4

DFA20 SERIES – SINGLE OUTPUT

120

100

60

CURRENT LIMIT MODE >

80

40

20

0

080

20

40

100

120

140

60

OUTPUT VOLTAGE Vs. OUTPUT LOAD

OUTPUT LOAD (%)

Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)

80

85

75

70

65

60

90

040

30

20

LINE = 72VDC

LINE = 48VDC

LINE = 36VDC

10

50

60

70

80

90 100

48 VOLT EFFICIENCY Vs. LOAD

LOAD (%)

NOTES ON USING THE CURVES

1)

The input currents are for 20 watts of output power. For

±5 volt output models the current is approximately 15% less.

2)

The efficiency curves are for 12 volt output models. To use for other models adjust as follows:

±5 volt models subtract approximately 3%.

±15volt models add approximately 1%.

80

75

70

65

85

040

30

20

LINE = 18VDC

LINE = 12VDC

LINE = 9VDC

10

50

60

70

80

90 100

12 VOLT EFFICIENCY Vs. LOAD

LOAD (%)

85

80

75

70

65

915

16

17

14

13

12

100% FULL LOAD

50% FULL LOAD

10

11

18

12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

80

85

75

70

65

90

040

30

20

LINE = 36VDC

LINE = 24VDC

LINE = 18VDC

10

50

60

70

80

90 100

24 VOLT EFFICIENCY Vs. LOAD

LOAD (%)

85

80

75

70

90

18

30

32

34

28

26

24

100% FULL LOAD

50% FULL LOAD

20

22

36

24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

85

75

80

70

65

60

90

36

60

64

68

56

52

48

100% FULL LOAD

50% FULL LOAD

40

44

72

48 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

1.0

0.8

0.6

0.2

0.4

0.0

040

30

20

100% LOAD

50% LOAD

10

50

60

80

70

48 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

2.0

1.5

1.0

0.5

0.0

020

15

10

100% LOAD

50% LOAD

525

30

40

35

24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

4

3

2

1

0

08

6

4

100% LOAD

50% LOAD

2

10

12

16

14

18

12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE

LINE INPUT (VOLTS)

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