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

6

Characteristic Curves

The following figures provide typical characteristics for the EQW025A0P1 (1.2V, 25A) at 25ºC. The figures are

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

70

72

74

76

78

80

82

84

86

0

5

10

15

20

25

Vin=75V

Vin=36V

Vin=48V

0

3

6

9

12

15

18

21

24

27

20

30

40

50

60

70

80

90

200 LFM

300 LFM

400 LFM

NC

100 LFM

Figure 1. Typical Converter Efficiency Vs. Output

current at Room Temperature.

Figure 4. . Derating Output Current versus Local

Ambient Temperature and Airflow

TIME, t (1

μs/div)

TIME, t (5ms/div)

Figure 2. Typical Output Ripple and Noise (Vin

=48Vdc, Io = 25A).

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

48Vdc, Io = 25A).

TIME, t (100

μs/div)

TIME, t (5ms/div)

Figure 3. Typical Transient Response to Dynamic

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

load at 48 Vdc Input.

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

negative logic version shown (Vin = 48Vdc, Io = 25A).