AEH Half-Brick Power Converters
36VDC to 75VDC Input, 2.5V Output, 50-150W
Introduction
The AEH series comes in a industry standard
half-brick package of
2.4" x 2.28" x 0.5"
and
footprint, and incorporates the super high effi-
ciency up to 87% in 2.5V output and high power
density up to 54.8W/in
3
. The AEH series is
available with 2:1 input range of 36V-75V ( and
36V-72V is for 5V output ). Outputs of 2.5V,
3.3V, and 5V are fully isolated from input and
the isolation voltage is 1500Vdc.
The typical
efficiencies are 90% for the 5V output, 89%
for the 3V output, and 87% for the 2.5V out-
put.
Designed using a synchronous rectification
topology, AEH series incorporates simple struc-
ture, good electrical performance and high reli-
ability. 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 without derating.
The AEH 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 Half-Brick Power Converters
36VDC to 75VDC Input, 2.5V Output, 50-150W
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 rated output : 5A fuse
75W rated output : 7.5A fuse
100W rated output : 10A fuse
150W rated output : 20A 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 4700pF/2000V
C4:
Recommended 1µF/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