Description Features Applications Quick Start Ordering

IS31LT3932 Bulb Lighting Evaluation Board Guide

Description
LED PAR
IS31LT3932 is a universal LED driver, which can operate in
fly-back, buck-boost and buck convertor. For isolation
Quick Start
fly-back, it can achieve high PF, high current accuracy, ± 5 %
Recommended Equipment
load and line regulation and wide voltage input voltage range,
●
85~265VAC/50~60Hz power supply
without loop compensation. For buck convertor, it also can
achieve high PF, high current accuracy, high efficiency, good
Absolute Maximum Ratings
load and line regulation and wide voltage input voltage range,
●≤ 265VAC power supply
without loop compensation. with very few components.
●≤ 39V Vout (Total Vf)
IS31LT3932 has special power line sense and output voltage
sense circuits, operates in primary feedback mode without
Caution: Do not exceed the conditions listed above,
opto-coupler and achieve stable output current control without
otherwise the board will be damaged or the output will
any loop compensation.
be limited
IS31LT3932 has multiple protections to improve the system
Procedure
reliability, including LED open circuit, LED short circuit, UVLO,
The IS31LT3932 DEMO Board is fully assembled and tested.
OVP, current sense resistor short, the primary over current
Follow the steps listed below to verify board operation.
limit and over temperature protections.
Caution: Do not turn on the power supply until all
connections are completed.
Features

Universal isolation and non-isolation

Single stage PFC fly-back

No loop compensation required

No opto-coupler required

± 3 %LED current accuracy

± 5 % line regulation and load regulation

Wide input voltage: 85~265Vac

Low start-up current(15uA)

Valley turn-on MOSFET to achieve high efficiency
1)
Connect the input pin N of the Evaluation Board via the
main power switch to AC power supply N.
2)
Connect the input pin L of the Evaluation L.
3)
Turn on the power supply.
for buck application

Few external components

1A sourcing current and 2A sinking current

multiple protections
Ordering Information
PART#
IS31LT3932-GRLS2-TR
TEMP
IC
RANGE
PACKAGE
-40 to 125°C
SOP-8
Applications

