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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： | 14/35页 |
| 文件大小： | 409K |
| 代理商： | AEH15G48-7 |
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-21-
USA
Europe
Asia
TEL:
1-760-930-4600
44-(0)1384-842-211
852-2437-9662
FAX:
1-760-930-0698
44-(0)1384-843-355
852-2402-4426
www.astec.com
Pins
The +Vin and -Vin input connection pins are
located as shown in Figure 1. AEH converters
have a 2:1 input voltage range and 2.5V output
converters can accept 36-75 Vdc.
Care should be taken to avoid applying
reverse polarity to the input which can dam-
age the converter.
Input Characteristic
Fusing
The AEH power module has 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.
T
Table 1
able 1
Standard safety agency regulations require
input fusing. Recommended fuse ratings for the
AEH Series are shown in Table 1.
Input Reverse V
Input Reverse Voltage Protection
oltage Protection
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 20A/100V for 150W,
10A/100V for 100W, 7.5A/100V for 75W, and
5A/100V for 50W.
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 AEH is protected against undervoltage on
the input. If the input voltage drops below the
acceptable range, the converter will shut down.
It will automatically restart when the undervolt-
age condition is removed.
Input Filter
Input filters are included in the converters to
help achieve standard system emissions certifi-
cations. Some users however, may find that
additional input filtering is necessary. The AEH
2.5V output series has an internal switching fre-
quency of 180kHz so a high frequency capaci-
tor mounted close to the input terminals pro-
-Vin
Case
CNT
-Vout
-Sense
Trim
+Sense
+Vout
+Vin
Component-side footprint
Fig.1 Pin Location
+Vin
-Vin
+Vin
-Vin
Fig.2 Reverse Polarity Protection Circuits
Rated Pout
Fuse Rating
50 Watt
5A
75 Watt
7.5A
100 Watt
10A
150 Watt
20A
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相关代理商/技术参数 |
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| AEH15G48N | 功能描述:DC/DC转换器 CONV DC-DC 50W 48VIN 2.5V NEG-EN RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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