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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

48

Characteristics

Conditions

min.

typ.

max.

unit

Input voltage range

9

18

48

36

75

VDC

VDC

Ta min ... Ta max, Io nom

24

Case temperature

Operating at Vi nom, Io nom

Storage temperature

Non operational

-40

+ 100

+ 100

Derating

o

% / C

Vi nom

No load input current

24V models

48V models

mA

mA

Vi nom, Io = 0

Input voltage w/o damage

VDC

VDC

Io nom

24V models

48V models

80

Startup voltage

VDC

Io nom

24V models

48V models

-40

+ 60

-40

+ 71

Input filter

Pi type

INPUT SPECIFICATIONS

See derating curve

VDC

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 84%, See model list

Vi nom, Io nom, Po / Pi

OUTPUT SPECIFICATIONS

mV

3.3V output models

3.3V & 5V output models

5

100

150

mV

o

All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed

SPECIFICATION

12V, 15V & dual

5V, 12V, 15V & dual

Vi nom,

Io nom

3.3V & 5V output models

12V, 15V & dual output models

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Dimension

L50.8 x W40.6 x H10.2

Cooling

Free air convection

Case material

Metal

mm

GENERAL

30

20

40

8.5

16

2008.09.23