHT,THRU-HOLE MOUNT 5012 Keystone SLF7045T-102MR14-PF TDK Corporation 25 1 Q1 PNP, 400V 150MA, SOT-23 FMMT558TA Zetex Inc 26 1 Q2 NPN, Small Signal BJT, 40 V, 0.2 A, SOT-23 MMBT3904LT1G On Semiconductor 27 1 400 V, 1.7 A, 3.6 , N-Channel, DPAK IRFR310TRPBF Vishay 1 k, 5%, 1/8 W, Thick Film, 0805 ERJ-6GEYJ102V Panasonic 2.00 M, 1%, 1/4 W, Thick Film, 1206 ERJ-8ENF2004V Panasonic 1000 H, 0.14 A 28 3 Q3 R2 R3 R23 29 2 R4 R7 30 1 R5 75 , 5%, 1/8 W, Thick Film, 0805 ERJ-6GEYJ750V Panasonic 31 1 20 k, 5%, 1/4 W, Thick Film, 1206 ERJ-8GEYJ203V Panasonic 32 2 R6 R9 R18 10 k, 5%, 1/4 W, Thick Film, 1206 ERJ-8GEYJ103V Panasonic 33 1 3 k, 5%, 1/4 W, Thick Film, 1206 ERJ-8GEYJ302V Panasonic 750 k, 1%, 1/4 W, Thick Film, 1206 ERJ-8ENF7503V Panasonic 34 2 R10 R12 R13 35 1 R14 1 k, 5%, 1 W, Metal Oxide 36 1 R15 143 k, 1%, 1/8 W, Thick Film, 0805 Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RSF100JB-1K0 Yageo ERJ-6ENF1433V Panasonic Page 12 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 37 1 R16 270 , 5%, 1/2 W, Carbon Film CFR-50JB-270R Yageo 38 1 R17 15 , 1%, 1/8 W, Thick Film, 0805 ERJ-6ENF15R0V Panasonic 39 1 R19 49.9 k, 1%, 1/8 W, Thick Film, 0805 ERJ-6ENF4992V Panasonic 40 1 R20 2.4 M, 5%, 1/8 W, Thick Film, 0805 ERJ-6GEYJ245V Panasonic 41 1 R24 10 k, 5%, 1/8 W, Thick Film, 0805 ERJ-6GEYJ103V Panasonic 42 1 RV1 275 V, 80J, 10 mm, RADIAL 43 1 T1 44 1 TP3 45 1 TP4 46 1 U1 47 1 VR1 200 V, 1500W, TVS, GP-20 48 1 VR2 15 V, 5%, 500 mW, DO-213AA (MELF) ZMM5245B-7 Diodes Inc 49 1 VR3 39V, 5%, 500 mW, DO-213AA (MELF) ZMM5259B-7 Diodes Inc Page 13 of 41 ERZ-V10D431 Panasonic SNX-R1537 Santronics USA Test Point, RED,Miniature THRU-HOLE MOUNT 5000 Keystone Test Point, BLK,Miniature THRU-HOLE MOUNT 5001 Keystone LNK406EG Power Integrations 1.5KE200A-E3/54 Vishay Custom Transfomer, RM6,6pins LinkSwitch, LNK406EG, eSIP Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 7 Transformer Specification 7.1 Electrical Diagram Figure 5 - Transformer Electrical Diagram. 7.2 Electrical Specifications Electrical Strength Primary Inductance Resonant Frequency Primary Leakage Inductance 7.3 1 second, 60 Hz, from pins 1, 2, 6, FL1 to FL2, FL3 Pins 1-FL1, all other windings open, measured at 100 kHz, 0.4 VRMS Pins 1-FL1, all other windings open Pins 1-FL1 with FL2-FL3 shorted, measured at 100kHz, 0.4 VRMS 3000 VAC 2.45 mH 10% 750 kHz (Min.) 35 H 10% Materials Item [1] [2] [3] [4] [5] [6] [7] Description Core: PC95RM6 from TDK or equivalent, ALG = 149.5nH/n2 Bobbin: 6 pin vertical, B-RM6-V-6P from Epcos, or equivalent Magnet Wire: #35 AWG. Magnet Wire: #36 AWG Magnet Wire: #28 AWG T.I.W. Tape: 3M 1298 Polyester Film, 7 mm wide. Mounting clip, CLI/P-RM6, and varnish. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 14 of 41 09-Jun-10 7.4 RDR-193 7 W PAR20 LED Driver Using LNK403EG Transformer Build Diagram Pins Side 3L Tape W4 - Finish (FL1) 1L Tape W3 - Finish (FL3) 1L Tape W3 - Start (FL2) W2 - Finish (P2) W2 - Start (P6) 1L Tape W1 - Start (P1) Figure 6 - Transformer Build Diagram. 