AEE03A48-7 Astec Power, AEE03A48-7 Datasheet - Page 19

• Manufacturer Part Number: AEE03A48-7
• Manufacturer: Astec Power

TEL:
FAX:
Pin Location
Input Characteristic
Pin Location
Input Characteristic
pin side view
USA
1-760-930-4600
1-760-930-0698
The +Vin and -Vin input connection pins are
located as shown in Figure 1. AEE low power
high efficiency converters have a 2:1 input volt-
age range of 18-36V and 36-75V.
Care should be taken to avoid applying
reverse polarity to the input which can dam-
age the converter.
Fusing
The AEE low power high efficiency power
modules have no internal fuse. An external
fuse must always be employed! To meet
international safety requirements, a 250 Volt
rated fuse should be used. If one of the input
lines is connected to chassis ground, then the
fuse must be placed in the other input line.
Standard safety agency regulations require
input fusing. Recommended fuse ratings for
AEE low power high efficiency are shown in
Fusing
STANDOFF
TYP,4 PLACES
A A
A A
1 1
1 1
E E
E E
Fig.1 Pin Location
8 8
8 8
E E
E E
V V
V V
d d
d d
L L
L L
c c
c c
o o
o o
w w
w w
t t
t t
o o
o o
P P
P P
Europe
44-(0)1384-842-211
44-(0)1384-843-355
3 3
3 3
o o
o o
6 6
6 6
w w
w w
V V
V V
e e
e e
d d
d d
r r
r r
c c
c c
H H
H H
& &
& &
i i
i i
g g
g g
3 3
3 3
h h
h h
6 6
6 6
V V
V V
E E
E E
d d
d d
f f
f f
f f
f f
c c
c c
i i
i i
c c
c c
t t
t t
i i
i i
o o
o o
e e
e e
n n
n n
Asia
852-2437-9662
852-2402-4426
7 7
7 7
c c
c c
5 5
5 5
y y
y y
V V
V V
d d
S S
d d
S S
Table 1.
T
Input Reverse V
Under installation and cabling conditions where
reverse polarity across the input may occur,
reverse polarity protection is recommended.
Protection can easily be provided as shown in
Figure 2. In both cases the diode rating is deter-
mined by the power of the converter. Diodes
should be rated at 2A for 24Vin, 1A for 48Vin.
Placing the diode across the inputs rather
than in-line with the input offers an advan-
tage in that the diode only conducts in a
reverse polarity condition, which increases
circuit efficiency and thermal performance.
Input Undervoltage Protection
The AEE low power high efficiency series is
protected against undervoltage on the input. If
the input voltage drops below the acceptable
range, the converter will shut down. It will auto-
matically restart when the undervoltage condi-
tion is removed.
T
Input Reverse V
Input Undervoltage Protection
c c
c c
e e
e e
able 1
able 1
Fig.2 Reverse Polarity Protection Circuits
r r
r r
I I
I I
i i
i i
n n
n n
e e
e e
p p
p p
s s
s s
Series
u u
24Vin
48Vin
u u
D D
D D
t t
t t
, ,
, ,
C C
C C
www.astec.com
1 1
1 1
-
-
D D
5 5
D D
5 5
+Vin
C C
C C
-Vin
W W
W W
C C
a a
C C
a a
oltage Protection
oltage Protection
t t
t t
o o
o o
t t
t t
Fuse Rating
n n
n n
O O
O O
v v
v v
u u
u u
e e
e e
1A
2A
t t
r r
t t
r r
p p
p p
t t
t t
e e
e e
u u
u u
r r
r r
t t
t t
s s
s s
+Vin
-Vin
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