Isolated and Regulated 40 WATT Modular DC/DC Converters

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ASTRODYNE PACIFIC: 886-2-26983458

INPUT SPECIFICATIONS

Input Voltage Ranges:

12 VDC Nominal

9-18 VDC

24 VDC Nominal

18-36 VDC

48 VDC Nominal

36-72 VDC

Input Filter

Pi Type

OUTPUT SPECIFICATIONS

Voltage and Current

See Selection Chart

Load Regulation

singles: +/-0.5%

duals: +/-1%

triples: 5 V:+/-2%, Aux: +/-5%

Line Regulation

singles: +/-0.5%

duals: +/-1%

triples: 5V:+/-2%, Aux:+/-5%

Temperature Coefficient

+/-0.02%/DegC

Ripple/Noise

1% Pk-Pk of Vout, typ

Voltage Stability

(singles/duals)

+/- 2%

(triples)

5 V:+/-2%, Aux: +/-5%

Short Circuit Protection

Continuous, self-recovering

Overvoltage Protection Threshold: 3.3V Output

3.9Volts

5V Output

6.2Volts

12V Output

15Volts

15V Output

18Volts

GENERAL SPECIFICATIONS

On/Off Control

(Ref to - Input pin)

Logic “1”/Open=ON

Logic “0”/GND=OFF

Input-Out Isolation

1600VDC

Isolation Resistance

10000 M Ohms

Efficiency

82%, typ

Switching Frequency

185Khz, typ

ENVIRONMENTAL SPECIFICATIONS

Oper. Temperature (Case)

-25 to +85 DegC(see derate)

Storage Temperature

Maximum Case Temp

MTBF

1.61 MHrs

MIL-HDBK-217F TA=25C FL

PHYSICAL SPECIFICATIONS

Case Material

Nickel-Coated Copper

Non-Conductive Base

Construction

Fully Encapsulated

Weight

4.5 oz, (126g)

may adversely affect long term reliability. Proper operation under conditions

other than the standard operating conditions is neither warranteed nor implied.

All specifications are typical at nominal input, full load, and 25DegC unless

otherwise noted

45

55

65

75

36

40

80

81

INPUT VOLTAGE (V)

FDC40-48S05

Efficiency VS Input Voltage

90

89

88

87

86

85

84

83

82

60

50

70

68

0.5

1

45

50

OUTPUT LOAD (A)

FDC40-48S05

Efficiency VS Output load

90

89

88

86

84

82

80

70

60

2

3

4

57

EFFICIENCY CURVES