Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16
th
Brick)
MODEL: ALD12/ 18/20/ 25 SERIES SHEET 14 OF 20
AUGUST 17, 2005 – REVISION C
Performance Curves
1.5V Version
Effic iency vs. Output Current, T
A
= 25°C
55%
60%
65%
70%
75%
80%
85%
90%
95%
0 5 10 15 20 25
O utput Current [A]
E ffi cie cny [%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Figure 30. 1.5V Efficiency vs. output current at various
input line conditions, T
A
= 25°C.
Figure 31. 1.5V Power dissipation vs. output current at
various input line conditi ons, T
A
= 25°C.
Power Dissipa tion vs. Output Current, T
A
=25°C
0
2
4
6
8
10
0 5 10 15 20 25
Output Current [A]
Power Dissipation [
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Figure 32. 1.5V Startup Characteristic at V
IN
= 48V, T
A
= 25°C.
Figure 33. 1.5V Output Ripple at V
IN
= 48Vdc, I
O
=
Full Load, T
A
= 25°C.