Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16
th
Brick)
MODEL: ALD12/ 18/20/ 25 SERIES SHEET 15 OF 20
AUGUST 17, 2005 – REVISION C
Performance Curves
1.5V Version (continued)
1.2V Version
Figure 34. 1.5V Output current vs. ambient temperature
curves at V
IN
= 48Vdc.
Output Current vs. Temperature
0
5
10
15
20
25
25 40 55 70 85
Ambient T emperature [°C]
Current [A
0 LFM (0 m/s)
10 0 L F M ( 0 . 5 m / s )
200 LFM (1 m/s)
400 LFM (3 m/s)
Figure 35. 1.5V Output Transient Response 50% to 75%
step at V
IN
= 48Vdc, T
A
= 25°C, di/dt = 0.1A/µs, C
O
= 0.
Efficiency vs. Output Current, T
A
=25° C
55%
60%
65%
70%
75%
80%
85%
90%
95%
0 5 10 15 20 25
O utput C urrent [A]
Efficiecny [%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
Figure 36. 1.2V Efficiency vs. output current at various
input line voltage, T
A
= 25°C.
Figure 37. 1.2V Power dissipation vs. output current at
various input line conditi ons, T
A
= 25°C.
Power Dissipation v s. Output Curtret, T
A
=25° C
0
2
4
6
8
10
0 5 10 15 20 25
Output Current [A]
Power Dissipation [
Vin = 36 Vdc
Vin = 48 Vdc
Vin = 75 Vdc
