AL1676EV1 Buck 72V 120mA User Guide

AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
General Description
This demonstration board utilizes the
AL1676 Buck LED driver-converter with
single winding inductor providing a cost
effective non-dimmable solution for offline
high brightness LED applications. This userfriendly evaluation board provides users
with quick connection to their different
types of LEDs string. The demonstration
board can be modified to adjust the LED
output current and the number of series
connected LEDs that are driven.
A BOM, schematic and layout are included
that describes the parts used on this
demonstration board, along with measured
performance
characteristics.
These
materials can be used as a reference design.
Specifications
Parameter
AC Input Voltage
Output Power
LED Current
LED Voltage
Power Factor
Efficiency
XYZ Dimension
ROHS Compliance
Value
100-265V
8.6W
120mA
72V
>0.97(Vin=120VAC )
>0.92(Vin=230VAC)
>88%
45x 24 x 13mm
Yes
Evaluation Board
Key Features




Non-Dimmable
Single winding inductor
High efficiency >88%
Non-isolate buck LED driver
Figure 1: Top View
Applications



Retrofit LED Lamps
High Voltage DC-DC LED Driver
General Purpose Constant Current
Source
AL1676EV1.Rev1
Nov 2015
www.diodes.com
Figure 2: Bottom View
Connection Instructions:
AC-L Input: White – Hot
AC-N Input: White – Neutral
DC LED+ Output: LED+ (Red)
DC LED- Output: LED- (Black)
Page 1 of 10
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
Board Layouts
Figure 3: PCB Layout Top View
Figure 4: PCB Layout Bottom View
Quick Start Guide
1.
2.
3.
4.
5.
6.
Preset the isolated AC source to 120VAC/230VAC.
Ensure that the AC source is switched OFF or disconnected.
Connect the anode wire of the LED string to the LED+ terminal of the evaluation board.
Connect the cathode wire of the LED string to the LED- terminal of the evaluation board.
Connect two AC line wires to the AC-L and AC-N terminals on the evaluation board.
Ensure that the area around the board is clear and safe, and preferably that the board and
LEDs are enclosed in a transparent safety cover.
7. Turn on the main switch. LED string should light up with LED.
DO NOT TOUCH THE BOARD, LEDs OR BARE WIRING.
Caution: The AL1676 is a non-isolated design. All terminals carry high voltage
during operation!
AL1676EV1.Rev1
Nov 2015
www.diodes.com
Page 2 of 10
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
Schematic
Figure 5: Schematic Circuit
Transformer Design
Bobbin and Core
EE10 Vertical 4+4 pin
Transformer Parameters
1. Primary Inductance (Pin2-Pin5, all other windings open):Lp=1.67mH, ±[email protected]
2. Primary Winding Turns (Pin2-Pin5): NP=257Ts
Transformer Winding Construction Diagram
2
WD1: Primary
0.15mm*1, 257Ts
5
Item
Winding name
Description
1
WD1-Primary
Winding
Start at Pin 2, Wind 257turns of Φ0.15mm wire
and finish on Pin 5
2
Insulation
2 Layers of insulation tape
AL1676EV1.Rev1
Nov 2015
www.diodes.com
Page 3 of 9
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
Bill of Material
No.
Item
1
C1
2
Description
Package
QTY
68nF/400V, CL21, Pitch=7.5mm
DIP
1
C2
150nF/400V, CL21, Pitch=7.5mm
DIP
1
3
C3
Ceramic Cap, 0.33uF/25V,X7R
0805
1
4
C4
Ceramic Cap, 1uF/25V,X7R
0805
1
5
C5
E-Cap, 130℃,100uF/100V,10*16mm
DIP
1
6
C6
NC
-
0
7
BD1
SOPA-4
1
8
D1
Fast Recovery Diode, RS1J, 1A/600V,Diodes Inc
SMA
1
9
VR1
Varistor, 07D431
DIP
1
10
RF1
Fuse Resistor,10R, 5%, 1W
DIP
1
11
R1
SMD Resistor,30K, 5%, 1/8W
0805
1
12
R2
SMD Resistor,180K, 5%, 1/4W
1206
1
13
R3
SMD Resistor,180K, 5%, 1/4W
1206
1
14
R4
SMD Resistor,3.0R, 1%, 1/8W
0805
1
15
R5
SMD Resistor,3.6R, 1%, 1/8W
0805
1
16
R6
SMD Resistor,47K, 5%, 1/8W
0805
1
17
R8
SMD Resistor,100K, 5%, 1/4W
1206
1
18
L1
Inductor 4.7mH, 6*8mm
DIP
1
19
T1
EE10, Vertical, 4+4 pin,Single Winding,1.67mH
DIP
1
20
U1
AL1676-10B, high PFC Buck IC, Diodes Inc
SOIC-7
1
21
PCB
Rectifier Bridge,HD06,0.8A/600V,Diodes Inc
FR4 Single layer, 45*24mm
Total
AL1676EV1.Rev1
Nov 2015
www.diodes.com
19
Page 4 of 9
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
Electrical Performance
Efficiency vs Input Voltage
ILED vs Input Voltage
92.0
124
91.5
123
91.0
122
90.5
121
89.5
120
89.0
119
88.5
118
ILED(mA)
Efficiency(%)
90.0
88.0
87.5
87.0
86.5
117
116
115
86.0
114
85.5
113
85.0
112
84.5
111
84.0
100
120
140
160
180
200
220
240
110
260
100
120
140
160
180
200
220
240
260
Input Voltage(V)
Input Voltage(V)
PF vs Input Voltage
THD vs Input Voltage
1.00
39
0.99
36
0.98
0.97
33
0.96
30
0.95
0.94
THD(%)
27
PF
0.93
0.92
0.91
0.90
24
21
0.89
18
0.88
15
0.87
12
0.86
0.85
100
120
140
160
180
200
Input Voltage(V)
AL1676EV1.Rev1
Nov 2015
www.diodes.com
220
240
260
9
100
120
140
160
180
200
220
240
Input Voltage(V)
Page 5 of 9
260
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
Functional Waveform
LED Current Ripple
(Vin=230VAC, Ripple=58mA)
IC VDRAIN Waveform
(Vin=265VAC, VDRAIN_MAX=400V)
LED Open Protection
(Vin=230VAC, Y-VCC, R-Drain, B-Vout,G-ILED)
AL1676EV1.Rev1
Nov 2015
www.diodes.com
Start-up Time
(Vin=100VAC, Start-up time=481mS)
Output Diode VR Waveform
(Vin=265VAC, VR_MAX=393V)
LED Short Protection
(Vin=230VAC,Y-VCC, R-Drain, B-Vout)
Page 6 of 9
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
Thermal Test
Top
(Vin=230VAC,Burn-in time=30min)
Bottom
(Vin=230VAC, Burn-in time=30min)
EMI Conduction Test
Line Terminal
(Vin=120VAC,Margin>14dB)
AL1676EV1.Rev1
Nov 2015
www.diodes.com
Neutral Terminal
(Vin=120VAC,Margin>14dB)
Page 7 of 10
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
Line Terminal
(Vin=230VAC,Margin>10dB)
AL1676EV1.Rev1
Nov 2015
www.diodes.com
Neutral Terminal
(Vin=230VAC,Margin>10dB)
Page 8 of 9
AL1676EV1 User Guide
100~265VAC Non-dimmable LED Driver
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Nov 2015
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