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参数资料
| 型号： | AEH20G48-8 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 50 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： | 22/35页 |
| 文件大小： | 409K |
| 代理商： | AEH20G48-8 |
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-29-
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
Convection W
Convection Without Heat Sinks
ithout Heat Sinks
Heat transfer can be enhanced by increasing
the airflow over the module. Figure 28 shows
the maximum power that can be dissipated by
the module.
In the test, natural convection airflow was mea-
sured at 0.05 m/s to 0.1 m/s (10 ft./min. to 20
ft./min.). The 0.5 m/s to 4.0 m/s (100 ft./min. to
800 ft./min.) curves are tested with externally
adjustable fans. The appropriate airflow for a
given operating condition can be determined
through figure 28.
Example 1. How to calculate the minimum
airflow required to maintain a desired Tc?
If a AEH30G48 module operates with a 48V
line voltage, a 30 A output current, and a 40 ° C
maximum ambient temperature, What is the
minimum airflow necessary for the operating?
Determine PD ( referenced Fig.26 ) with con-
dition:
Vin = 48 V
lO = 30 A
Get: PD = 13.5 W
And with TA = 40 °C
Determine airflow ( Fig.28. ):
v = 1.5 m/s (300 ft./min.)
Example 2. How to calculate the maximum
output power of a module in a certain con-
vection and a max. TA?
What is the maximum power output for a
AEH30G48 operating at following conditions:
Vin = 48 V
V = 1.5 m/s (300 ft./min.)
TA = 40 °C
Determine PD ( Fig.28 )
PD = 14.5W
Determine IO ( Fig.26 ):
IO = 30 A
Calculate PO:
PO = (VO) x (IO) = 2.5 x 30 = 75 W
Although the two examples above use 100 ° C
as the maximum case temperature, for
extremely high reliability applications, one may
design to a lower case temperature as shown in
Example 4.
Heat Sink Configuration
Several standard heat sinks are available for
the AEH 50 W to 150 W modules as shown in
Figure 29 to Figure 31.
The heat sinks mount to the top surface of the
module with screws torqued to 0.56 N-m (5 in.-
57.9 (2.28)
61
(2.4)
1 IN. (WDL10040)
1 1/2 IN. (WDL15040)
1/4 IN. (WDL02540)
1/2 IN. (WDL05040)
Fig.30 Longitudinal Fins Heat Sink
1 IN. (WDT10040)
1 1/2 IN. (WDT15040)
61 (2.4)
1/4 IN. (WDT02540)
1/2 IN. (WDT05040)
57.9
(2.28)
Fig.31 Transverse Fins Heat Sink
89.1(3.51)
57.0
(2.24)
11.8
(0.465)
4.9(0.193)
Dimensions: millimeters (inches).
Fig.29 Non Standard Heatsink
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| AFBR-5103PZ | FIBER OPTIC TRANSCEIVER, 1270-1380nm, 125Mbps(Tx), 125Mbps(Rx), BOARD/PANEL MOUNT, SIP, SC CONNECTOR |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AEH20G48N | 功能描述:DC/DC转换器 CONV DCDC 100W 48Vin 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: |
| AEH24US05 | 制造商:XP Power 功能描述:PSU DESKTOP 24W 5V |
| AEH24US07 | 制造商:XPPOWER 制造商全称:XP Power Limited 功能描述:AC-DC Power Supplies |
| AEH24US10 | 制造商:XPPOWER 制造商全称:XP Power Limited 功能描述:AC-DC Power Supplies |
| AEH24US12 | 制造商:XP Power 功能描述:PSU DESKTOP 24W 12V |
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