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WDD15U SERIES
DC - DC CONVERTER
15W SINGLE & DUAL OUTPUT
FEATURES
‧EFFICIENCY UP TO 84%
‧4:1 WIDE INPUT RANGE
‧I/O ISOLATION
‧INPUT Pi FILTER
‧SHORT CIRCUIT PROTECTION
‧HIGH PERFORMANCE
‧3 YEARS WARRANTY
R
H a
UL 60950-1
EN 60950-1
MODEL LIST
MODEL NO.
INPUT
EFF.
EFF. CAPACITOR
INPUT
CURRENT OUTPUT OUTPUT OUTPUT
LOAD
VOLTAGE (typ.) (max.) WATTAGE VOLTAGE CURRENT (min.) (typ.) (max.)
Single Output Models
WDD15 - 03S4U
9~36 VDC
0.79 A
2.2 A
15 WATTS
+3.3 VDC
4500 mA
77%
79%
7000 μF
WDD15 - 05S4U
9~36 VDC
0.79 A
2.2 A
15 WATTS
+ 5 VDC
3000 mA
78%
80%
7000 μF
WDD15 - 12S4U
9~36 VDC
0.77 A
2.2 A
15 WATTS
+ 12 VDC
1250mA
80%
82%
470μF
WDD15 - 15S4U
9~36 VDC
0.76 A
2.2 A
15 WATTS
+ 15 VDC
1000 mA
81%
83%
220μF
WDD15 - 03S5U
18~75 VDC
0.39 A
1.1 A
15 WATTS
+3.3 VDC
4500 mA
77%
79%
7000 μF
WDD15 - 05S5U
18~75 VDC
0.39 A
1.1 A
15 WATTS
+ 5 VDC
3000 mA
79%
81%
7000 μF
WDD15 - 12S5U
18~75 VDC
0.38 A
1.1 A
15 WATTS
+ 12 VDC
1250 mA
82%
84%
470μF
WDD15 - 15S5U
18~75 VDC
0.38 A
1.1 A
15 WATTS
+ 15 VDC
1000 mA
82%
84%
220μF
Dual Output Models
WDD15 - 05D4U
9~36 VDC
0.79 A
2.2 A
15 WATTS
± 5 VDC
± 1500 mA
78%
80%
±470μF
WDD15 - 12D4U
9~36 VDC
0.77 A
2.2 A
15 WATTS
± 12 VDC
± 630 mA
81%
83%
±100μF
WDD15 - 15D4U
9~36 VDC
0.75 A
2.2 A
15 WATTS
± 15 VDC
± 500 mA
82%
84%
±100μF
WDD15 - 05D5U
18~75 VDC
0.39 A
1.1 A
15 WATTS
± 5 VDC
± 1500 mA
80%
82%
±470μF
WDD15 - 12D5U
18~75 VDC
0.38 A
1.1 A
15 WATTS
± 12 VDC
± 630 mA
82%
84%
±100μF
WDD15 - 15D5U
18~75 VDC
0.38 A
1.1 A
15 WATTS
± 15 VDC
± 500 mA
82%
84%
±100μF
SPECIFICATION
o
All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed
GENERAL
Characteristics
Conditions
Switching frequency
Isolation voltage
Vi nom, Io nom
Input - Output
Isolation resistance
Isolation capacitance
Input - Output, @ 500VDC
Ambient temperature
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100KHz / 1V
Vi nom,
Io nom
min.
typ.
max.
250
KHz
1,500
VDC
MΩ
100
3.3V & 5V output models
-40
12V, 15V & dual output models
-40
unit
1,000
PF
+ 61
+ 71
o
C
o
C
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WDD15U SERIES
SINGLE & DUAL OUTPUT
SPECIFICATION
o
All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed
GENERAL
Characteristics
Conditions
Case temperature
Operating at Vi nom, Io nom
Derating
Vi nom
Non operational
Vi nom, Io nom
Storage temperature
Relative humidity
Temperature coefficient
typ.
min.
unit
+100
o
-40
+100
o
20
95
C
See derating curve
Vi nom, Io min
± 0.02
L50.8 x W40.64 x H10.16
Dimension
Be1lcore issue [email protected] oC, GB
MTBF
Cooling
max.
C
% RH
% / oC
mm
Hours
1,350,000
Free air convection
INPUT SPECIFICATIONS
Characteristics
Input voltage range
min.
typ.
max.
unit
9
24
48
36
VDC
75
VDC
24V
20
mA
48V
15
mA
24V
40
80
VDC
Conditions
Ta min ...Ta max, Io nom
18
No load input current
Vi nom, Io=0
Input voltage w/o damage
Io nom
Startup voltage
Io nom
48V
VDC
24V
8.5
VDC
48V
16
VDC
Pi type
Input filter
OUTPUT SPECIFICATIONS
Characteristics
Conditions
Output voltage accuracy
Vi nom, Io nom
Minimum load
Vi nom
Line regulation
min.
single output models
0
dual output models (each output)
10
typ.
Aymmetrical load 10% - 100% FL
Startup time
Transient recovery time
Vi nom, Io nom
Ripple & noise
Voltage trim range
1)
Vi nom, 1~0.5 Io nom
Vi nom, Io nom,
BW = 20MHz
Vi nom
%
±1
%
±2
±5
%
±5
30
%
ms
%
500
3.3V & 5V
100
mV
12V, 15V & dual
3.3V
150
mV
5V, 12V, 15V & dual
Efficiency
±2
%
Vi nom, Io min ... Io nom, dual output models
Cross regulation (Dual model)
unit
%
Io nom, Vi min ...Vi max
Vi nom, Io 0 ... Io nom, single output models
Load regulation
max.
