ALQ40_03 Datasheet, PDF (4/16 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)
Electrical Specifications (continued)
INPUT SPECIFICATION
Parameter
Device Symbol Min
Typ
Max
Unit
Operating Input Voltage
All
V_IN
36
48
75
V_DC
Input Under-Voltage Lock-out
All
T_ON Threshold
33
-
35
Vdc
T_OFF Threshold
32
-
34
Maximum Input Current¹
F (3.3V)
I_IN,max
-
-
4.4
A
Conditions: V_IN =V_IN,min
G (2.5V)
-
-
4.3
I_O = I_O,max; T_A = 25 ºC
Y (1.8V)
-
-
3.2
K (1.2V)
-
-
2.3
Max P_DISS @ I_O = 0A (V_IN = V_IN,NOM)
3V3 (F)
2V5 (G)
-
-
5
W
-
-
5
1V8 (Y)
-
-
3.3
1V2 (K)
-
Input Reflected Ripple Current²
All
I_I1/ I_I2
-
Conditions: P_O = P_O,max; T_A = 25 ºC
BW: 5Hz to 20MHz
-
2.5
-
10
mA_PK-PK
Note: 1. An input line fuse is recommended for use.
2. External input capacitance required. See Input Ripple Current test measurement setup on Fig 1.
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Set point
V_IN = V_{IN, min} to V_{IN, max;}
I_O =I_O,Max
Output Regulation
Line: V_IN = V_{IN, Min} to V_{IN, Max}
Load: I_O = I_{O, Min} to I_{O, Max}
Temperature: Ta = -40 ºC to
+85ºC
Ripple and Noise⁴
Peak-to-Peak: (5Hz to 20MHz)
Output Current³
External Load Capacitance
Capacitor ESR
Output Current-limit Inception
V_OUT = 90% V_O,SET5
Device
3V3 (F)
2V5 (G)
1V8 (Y)
1V2 (K)
Symbol
V_O,SET
All
-
1V2 (K)
All
-
1V2 (K)
All
-
1V2
-
1V8/2V5
-
3V3
3V3
I_O
All
All
-
3V3
I_O
All
Min
3.260
2.465
1.770
1.180
-
-
-
-
-
0
0
-
4
41
52
Typ
3.300
2.500
1.800
1.200
-
-
-
25
35
45
-
-
-
-
-
-
Max
3.340
2.535
1.830
1.220
±0.20
±0.30
±0.20
±0.30
±1.00
50
75
100
40
50
25,000
-
52
68
Unit
Vdc
Vdc
Vdc
Vdc
%Vo
mVp-p
mVp-p
mVp-p
A
µF
mΩ
A
MODEL: ALQ50 SERIES
APRIL 21, 2003 - REVISION A (PRELIMINARY)
SHEET 4 OF 16