7.5 Transformer Construction Bobbin Preparation WD 1 Insulation WD 2 Insulation WD 3 Insulation WD 4 Insulation Final Assembly Page 15 of 41 Place the bobbin item [2] on the mandrel such that pin side on the left side. Winding direction is the clockwise direction. Start at pin 1, wind 64 turns of #35 AWG item [3] from left to right two layers. At the last turn exit the same slot, leave enough length wire floating to wind next 64 turns in WD4. Apply one layer of tape [6] for insulation. Start at pin 6, wind 26 turns of #36 AWG [4] wire from left to right. Finish at pin 2. Apple one layer of tape [6] for insulation. Leave about 1" of wire item [5], use small tape to mark as FL2, enter into slot of secondary side of bobbin, wind 22 turns in two layers. At the last turn exit the same slot, leave about 1", and mark as FL3. Apple one layer of tape [6] for insulation. Continue to wind with floating wire, 64 turns of #35 AWG from left to right two layers. Leave 1" and mark as FL1 Apply three layers of tape [6] for insulation. Cut FL1, FL2, FL3 wire length to 0.75". Grind core. Assemble core and varnish using item [7]. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 8 Transformer Design Spreadsheet ACDC LinkSwitch-PH 042910; Rev.1.0; Copyright Power Integrations 2010 INPUT ENTER APPLICATION VARIABLES Dimming required YES INFO Info VACMIN VACMAX 265 fL VO OUTPUT UNIT LinkSwitch-PH_042910: Flyback Transformer Design Spreadsheet !!! Info. When configured for dimming, best output current line regulation is achieved over a single input voltage range. YES 90 V 265 V Maximum AC input voltage 50 Hz AC Mains Frequency 21.00 Minimum AC Input Voltage V Typical output voltage of LED string at full load VO_MAX 23.10 V Maximum expected LED string Voltage. VO_MIN 18.90 V Minimum expected LED string Voltage. V_OVP 25.41 V Over-voltage protection setpoint 6.9 W Output Power V Bias Voltage IO 0.33 Typical full load LED current PO n 0.8 VB 25 Estimated efficiency of operation 25 ENTER LinkSwitch-PH VARIABLES LinkSwitch-PH LNK403 Chosen Device Universal LNK403 Current Limit Mode FULL Power Out 12.5W 115 Doubled/230V 12.5W Select "RED" for reduced Current Limit mode or "FULL" for Full current limit mode FULL ILIMITMIN 0.81 A Minimum current limit ILIMITMAX 0.92 A Maximum current limit fS 66000 Hz Switching Frequency fSmin 62000 Hz Minimum Switching Frequency fSmax 70000 Hz Maximum Switching Frequency IV 39.9 uA RV 4 M-ohms Upper V pin resistor 1E+12 M-ohms Lower V pin resistor 139.0 uA RFB1 158.3 k-ohms VDS 10 V LinkSwitch-PH on-state Drain to Source Voltage RV2 IFB 139.00 V pin current FB pin current (85 uA < IFB < 210 uA) FB pin resistor VD 0.50 V Output Winding Diode Forward Voltage Drop (0.5 V for Schottky and 0.8 V for PN diode) VDB 0.70 V Bias Winding Diode Forward Voltage Drop Key Design Parameters KP 1.06 LP VOR 125.00 Expected IO (average) KP_VACMAX Ripple to Peak Current Ratio (For PF > 0.9, 0.4 < KP < 0.9) 1.06 Info TON_MIN 2450 uH 125 V Reflected Output Voltage. 