AEH High Effici
en
cy Series Half-Brick Power Converters
36VDC to
7
5VDC Inpu
t
, 1.5V@30A Output
Introduction
AEH30M48(N) single output product comes
with a 2:1 input range of 36V-75V, isolated out-
puts 1.5V/30A. Standard features include input
low voltage protection(LVP), output over-volt-
age protection(OVP), over-current protec-
tion(OCP), over-temperature protection(OTP),
CNT, Trim, and remote sense functions. The
input-output isolation is 1500Vdc, and it can
operate up to 100
°C(base-plate temperature)
without derating. AEH30M48(N) single output
isolated DC/DC converters are built using the
industry standard half-brick pin-out and pack-
age:
61.0mm x 57.9mm x 12.7mm (2.4"
x
Design Features
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High Efficiency
High power density
Low output noise
Metal base-plate
CNT function
Trim function
Remote sense
Input under-voltage protection
Output short circuit protection
Output current limiting
Output over-voltage protection
Over-temperature protection
High input-output isolation voltage
2.28" x 0.5").
Typical efficiencies are 78% for
the 1.5V@30A output.
The AEH30M48(N) single output is designed to
meet CISPR22, EN55022, UL, TUV, and CSA
certifications. Designed for high reliability, the
converters use high quality components, 100%
surface mount technology and manufactured in
ISO9001 facilities.
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 High Effici
en
cy Series Half-Brick Power Converters
36VDC to
7
5VDC Inpu
t
, 1.5V@30A Output
Typical Application
Fuse*
Vin(+)
+SEN
Vo(+)
CNT
C1
CASE
TRM
Vo(-)
Vin(-)
-SEN
C4
C2
Load
K
power
C3
NOTE:
The figure is Negative Logic Control, if the CNT pin is left open, the converter will default to 'con-
trol off' operation. Positive Logic Control is also available.
Positive Logic Control: Low=Off, High=On.
Negative Logic Control: Low=On, High=Off.
Recommended External components:
Fuse*: Recommended: 3A.
C1: Recommended 100µF/100V (use two parallel at -40
° C
).
C2: Recommended electrolytic capacitor of 2200µF /16V(LOW ESR).
C3: Recommended 4700pF/2000V
C4: Recommended metallic film capacitor of 1µF /16V.
Block Diagram
+Vin
+Vout
-Vin
-Vout
+Sense
Trim
CNT
-Sense
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 High Effici
en
cy Series Half-Brick Power Converters
36VDC to
7
5VDC Inpu
t
, 1.5V@30A Output
Electrical Characteristic
Absolute Maximum Rating
Parameters
Input voltage (+Vin ~ -Vin)
CNT voltage (CNT ~ -Vin)
Isolated voltage
Operating ambient temperature
Storage temperature
Min.
-0.3
-0.7
-
-40
-40
Typ.
-
-
-
-
-
Max.
80
15
1500
+100
+125
Unit
Vdc
Vdc
Vdc
°C
°C
Note
Continuously
Continuously
Input-output
Input characteristics
Parameter
Input voltage range
Maximum input current
Input under-voltage shutdown
Input reflected current
Code
Vin
Iin
-
-
Min.
36
-
30
-
Typ.
48
-
33
Max.
75
2
35
30
Unit
Vdc
A
Vdc
mAp-p
Conditions
(the lowest input voltage, rated output )
( 5Hz-20MHz, 12µH impedance,
ambient temperature Ta=25°C )
General Specification
Parameter
MTBF
Weight
Code
-
-
Min.
-
Typ.
70
Max.
-
-
Unit
hour
g
Conditions
2000000
-
CNT Function
Parameter
Logic High
Logic Low
Control Current
Code
-
-
-
Min.
3.5
-0.7
-
Typ.
-
-
-
Max.
15
1.2
1
Unit
V
V
mA
Conditions
Logic Low
CNT characteristics
Parameter
CNT is set on, input voltage
sudden change (ON)
Output voltage rise time
Output voltage rush over
Trise
Trush
-
-
10
0
20
-
ms
%Vo
Code
Min.
Typ.
-
Max.
10
Unit
ms
Conditions
(80% rated load, ambient temperature
25° C)
Tdelay -
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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