AEH 24V Input
H
alf-
B
rick Series Power Converters
2 . 5 V, 3 . 3 V, 5 V S i n g l e O u t p u t , 5 0 - 1 5 0 W
Introduction
The AEH 24Vin series comes in a industry stan-
dard half-brick package of
2.4" x 2.28" x 0.5"
and footprint. The AEH 24Vin series is available
with 2:1 input range of 18-36V. Outputs of 2.5V,
3.3V, and 5V are fully isolated from input and
the isolation voltage is 1500Vdc.
The typical
efficiencies are 88% for the 5V output, 87%
for the 3.3V output, and 86% for the 2.5V
output.
Designed using a synchronous rectification
topology, AEH 24Vin series incorporates simple
structure, good electrical performance and high
reliability. Standard features include input LVP,
OCP, output OVP, short circuit protection, and
over-temperature protection. Using aluminum
based plate, the maximum case temperature
can reach 100
° C
.
The AEH 24Vin series is designed to meet
CISPR22, FCC Class A, UL, TUV, and CSA
certifications.
Design Features
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High Efficiency
High power density
Low output noise
Metal baseplate
CNT function
Remote sense
Trim function
Input under-voltage lockout
Output short circuit protection
Output current limiting
Output over-voltage protection
Overtemperature protection
High input-output isolation voltage
Options
!
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Heat sink available for extended operation
Choice of CNT logic configuration
TEL:
FAX:
USA
1-760-930-4600
1-760-930-0698
Europe
44-(0)1384-842-211
44-(0)1384-843-355
Asia
852-2437-9662
852-2402-4426
-2-
www.astec.com
AEH 24V Input
H
alf-
B
rick Series Power Converters
2 . 5 V, 3 . 3 V, 5 V S i n g l e O u t p u t , 5 0 - 1 5 0 W
Typical Application
Fuse*
+Vin
CNT
C1
Case
Trim
-Vout
-Vin
-Sense
+Sense
+Vout
Vin
C4
C2
Load
C3
Fuse*:
Use external fuse ( fast blow type ) for each unit.
50W output : 10A fuse
75W output : 15A fuse
100W output : 20A fuse
150W output : 30A fuse
C1:
Recommended input capacitor C1
-40 °C~ +100 °C:
m
47µF/100V electrolytic capacitor.
C2:
Recommended output capacitor C2
0°C~ +100°C: one 2200 µF/ 6.3V electrolytic capacitor
Below 0°C: use 1 X 220µF tantalum capacitor parallel with a 2200µF/ 6.3V electrolytic capacitor
C3:
Recommended 4700p
F/2000V
C4:
Recommended 1
µF/10V
TEL:
FAX:
USA
1-760-930-4600
1-760-930-0698
Europe
44-(0)1384-842-211
44-(0)1384-843-355
Asia
852-2437-9662
852-2402-4426
-3-
www.astec.com
AEH 24V Input
H
alf-
B
rick Series Power Converters
2 . 5 V, 3 . 3 V, 5 V S i n g l e O u t p u t , 5 0 - 1 5 0 W
Absolute Maximum Rating
Characteristic
Input Voltage(continuous)
Input Voltage(peak/surge)
Operating temperature
storage temperature
Min
-0.3
-0.3
-40
-55
Typ
Max
40
50
100*
125
Units
Vdc
Vdc
°C
°C
100ms non-repetitive
*:case temperature
Notes
Input Characteristics
Characteristic
Input Voltage Range
Input Reflected Current
Turn-off Input Voltage
Turn-on Input Voltage
Turn On Time
14
15
Min
18
Typ
24
25
15.5
16.5
15
Max
36
80
17
18
25
Units
Vdc
mAp-p
V
V
ms
Notes
Control Function
Characteristic
Logic High
Logic Low
Control Current
Min
3
-0.7
Typ
Max
15
1.2
2
Units
Vdc
Vdc
mA
Notes
General Specifications
Characteristic
MTBF
Isolation
Pin solder temperature
Hand Soldering Time
Weight
70
Min
Typ
1880
1500
260
5
Max
Units
k Hrs
Vdc
°C
s
grams
wave solder < 10 s
iron temperature 425°C
Notes
Bellcore TR332, Tc=30°C
TEL:
FAX:
USA
1-760-930-4600
1-760-930-0698
Europe
44-(0)1384-842-211
44-(0)1384-843-355
Asia
852-2437-9662
852-2402-4426
-5-
www.astec.com
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