Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16th Brick)
Performance Curves
2.5V Version
Efficiency vs. Output Current, TA=25°C
Power Dissipation vs. Output Current, TA=25°C
10
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36 Vdc
Vin = 48 Vdc
Vin = 75 Vdc
8
6
4
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
2
0
0
4
8
12
16
20
0
5
10
15
20
Output Current (Amps)
Output Current (Amps)
Figure 18. 2.5V Efficiency vs. output current at various
Figure 19. 2.5V Power Dissipation vs. load current at
input line conditions, TA = 25°C.
various input line conditions, TA = 25°C.
Figure 20. 2.5V Startup Characteristic at VIN = 36Vdc,
Figure 21. 2.5V Output Ripple at VIN = 48Vdc, IO =
IO = Full Load, TA = 25°C, CO = 0.
Full Load, TA = 25°C.
MODEL: ALD12/18/20/25 SERIES
AUGUST 17, 2005 – REVISION C
SHEET 11 OF 20
ASTEC [ Astec America, Inc ]
