ALQ40_03 Datasheet, PDF (10/16 Pages) Astec America, Inc – Industry Standard ¼ Brick: 36V-75V Input / 50A Output Current

Technical Reference Notes
ALQ40/50 Series
(Open Frame Single Output Quarter Brick)
Performance Curves
ALQ40F48 (3.3V) SERIES
Efficiency VS. Load Current, T_A=25°C
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
10
20
30
40
Output Current (Amps)
Power Dissipation vs Output Current, T_A=25°C
20
Vin = 36 Vdc
16
Vin = 48 Vdc
Vin = 75 Vdc
12
8
4
0
0
10
20
30
40
Output Current (Amps)
Figure 5. Efficiency vs. Load Current Curves at T_A=25°C Figure 6. Power Dissipation vs. Load Current at T_A=25°C
for different input voltages with 300 LFM airflow directed for different input voltages with 300LFM airflow directed
from Pins 3 to 1.
from Pins 3 to 1.
Efficiency vs Load Current, T_A=85°C
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
0
Vin = 36V
Vin = 48V
Vin = 75V
10
20
30
40
Output Current (Amps)
Power Dissipation vs Output Current, T_A=85°C
20
Vin = 36 Vdc
16
Vin = 48 Vdc
Vin = 75 Vdc
12
8
4
0
0
10
20
30
40
Output Current (Amps)
Figure 7. Efficiency vs. Load Current Curves at T_A=85°C Figure 8. Power Dissipation vs. Load Current at T_A=85°C
for different input voltages with 300 LFM airflow directed for different input voltages with 300LFM airflow directed
from Pins 3 to 1.
from Pins 3 to 1.
MODEL: ALQ50 SERIES
APRIL 21, 2003 - REVISION A (PRELIMINARY)
SHEET 10 OF 16