Vi nom, Io nom, Po / Pi
%
± 5
%
±10
Up to 84%, See model list and efficiency curve
NOTE 1 : Pls refer to Fig 1 & Table 1 for connection and resistance recommended.
CONTROL AND PROTECTION
Remote ON / OFF
ON : opened or 8 ~ 10VDC applied, reference to input GND
OFF : -0.3 ~ 2VDC applied, reference to input GND
Input reversed
Shunt diode built in, external fuse recommended (24Vin : 2.5A, 48Vin : 1.25A)
Output short circuit
Current limited (Auto-recovery)
Rated over load protection
110%min....140%max
APPROVALS
APPROVALSAND
ANDSTANDARD
STANDARD
UL/cUL
UL 60950-1 Recognized
TUV
EN 60950-1
CE
EN 61204-3, EN 55022, Class A, EN 61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-6
meet IEC 60068-2-6 (10-500 Hz, 2G, along X, Y, Z each Axis, 60 min for each Axis)
Vibration
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WDD15U SERIES
SINGLE & DUAL OUTPUT
PHYSICAL CHARACTERISTICS
Case size
50.8 x 40.64 x 10.16 mm (2 x 1.6 x 0.4 inches)
Case material
Plastic base / Metal case
Weight
60 g
Potting material
Silicone
MECHANISM & PIN CONFIGURATION
mm [inch]
2.54 [0.10]
45.72 [1.80]
5.08 [0.20]
5
10.16 [0.4]
6.00 [0.24]
6
1
5.08 [0.20]
10.16 [0.40]
2
7
10.16 [0.40]
DIA 1.00 [0.04]
40.64 [1.60]
10.16 [0.40]
17.78 [0.70]
10.16 [0.40]
4
8
GENERAL TOLERANCE
0.00[0.00] - 30.00[1.18]
30.00[1.18] - 120.00[4.72]
±0.30[0.01]
50.80 [2.00]
±0.50[0.02]
BOTTOM VIEW
PIN ASSIGNMENT
GENERAL
PIN NO.
1
2
4
5
6
7
8
SINGLE
Vi+
Vi -
ON / OFF
NO PIN
Vo +
Vo -
Trim
DUAL
Vi+
Vi -
ON / OFF
Vo +
com
Vo -
Trim
CIRCUIT SCHEMATIC
‧Block diagram for WDD15U series with dual output
‧Block diagram for WDD15U series with single output
Vo +
Vi +
Vo +
Vi +
Rectifier
Switching
Device
com
Switching
Device
Rectifier
Rectifier
Vo -
Vi -
PWM
Controller
Opto Isolation
Reference &
Error Amp.
PWM
Controller
Trim
ON / OFF
Vo -
Vi -
Opto Isolation
Reference &
Error Amp.
Trim
ON / OFF
RECOMMENDED CIRCUIT
‧Recommended filter for EN55022 Class B compliance
‧Recommended EN 55022 Class B filter circuit layout.
L1
+
Vin +
C1
C2
Vo +
WDD15U
Vin -
Vo -
C3
‧The components used in the above figure, together with the manufacturer
part numbers for these components, are as follows.
WDD15-XXX4U
WDD15-XXX5U
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C1
C2
C3
1μF / 50V
MLCC
1μF / 50V
MLCC
InF / 2KV
MLCC
3.3μF / 100V 3.3μF / 100V
MLCC
MLCC
InF / 2KV
MLCC
L1
1.5mH
Common
Choke
3.5mH
Common
Choke
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WDD15U SERIES
SINGLE & DUAL OUTPUT
DERATING AND EFFICIENCY CURVE
Temperature derating curve
100
Power out [ % ]
12V, 15V & dual
Safe Operating Area
3.3V & 5V
0
-40
61
71
Ambient Temperature [ oC ]
100
82
90
81
85
Efficiency [ % ]
Efficiency [ % ]
Efficiency Vs Input Voltage
WDD15-05S4U
80
79
78
20
22
24
26
28
30
32
34
80
75
70
65
Io : Full Load
77
18
Efficiency Vs Output Load
WDD15-05S4U
60
36
Vi : 24VDC
10
20
30
40
Input Voltage (V)
50
60
70
80
90
100
Output Load (%)
Fig. 1 Trim connection
( For Single output )
6
7
8
( For Dual output )
Vo +
Rext 1
Vo -
Trim
6
7
8
Vo +
Vo Rext 2
5
Vo +
5
Vo +
6
com
6
com
7
Vo -
7
Vo -
8
Trim
8
Trim
Rext 1
Rext 2
Trim
Table 1 Typical resistor values for various output voltage adjustment settings
Type
Rext 1
Vo nom -2.5%
Rext 2
Vo nom -5%
Vo nom +2.5%
Vo nom +5%
WDD15-03SXU
680Ω
470Ω
8.2KΩ
3.75KΩ
Type
Vo nom -5%
Vo nom -10%
Vo nom +5%
Vo nom +10%
WDD15-05SXU
4.7KΩ
0Ω
4.7KΩ
390Ω
WDD15-12SXU
43KΩ
12KΩ
5.1KΩ
180Ω
WDD15-15SXU
130KΩ
51KΩ
10KΩ
820Ω
WDD15-05DXU
27KΩ
10KΩ
5.6KΩ
0Ω
WDD15-12DXU
100KΩ
47KΩ
8.66KΩ
680Ω
WDD15-15DXU
270KΩ
120KΩ
18KΩ
2.7KΩ
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