FLEX SERIES
270 Watts
AC/DC Desktop Power Supplies
Single Output
Rev G
FEATURES
• 92% Efficient at Full Load
• 270 Watts Output Power
• No Internal Fan
• Low Total Harmonic Distortion
(THD)
• 7.15” x 4.00” x 2.92”
Aluminum/Plastic Case
• Fixed Switching Frequency
• ISO9001 Compliant
• IEC-320-C14 AC Inlet
• Single Outputs from 12V to 48VDC Quasi
Regulated (See Note 1)
• EN60950 pending
• Active Power Factor Correction
• Short Circuit, Over Current, and Over Temp.
Protection
• Universal Input Voltage Range: 100~240VAC
• 100% Burn-in
• EN55022 Class B Emissions
• EN61000-4-5 Surge Immunity
• EN61000-3-2 Harmonic Currents
• Patent Pending
DESCRIPTION
The FLEX series of AC/DC power supplies provides 270 Watts of output power in a 7.15”
x 4.00” x 2.92” desktop style package with no internal fan. This series consists of single
output models ranging from 12VDC to 48VDC with a universal input voltage range of 100-
240VAC and an IEC-320-C14 AC inlet. Some features include active PFC, fixed switching
frequency, and low THD. These supplies are protected against over current, short circuit,
and over temperature conditions. All models have been 100% burn-in tested.
Size: 7.15in x 4.00in x 2.92in
MODEL SELECTION TABLE
Model Number
Input Voltage Range
Output Voltage
Output Current
Ripple & Noise
Output Power
12VDC
15VDC
18VDC
24VDC
28VDC
48VDC
22.5A
18A
270W
270W
270W
270W
270W
270W
FLEX12S-270
FLEX15S-270
FLEX18S-270
FLEX24S-270
FLEX28S-270
FLEX48S-270
15A
115/230VAC
(100~240VAC)
1000mVp-p Max.
11.25A
9.64A
5.625A
SPECIFICATIONS
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.
SPECIFICATION
INPUT SPECIFICATIONS
Operating Voltage Range
TEST CONDITIONS
Min
Typ
Max
240
Unit
100
115/220
VAC
Hz
Frequency
60
5
No Load Input Power (Graph 2)
Power Factor
Vin=115VAC
7
W
Vin=115VAC; Io=11A
Vin=135VAC; Cold Start
0.96
0.98
47
Inrush Current
A
OUTPUT SPECIFICATIONS
Output Voltage
See Table
V
o
(Low Line) -V
(Low Line)
(Full Load) -V (Min. Load)
(Min.Load)
o(High Line)
=
=
=
I = 100% Load
o
Line Regulation (Graph 4)
0.05
0.2
8.5
%
%
V
o
V
o
o
Load Regulation (Graph 3)
(Dependent on Cable Length)
Vin = Nominal Line
V
o
Vo
(25°C) -V
o
(-40°C or + 85°C)
Io = 50% Load
Temperature Drift (Graph 5)
0.01
700
0.02
%/ºC
Vo(25°C)
Ripple-60Hz & Switching
20MHz BW
1000
mV
pk-pk
Current
Current Limit
Over Voltage Limit
Average/Peak Current
Total Power Limited
0
110
115
Iout
140
125
Apeak
%
%
Wall Industries, Inc. • Tel: 603-778-2300 • Toll Free: 888-597-9255 •
website: www.wallindustries.com • e-mail: sales@wallindustries.com
7/8/2019
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