0.33 A Expected Average Output Current !!! Info. PF at high line may be less than 0.9. Decrease KP for higher PF 1.35 1.91 Primary Inductance us Minimum on time at maximum AC input voltage ENTER TRANSFORMER CORE/CONSTRUCTION VARIABLES Core Type RM6 Bobbin AE RM6 #N/A 0.3600 0.36 Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com P/N: cm^2 #N/A Core Effective Cross Sectional Area Page 16 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG LE 2.8600 2.86 cm AL 2280.0 2280 nH/T^2 BW 6.4 6.4 mm Bobbin Physical Winding Width 0 mm Safety Margin Width (Half the Primary to Secondary Creepage Distance) M L NS Core Effective Path Length Ungapped Core Effective Inductance 4.00 4 Number of Primary Layers 22 22 Number of Secondary Turns DC INPUT VOLTAGE PARAMETERS VMIN 127 V Peak input voltage at VACMIN VMAX 375 V Peak input voltage at VACMAX CURRENT WAVEFORM SHAPE PARAMETERS DMAX 0.50 IAVG 0.33 A Average Primary Current Minimum duty cycle at peak of VACMIN IP 0.42 A Peak Primary Current (calculated at minimum input voltage VACMIN) IRMS 0.14 A Primary RMS Current (calculated at minimum input voltage VACMIN) LP 2450 uH NP 128 Primary Winding Number of Turns NB 26 Bias Winding Number of Turns TRANSFORMER PRIMARY DESIGN PARAMETERS Primary Inductance ALG 150 nH/T^2 Gapped Core Effective Inductance BM 2244 Gauss Maximum Flux Density at PO, VMIN (BM<3100) BP 2715 Gauss BAC 1122 Gauss Peak Flux Density (BP<3700) AC Flux Density for Core Loss Curves (0.5 X Peak to Peak) ur 1441 LG 0.28 BWE 25.6 mm Effective Bobbin Width OD 0.20 mm INS 0.04 mm Maximum Primary Wire Diameter including insulation Estimated Total Insulation Thickness (= 2 * film thickness) DIA 0.16 mm Bare conductor diameter 35 AWG AWG Relative Permeability of Ungapped Core mm Gap Length (Lg > 0.1 mm) Primary Wire Gauge (Rounded to next smaller standard AWG value) CM 32 Cmils CMA 234 Cmils/Amp Bare conductor effective area in circular mils Primary Winding Current Capacity (200 < CMA < 600) TRANSFORMER SECONDARY DESIGN PARAMETERS (SINGLE OUTPUT EQUIVALENT) Lumped parameters ISP 2.45 A Peak Secondary Current ISRMS 0.72 A Secondary RMS Current IRIPPLE 0.65 A CMS 145 Cmils AWGS 28 AWG DIAS 0.32 mm ODS 0.29 mm Output Capacitor RMS Ripple Current Secondary Bare Conductor minimum circular mils Secondary Wire Gauge (Rounded up to next larger standard AWG value) Secondary Minimum Bare Conductor Diameter Secondary Maximum Outside Diameter for Triple Insulated Wire VOLTAGE STRESS PARAMETERS VDRAIN Page 17 of 41 628 V Estimated Maximum Drain Voltage assuming maximum LED string voltage (Includes Effect of Leakage Inductance) Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG PIVS 90 V PIVB 107 V 09-Jun-10 Output Rectifier Maximum Peak Inverse Voltage (calculated at VOVP, excludes leakage inductance spike) Bias Rectifier Maximum Peak Inverse Voltage (calculated at VOVP, excludes leakage inductance spike) FINE TUNING (Enter measured values from prototype) V pin Resistor Fine Tuning RV1 4.00 M-ohms Upper V Pin Resistor Value RV2 1E+12 M-ohms Lower V Pin Resistor Value VAC1 115.0 V VAC2 230.0 V Test Input Voltage Condition2 IO_VAC1 0.33 A Measured Output Current at VAC1 Measured Output Current at VAC2 Test Input Voltage Condition1 IO_VAC2 0.33 A RV1 (new) 4.00 M-ohms New RV1 RV2 (new) 20911.63 M-ohms New RV2 