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WDD20U 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

KHz

1,500

VDC

M

100

250

Case temperature

Operating at Vi nom, Io nom

Storage temperature

Non operational

-40

+ 100

+ 100

Derating

o

% / C

-40

+ 60

-40

See derating curve

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

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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Case material

Metal

Dimension

L40.6 x W50.8 x H10.2

mm

GENERAL

Cooling

Free air convection

48

Characteristics

Conditions

min.

typ.

max.

unit

Input voltage range

18

36

VDC

VDC

Ta min ... Ta max, Io nom

24

No load input current

24V models

mA

Vi nom, Io = 0

Input voltage w/o damage

40

VDC

Io nom

Startup voltage

Io nom

8.5

VDC

VDC

VDC

16

33

Input filter

Pi type

12V models

24V models

48V models

VDC

INPUT SPECIFICATIONS

12V models

48V models

24V models

12V models

48V models

9

35

12

48

30

20

15

18

75

20

80

2008.09.23