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WDD20 SERIES
SINGLE & DUAL OUTPUT
Characteristics
Conditions
min.
typ.
max.
unit
Switching frequency
Isolation voltage
Isolation resistance
Ambient temperature
Vi nom, Io nom
Input / Output
Input / Output, @ 500VDC
K H z
1,500
VDC
M
100
180
48
Characteristics
Conditions
min.
typ.
max.
unit
Input voltage range
9
18
48
36
72
VDC
VDC
Ta min ... Ta max, Io nom
24
Case temperature
Operating at Vi nom, Io nom
o
C
Storage temperature
M.T.B.F.
Non operational
According to MIL-HDBK-217F, GF40
-40
+ 100
+ 100
277,000
o
C
Derating
o
% / C
-25
o
C
+ 60
-25
Dimension
L40.6 x W50.8 x H10.2
Hrs
Cooling
Free air convection
Case material
Metal
mm
GENERAL
o
C
See derating curve
No load input current
24V models
48V models
mA
mA
Vi nom, Io = 0
Input voltage w/o damage
40
VDC
VDC
Io nom
75
20
15
Characteristics
Conditions
min.
unit
Output voltage accuracy
Vi nom, Io nom
typ.
max.
2
%
2
%
Minimum load
Line regulation
Io nom, Vi min ...Vi max
Vi nom
0
10
%
%
%
Load regulation
o
% / C
Temperature coefficient
Transient recovery time
Vi nom, Io 0 ... Io nom, single output models
Vi nom, Io nom
500
0.02
%
%
S
1
%
single output models
dual output models (each output)
Vi nom, Io min ... Io nom, dual output models
Vi nom, Io nom,
BW = 20MHz
Ripple & noise
Vi nom, Io 0 ...1/2 Io nom
2
5
Voltage trim range
Vi nom
10
%
%
Efficiency
Up to 89%, See model list
Vi nom, Io nom, Po / Pi
OUTPUT SPECIFICATIONS
mV
3.3V output models
12V, 15V & dual
3.3V & 5V output models
5
100
150
mV
+ 71
Startup voltage
Io nom
8.5
VDC
VDC
VDC
15
33
Input filter
Pi type
12V models
24V models
48V models
12V models
12V models
24V models
48V models
36
12
18
VDC
20
10
VDC
mA
INPUT SPECIFICATIONS
o
All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed
SPECIFICATION
Vi nom
5V, 12V, 15V & dual
Vi nom,
Io nom
3.3V & 5V output models
12V, 15V & dual output models
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PIN NO.
SINGLE
Vi+
Vi -
2
4
7
8
6
DUAL
Vi+
Vi -
S. D.
com
GENERAL
Trim
5
1
Vo +
NO PIN
Vo -
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WDD20 SERIES
SINGLE & DUAL OUTPUT
MECHANISM & PIN CONFIGURATION
PHYSICAL CHARACTERISTICS
CASE SIZE
CASE MATERIAL
WEIGHT
40.6 x 50.8 x 10.2 mm 1.6 x 2 x 0.4 inches
Metal
60 g
PIN ASSIGNMENT
DERATING
mm [inch]
Input reversed
Shunt diode built in, external fuse recommended
Output short circuit
Continuous
Remote ON / OFF
ON: opened or 8 ~ 10VDC applied, reference to input GND
OFF: -0.3 ~ 2VDC applied, reference to input GND
CONTROL AND PROTECTION
50.80 [2.00]
10.16 [0.4]
DIA 1.00 [0.04]
5.00 [0.20]
BOTTOM VIEW
1
2
17.78 [0.70]
5.08 [0.20]
7.62 [0.30]
45.72 [1.80]
10.16 [0.40]
10.16 [0.40]
2.54 [0.10]
4
5
6
7
8
10.16 [0.40]
5.08 [0.20]
10.16 [0.40]
4
0
.
6
4
[
1
.
6
0
]
S. D.
Vo +
Vo -
Trim
NATURAL
CONVECTION
COOLING
0
100
o
Ambient Temperature [ C ]
60
100
-25
P
o
w
e
r
o
u
t
[
%
]
71
12V, 15V & dual
3.3V & 5V
S.D. : REMOTE ON / OFF
o
All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed
SPECIFICATION
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