V_OV 319.6 V Typical AC input voltage at which OV shutdown will be triggered V_UV 66.3 V Typical AC input voltage beyond which power supply can startup FB pin resistor Fine Tuning RFB1 158 k-ohms Upper FB Pin Resistor Value RFB2 1E+12 k-ohms Lower FB Pin Resistor Value VB1 22.5 V Test Bias Voltage Condition1 VB2 27.5 V Test Bias Voltage Condition2 IO1 0.33 A Measured Output Current at Vb1 Measured Output Current at Vb2 IO2 0.33 A RFB1 (new) 158.3 k-ohms New RFB1 RFB2(new) 1.00E+12 k-ohms New RFB2 Note: Actual RFB = 142 k due to lower bias voltage. Measured PF at 230 VAC was 0.9. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 18 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 9 Performance Data All measurements performed at room temperature. 9.1 Efficiency vs. Line and Output (LED String) Voltage 9.1.1 21 V Hz 60 60 60 60 Hz 50 50 50 50 50 50 VIN (VAC) 90 100 115 130 VIN (VAC) 185 200 215 230 245 265 PIN (W) 7.63 8.1 8.78 9.37 PIN (W) 10.82 11.15 11.48 11.8 12.11 12.53 VOUT (V) 21 21.09 21.24 21.36 VOUT (V) 21.63 21.68 21.74 21.79 21.83 21.88 IOUT (mA) 295 314 340 362 IOUT (mA) 415 426 437 448 458 471 POUT (W) 6.20 6.62 7.22 7.73 POUT (W) 8.98 9.24 9.50 9.76 10.00 10.31 Efficiency (%) 81 82 82 83 Efficiency (%) 83 83 83 83 83 82 VIN (VAC) 90 100 115 130 VIN (VAC) 185 200 215 230 245 265 PIN (W) 6.57 6.95 7.48 7.98 PIN (W) 9.27 9.56 9.84 10.12 10.4 10.76 VOUT (V) 17.82 17.91 18.04 18.14 VOUT (V) 18.42 18.43 18.5 18.54 18.59 18.64 IOUT (mA) 301 318 343 365 IOUT (mA) 418 429 440 451 461 474 POUT (W) 5.36 5.70 6.19 6.62 POUT (W) 7.70 7.91 8.14 8.36 8.57 8.84 Efficiency (%) 82 82 83 83 Efficiency (%) 83 83 83 83 82 82 PF 0.97 PF 0.9 9.1.2 18 V Hz 60 60 60 60 Hz 50 50 50 50 50 50 Page 19 of 41 PF 0.96 PF 0.88 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 9.1.3 24 V Hz 60 60 60 60 Hz 50 50 50 50 50 50 84 VIN (VAC) 90 100 115 130 VIN (VAC) 185 200 215 230 245 265 PIN (W) 8.76 9.26 10.07 10.76 PIN (W) 12.39 12.77 13.14 13.51 13.86 14.32 VOUT (V) 24.07 24.17 24.35 24.49 VOUT (V) 24.8 24.86 24.92 24.98 25.04 25.1 IOUT (mA) 290 309 337 359 IOUT (mA) 412 424 435 446 456 468 POUT (W) 6.98 7.47 8.21 8.79 POUT (W) 10.22 10.54 10.84 11.14 11.42 11.75 Efficiency (%) 80 81 81 82 Efficiency (%) 82 83 82 82 82 82 200 225 PF 0.97 PF 0.91 18 V 21 V 24 V Efficiency (%) 83 82 81 80 79 75 100 125 150 175 250 275 Input Voltage (VAC) Figure 7 - Efficiency vs. Input Voltage, Room Temperature. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 20 of 41 09-Jun-10 9.2 RDR-193 7 W PAR20 LED Driver Using LNK403EG Regulation 9.2.1 Output Voltage and Line 500 115 V 230 V Output Current (mA) 450 400 350 300 250 17 18 19 20 21 22 23 24 25 Output Voltage (VDC) Figure 8 - Voltage and Line Regulation, Room Temperature. The line regulation result shown above is typical for a design where the phase angle dimming mode of U1 is selected (to provide a very wide dimming range). For a given line voltage the output current can be centered by changing the value of the FEEDBACK resistor (R15). The table below shows the resistor values to adjust the mean output current at specific input voltages, Line Voltage (VAC) 100 115 230 Value of R15 (k) 133 143 182 Table 1 - Feedback Resistor Value to Center Output Current at Different Nominal Line Voltages. Page 21 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 9.2.2 Line Regulation 370 21 V 18 V 24 V 360 Output Current (mA) 350 340 330 320 310 300 290 280 85 90 95 100 105 110 115 120 125 130 135 Input Voltage (VAC) Figure 9 - Low Line Regulation, Room Temperature, Full Load. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 22 of 41 09-Jun-10 480 Output Current (mA) 470 RDR-193 7 W PAR20 LED Driver Using LNK403EG 21 V 18 V 24 V 460 450 440 430 420 410 180 190 200 210 220 230 240 Input Voltage (VAC) 250 260 Figure 10 - High Line Regulation, Room Temperature, Full Load. Page 23 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 270 RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 10 Thermal Performance Images captured after running for 30 minutes at room temperature (25 C), full load. This indicates an operating temperature of 100C at 50C for the LinkSwitch-PH. The addition of a small heatsink (width of board) to the device reduces the operating temperature by ~25C. 10.1 VIN = 115 VAC Figure 11 - Top Side. Figure 12 - Bottom Side. 10.2 VIN = 230 VAC Figure 13 - Top Side. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 14 - Bottom Side. Page 24 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 11 Harmonic Data The design passes Class C requirement. 70 Class C Limit RD-193 Harmonic Data at 115 VAC 60 Current (mA) 50 40 30 20 10 0 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 Harmonic Figure 15 - 115 VAC Harmonic, Room Temperature, Full Load. Page 25 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 45 09-Jun-10 Class C limit RD-193 Harmonic Data at 230 VAC 40 Current (mA) 35 30 25 20 15 10 5 0 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 Harmonic Figure 16 - 230 VAC Harmonic, Room Temperature, Full Load. THD (%) VIN =115 VAC Limit (%) Margin (%) 21.00 THD (%) 27.80 33 12.0 VIN = 230 VAC Limit (%) Margin (%) 33 5.2 Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 26 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 12 Waveforms 12.1 Input Line Voltage and Current Figure 17 - 90 VAC, Full Load. Upper: IIN, 0.2 A / div. Lower: VIN, 200 V, 10 ms / div. Figure 18 - 265 VAC, Full Load. Upper: IIN, 0.1 A / div. Lower: VIN, 500 V / div., 10 ms / div. 12.2 Drain Voltage and Current Figure 19 - 90 VAC, Full Load. Upper: IDRAIN, 0.2 A / div. Lower: VDRAIN, 200 V, 5 s / div. Page 27 of 41 Figure 20 - 265 VAC, Full Load. Upper: IDRAIN, 0.2 A / div. Lower: VDRAIN, 200 V / div., 5 s / div. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 12.3 Output Voltage and Ripple Current Figure 21 - 90 VAC, Full Load. Upper: IRIPPLE, 0.2 A / div. Lower: VOUTPUT 5 V, 5 ms / div. Figure 22 - 265 VAC, Full Load. Upper: IRIPPLE, 0.2 A / div. Lower: VOUTPUT 5 V, 5 ms / div. 12.4 Drain Voltage and Current Start-up Profile Figure 23 - 90 VAC, Full Load. Upper: IDRAIN, 0.2 A / div. Lower: VOUTPUT, 5 V, 10 ms / div. