CHINFA WDD20-15D3

WDD20 SERIES
DC - DC CONVERTER
15 ~ 20W SINGLE & DUAL OUTPUT
FEATURES
O/n o ff
‧EFFICIENCY UP TO 89%
‧2:1 WIDE INPUT RANGE
‧I/O ISOLATION
‧INPUT Pi FILTER
‧SHORT CIRCUIT PROTECTION
‧HIGH PERFORMANCE
‧2 YEARS WARRANTY
MODEL LIST
INPUT
EFF. CAPACITOR
INPUT CURRENT OUTPUT OUTPUT OUTPUT EFF.
LOAD
MODEL NO.
VOLTAGE
WATTAGE VOLTAGE CURRENT (min.) (typ.) (max.)
(typ.)
Single Output Models
+3.3 VDC
4500 mA
77%
80%
7000 μF
20 WATTS
+ 5 VDC
4000 mA
81%
83%
7000 μF
20 WATTS
+ 12 VDC
1670 mA
84%
86%
1000 μF
1.95 A
20 WATTS
+ 15 VDC
1330 mA
85%
87%
470 μF
18~36 VDC
0.78 A
15 WATTS
+3.3 VDC
4500 mA
78%
80%
7000 μF
WDD20 - 05S2
18~36 VDC
1.0 A
20 WATTS
+ 5 VDC
4000 mA
83%
85%
7000 μF
WDD20 - 12S2
18~36 VDC
1.0 A
20 WATTS
+ 12 VDC
1670 mA
84%
86%
1000 μF
WDD20 - 15S2
18~36 VDC
0.96 A
20 WATTS
+ 15 VDC
1330 mA
86%
88%
470 μF
WDD20 - 03S3
36~72 VDC
0.39 A
15 WATTS
+3.3 VDC
4500 mA
78%
80%
7000 μF
WDD20 - 05S3
36~72 VDC
0.5 A
20 WATTS
+ 5 VDC
4000 mA
83%
85%
7000 μF
WDD20 - 12S3
36~72 VDC
0.49 A
20 WATTS
+ 12 VDC
1670 mA
85%
87%
1000 μF
WDD20 - 15S3
36~72 VDC
0.48 A
20 WATTS
+ 15 VDC
1330 mA
86%
88%
470 μF
± 830 mA
83%
85%
± 470 μF
87%
± 470 μF
WDD20 - 03S1
9~18 VDC
1.6 A
15 WATTS
WDD20 - 05S1
9~18 VDC
2.0 A
WDD20 - 12S1
9~18 VDC
2.0 A
WDD20 - 15S1
9~18 VDC
WDD20 - 03S2
Dual Output Models
WDD20 - 12D1
9~18 VDC
2.0 A
20 WATTS
WDD20 - 15D1
9~18 VDC
1.95 A
20 WATTS
± 15 VDC
± 670 mA
85%
WDD20 - 12D2
18~36 VDC
0.97 A
20 WATTS
± 12 VDC
± 830 mA
85%
87%
± 470 μF
WDD20 - 15D2
18~36 VDC
0.96 A
20 WATTS
± 15 VDC
± 670 mA
86%
88%
± 470 μF
WDD20 - 12D3
36~72 VDC
0.48 A
20 WATTS
± 12 VDC
± 830 mA
85%
87%
± 470 μF
WDD20 - 15D3
36~72 VDC
0.48 A
20 WATTS
± 15 VDC
± 670 mA
87%
89%
± 470 μF
± 12 VDC
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
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2010.02.09
100KHz / 1V
min.
typ.
max.
180
unit
KHz
1500
VDC
MΩ
100
1000
PF
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P1
WDD20 SERIES
SINGLE & DUAL OUTPUT
SPECIFICATION
o
All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed
GENERAL
Characteristics
Ambient temperature
Conditions
Vi nom,
Io nom
-25
12V, 15V & dual output models
-25
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.
3.3V & 5V output models
+ 61
+ 71
unit
o
C
o
C
+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
950000
Free air convection
INPUT SPECIFICATIONS
Characteristics
Input voltage range
Input voltage w/o damage
Vi nom, Io=0
Io nom
typ.
