Data Sheet

December 12, 2008

EQW012/020/023/025 Series, Eighth-Brick Power Modules:

36 - 75Vdc Input; 1.2Vdc to 5Vdc Output; 12A to 25A Output

10

The following figures provide typical characteristics for the EQW020A0F (3.3V, 20A) at 25ºC. The figures are identical

for either positive or negative Remote On/Off logic.

70

73

76

79

82

85

88

91

04

8

12

16

20

Vin=48V

Vin=75V

Vin=36V

0

2

4

6

8

10

12

14

16

18

20

22

20

30

40

50

60

70

80

90

100 LFM

200 LFM

400 LFM

NC

300 LFM

Figure 25. Typical Converter Efficiency Vs. Output

current at Room Temperature.

Figure 28 . Derating Output Current versus Local

Ambient Temperature and Airflow

TIME, t (1

μs/div)

TIME, t (5ms/div)

Figure 26. Typical Output Ripple and Noise (Vin

=48Vdc, Io = 20A).

Figure 29. Typical Start-Up with application of Vin (Vin

= 48Vdc, Io = 20A).

TIME, t (100

μs/div)

TIME, t (5ms/div)

Figure 27. Typical Transient Response to Dynamic

Load change Load from 50% to 75% to 50% of Full

load at 48 Vdc Input.

Figure 30. Typical Start-Up Using Remote On/Off,

negative logic version shown (Vin = 48Vdc, Io = 20A).