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 24 - 265 VAC, Full Load. Upper: IRIPPLE, 0.2 A / div. Lower: VOUTPUT, 5 V, 10 ms / div. Page 28 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 12.5 Output Current and Drain Voltage at Shorted Output Figure 25 - 90 VAC, Full Load. Upper: IOUTPUT, 1 A / div. Lower: VDRAIN, 200 V, 200 ms / div. Figure 26 - 265 VAC, Full Load. Upper: IOUTPUT, 1 A / div. Lower: VDRAIN, 200 V, 200 ms / div. 12.6 Open Load Output Voltage Figure 27 - Output Voltage: 115 VAC. VOUT, 10 V / div., 500 ms / div. Page 29 of 41 Figure 28 - Output Voltage: 230 VAC. VOUT, 10 V / div., 500 ms / div. Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 13 Dimming 13.1 Input Phase vs. Output Current 115 VAC Phase Angle IOUT (mA) 163 310 91 150 61 70 35 24 9 2 0 0 230 VAC Phase Angle IOUT (mA) 160 430 88 210 61 110 49 74 34 28 11 8 0 0 0.5 115 VAC 230 VAC 0.45 LED Current (A) 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 20 40 60 80 100 120 140 160 180 Phase Angle () Figure 29 - Input Phase vs. Output Current. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 30 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 13.2 Output Voltage and Input Current Waveforms During Dimming 13.2.1 VIN = 115 VAC / 60 Hz Figure 30 - 115 VAC, Full Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Figure 31 - 115 VAC, 60 Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Figure 32 - 115 VAC, 35 Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Figure 33 - 115 VAC, 8 Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Page 31 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 13.2.2 VIN = 230 VAC / 50 Hz Figure 34 - 230 VAC, Full Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Figure 35 - 230 VAC, 49 Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Figure 36 - 230 VAC, 34 Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Figure 37 - 230 VAC, 12 Phase. Upper: VOUT, 10 V / div. Lower: IIN, 0.1 A / div., 5 ms / div. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 32 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 14 Line Surge Differential and common input line 200A ring wave testing was completed on a single test unit to IEC61000-4-5. Input voltage was set at 230 VAC / 60 Hz. Output was loaded at full load and operation was verified following each surge event. Surge Level (V) 2500 2500 2500 2500 2500 2500 Input Voltage (VAC) 230 230 230 230 230 230 Injection Location L to N L to N L to PE L to PE N to PE N to PE Injection Phase () 90 90 90 90 90 90 Test Result (Pass/Fail) Pass Pass Pass Pass Pass Pass Unit passes under all test conditions. Page 33 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 15 Conducted EMI Note: Refer to table for margin to standard - blue line is peak measurement but limit line is quasi peak. Power Integrations 27.Apr 10 15:55 RBW MT 9 kHz 500 ms Att 10 dB AUTO dBV 100 kHz 120 EN55015Q LIMIT CHECK 110 1 MHz PASS 10 MHz SGL 1 PK CLRWR 100 90 2 AV CLRWR TDF 80 70 60 EN55015A 50 6DB 40 30 20 10 0 -10 -20 9 kHz Trace1: 30 MHz EDIT PEAK LIST (Final Measurement Results) EN55015Q Trace2: EN55015A Trace3: --- TRACE FREQUENCY LEVEL dBV DELTA