ALQ15XX48X Datasheet, PDF (11/19 Pages) Astec America, Inc – Industry Standard ¼ Brick: 36V-75V Input / 60W Output Power

Technical Reference Notes
ALQ15XX48X Series
(Open Frame Dual Output Quarter Brick)
Performance Curves
ALQ15FG48
3.3V/2.5V Efficiency @ P_O1 = P_O2
90
85
80
75
70
65
36Vin
60
48Vin
55
75Vin
50
5 10 15 20 25 30 35 40 45 50 55 60
TOTAL OUTPUT POWER [W]
Figure 5. Efficiency at balanced power (P_O1 = P_O2) for
various input voltages; taken at T_A=25ºC with the
converter mounted vertically and with 200LFM airflow
directed from Pin 3 to Pin 1.
3.3V/2.5V Efficiency @ Balanced Current
90
85
80
75
70
65
36Vin
48Vin
60
75Vin
55
0
2
4
6
8
10
LOAD CURRENT I_O1 = I_O2 [A]
Figure 6. Efficiency curve for balanced output current
(I_O1 = I_O2) at various input voltages; taken at T_A=25ºC
with the converter mounted vertically and with 200LFM
airflow directed from Pin 3 to Pin 1.
Figure 7. Start-up characteristic of Vo1 (CH1) and Vo2 Figure 8. Typical output current waveform under an Over
(CH2) at balanced load current; V_IN = 48V.
Current Condition. Output current scale at 0.5A/ mV.
MODEL: ALQ15 SERIES
MARCH 4, 2004 - REVISION 01
SHEET 11 OF 19