ELECTRICAL CHARACTERISTICS CURVES

(%)

95

 

 

 

 

 

 

 

 

 

 

 

 

 

EFFICIENCY

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

75

 

 

 

 

 

 

 

 

 

 

 

 

36Vin

 

 

 

 

 

 

 

48Vin

 

 

70

 

 

 

 

75Vin

 

 

65

 

 

 

 

 

 

 

1

2

3

4

5

6

6.6

 

 

 

 

 

OUTPUT CURRENT (A)

(W)

4.0

 

 

 

 

 

 

 

 

 

 

 

 

 

DISSIPATION

3.5

 

 

 

 

 

 

3.0

 

 

 

 

 

 

POWER

2.5

 

 

 

 

 

 

 

2.0

 

 

 

 

 

 

 

1.5

 

 

 

 

 

 

 

1.0

 

 

 

 

36Vin

 

 

 

 

 

 

 

 

 

0.5

 

 

 

 

48Vin

 

 

 

 

 

 

75Vin

 

 

 

 

 

 

 

 

 

0.0

 

 

 

 

 

 

 

1

2

3

4

5

6

6.6

OUTPUT CURRENT (A)

Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C.

Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25°C.

(A)

1.2

 

 

 

 

 

 

 

 

 

CURRENT

 

 

 

 

 

 

 

Io=6.6A

 

1.0

 

 

 

 

 

 

Io=3.96A

 

 

 

 

 

 

 

Io=0.66A

 

INPUT

 

 

 

 

 

 

 

 

0.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.6

 

 

 

 

 

 

 

 

 

 

0.4

 

 

 

 

 

 

 

 

 

 

0.2

 

 

 

 

 

 

 

 

 

 

0.0

 

 

 

 

 

 

 

 

 

 

30

35

40

45

50

55

60

65

70

75

INPUT VOLTAGE (V)

Figure 3: Typical input characteristics at room temperature.

Figure 4: Turn-on transient at full rated load current (2 ms/div).

Top Trace: Vout (2V/div); Bottom Trace: ON/OFF Control (5V/div).

3

DS_S48SA05006_06022006

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Image 3
Delta Electronics S48SA manual Electrical Characteristics Curves, Typical input characteristics at room temperature