Data Sheet

March 27, 2008

QPW050/060 Series Power Modules; DC-DC converters

36-75Vdc Input; 1.2Vdc to 3.3Vdc Output

8

Characteristic Curves

The following figures provide typical characteristics for the QPW060A0Y (1.8V, 60A) at 25ºC. The figures are

identical for either positive or negative Remote On/Off logic.

TIME, t (2.5 ms/div)

Figure 13. Typical Input Characteristic at Room

Temperature.

Figure 16. Typical Start-Up Using Remote On/Off,

negative logic version shown.

TIME, t (500 μs/div)

Figure 14. Typical Converter Efficiency Vs. Output

current at Room Temperature.

Figure 17. Typical Transient Response to Step

change in Load from 50% to 25%of Full Load at

Room Temperature and 48 Vdc Input.

TIME, t (2.5

μs/div)

TIME, t (500 μs/div)

Figure 15. Typical Output Ripple and Noise at Room

Figure 18. Typical Transient Response to Step change

in Load from 50% to 75% of Full Load at Room

Temperature and 48 Vdc Input.

36 Vin

48 Vin

75 Vin

0

0.5

1

1.5

2

2.5

3

3.5

4

25

35

45

55

65

75

Io = 0 A

Io = 30 A

Io = 60 A

81

83

85

87

89

91

5 1015202530 354045505560

Vi = 36 V

Vi = 48 V

Vi = 75 V