NFS25 Series
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Dual and triple output
25W AC/DC Universal Input Switch Mode Power Supplies
1
LOW TO MEDIUM POWER AC/DC POWER SUPPLIES
5.0 x 3.0 x 1.2 inch package (1U applications)
Industry standard package
Overvoltage and short circuit protection
25W with free air convection cooling
EN55022, EN55011 conducted emissions level A
UL, VDE and CSA safety approvals
The NFS25 series is a 25W universal input AC/DC power supply on a 5 x 3 inch card
with a maximum component height of 1.2 inches for use in 1U applications. The NFS25
series is available with a wide range of models in the industry standard 5 x 3 inch
footprint and has proven itself to be reliable and versatile product for a wide range of
communication and industrial applications. The NFS25 provides 25W of output power
with free air convection cooling which can be boosted to 30W with 20CFM of air.
Standard features include OVP and short circuit protection. The series, with full
international safety approval and the CE mark, meets conducted emissions EN55022
level A. The NFS25 series is designed for use in low power data networking, computer,
telecom and industrial applications such as wireless switchers, hubs, POS terminals,
PABX’s and machine control. This list is not exclusive as the generic feature of the
series with industry standard output configurations provide a solution for most high
volume applications including many industrial applications.
2 YEAR WARRANTY
All specifications are typical at nominal input, full load at 25°C unless otherwise stated
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Output power
(See Note 2)
Line regulation
LL to HL, FL
Total regulation
(See Notes 4, 5)
Overshoot/undershoot
Transient response
Temperature coefficient
Overvoltage protection
Output power limit
Short circuit protection
INPUT SPECIFICATIONS
Input voltage range
Input frequency range
Input surge current
Safety ground
leakage current
110VAC, cold start
230VAC, cold start
132VAC, 60Hz
264VAC, 50Hz
Universal input
85 to 264VAC
120 to 370VDC
47 to 440Hz
15A max.
32A max.
0.62mA max.
1mA max.
Continuous
Peak (60s)
Main output (Output 1)
Output 2
Output 3
Main output (Output 1)
Auxiliary output 2
Auxiliary output 3
At turn-on
+5V
(1.5 to 3A step)
All outputs
+5V output
Primary power
limited
25W
35W
±0.2% max.
±1% max.
±0.2% max.
±2.0% max.
see table
see table
0%
±120mV max. dev.
500µs recovery
±0.02%/°C max.
6.25V ±0.75V
60W Pin limit max.
35W Pout limit min.
Continuous
EMC CHARACTERISTICS
Conducted emissions
Radiated emissions
ESD air
ESD contact
Surge
Fast transients
Radiated immunity
Conducted immunity
EN55022, FCC part 15
EN55022, FCC part 15
EN61000-4-2, level 3
EN61000-4-2, level 4
EN61000-4-5, level 3
EN61000-4-4, level 3
EN61000-4-3, level 3
EN61000-4-6, level 3
Level A
Level A
criteria 1
criteria 1
criteria 1
criteria 1
criteria 2
criteria 1
Perf.
Perf.
Perf.
Perf.
Perf.
Perf.
GENERAL SPECIFICATIONS
Hold-up time
Efficiency
Isolation voltage
Switching frequency
Approvals and
standards
(See Note 10)
Weight
MTBF (See Note 9)
MIL-HDBK-217E, 25°C
110VAC input
230VAC input
25W output
Input/output
Input/chassis
16ms
80ms
70% typical
3000VAC
1500VAC
Variable
IEC950, IEC1010, EN60950
UL1950, VDE0805
CSA C22.2 No. 950
280g (9.6oz)
170,000 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
(See Notes 6, 7, 8)
0°C to 50°C ambient,
25W max.
convection cooled
50°C to +70°C ambient
Derate to
convection cooled
50% load
Peak (0°C to +50°C,
35W
max. 60 seconds)
Non-operating
–40°C to +85°C
Non-condensing
Operating
Non-operating
5% to 95% RH
10,000 feet max.
30,000 feet max.
Relative humidity
Altitude
Vibration
Random vibration
2.4G rms approx.
Three orthogonal axes
5Hz to 500Hz
10 min. test per axis
File Name: NFS25.PDF Rev: 01 Jan 2000
ARTESYN [ ARTESYN TECHNOLOGIES ]