9
unit
18
VDC
18
12
24
36
VDC
36
48
72
VDC
12V models
20
mA
24V models
15
mA
48V models
10
mA
12V models
20
VDC
24V models
40
75
VDC
Ta min ...Ta max, Io nom
No load input current
min.
max.
Conditions
48V models
Startup voltage
Io nom
VDC
12V models
8.5
VDC
24V models
16
VDC
48V models
33
VDC
Pi type
Input filter
OUTPUT SPECIFICATIONS
Characteristics
Conditions
Output voltage accuracy
Vi nom, Io nom
Minimum load
Vi nom
single output models
dual output models (each output)
Line regulation
min.
typ.
max.
unit
±2
%
0
%
10
%
Io nom, Vi min ...Vi max
Vi nom, Io 0 ... Io nom, single output models
Load regulation
Vi nom, Io min ... Io nom, dual output models
Cross regulation (Dual model)
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
%
±2
±5
%
±5
30
%
ms
%
500
μs
3.3V & 5V models
100
mV
12V, 15V & dual
3.3V model
150
mV
5V, 12V, 15V & dual
Efficiency
±1
Vi nom, Io nom, Po / Pi
± 5
%
%
±10
Up to 89%, 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 (12Vin : 3A, 24Vin : 1.5A, 48Vin : 1A)
Output short circuit
Current limited (Auto-recovery)
Rated over load protection
110%min....140%max
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2010.02.09
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P2
WDD20 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
Patting material
Epoxy
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]
30.00[1.18] - 120.00[4.72]
±0.50[0.02]
7
10.16 [0.40]
4
GENERAL TOLERANCE
±0.30[0.01]
10.16 [0.40]
2
10.16 [0.40]
DIA 1.00 [0.04]
0.00[0.00] - 30.00[1.18]
6
1
5.08 [0.20]
40.64 [1.60]
10.16 [0.40]
17.78 [0.70]
8
50.80 [2.00]
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 WDD20 series with dual output
‧Block diagram for WDD20 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 +
WDD20
Vin -
Vo -
C3
‧The commponents used in the above figure, together with the
manufacturer part numbers for these components, are as follows.
C1
C2
C3
L1
WDD20-XXX1
3.3μF / 50V
MLCC
3.3μF / 50V
MLCC
InF / 2KV
MLCC
1.5mH
Common
Choke
WDD20-XXX2
1μF / 50V
MLCC
1μF / 50V
MLCC
InF / 2KV
MLCC
1.5mH
Common
Choke
InF / 2KV
MLCC
3.5mH
Common
Choke
WDD20-XXX3
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2010.02.09
3.3μF / 100V 3.3μF / 100V
MLCC
MLCC
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P3
WDD20 SERIES
SINGLE & DUAL OUTPUT
DERATING AND EFFICIENCY CURVE
Temperature derating curve
100
Power out [ % ]
12V, 15V & dual
NATURAL
CONVECTION
COOLING
0
-25
3.3V & 5V
61
71
Ambient Temperature [ oC ]
100
88
90
87
85
Efficiency [ % ]
Efficiency [ % ]
Efficiency Vs Input Voltage
WDD20-05S2
86
85
84
20
22
24
26
28
30
32
34
80
75
70
65
Io : Full Load
83
18
Efficiency Vs Output Load
WDD20-05S2
Vi : 24VDC
60
36
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
WDD20-03SX
Type
Rext 1
Vo nom -2.5%
1KΩ
Vo nom -5%
Rext 2
Vo nom -5%
0Ω
Vo nom +2.5%
10KΩ
Vo nom +5%
4.7KΩ
Vo nom -10%
Vo nom +5%
Vo nom +10%
WDD20-05SX
4.7KΩ
100Ω
4.7KΩ
470Ω
WDD20-12SX
30KΩ
20KΩ
10KΩ
2KΩ
WDD20-15SX
150KΩ
56KΩ
15KΩ
3KΩ
WDD20-12DX
120KΩ
56KΩ
12KΩ
2KΩ
WDD20-15DX
180KΩ
75KΩ
10KΩ
1.2KΩ
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2010.02.09
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P4