LED bulb

LED Tube lamp
For pricing, delivery, and ordering information, please contact ISSI at [email protected]
or call +1-408-969-6600
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IS31LT3932 Bulb Lighting Evaluation Board Guide
Figure 1 IS31LT3932 Evaluation Board Schematic
Note: ISSI Evaluation Board does include a LED array
Figure 2 Picture of Evaluation Board
NOTE: Physical dimensions of power board are (L×W×H): 53mm×20mm×15mm
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IS31LT3932 Bulb Lighting Evaluation Board Guide
PCB Layout
Figure 3 PCB Layout – Top layer
Figure 4 PCB Layout – Bottom layer
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IS31LT3932 Bulb Lighting Evaluation Board Guide
Bill of Materials
No.
Name
1
FUSE
2
Bridge rectifier
3
Inductor
4
Description
Ref Des.
Qty.
1A250V Φ3
F1
1
MB6S
BD1
1
3.3mH 0510
L1,L2,L3
3
Resistor
5.5kΩ 1%
0805
R2,R4,R13
3
5
Resistor
1M Ω 1%
1206
R5,R9
2
6
Resistor
13kΩ 1%
0805
R18
1
7
Resistor
300kΩ 1% 1206
R6,R10
3
8
Resistor
240kΩ 1%
R17
1
9
Resistor
1.0Ω 1%
1206
R20
1
10
Resistor
200Ω 1%
0805
R7
1
11
Resistor
10kΩ 1%
0805
R23
1
12
Resistor
240kΩ 1%
0805
R22
1
13
Resistor
68k Ω 1%
1206
R8
1
14
Resistor
0Ω 1%
0603
R12
1
15
Resistor
150kΩ 1%
R3
1
16
Resistor
R21,R1,C1,C5,C11,C8,
0
17
CBB-CAP
100nF 400V
18
SMD-CAP
1nF 1000V
19
E-CAP
220uF 50V
20
SMD-CAP
1nF 25V
21
SMD-CAP
1uF
22
SMD-CAP
10uF
23
SMD-DIODE
ES1J
24
SMD-DIODE
1N4007
25
SMD-DIODE
1N4148
26
SMD-ZENER
39V
27
MOS
28
IC
29
TRANSFORMER
30
TH- DIODE
MBS
0805
0603
NC
Mfr
P/N
R14,D3
pin10
C1
1
1206
C2
1
0810
C3,C4
2
C7
1
C10
1
C9
1
D5,D2
2
SOD-123
D6
1
SOD-80
D4
1
SOD-80
D7
1
2N80B
TO-251
Q1
1
IS31LT3932
SOP-8
U1
1
TR
1
D1
1
X7R
50V
0805
X7R 1206
50V
X7R
0805
SMA
1%
EE16 5+5
SB5200
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DO-201AD
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IS31LT3932 Bulb Lighting Evaluation Board Guide
Transformer Design
ELECTRICAL SPECIFCATIONS:
1.Primary inductance(Lp)[email protected]
2. Primary Leakage Inductance (Lk)< = 30uH @10KHz
3. Electrical Strength = 3KV, 50/60Hz,1Min
MATERIALS:
1. Core:EE16(Ferrite Material TDK PC40 or equivalent)
2. Bobin:EE16 Primary 5,Secondary:5
3.. Magnet Wires (Pri) : Type 2-UEW
4. Magnet Wire (Sec) : Triple Insulated Wires
5. Layer Insulation Tape :3M1298 or equivalent.
SCHEMTIC
No
winding
start
end
Wires
1
2
3
N1
N2
N3
3
10
4
10
1
5
85T
44T
40T
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Tape
0.18mm-QA
0.35mm-QA
0.18mm-QA
5
9mm-3
9mm-2
9mm-2
5
IS31LT3932 Bulb Lighting Evaluation Board Guide
Test Data
5LED
Vin PF THD PIN VOUT IOUT eff.. 85
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
265
0.998
0.998
0.997
0.996
0.994
0.991
0.988
0.984
0.978
0.972
0.967
0.961
0.953
0.946
0.938
0.931
0.923
0.913
0.906
0.901
2.0%
1.9%
2.3%
2.6%
3.2%
4.0%
5.0%
6.0%
8.0%
9.4%
10.9%
11.7%
13.4%
14.8%
17.3%
18.9%
20.6%
21.9%
24.7%
24.4%
3.35
3.35
3.35
3.39
3.41
3.42
3.46
3.43
3.27
3.31
3.31
3.38
3.39
3.47
3.45
3.53
3.58
3.61
3.66
3.71
14.96
14.96
14.96
14.98
14.99
14.99
15.02
15.00
14.93
14.95
14.95
14.99
14.99
15.01
15.02
15.06
15.05
15.06
15.08
15.10
177
178
180
183
185
186
188
188
178
181
181
184
183
187
186
189
191
192
195
196
79.04%
79.49%
80.38%
80.87%
81.32%
81.52%
81.61%
82.22%
81.27%
81.75%
81.75%
81.60%
80.92%
80.89%
80.98%
80.63%
80.29%
80.10%
80.34%
79.77%
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IS31LT3932 Bulb Lighting Evaluation Board Guide
6LED
Vin PF THD PIN VOUT IOUT eff.. 85
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
265
0.999
0.998
0.998
0.997
0.996
0.994
0.992
0.989
0.984
0.981
0.976
0.970
0.967
0.960
0.954
0.947
0.941
0.935
0.926
0.922
1.7%
1.6%
2.0%
2.2%
2.6%
3.1%
3.9%
4.4%
5.7%
7.2%
8.6%
9.5%
10.9%
11.7%
13.4%
15.1%
17.3%
18.8%
19.8%
20.1%
4.00
4.01
3.99
4.01
4.02
4.10
4.11
4.16
3.93
3.92
3.97
4.00
4.05
4.11
4.15
4.17
4.22
4.31
4.33
4.34
17.94
17.98
17.95
17.95
17.95
18.07
18.06
18.08
17.98
17.98
17.99
17.98
18.02
18.07
18.07
18.05
18.08
18.11
18.10
18.08
177
178
180
182
184
187
188
190
180
180
182
184
185
187
190
189
191
194
193
196
79.38%
79.81%
80.98%
81.47%
82.16%
82.42%
82.61%
82.58%
82.35%
82.56%
82.47%
82.71%
82.31%
82.22%
82.73%
81.81%
81.83%
81.52%
80.68%
81.65%
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IS31LT3932 Bulb Lighting Evaluation Board Guide
7LED
