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TECHNICAL DATASHEET
Rev. G
XAIS3656
280W AC/DC High Efficiency Power Supply
207~294 VAC Input
28VDC Output at 10A
Small 3.5” x 5” x 2” Aluminum Case
FEATURES

92% Efficient at Full Load

ISO9001 Compliant

Active Power Factor Correction

UL 1029 R/C

Low THD

EN55022 Class A Emissions

Output Short Circuit and Over Current

EN 61000-4-5 Surge Immunity
Protection

EN 61000-3-2 Harmonic Currents
Conformal Coated

100% Burn-in

DESCRIPTION
The XAIS3656 AC/DC power supply provides 280 watts of output power and has an input voltage range of 207-294VAC
with a 28VDC single output. This supply is housed in a small 3.5” x 5” x 2” aluminum case and features 1600VAC I/O
isolation, high efficiency up to 92% at full load, and active power factor correction. This model also has over current and
short circuit protection and is 100% burned-in. The XAIS3656 series was designed to be used in the industrial or
commercial, indoor and outdoor lighting market. Some applications include lighting for parking lots, roadways, tunnels,
warehouses, walkways, billboards, and garages. It can also be used for entertainment lighting applications such as moving
heads, scanners, spot and wash lights, and digital projection.
04/06/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 1 of 7
WALL INDUSTRIES, INC.
Rev. G
TECHNICAL DATASHEET
XAIS3656
TECHNICAL SPECIFICATIONS
MODEL NO. XAIS3656
All specifications are based on 25°C, Nominal Input Voltage and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
Related condition
Min
Nom
Max
Specification
Switching Frequency
100
INPUT (Vin)
Operating Voltage Range
Frequency
No Load Input Power (Graph 3)
Power Factor (Graph 4)
Vin = 250 Vac; Io = 11 A
Total Harmonic Distortion (Graph 4)

Inrush Current
Vin = 294 Vac; cold start
Vin = 260 – 294 Vac; Io = 11A
Vin = 230 – 260 Vac; Io = 11A
Vin = 207 – 230 Vac; Io = 11A
EFFICIENCY (Graph 1)
OUTPUT (Vo)
Irms - I 1rms
 240Vac
Vin 
Irms
 240Vac
Unit
kHz
207
0.96
250
60
7
0.98
294
9
-
Vac
Hz
W
-
5.3
10
%
91.0
90.5
89.5
20
92.0
91.5
91.0
-
A
-
%
28.041
-1.4
28.447
28.856
+1.4
Vdc
%
Voltage Set Point
at 25 °C – see Temperature Drift for Set Point
at other Temperatures
Load Regulation (Graph 5)

Vo(Full Load) - Vo(Min. Load)
Vin  Nominal Line
Vo(Min. Load)
-
0.6
1.2
%
Line Regulation (Graph 6)

Vo( Low Line) - Vo(High Line)
Io  100% Load
Vo(Low Line)
-
0.1
0.2
%
Temperature Drift (Graph 7)

