Technical Reference Notes
AEO_ALO40/35/30/20/10x48 Series
(Single Output 8
th
Brick)
AEO40x48 / ALO40x48 Single Output 8
th
Brick: Baseplate or Open-Frame Module
The AEO40x48 / ALO40x48 series is Astec’s High Current 8
th
Brick industry standard offering. Operating from an input voltage
range of 36V to 75V, the series provides 7 configured outputs starting from 1.2V all the way up to 12V. It delivers up to 40A max
current for 1.8V and lower at impressive levels of efficiency. It provides tight regulation and exhibits clean and monotonic output
start up characteristics. The AEO_ALO series comes with industry standard features such as Input UVLO; non-latching OCP,
OVP and OTP; Output Trim; Differential Remote Sense pins. Both baseplate (AEO) and open frame (ALO) construction are
available as well as TH or SMT termination. With its wide operating temperature range of -40°C to 85°C ambient, the converters
are deployable into almost any environment.
Electrical Parameters
Input
Input Range
Input Surge
36-75 VDC
100V / 100ms
Control
Enable
TTL compatible
(Positive or Negative Logic Enable Options)
Output
Load Current
Line/Load Regulation
Ripple and Noise
Output Voltage
Adjust Range
Transient Response
Up to 40A max (V
O
≤
1.8V)
< 1% V
O
40mV
P-P
typical
±10% V
O
2% Typical deviation
50% to 75% Load Change
20µs settling time (Typ)
+10%V
O
120% max
130% max
110
°C
Special Features
•
•
•
•
•
•
•
•
Industry Standard 8
th
Brick Footprint
Baseplate or Open frame construction
Low Ripple and Noise
Regulation to zero load
High Capacitive Load Start-up
Fixed Switching Frequency
Industry standard features: Input UVLO;
Enable; non-latching OVP, OCP and OTP;
Output Trim, Differential Remote Sense
Meets Basic Insulation
Remote Sense
Over Current
Protection
Over Voltage
Protection
Over Temperature
Protection
Environmental Specifications
•
•
•
-40ºC to 85ºC Operating Temperature
-55ºC to 125ºC Storage Temperature
MTBF > 1 million hours
Safety
UL + cUL 60950, Recognized
EN60950 through TUV-PS
MODEL: AEO40x48 / ALO40x48 SERIES
JUNE 24, 2005 - REVISION B
SHEET 1 OF 30
Technical Reference Notes
AEO_ALO40/35/30/20/10x48 Series
(Single Output 8
th
Brick)
Electrical Specifications
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional operation of
the device is converter is not implied at these or any other conditions in excess of those given in the operational section of
the specs. Exposure to absolute maximum ratings for extended period can adversely affect device reliability.
Parameter
Input Voltage
Continuous
Transient (100ms)
I/O Isolation
Input-to-Output
Operating Temperature
Storage Temperature
Operating Humidity
Max Voltage at Enable Pin
Max Output Power
1
Device
All
Symbol
Vin
Vin
trans
-
T
A
T
STG
-
P
O,MAX
Min
-0.3
-
1500
-40
-55
10
-0.6
-
-
-
-
-
-
-
Typical
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max
75
100
-
85
125
85
25
120.0
100.0
99.0
88.0
72.0
60.0
48.0
Unit
Vdc
All
All
All
All
All
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
Vdc
ºC
ºC
%
Vdc
W
INPUT SPECIFICATION
Device
All
All
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
All
All
Iin
max
Symbol
V
IN
Min
36
33
31
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typical
48
34
32
-
-
-
-
-
-
-
-
-
-
-
-
-
10
0.01
Max
75
36
34
4.2
3.5
3.5
3.3
3.0
2.7
2.5
4.0
4.0
4.0
4.0
4.5
3.5
3.0
30
-
Unit
Vdc
Vdc
A
Operating Input Voltage Range
Input Under-Voltage Lock-out
T_ON Threshold
T_OFF Threshold
Max Input Current
2
Standing Loss
W
Input Ripple Current
3
Inrush Current
I
I1
i
2
t
mAp-p
A
2
s
MODEL: AEO40x48 / ALO40x48 SERIES
JUNE 24, 2005 - REVISION B
SHEET 2 OF 30
Technical Reference Notes
AEO_ALO40/35/30/20/10x48 Series
(Single Output 8
th
Brick)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Output Voltage Set point
V
IN
= V
IN,MIN
to V
IN,MAX
I
O
= I
O,MAX
Device
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
All
Symbol
V
O,SET
Min
11.80
4.90
3.25
2.45
1.76
1.47
1.17
-
-
Typical
12.00
5.00
3.30
2.50
1.80
1.50
1.20
0.1
0.1
Max
12.20
5.10
3.35
2.55
1.84
1.53
1.22
0.2
0.5
Unit
Vdc
Output Regulation
Line
V
IN
