WDD20-03SXU(2010) データシートの表示（PDF） - CHINFA ELECTRONICS
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WDD20-03SXU Datasheet PDF : 8 Pages
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WDD20U SERIES
SINGLE & DUAL OUTPUT
SPECIFICATION
All Specifications Typical At Nominal Line, Full Load, 25oC Unless Otherwise Noticed
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
APPPPRROOVVAALLSSAANNDDSTSATNANDADRADRD
UL/cUL
UL 60950-1 Recognized
TUV
CE
Vibration
EN 60950-1, CB scheme
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)
PHYSICAL CHARACTERISTICS
Case size
Case material
Weight
50.8 x 40.64 x 10.16 mm (2 x 1.6 x 0.4 inches)
Plastic base / Metal case
60 g
Patting material
Silicone
MECHANISM & PIN CONFIGURATION
mm [inch]
2.54 [0.10]
45.72 [1.80]
5.08 [0.20]
10.16 [0.4]
6.00 [0.24]
17.78 [0.70]
DIA 1.00 [0.04]
5.08 [0.20]
10.16 [0.40]
GENERAL TOLERANCE
0.00[0.00] - 30.00[1.18]
±0.30[0.01]
30.00[1.18] - 120.00[4.72]
±0.50[0.02]
PIN ASSIGNMENT
GENERAL
PIN NO.
1
2
SINGLE
Vi+
Vi -
DUAL
Vi+
Vi -
4
ON / OFF
ON / OFF
5
NO PIN
Vo +
5
6
1
2
7
4
8
50.80 [2.00]
BOTTOM VIEW
10.16 [0.40]
10.16 [0.40]
10.16 [0.40]
6
7
8
Vo +
Vo -
Trim
com
Vo -
Trim
CIRCUIT SCHEMATIC
‧Block diagram for WDD20U series with single output
‧Block diagram for WDD20U series with dual output
Vi +
Switching
Device
Rectifier
Vi -
ON / OFF
PWM
Controller
Opto -
Isolation
Reference &
Error Amp.
RECOMMENDED CIRCUIT
‧Recommended filter for EN55022 Class B compliance
L1
+
Vin +
Vo +
C1
C2 WDD20U
Vin -
Vo -
-
C3
www.chinfa.com
2010.05.21
Vo +
Vi +
Vo -
Vi -
Trim
ON / OFF
Switching
Device
PWM
Controller
Rectifier
Rectifier
Opto -
Isolation
Reference &
Error Amp.
Vo +
com
Vo -
Trim
‧Recommended EN 55022 Class B filter circuit layout.
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