Notes

1

Nominal input voltages are 24VDC and 48VDC.

2

Maximum figure, at full load.

3

Measured from low line to high line at full load.

4

Measured from full load to no load.

5

An external capacitor, connected across the input is required for normal

operation. The capacitor should be capable of withstanding 600mA of

ripple current. Recommended capacitors: Nippon Chemi-Con SXE series,

56µF/100V for the NFC20-48xxx and the Nippon Chemi-Con LXF series,

560µF/50V for the NFC20-24xxx.

6

Extended operating temperature range is available on the following

models: NFC20-24S05, -24S12, -24S15, -48S05, -48S12 and -48S15.

The suffix –4 must be added to the NFC20 model number,

e.g. NFC20-48S05-4.

7

Long term continuous operation into a short circuit will compromise the

reliability of the unit.

2.00

(50.8)

0.46

(11.7)

1.60

(40.6)

1

2

3

4

5

6

7

8

0.70

(17.8)

0.60

(15.2)

0.70

(17.8)

0.50

(12.7)

1.80

(45.7)

0.040 Dia.

(1.0)

Stand-off

0.020

± 0.010

0.40

(10.2)

0.40

(10.2)

0.40

(10.2)

0.20

(5.1)

0.10 (2.5)

0.15 (3.8) Min.

BOTTOM

VIEW

ALL DIMENSIONS IN INCHES (mm)

TOLERANCES .XX =

±0.02, .XXX = ±0.005

International Safety Standard Approvals

VDE0805/EN60950/IEC950 File No. 10401-3336-1074

Licence No. 1628

UL1950 Reg. File No. E136005

CSA C22.2 No. 950 File No. LR41062C

Output can be externally trimmed

by ±10% using either method shown below

INPUT

OUTPUT

OVP

OUTPUT

INPUT

EFFICIENCY

REGULATION

MODEL

VOLTAGE

CURRENT

NUMBER

18-36VDC

5VDC

6.2VDC

4000mA

1083mA

81%

±0.1%

±0.5%

NFC20-24S05

18-36VDC

12VDC

15VDC

1670mA

1030mA

83%

±0.1%

±0.5%

NFC20-24S12

18-36VDC

15VDC

18VDC

1330mA

1030mA

83%

±0.1%

±0.5%

NFC20-24S15

18-36VDC

±12VDC

30VDC

±833mA

1040mA

83%

±0.1%

±3%

NFC20-24D12

18-36VDC

±15VDC

36VDC

±666mA

1030mA

84%

±0.1%

±3%

NFC20-24D15

36-72VDC

5VDC

6.2VDC

4000mA

527mA

82%

±0.1%

±0.5%

NFC20-48S05

36-72VDC

12VDC

15VDC

1670mA

515mA

83%

±0.1%

±0.5%

NFC20-48S12

36-72VDC

15VDC

18VDC

1330mA

515mA

83%

±0.1%

±0.5%

NFC20-48S15

36-72VDC

±12VDC

30VDC

±833mA

510mA

85%

±0.1%

±3%

NFC20-48D12

36-72VDC

±15VDC

36VDC

±666mA

505mA

86%

±0.1%

±3%

NFC20-48D15

PIN CONNECTIONS

PIN NUMBER

SINGLE OUTPUT

DUAL OUTPUT

1

+ Input

+ Input

2

– Input

– Input

3

No Pin

No Pin

4

Control

Control

5

No Pin

+ Output

6

+ Output

Common

7

– Output

– Output

8

Trim

Trim

20 Watt

Wide input DC/DC converters

DC/DC CONVERTERS

|

20W DC/DC

PAGE 121

http://www.artesyn.com

10K

TRIM

UP/DOWN

TRIM

DOWN

TRIM

UP

+ OUT

TRIM

- OUT

Connections for Output Voltage Trim

EXTERNAL OUTPUT TRIMMING

Data Sheet © Artesyn Technologies® 2000

The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising

from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.

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