IS31LT3916 Non-Isolation T8 Lighting DEMO Board Guide Description Quick Start The IS31LT3916 is a primary side, peak current mode, isolated or non-isolated type HBLED driver. The device works at a constant frequency in discontinuous conduction mode to provide a constant power to the output. It eliminates the need for an opto-coupler, TL431, or any other type of secondary side feedback. It operates from a wide input voltage range of 90VAC to 260VAC. The IS31LT3916 integrates over current protection, over voltage protection, as well as includes a thermal shutdown to halt the switching action in the case of abnormally high operating temperatures. Recommended Equipment Features Power factor correction to > 0.90 5% typical current accuracy High efficiency No loop compensation required Wide input voltage range: 90V to 260VAC Isolation and Non-isolation application Internal over-temperature protection Over voltage protection Primary side over current protection Applications LED bulb lamp LED tube lamp General LED lamp 90~260VAC/50~60Hz power supply LED array(24 LEDs in series) Recommended Input and Output Ratings Input: 90~260VAC Output: 24LEDs in series(76V/240mA) Absolute Maximum Ratings ≤ 265VAC power supply ≤ 80V Vout (Total Vf) Caution: Do not exceed the conditions listed above, otherwise the board will be damaged or the output will be limited. Procedure The IS31LT3916 DEMO Board is fully assembled and tested. Follow the steps listed below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. 1) Connect the positive terminal of the LEDs to the LED+ pin of the DEMO and the negative terminal of the LEDs to the LEDpin of the DEMO. 2) Connect the input pins (L and N) of the DEMO via the main power switch to AC power supply. 3) Turn on the power supply. Order information Part Number Package Type IS31LT3916-SLS2-EBT8 MSOP-8 Figure 1 Picture of DEMO Board (NOTE: Physical dimensions are (L x W x H): 220mm x 17mm x 12mm) Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 1 IS31LT3916 Non-Isolation T8 Lighting DEMO Board Guide Bill of Materials No. Name Description Ref Des. Qty. Cost(RMB) 1 Fuse 1A,250V,3*10 F1 1 0.1 2 MOV 7D471K MOV 1 0.1 3 X Cap 0.1uF,275VAC CX1,CX2 2 0.3 4 AL Cap 100uF±10%,100V,10mm*23mm C3,C4 2 0.4 5 SMD Cap NC C5 1 0 6 CBB Cap 100nF±10%,400V C6 1 0.15 7 SMD Cap 1nF±10%,16V,0805 C7 1 0.04 8 SMD Cap 1uF±10%,50V,0805 C8 1 0.1 9 SMD Cap 10uF±10%,50V,1206 C9 1 0.1 10 SMD Cap 1uF±10%,50V,1206 C10 1 0.1 11 Rectifying Bridge DB107,1A,1000V,DB-1 BD1 1 0.3 12 FR Diode ES2J,2A,600V,SMA D1 1 0.15 13 SMD Diode NC D3 1 0 14 SMD Diode 1N4148,200mA,75V,LL34 D4 1 0.05 15 SMD Diode M7,1A,1000V,SMA D5 1 0.05 16 SMD Resistor NC R2 1 0 17 SMD Resistor 4.7KΩ±5%,0805 R4 1 0.006 18 SMD Resistor 1MΩ±1%,1206 R5,R9 2 0.016 19 SMD Resistor 180KΩ±5%,1206 R6,R10 2 0.016 20 SMD Resistor 910KΩ±1%,1206 R7,R11 2 0.016 21 SMD Resistor 68KΩ±5%,1206 R8 1 0.008 22 SMD Resistor 0Ω,0805 R12 1 0.006 23 SMD Resistor 1Ω±1%,1206 R13 1 0.008 24 SMD Resistor NC R14 1 0 25 SMD Resistor 1.6MΩ±1%,0805 R15 1 0.006 26 SMD Resistor 68KΩ±1%,0805 R16 1 0.006 27 SMD Resistor 240KΩ±1%,0805 R17 1 0.006 28 SMD Resistor 13KΩ±1%,0805 R18 1 0.006 29 SMD Resistor 