EWR1601-0 POWER ONE, EWR1601-0 Datasheet - Page 7

• Manufacturer Part Number: EWR1601-0
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of EWR1601-0

• Output Current: 5A
• Input Voltage: 110V
• Number Of Outputs: 1
• Mounting Style: Din-Rail
• Lead Free Status / Rohs Status: Not Compliant

Output Power Derating
The output power of LW models must be decreased at low
input voltage and/or powertrain temperature above 125 °C.
The powertrain temperature depends on the output power, the
input voltage, and the cooling method. At low input voltage the
losses increase. At the maximum specified environment
temperature T
approaching maximum ambient conditions. As a result, the
output power has to be reduced according to the tables below.
Input Fuse and Protection
A fast-blow fuse ( Schurter F 6.3 A, 5
sleeve, is connected to the input L or Vi+. EW models have a
smaller fuse (250 V, 4
recognized E-39265). For DC input voltages above 250 V
consult the Installation Instructions.
Converters with option F have 2 small fuses, one in each input
line. Converters with option EF (E and F) have 2 large fuses
( F6.3 A, 5
option F is limited to 250 V.
A VDR and a symmetrical input filter form an effective
protection against input transients.
An under- and an overvoltage lockout protect the converter,
which is disabled below V
generated inhibit signal.
The built-in bridge rectifier (LW models) provides reverse
polarity protection at the input if operated from DC.
EW models are protected by the (blowing) input fuse in
connection with the body diode of the main transistor. Option Q
offers a serial diode, but this reduces the efficiency by approx.
1%.
BCD20020-G Rev AB1, 17-Nov-09
Table 5a: P
Table 5b: P
Model
LWR1601-6E
LWN1601/2660-6E
LWR1701-6E
LWN1701-6E
LWR1801-6E
LWN1801/2880-6E
Model
LWR1601-6E
LWN1601/2660-6E
LWR1801-6E
LWN1801/2880-6E
o
o
20 mm). The DC input voltage for converters with
derating according to UL 60950 at T
derating according to UL 60950 at T
A
free air convection cooling might be insufficient
®
i min
9 mm, SOC NT3 6.3A V009, UL-
and above V
P
P
124
247
122
244
124
247
124
247
124
247
o nom
[W]
o nom
[W]
20 mm), protected by a
i max
by an internally
125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
A
A
= 60 °C, or according to UL 508 at T
= 50 °C, or according to UL 508 at T
T
T
[°C]
[°C]
C max
C max
80
89
80
90
80
89
76
86
76
86
Page 7 of 25
EW models have no derating.
Efficiency
Fig. 3
Efficiency versus load (LWN2660-6)
Note: The measurements have been made by the approval
boards with free air convection cooling according to UL 60950
specified ambient temperature T
cardboard box according to UL 508 and a specified temperature
outside the box T
T
Mechanical Data). For models not specified, please contact
Power-One.
out
V
V
i
i
and the case temperature T
[VAC]
108
125
125
125
125
[VAC]
105
115
98
98
93
90
80
70
60
50
40
30
20
10
0
0
Derate below
Derate below
out
0.2
i
. The tables give a correlation between T
= 125 VAC
out
out
= 50 °C
= 40 °C
0.4
no derating
no derating
V
V
i
i
[VDC]
[VDC]
105
115
115
115
115
98
93
95
W Series Data Sheet
A
and with the converter built in a
0.6
C
(measuring point T
0.8
i
www.power-one.com
= 230 VAC
04071
derate by
derate by
1
[W/V]
– 0.67
[W/V]
–0.67
–1.25
–1.25
–1.25
–1.25
–0.67
–1.25
–0.67
–1.25
o nom
o
C
A
see
or