IS31LT3916 Isolation Bulb 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 90~260VAC/50~60Hz power supply LED array(7 LEDs in series) Recommended Input and Output Ratings Input: 90~260VAC Output: 7LEDs in series(24V/640mA) Absolute Maximum Ratings ≤ 265VAC power supply ≤ 28V Vout (Total Vf) Caution: Do not exceed the conditions listed above, otherwise the board will be damaged or the output will be limited. Procedure 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 Order information Part Number Package Type IS31LT3916-SLS2-EBBULBISO MSOP-8 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. Figure 1 Picture of DEMO Board (NOTE: Physical dimensions are (L x W x H): 68mm x 28mm x 25mm) Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 1 IS31LT3916 Isolation Bulb 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 Y Cap JN102M CY 1 0.15 5 SMD Cap NC C1,C5 1 0 6 SMD Cap 1nF±10%,500V,1206 C2 1 0.1 7 AL Cap 470uF±10%,35V,10mm*23mm C3,C4 2 0.4 8 CBB Cap 100nF±10%,400V C6 1 0.15 9 SMD Cap 1nF±10%,16V,0805 C7 1 0.04 10 SMD Cap 1uF±10%,50V,0805 C8 1 0.1 11 SMD Cap 10uF±10%,50V,1206 C9 1 0.1 12 SMD Cap 1uF±10%,50V,1206 C10 1 0.1 13 Rectifying Bridge M7,1A,1000V,SMA DB1-DB4 4 0.2 14 Schottky Diode SR5200,5A,200V,DO-201AD D1 1 0.15 15 FR Diode RS1M,1A,1000V,SMA D2 1 0.15 16 SMD Diode 1N4148,200mA,75V,LL34 D3,D4 2 0.1 17 SMD Diode M7,1A,1000V,SMA D5 1 0.05 18 SMD Resistor NC R1 1 0 19 SMD Resistor 4.7KΩ±5%,0805 R2,R4,R13 3 0.018 20 SMD Resistor 120KΩ±5%,1206 R3 1 0.008 21 SMD Resistor 1MΩ±1%,1206 R5,R9 2 0.016 22 SMD Resistor 180KΩ±5%,1206 R6,R10 2 0.016 23 SMD Resistor 680KΩ±1%,1206 R7,R11 2 0.016 24 SMD Resistor 24KΩ±5%,1206 R8 1 0.008 25 SMD Resistor 30Ω±5%,0805 R12 1 0.006 26 SMD Resistor 10Ω±5%,0805 R14 1 0.006 27 SMD Resistor 1.8MΩ±1%,0805 R15 1 0.006 28 SMD Resistor 68KΩ±1%,0805 R16 1 0.006 29 SMD Resistor 240KΩ±1%,0805 R17 1 0.006 30 SMD Resistor 13KΩ±1%,0805 R18 1 0.006 31 SMD Resistor 15KΩ±1%,0805 R19 1 0.006 32 SMD Resistor 1.1Ω±1%,1206 R20,R21,R24 3 0.024 33 SMD Resistor 150KΩ±1%,0805 R22 1 0.006 34 SMD Resistor 10KΩ±1%,0805 R23 1 0.006 35 Inductor 3mH±10%,8*10mm,Isat≥200mA L1,L2,L3 3 0.45 36 Transformer PQ2016,Tp:Ts:Ta=52:15:10,Lp=0.52mH±5% TR 1 2 37 NMOS 4N60,4A/600V,TO-220 Q1 1 1.5 38 PCB 68mm x 28mm 1 0.4 39 IC IS31LT3916,MSOP-8 1 - Total Cost(Exclude IC) Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 U1 6.8 2 IS31LT3916 Isolation Bulb Lighting DEMO Board Guide 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 Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 3 IS31LT3916 Isolation Bulb Lighting DEMO Board Guide Transformer Design ELECTRICAL SPECIFCATIONS: 1. Primary inductance(Lp)=520uH@60kHz 2. Primary Leakage Inductance (Lk) < = 20uH @60KHz 3. Electrical Strength = 3KV, 50/60Hz, 1Min MATERIALS: 1. Core: PQ2016 (Ferrite Material TDK PC40 or equivalent) 2. Bobbin: PQ2016, Primary: 6 pins, Secondary: 8 pins 3. Magnet Wires (PRI&AUX): Type 2-UEW 4. Magnet Wires (SEC): Triple Insulated Wires 5. Layer Insulation Tape: 3M1298 or equivalent. Figure 6 Transformer NO. winding Start End 1 Np1 4 3 number of number of turns plies 26T diameter 0.25mm-2UEW number of plies tape 3 0.02*7.5mm 3 0.02*7.5mm remarks 2P*0.25mm2 Ns 13 11 15T Triple Insulated Wires 3 Np2 3 1 26T 0.25mm-2UEW 2 0.02*7.5mm 4 Na 5 6 10T 0.15mm-2UEW 3 0.02*7.5mm Test result Input voltage(VAC) 90 100 110 120 130 140 150 160 PF THD(%) 0.999 0.998 0.998 0.997 0.996 0.994 0.993 0.991 2.3 2.3 2.7 2.7 2.8 2.8 2.9 3.0 Input Output Output Output Efficiency(%) power(W) voltage(V) current(mA) power(W) 17.94 24.09 626 15.08 84.06 17.74 24.11 625 15.07 84.94 17.70 24.12 628 15.15 85.58 17.42 24.11 622 15.00 86.09 17.71 24.15 631 15.24 86.05 17.50 24.10 628 15.13 86.48 17.49 24.06 630 15.16 86.67 17.54 24.09 628 15.13 86.25 Integrated Silicon Solution, Inc. – www.issi.com R1.0, 3/07/2013 4 IS31LT3916 Isolation Bulb Lighting DEMO Board Guide 0.988 0.985 0.981 0.977 0.973 0.968 0.961 0.955 0.948 0.94 3.0 3.1 3.1 3.1 3.0 3.0 3.0 3.0 3.1 3.1 17.81 17.45 17.20 17.34 17.57 17.54 17.45 17.52 17.51 17.51 24.06 24.05 24.03 24.04 24.07 24.05 24.04 24.04 24.04 24.04 700 100 650 95 634 632 623 623 634 634 631 632 632 631 15.25 15.20 14.97 14.98 15.26 15.25 15.17 15.19 15.19 15.17 85.65 87.10 87.04 86.37 86.85 86.93 86.93 86.72 86.77 86.63 90 600 Efficiency(%) 550 500 450 400 85 80 75 70 65 60 350 55 300 50 85 110 135 160 185 Vin(VAC) 210 235 260 85 110 Figure 7 Line regulation 135 160 185 Vin(VAC) 235 260 Figure 8 Efficiency&Vin 10 1 PF 210 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 THD(%) Output current(mA) 170 180 190 200 210 220 230 240 250 260 PF THD 0 0.5 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 Isolation Bulb 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 Isolation Bulb 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