Vin PF THD PIN VOUT IOUT eff.. 85
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
265
0.999
0.999
0.998
0.998
0.997
0.996
0.994
0.992
0.988
0.985
0.982
0.978
0.974
0.969
0.963
0.959
0.953
0.946
0.940
0.937
1.8%
1.7%
1.6%
1.9%
2.2%
2.5%
3.2%
3.6%
4.9%
5.6%
6.5%
7.4%
8.4%
10.4%
10.9%
12.3%
13.3%
15.2%
16.1%
17.3%
4.68
4.64
4.62
4.69
4.67
4.75
4.76
4.81
4.55
4.58
4.63
4.63
4.68
4.71
4.79
4.82
4.89
4.89
4.98
5.00
20.93
21.03
20.91
21.10
20.92
21.16
21.15
21.16
21.05
21.06
21.06
21.06
21.06
21.06
21.09
21.20
21.19
21.13
21.13
21.13
177
177
179
182
183
185
186
189
181
181
183
183
184
185
188
189
190
193
194
195
79.16%
80.22%
81.01%
81.88%
81.98%
82.41%
82.64%
83.14%
83.74%
83.23%
83.24%
83.24%
82.80%
82.72%
82.77%
83.13%
82.33%
83.40%
82.31%
82.41%
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IS31LT3932 Bulb Lighting Evaluation Board Guide
8LED
Vin PF THD PIN VOUT IOUT eff.. 85
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
265
1.000
1.000
0.999
0.998
0.998
0.997
0.995
0.994
0.991
0.988
0.986
0.982
0.979
0.975
0.972
0.966
0.960
0.956
0.951
0.949
1.8%
1.7%
1.7%
1.7%
1.9%
2.2%
2.5%
3.1%
3.8%
4.8%
5.4%
6.4%
7.4%
8.4%
9.6%
10.2%
11.8%
12.7%
14.3%
14.5%
5.41
5.33
5.27
5.28
5.32
5.41
5.40
5.43
5.14
5.16
5.22
5.23
5.33
5.35
5.40
5.40
5.40
5.60
5.62
5.66
23.90
23.90
23.87
23.94
23.90
24.07
24.03
24.05
23.93
23.95
23.97
23.97
24.00
24.00
24.01
24.02
24.04
24.08
24.07
24.08
178
177
179
180
183
186
187
188
179
180
182
183
185
186
187
187
188
192
193
194
78.64%
79.37%
81.08%
81.61%
82.21%
82.75%
83.22%
83.27%
83.34%
83.55%
83.57%
83.87%
83.30%
83.44%
83.15%
83.18%
83.69%
82.56%
82.66%
82.54%
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IS31LT3932 Bulb Lighting Evaluation Board Guide
9LED
Vin PF THD PIN VOUT IOUT eff.. 85
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
265
1.000
1.000
0.999
0.999
0.998
0.997
0.996
0.995
0.993
0.991
0.988
0.986
0.983
0.980
0.977
0.973
0.969
0.964
0.960
0.958
1.7%
1.8%
1.7%
1.6%
1.7%
1.8%
2.3%
2.6%
3.4%
3.8%
4.7%
5.6%
6.2%
7.1%
8.0%
9.0%
9.9%
11.0%
12.0%
12.6%
6.12
6.05
6.02
5.94
5.94
5.98
6.09
6.11
5.78
5.80
5.80
5.90
5.99
6.03
6.10
6.13
6.18
6.19
6.29
6.32
26.96
26.91
26.95
26.94
26.88
26.95
26.99
27.00
26.86
26.86
26.85
26.87
26.90
26.89
26.90
26.91
26.91
26.89
26.89
26.93
178
178
180
180
182
184
187
189
180
181
181
185
186
187
189
190
191
191
193
195
78.41%
79.17%
80.58%
81.64%
82.36%
82.92%
82.88%
83.52%
83.65%
83.82%
83.79%
84.25%
83.53%
83.39%
83.35%
83.41%
83.17%
82.97%
82.51%
83.09%
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IS31LT3932 Bulb Lighting Evaluation Board Guide
10LED
Vin PF THD PIN VOUT IOUT eff.. 85
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
265
1.000
1.000
1.000
0.999
0.998
0.998
0.997
0.996
0.994
0.992
0.991
0.989
0.986
0.983
0.980
0.977
0.974
0.970
0.965
0.965
1.4%
1.7%
1.7%
1.6%
1.6%
1.7%
2.0%
2.3%
3.0%
3.5%
4.0%
4.7%
5.5%
6.3%
6.9%
8.1%
9.1%
10.0%
10.4%
11.3%
6.90
6.80
6.64
6.62
6.58
6.58
6.67
6.74
6.33
6.43
6.46
6.55
6.56
6.61
6.70
6.73
6.81
6.83
6.85
7.00
30.23
30.01
29.80
29.80
29.79
29.62
29.87
29.89
29.70
29.74
29.74
29.78
29.78
29.79
29.82
29.82
29.84
29.84
29.84
29.92
179
179
180
180
181
183
186
188
179
181
182
185
185
187
189
190
191
192
191
195
78.42%
79.00%
80.78%
81.03%
81.95%
82.38%
83.30%
83.37%
83.99%
83.72%
83.79%
84.11%
83.98%
84.28%
84.12%
84.19%
83.69%
83.88%
83.20%
83.35%
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IS31LT3932 Bulb Lighting Evaluation Board Guide
Line Regulation
PF
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IS31LT3932 Bulb Lighting Evaluation Board Guide
THD
Efficiency
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IS31LT3932 Bulb Lighting Evaluation Board Guide
Load Regulation
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IS31LT3932 Bulb Lighting Evaluation Board Guide
EMI test Report
Figure 5. L line
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IS31LT3932 Bulb Lighting Evaluation Board Guide
Figure 6. N line
Copyright © 2011 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. does not recommend the use of any of its products in life support applications where the failure or malfunction of
the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products
are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances.
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