Data Sheet

May 16, 2008

HW/HC004/005/006 Series DC-DC Power Module:

18-36Vdc & 36-75Vdc Input; 1.0V-5Vdc Output; 4A - 6A Output Current

6

Characteristic Curves

The following figures provide typical characteristics for the HW004A0A (5.0V, 4A) at 25ºC. The figures are identical

for either positive or negative Remote On/Off logic.

70

72

74

76

78

80

82

84

86

88

90

01

2

3

4

0

1

2

3

4

5

0

10

203040

50

60

708090100

110

3.0 m/s (600 ft./min.)

2.0 m/s (400 ft./min.)

1.0 m/s (200 ft./min.)

NATURAL CONVECTION

Figure 1. Converter Efficiency versus Output Current

Figure 4. Derating Output Current versus Local

Ambient Temperature and Airflow

TIME, t (1

μs/div)

TIME, t (20ms/div)

Figure 2. Typical Output Ripple and Noise.

Figure 5. Typical Start-Up with application of Vin.

TIME, t (50

μs/div)

TIME, t (20ms/div)

Figure 3. Transient Response to Dynamic Load

Change from 50% to 75% to 50% of full load.

Figure 6. Typical Start-Up Using Remote On/Off,

negative logic version shown.