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参数资料
| 型号： | AEH15G48-7 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 37.5 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | 2.400 X 2.280 INCH, 0.500 INCH HEIGHT, HALF BRICK PACKAGE-9 |
| 文件页数： | 17/35页 |
| 文件大小： | 409K |
| 代理商： | AEH15G48-7 |
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A
A
A E
E
E H
H
H H
H
H a
a
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B
B rrrriiiic
c
c k
k
k P
P
P o
o
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w
w e
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C
C o
o
o n
n
n v
v
v e
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e rrrrtttte
e
e rrrrs
s
3
3 6
6
6 V
V
V D
D
D C
C
C tttto
o
o 7
7
7 5
5
5 V
V
V D
D
D C
C
C IIIIn
n
n p
p
p u
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2
2 ....5
5
5 V
V
V O
O
O u
u
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p
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u tttt,,,, 5
5
5 0
0
0 --1
1
1 5
5
5 0
0
0 W
W
-24-
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used, the +Sense lead must be connected with
+Vo, and -Sense with -Vo. Also note that the
output voltage and the remote sense voltage
offset must be less than the minimum overvolt-
age trip point. Note that at elevated output
voltages the maximum power rating of the
module remains the same, and the output
current capability will decrease correspond-
ingly.
Output T
Output Trimming
rimming
Users can increase or decrease the output volt-
age set point of a module by connecting an
external resistor between the TRIM pin and
either the SENSE (+ ) or SENSE ( - ) pins. The
trim resistor should be positioned close to the
module. If not using the trim feature, leave
the TRIM pin open.
Trimming up by more than 10% of the nominal
output may damage the converter or trig the
OVP protection. Trimming down more than
10% can cause the converter to regulate
improperly. Trim down and trim up circuits and
the corresponding configuration are shown in
Figure 10 to Figure 13.
Note that at elevated output voltages the
maximum power rating of the module
remains the same, and the output current
capability will decrease correspondingly.
Output Over-Current Protection
AEH series DC/DC converters feature foldback
current limiting as part of their Overcurrent
Protection (OCP) circuits. When output current
exceeds 110 to 140% of rated current, such as
during a short circuit condition, the output will
shutdown immediately, and can tolerate short
circuit conditions indefinitely. When the over-
current condition is removed, the converter will
automatically restart.
0
10
20
30
40
50
60
70
80
90
100
01
234
5678
9
10
% Change In Output Voltage (y)
Adjustment
Resistor
Value
(k
)
Vo(100+y)
Radj-up =
(100+2y)
1.26y
y
-
+Vin
-Vin
CNT
Case
+Vout
-Vout
Sense(+)
Trim
Sense(–)
Radj-up
RLOAD
Where y is the adjusting percentage of the voltage.
0 < y < 10
Radj-up is in k
.
Fig.11 Resistor Selection for Trimming Up
2.5V Outputs
Fig.10 Circuit Configuration and Equation
to Trim Up Output Voltage
Radj-down =
where y is the adjusting percentage of the voltage.
0 < y < 10
Radj-down is in k
.
Radj-down
RLOAD
100
y
- 2
+Vin
-Vin
CNT
Case
+Vout
-Vout
Sense(+)
Trim
Sense(–)
% Change In Output Voltage (y)
Adjustment
Resistor
Value
(k
)
0
10
20
30
40
50
60
70
80
90
100
01
23
456
7
8
9
10
Fig.13 Resistor Selection for Trimming
Down Output Voltage
Fig.12 Circuit Configuration and Equation
to Trim Down Output Voltage
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