= V
IN,MIN
to V
IN,MAX
Load
V
IN
= V
IN,NOM
I
O
= I
O,MIN
to I
O,MAX
Temp
V
IN
= V
IN,NOM
; I
O
= I
O,MAX
Output Ripple and Noise
4
Peak-to-Peak
I
O
= I
O,MAX
; V
IN
=V
IN,NOM
;
BWL = 20 MHz; T
A
=25
o
C
-
-
%
-
-
0.5
1.0
Output Current
5
Output Current-limit Inception
V
O
= 90% V
O,NOM
; T
A
= 25 ºC
V
IN
= V
IN,NOM
Non-latching / auto-recovery
External Load Capacitance
I
O
= I
O,MAX
, resistive load
ESR
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2))
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
B (12V0)
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
All
B (12V0)
A (5V0)
F (3V3)
-
-
-
-
-
-
-
-
I
O
I
O,OCP
C
EXT
0
0
0
0
0
0
0
11.5
24.0
33.0
41.0
44.0
44.0
44.0
-
-
-
-
4
50
40
40
20
40
30
20
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
120
90
75
75
60
60
60
10
20
30
35
40
40
40
17.0
32.0
41.5
49.0
78.0
78.0
78.0
20,000
1,500
10,000
10,000
-
mVp-p
A
A
µF
mΩ
MODEL: AEO40x48 / ALO40x48 SERIES
JUNE 24, 2005 - REVISION B
SHEET 3 OF 30
Technical Reference Notes
AEO_ALO40/35/30/20/10x48 Series
(Single Output 8
th
Brick)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Efficiency
V
IN
= V
IN,NOM
; I
O
= I
O,MAX
T
A
= 25 ºC;
Device
B (12V)
A (5.0V)
F (3.3V)
G (2.5V)
Y (1.8V)
M (1.5V)
K (1.2V)
B (12V)
A (5.0V)
F (3.3V)
G (2.5V)
Y (1.8V)
M (1.5V)
K (1.2V)
All
All
5V, 12V
All
5V, 12V
All
5V
12V
All
All
All
All
Symbol
η
η
η
η
η
η
η
V
O,OVP
Min
91.0
92.0
90.0
89.0
88.0
85.5
84.0
13.80
5.80
3.80
2.90
2.10
1.75
1.38
110
-
-
-
Typical
92.0
93.0
91.0
90.0
89.5
88.0
86.0
14.40
6.00
4.00
3.00
2.30
1.85
1.50
-
-
-
-
-
3.0
4.0
9.0
450
-
0
Max
93.0
94.0
93.0
92.0
90.5
89.5
87.5
15.00
6.20
4.30
3.20
2.50
2.38
1.80
120
17
20
17
20
9.0
11.0
16.0
520
10
110
3
Unit
%
Output Over Voltage Protection
Non-latching / autorecovery
V
Over Temperature Protection
Autorecovery
Input to Output Turn-On Delay
V
IN
= V
IN,NOM,
I
O
= I
O,MAX
Enable to Output Turn-On Delay
V
IN
= V
IN,NOM,
I
O
= I
O,MAX
Output Voltage Rise Time
10% to 90% of V
O,NOM
V
IN
= V
IN,NOM,
I
O
= I
O,MAX
Switching Frequency
Output Voltage Remote Sensing
Output Voltage Trim Range
6
Output Voltage Overshoot
Dynamic Response
di/dt = 0.1 A/µs
Peak Deviation
∆I
O
= 50% to 75% of Io
max
Settling Time
Vref = Vo
nom
Peak Deviation
∆I
O
= 50% to 25% of Io
max
Settling Time
Vref = Vo
nom
-
-
°C
ms
ms
-
-
-
F
SW
-
-
-
-
-
380
-
90
-
ms
kHz
%V
O
%V
O
%Vo
All
All
All
All
-
-
-
-
-
-
-
-
2
-
2
-
5
250
5
250
%
µs
%
µs
MODEL: AEO40x48 / ALO40x48 SERIES
JUNE 24, 2005 - REVISION B
SHEET 4 OF 30
Technical Reference Notes
AEO_ALO40/35/30/20/10x48 Series
(Single Output 8
th
Brick)
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Output Enable ON/OFF
Open collector TTL compatible
Positive Enable: Mod-ON
Mod-OFF
Negative Enable: Mod-ON
Mod-OFF
Note:
Device
Symbol
Min
Typical
Max
Unit
All
All
All
All
-
-
-
-
2.95
-0.50
-0.50
2.95
-
-
-
-
20
1.20
1.20
20
V
V
V
V
1. Derating curves for both openframe and baseplate modules are based on derated component junction
temperatures of 120
o
C or less where applicable.
2. Module is not internally fuesd; an external input line fuse is recommended for
use (e.g. Littlefuse
®
465 Series / 250V min).
3. Refer to Figure 1 for the input ripple current test measurement setup.
4. Refer to Fig 2 for the output ripple and noise test measurement setup.
5. Output derating may apply at elevated ambient temperatures. Please refer to the appropriate derating curves.
6. Refer to the output trim equations provided (Equation 1 and 2).
SAFETY AGENCY / MATERIAL RATING / ISOLATION
Parameter
Safety Approval
7
Material Flammability Rating
Parameter
Input to Output Capacitance
Input to output Resistance
Input to Output Insulation Type
Device
All
All
Device
All
All
All
UL/cUL 60950, 35d Edition – Recognized
EN 60950 through TUV
UL94V-0
Symbol
Min
Typical
Max
-
1000
-
-
10
-
-
Basic
-
Unit
pF
MOhms
-
Note:
7. The 3.3V, 5V and 12V modules have completed required safety approvals.
MODEL: AEO40x48 / ALO40x48 SERIES
JUNE 24, 2005 - REVISION B
SHEET 5 OF 30
Analog electronics
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