Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16th Brick)
Performance Curves
5V Version (continued)
ALD12A48 Current vs. Temperature
12
10
8
6
0 LFM
4
100LFM
200 LFM
300LFM
400 LFM
2
0
25
40
55
Temperature (°C)
70
85
Figure 10. 5V Output current vs. ambient temperature
curves at VIN = 48Vdc.
Figure 11. 5V Transient Response 50% to 75% step at
VIN = 48Vdc, TA = 25°C, di/dt = 0.1A/µs, CO = 0.
3.3V Version
Power Dissipation vs. Output Current, TA=25°C
Efficiency vs. Output Current, TA=25°C
10
95%
90%
Vin = 36Vdc
8
6
4
2
0
Vin = 48Vdc
Vin = 75Vdc
85%
80%
75%
70%
Vin = 36Vdc
65%
Vin = 48Vdc
60%
55%
Vin = 75Vdc
0
3
6
9
12
15
18
0
3
6
9
12
15
18
Output Current (Amps)
Output Current (Amps)
Figure 12. 3.3V Efficiency vs. output current at various
Figure 13. 3.3V Power Dissipation vs. load current at
input line conditions, TA = 25°C.
various input line conditions, TA = 25°C.
MODEL: ALD12/18/20/25 SERIES
AUGUST 17, 2005 – REVISION C
SHEET 9 OF 20
ASTEC [ Astec America, Inc ]