20KΩ±1%,0805 R19 1 0.006 30 SMD Resistor 0.91Ω±1%,1206 R20,R21 2 0.016 31 SMD Resistor 130KΩ±1%,0805 R22 1 0.006 32 SMD Resistor 10KΩ±1%,0805 R23 1 0.006 33 Inductor 3mH±10%,8*10mm,Isat≥200mA L1 1 0.15 Common Mode EE12,L2-1=L2-2=30mH±10%, Chock 0.25mm,100Ts L2 1 0.3 35 Transformer ER2010,Tp:Ta=78:16,Lp=0.43mH±5% TR 1 2 36 NMOS 4N60,4A/600V,TO-220 Q1 1 1.5 37 PCB 230mm x 17mm 1 0.8 38 IC IS31LT3916,MSOP-8 1 - 34 Total Cost(Exclude IC) Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 U1 6.824 2 IS31LT3916 Non-Isolation T8 Lighting DEMO Board Guide L3 F1 90-260VAC L2 MOV CX1 BD1 L1 LED- R2 R4 CX2 C6 R5 R7 R9 R11 R6 R10 U1 VCC 3916 C7 R18 R19 C8 R15 R17 FSET FB C4 C5 R8 D1 R14 D3 Q1 GATE LED+ R12 VSINE R16 C3 TR CS NC GND R13 R20 R21 D5 D4 C9 R22 C10 R23 Figure 2. Schematic of DEMO Board Figure 3 PCB Layout- Top Layer Figure 4 PCB Component Placement Guide - Top Layer Figure 5 PCB Layout- Bottom Layer Transformer Design ELECTRICAL SPECIFCATIONS: 1. Primary inductance(Lp)=430uH@60kHz. MATERIALS: 1. Core: ER2010 (Ferrite Material TDK PC40 or equivalent) 2. Bobbin: ER2010, Primary: 5 pins, Secondary: 5 pins 3. Magnet Wires: Type 2-UEW 4. Layer Insulation Tape :3M1298 or equivalent. Figure 6 Transformer Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 3 IS31LT3916 Non-Isolation T8 Lighting DEMO Board Guide number of number of turns plies number of diameter tape NO. winding Start End 1 Np 3 1 78T 0.33mm-2UEW 2 0.02*4mm 2 Ns 5 6 16T 0.19mm-2UEW 3 0.02*4mm plies remarks Test result PF THD(%) 1 0.999 0.998 0.997 0.997 0.996 0.994 0.993 0.991 0.988 0.985 0.982 0.978 0.973 0.969 0.963 0.956 0.955 0.9 1.0 1.1 1.1 1.2 1.1 1.2 1.2 1.4 1.6 1.6 1.6 1.7 1.7 1.8 1.8 1.9 1.9 Input Output Output Output Efficiency(%) power(W) voltage(V) current(mA) power(W) 20.60 75.2 240 18.05 87.61 20.37 75.2 239 17.97 88.23 20.44 75.2 241 18.12 88.67 20.20 75.1 239 17.95 88.86 20.40 75.1 242 18.17 89.09 20.45 75.2 243 18.27 89.36 20.37 75.2 243 18.27 89.71 20.43 75.2 244 18.35 89.81 20.69 75.2 246 18.50 89.41 20.10 75.1 240 18.02 89.67 20.21 75.1 242 18.17 89.93 19.84 75.0 238 17.85 89.97 19.90 75.0 238 17.85 89.70 19.66 75.0 235 17.63 89.65 19.83 75.0 237 17.78 89.64 19.94 75.0 238 17.85 89.52 19.77 75.0 235 17.63 89.15 19.39 74.9 231 17.302 89.23 280 100 260 95 240 90 220 Efficiency(%) Output current(mA) Input voltage(VAC) 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 200 180 160 85 80 75 70 65 140 60 120 55 50 100 85 110 135 160 185 Vin(VAC) 210 235 Figure 7 Line regulation Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 260 85 110 135 160 185 Vin(VAC) 210 235 260 Figure 8 Efficiency&Vin 4 IS31LT3916 Non-Isolation T8 Lighting DEMO Board Guide 10 0.95 9 0.9 8 0.85 7 0.8 6 0.75 5 0.7 4 0.65 3 0.6 2 0.55 1 0.5 THD(%) PF 1 PF THD 0 85 110 135 160 185 Vin(VAC) 210 235 260 Figure 9 PF,THD&Vin Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 5 IS31LT3916 Non-Isolation T8 Lighting DEMO Board Guide EMI test Figure 10 Conduction EMI_L Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 6 IS31LT3916 Non-Isolation T8 Lighting DEMO Board Guide Figure 11 Conduction EMI_N Copyright © 2013 integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 7