Vo(25C) - Vo(-40C or  85C)
Io  50% Load
Vo(25C)
-
0.01
0.02
% / °C
Ripple – Switching Frequency
Ripple – 60 Hz
Current
Current Limit (Graph 8)
Over Voltage Limit
20 MHz BW
20 MHz BW
Average
Total Power Limited
0
14
33.6
100
700
18
34.9
200
900
10.0
22
36.3
mVpk-pk
mVpk-pk
A
A
Vdc
-
1.2
0.5
700
-
2.0
1
1000
4
0
V
ms
ms
V
mS
1600
1600
1000
-
730
-
Vac
Vac
Vdc
µA
-40
-40
-40
25
25
-
75
75
85
°C
°C
°C
DYNAMIC RESPONSE
Load step  V
Recovery Time
Turn On Delay
Turn On Overshoot
Hold Up Time
ISOLATION
Input - Output
Input - Chassis
Output - Chassis
Leakage Current
THERMAL
Ambient Operating Temperature
Maximum Case Temperature
Storage Temperature
MTBF
25% to 75% Io, di/dt=0.25A/μS
Recovery to within 1% VO
Full Load Resistive
Vin = 294 Vac
Limited by Case Temperature
See Figure 1 for Thermal Measurement Point
MIL-HDBK-217F Notice 2;
Tamb=25°C; Io = 11A
MECHANICAL
Weight
04/06/2011
162,059
See Figure 1
1.19
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
hours
lbs
Page 2 of 7
WALL INDUSTRIES, INC.
Rev. G
TECHNICAL DATASHEET
XAIS3656
Figure 1: Mechanical Dimensions
Unit: inches [mm]
04/06/2011
Thermal Measurement Point
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 3 of 7
WALL INDUSTRIES, INC.
TECHNICAL DATASHEET
Rev. G
XAIS3656
DESIGN CONSIDERATIONS
Over Current Protection
The converter is protected from short circuit and over current conditions. Upon sensing a short circuit or an over current condition the
converter will immediately shut off, and after a short delay try to restart. This is called a ‘hiccup’ mode and this mode will persist until
the short circuit or over current condition is removed.
Over Temperature Protection
The converter is NOT protected from over temperature conditions. Exceeding the maximum rated case temperature may cause permanent
damage to the unit.
Fusing
The input to the converter is protected with a UL R/C fuse. This fuse is NOT user replaceable.
UL Recognition
UL R/C FNFT2.E330012 (Electric Discharge Lamp Control Equipment, Specialty – Component)
- UL Standard for Electric Discharge Lamp Control Equipment, Miscellaneous, UL 1029 and Electronic Ballasts UL 935.
UL R/C FNFT8.E330012 (Electric Discharge Lamp Control Equipment, Specialty Certified for Canada – Component)
- CSA Standard for Equipment for Use With Electric Discharge Lamps, C22.2, No. 74.
For use in permanently connected (fixed) equipment only within a Grounded Electrical Enclosure. Input wiring must use 18 AWG copper wire.
Emissions Accordance
- CFR Title 47 FCC Part 15 Subpart B, Class A
- ICES-003, Issue 4, Class A
- CNS 13438, Class A
- VCCI V-3/2005.04 and V-4/2003.04
- EN55022:2006+A1:2007, Class A
- ACMA AS/NZS CISPR22 2006, Class A
- EN 61000-3-2 Limits for Harmonic Current Emissions (Class C)
- EN61000-4-5 (1995-02) A1 (2001) 2 KV Line-Line, 4 KV Line-Neutral
Graph 1: Efficiency vs. Output Current
94%
92%
90%
88%
86%
290 Vac
260 Vac
230 Vac
210 Vac
Efficiency (%)
84%
82%
80%
78%
76%
74%
72%
70%
68%
66%
64%
0
1
2
3
4
5
6
7
8
9
10
11
Io (A)
04/06/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 4 of 7
WALL INDUSTRIES, INC.
TECHNICAL DATASHEET
Rev. G
XAIS3656
Graph 2: Efficiency vs. Temperature (Io=11A)
94%
93%
Efficiency (%)
92%
91%
90%
290 Vac
250 Vac
210 Vac
89%
88%
87%
86%
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
10
11
Case Temperature (°C)
Graph 3: Power Dissipation vs. Output Current
35
210 Vac
230 Vac
260 Vac
290 Vac
30
P diss (W)
25
20
15
10
5
0
0
1
2
3
4
5
6
7
8
9
Io (A)
Graph 4: Input Power Factor and THD
1.00
40
0.95
PF - 210 Vac
PF - 260 Vac
THD - 210 Vac
THD - 260 Vac
0.85
PF - 230 Vac
PF - 290 Vac
THD - 230 Vac
THD - 290 Vac
30
0.80
0.75
20
0.70
0.65
THD (%)
Power Factor
0.90
10
0.60
0.55
0.50
0
1
04/06/2011
2
3
4
5
6
I o (A)
7
8
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
9
10
11
Page 5 of 7
WALL INDUSTRIES, INC.
Rev. G
Graph 5: Load Regulation
XAIS3656
Graph 6: Line Regulation
0.20%
1.00%
0.80%
0.15%
0.60%
200 Vac
230 Vac
260 Vac
290 Vac
0.10%
Regulation (%)
0.40%
Regulation (%)
TECHNICAL DATASHEET
0.20%
0.00%
-0.20%
0.05%
0.00%
Io=0A
Io=2A
Io=5A
Io=8A
Io=11A
-0.05%
-0.40%
-0.10%
-0.60%
-0.15%
-0.80%
-1.00%
0
1
2
3
4
5
6
7
8
9
10
-0.20%
200
11
230
260
Io (A)
290
Vin (V)
Graph 8: Over Current vs. Temperature
Graph 7: Output Temperature Drift (Vin = 250 Vac; Io=11 A)
18
1.0%
0.8%
15
0.6%
0.4%
12
Iop (A)
%Vo
0.2%
0.0%
9
-0.2%
6
-0.4%
-0.6%
3
-0.8%
-1.0%
0
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
-40 -30 -20 -10
Tcase (°C)
04/06/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
0
10
20
30
40
50
60
70
80
Tcase (°C)
Page 6 of 7
WALL INDUSTRIES, INC.
Rev. G
TECHNICAL DATASHEET
XAIS3656
COMPANY INFORMATION
Wall Industries, Inc. has created custom and modified units for over 50 years. Our in-house research and development
engineers will provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2008
certification is just one example of our commitment to producing a high quality, well documented product for our customers.
Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working
closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to
provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss
your future projects.
Contact Wall Industries for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
04/06/2011
(603)778-2300
 (888)587-9255
 (603)778-9797
[email protected]
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 7 of 7