IS31LT3916 Isolation Bulb Lighting DEMO Board Guide

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)
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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
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6.8
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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
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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
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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
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IS31LT3916 Isolation Bulb Lighting DEMO Board Guide
EMI test
Figure 10 Conduction EMI_L
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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.
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