WDD20 SERIES
DC-DC CONVERTER
15 ~ 20W
WDD20 – 03 S 1
WATTAGE
03
05
12
15
: 3.3V OUT
:
5V OUT
:
12V OUT
:
15V OUT
1: 9~18V IN
2: 18~36V IN
3: 36~72V IN
S : SINGLE OUTPUT
D : DUAL OUTPUT
MODEL LIST
MODEL NO.
INPUT
VOLTAGE
9~18
9~18
9~18
9~18
18~36
18~36
18~36
18~36
36~72
36~72
36~72
36~72
9~18
9~18
18~36
18~36
36~72
36~72
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
OUTPUT
WATTAGE
OUTPUT
VOLTAGE
OUTPUT
CURRENT
4500
4000
1670
1330
4500
4000
1670
1330
4500
4000
1670
1330
±
±
±
±
±
±
830
670
830
670
830
670
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Single Output Models
15 WATTS
+3.3 VDC
+ 5 VDC
20 WATTS
+ 12 VDC
20 WATTS
+ 15 VDC
20 WATTS
+3.3 VDC
15 WATTS
+ 5 VDC
20 WATTS
+ 12 VDC
20 WATTS
+ 15 VDC
20 WATTS
+3.3 VDC
15 WATTS
+ 5 VDC
20 WATTS
+ 12 VDC
20 WATTS
+ 15 VDC
20 WATTS
Dual Output Models
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
*
*
*
*
*
*
*
-
-
-
-
-
-
12D1
15D1
12D2
15D2
12D3
15D3
20
20
20
20
20
20
WATTS
WATTS
WATTS
WATTS
WATTS
WATTS
±
±
±
±
±
±
12
15
12
15
12
15
VDC
VDC
VDC
VDC
VDC
VDC
EFF.
(TYP.)
80%
83%
86%
87%
80%
85%
86%
88%
80%
85%
87%
88%
85%
87%
87%
88%
87%
89%
EFF.
(MIN.)
77%
81%
84%
85%
78%
83%
84%
86%
78%
83%
85%
86%
83%
85%
85%
86%
85%
87%
CASE
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
WDD20
-
-
-
-
-
-
-
-
-
-
-
-
03S1
05S1
12S1
15S1
03S2
05S2
12S2
15S2
03S3
05S3
12S3
15S3
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FF
FEATURES
LOW COST
2:1 WIDE INPUT RANGE
I/O ISOLATION
INPUT Pi FILTER
SHORT CIRCUIT PROTECTION
HIGH PERFORMANCE
2 YEARS WARRANTY
DESCRIPTION
THE WDD20 SERIES ARE 15 WATTS AND 20 WATTS SINGLE & DUAL OUTPUT DC/DC CONVERTERS, 2:1
WIDE INPUT RANGE WITH I/O ISOLATION AND SHORT CIRCUIT PROTECTION FEATURES MAKES IT SUITABLE
USED ON VARIABLE APPLICATIONS WITH LOW COST. ALL WDD20 MODELS CONTAIN PI INPUT FILTER TO
MINIMIZE REFLECTED RIPPLE & NOISE. ALL MODELS ARE PACKAGED IN
2” x 1.6” x 0.4”
BLACK COATED
METAL CASE, AND PCB MOUNTABLE DIRECTLY.
CHINFA ELECTRONICS IND., CO. LTD.
ISO 9001 Certified
www.chinfa.com
sales@chinfa.com
WDD20 SERIES
SPECIFICATION
GENERAL SPECIFICATION
* Switching frequency: .........................
* Isolation voltage: ..............................
* Isolation resistance: ..........................
* Operating ambient temperature: .........
* Storage temperature: ........................
* Max. Case temperature: .....................
* M.T.B.F.: ..........................................
* Cooling: ...........................................
* Temperature coefficient: ....................
* Dimension: ......................................
DC-DC CONVERTER
15 ~ 20W
All Specifications Typical At Nominal Line, Full Load, 25℃ Unless Otherwise Noticed
180KHz
1,500VDC
100M
Ω(min.)
-25 to +71℃
-40 to +100℃
100℃
277,000Hrs at @ GF40, according to MIL-HDBK-217F
Free air convection
±0.02%
/
℃
50.8 x 40.6 x 10.2mm
INPUT SPECIFICATIONS
* Input voltage range / frequency: ........ 9 ~ 18VDC for 12V
18 ~ 36VDC for 24V
36 ~ 72VDC for 48V
* Input filter: ....................................... Pi type
* No load input current: ........................ 20mA for 12V in
15mA for 24V in
10mA for 48V in
* Max. Input voltage: ........................... 20VDC for 12V in
40VDC for 24V in
75VDC for 48V in
* Startup voltage: .................................8.5VDC for 12V in
15VDC for 24V in
33VDC for 48V in
OUTPUT SPECIFICATIONS
* Output voltage accuracy: ...................
±2%
at Vo_nom
* Minimum load: .................................. No load for single output models
±10%
at Vo_nom for dual output models
* Line regulation: ................................
±1%
at Vo_nom
* Load regulation: ...............................
±2%
at Vo_nom for single output models
±5%
at Vo_nom for dual output models
* Ripple & noise: ................................. 150mV (max.)
* Efficiency: ........................................ Up to 89%, see model list
* Voltage trim range: ........................... Vout x 10%
Vout x 5% for 3.3 Vout
* Derating: ......................................... See table 1
* Case material: .................................. Metal
CONTROL AND PROTECTION
* Remote on/off: ................................. ON : open or 8 ~ 10VDC
OFF : -0.3 ~ 2VDC
* Input reversed: ................................. Shunt diode use external fuse
* Output short circuit: .......................... Continuous
CHINFA ELECTRONICS IND., CO. LTD.
ISO 9001 Certified
www.chinfa.com
sales@chinfa.com
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