LIMIT dB 2 Average 128.247618558 kHz 26.98 N gnd 2 Average 132.133649648 kHz 31.57 N gnd 2 Average 136.137431366 kHz 29.83 N gnd 1 Quasi Peak 190.46019728 kHz 48.16 L1 gnd -15.85 2 Average 200.175581485 kHz 40.71 N gnd -12.89 1 Quasi Peak 261.871472881 kHz 40.66 N gnd -20.70 1 Quasi Peak 332.507282579 kHz 45.95 L1 gnd -13.43 2 Average 397.727746704 kHz 38.88 L1 gnd -9.01 1 Quasi Peak 401.705024172 kHz 49.29 L1 gnd -8.52 1 Quasi Peak 466.367062279 kHz 48.81 N gnd -7.76 2 Average 466.367062279 kHz 38.69 N gnd -7.88 1 Quasi Peak 530.769219795 kHz 46.57 L1 gnd -9.42 2 Average 530.769219795 kHz 35.42 L1 gnd -10.57 2 Average 598.084042089 kHz 36.37 L1 gnd -9.62 1 Quasi Peak 667.263434405 kHz 48.01 N gnd -7.98 2 Average 667.263434405 kHz 35.42 N gnd -10.57 1 Quasi Peak 935.888336808 kHz 45.80 L1 gnd -10.19 2 Average 4.16322710559 MHz 38.65 N gnd -7.34 1 Quasi Peak 4.33227082061 MHz 45.55 N gnd -10.44 Figure 38 - Conducted EMI, Maximum Steady State Load, 115 VAC, 60 Hz, and EN55015 B Limits. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 34 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG Power Integrations 27.Apr 10 15:58 RBW MT 9 kHz 500 ms Att 10 dB AUTO dBV 100 kHz 120 EN55015Q LIMIT CHECK 110 1 MHz PASS 10 MHz SGL 1 PK CLRWR 100 90 2 AV CLRWR TDF 80 70 60 EN55015A 50 6DB 40 30 20 10 0 -10 -20 9 kHz Trace1: 30 MHz EDIT PEAK LIST (Final Measurement Results) EN55015Q Trace2: EN55015A Trace3: --- TRACE FREQUENCY LEVEL dBV DELTA LIMIT dB 2 Average 130.825395691 kHz 32.43 N gnd 2 Average 136.137431366 kHz 34.96 L1 gnd 1 Quasi Peak 192.364799253 kHz 47.32 L1 gnd -16.60 2 Average 202.1773373 kHz 38.56 N gnd -14.95 1 Quasi Peak 267.135089486 kHz 41.78 N gnd -19.42 2 Average 269.806440381 kHz 34.00 N gnd -17.11 2 Average 335.832355405 kHz 33.36 L1 gnd -15.94 1 Quasi Peak 352.963180679 kHz 39.19 L1 gnd -19.69 2 Average 405.722074413 kHz 33.60 N gnd -14.13 1 Quasi Peak 409.779295157 kHz 42.10 N gnd -15.54 2 Average 471.030732902 kHz 31.24 L1 gnd -15.25 1 Quasi Peak 515.159375557 kHz 41.49 N gnd -14.50 2 Average 541.437681113 kHz 33.55 N gnd -12.44 2 Average 673.936068749 kHz 32.91 L1 gnd -13.08 2 Average 4.37559352882 MHz 40.83 N gnd -5.16 1 Quasi Peak 4.55326017222 MHz 46.83 N gnd -9.16 Figure 39 - Conducted EMI, Maximum Steady State Load, 230 VAC, 60 Hz, and EN55015 B Limits. Page 35 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 16 Production Distribution Data Each RD-193 board is ATE tested and the data recorded prior to shipping. The distribution data for output current is presented below for a fixed line condition of 115 VAC and a device junction temperature of 50C. This shows very low unit to unit variation (sigma of 3.3 mA) which includes both the device and external component influences. Histogram of Average Output Current Normal Vin = 115 VAC 35 Mean StDev N 30 0.3358 0.003328 92 Frequency 25 20 15 10 5 0 0.30 0.31 0.32 0.33 Iout (A) 0.34 0.35 0.36 Figure 40 - Production Variation of IOUT at 115 VAC. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 36 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 17 Revision History Date 09-Jun-10 Page 37 of 41 Author DK Revision 1.0 Description & changes Initial Release Reviewed Apps and Mktg Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 18 Appendix 18.1 Dimming Test with TRIAC Dimmer Switches 18.1.1 115 VAC Input, 60 Hz Style Country Manufacturer Model number Max Current (mA) Dimming Test Data Controlled Min. Min. Current Current without Off Switch (mA) (mA) Rotary 1 Taiwan WS-5005 325 3 0 2 USA Leviton OB4911 324 16 0 1 USA Lutron GLR11-F38875 288 14 0 2 Taiwan SG Electric XH004186 310 2 0 Slider 18.1.2 230 VAC Input, 50 Hz Dimming Test Data Min. Current Style Country Manufacturer Model Number Max. Current Controlled Min. Current without Off Switch (mA) (mA) (mA) Rotary 1 Taiwan Y-25088A 440 2 2 Taiwan 3 Taiwan Y-25082A 439 2 D-2160B 442 4 China CLIPMEI 440 5 China MBR 440 6 China KBE 438 0 0 30 5 0 92 7 0 7 China MANK NK/TG100001 441 8 China SB Electric BM2 426 2 0 9 China EBAHuang 440 1 0 10 China Myongbo 444 100 11 China TCL 438 48 12 Italy RTS34DLI 444 53 L2.0 Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 120 Page 38 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG 18.2 Audible Noise Test Data Unit measured open frame with calibrated laboratory microphone placed 25 mm above the transformer. Results show very acceptable audible noise levels created by supply when using leading edge phase angle dimming. Levels measured were only slightly above noise floor. 18.2.1 VIN = 115 VAC, Full Phase +80 +70 +60 +50 +40 d B r A +30 +20 +10 +0 -10 -20 -30 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k 22k Hz Figure 41 - 2 kHz - 22 kHz. 18.2.2 VIN = 115 VAC, Half Phase +80 +70 +60 +50 +40 d B r A +30 +20 +10 +0 -10 -20 -30 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k 22k Hz Figure 42 - 2 kHz - 22 kHz. Page 39 of 41 Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com RDR-193 7 W PAR20 LED Driver Using LNK403EG 09-Jun-10 18.2.3 VIN = 230 VAC, Full Phase +80 +70 +60 +50 +40 d B r +30 +20 A +10 +0 -10 -20 -30 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k 22k Hz Figure 43 - 2 kHz - 22 kHz. 18.2.4 VIN = 230 VAC, Half Phase +80 +70 +60 +50 +40 d B r A +30 +20 +10 +0 -10 -20 -30 2k 4k 6k 8k 10k 12k 14k 16k 18k 20k 22k Hz Figure 44 - 2 kHz - 22 kHz. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page 40 of 41 09-Jun-10 RDR-193 7 W PAR20 LED Driver Using LNK403EG For the latest updates, visit our website: www.powerint.com Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS. PATENT INFORMATION The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations' patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at http://www.powerint.com/ip.htm. The PI Logo, TOPSwitch, TinySwitch, LinkSwitch, DPA-Switch, PeakSwitch, EcoSmart, Clampless, E-Shield, Filterfuse, StackFET, PI Expert and PI FACTS are trademarks of Power Integrations, Inc. Other trademarks are property of their respective companies. (c)Copyright 2010 Power Integrations, Inc. Power Integrations Worldwide Sales Support Locations WORLD HEADQUARTERS 5245 Hellyer Avenue San Jose, CA 95138, USA. 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