Technical Reference Notes
AEQ75Y48 Series
(Single Output Quarter Brick)
Performance Curves
Power Dissipation vs. Output Current, TB=45°C
Efficiency vs. Output Current, TB = 45°C
22
20
18
16
14
12
10
8
95%
90%
85%
80%
75%
70%
65%
60%
55%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
6
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
4
2
0
0
15
30
45
60
75
0
20
40
60
Output Current [A]
Output Current [A]
Figure 5. Efficiency vs. Load Current at Baseplate
Temperature, TB = 45ºC.
Figure 6. Power Dissipation vs. Load Current at Baseplate
Temperature, TB = 45ºC.
Output Current vs. Temperature
75
60
45
30
0 LFM (0 m/s)
100 LFM (0.5 m/s)
200 LFM (1 m/s)
400 LFM (3 m/s)
15
0
25
35
45
55
65
75
85
Ambient Temperature [°C]
Figure 7. Output Power Derating Curves at VIN = 48Vdc.
Figure 8. Output Ripple Waveform at VIN = 48Vdc,
TA = 25ºC, IO = 75A.
MODEL: AEQ75Y48 SERIES
JULY 21, 2005 - REVISION 01
SHEET 9 OF 12
ASTEC [ Astec America, Inc ]
