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| 型号： | F48SA28025PRFA |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 700 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, FULL BRICK PACKAGE-10 |
| 文件页数： | 3/13页 |
| 文件大小： | 436K |
| 代理商： | F48SA28025PRFA |
DS_F48SA28025_08072008
11
THERMAL CONSIDERATIONS
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments
encountered
in
most
electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in which
the power modules are mounted.
The
following
figure
shows
the
wind
tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the neighboring PWB
and the top of the power module is constantly kept at
6.35mm (0.25’’).
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
12.7 (0.5”)
MODULE
AIR FLOW
50.8 (2.0”)
FACING PWB
PWB
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
Figure 19:
Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the module.
The module’s maximum case temperature is 95℃.
To
enhance system reliability, the power module should always
be operated below the maximum operating temperature. If
the
temperature
exceeds
the
maximum
module
temperature, reliability of the unit may be affected.
THERMAL CURVES
Figure 20:
Temperature measurement location viewed from the
IMS side
The allowed maximum hot spot temperature is defined at 95℃
350
400
450
500
550
600
650
700
750
25
35
45
55
65
75
85
95
Output Power (W)
Hot spot Temperature(℃)
F48SA28025(Standard) Output Power vs. Hot Spot Temperature
(Either Orientation)
Figure 21:
Output power vs. hot spot temperature (Either
Orientation)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| F48SA28025PRFB | 制造商:DELTA 制造商全称:Delta Electronics, Inc. 功能描述:Delphi Series F48SA, 700W Full Brick Family DC/DC Power Module: 48Vin, 28Vout |
| F48T12/CW | 制造商:OSRAM 功能描述:39W, 48" MOL, T12 INSTANT START SLIMLINE FLUORESCENT LAMP, COOL WHITE PHOSPHOR, |
| F48T12/CW/ALTO | 制造商:CEC Industries 功能描述:LAMP, FLUORESCENT, SINGLE, PIN, 39W, Lamp Base Type:Single Pin, Power Rating:39W |
| F48T12/CW/VHO | 制造商:OSRAM 功能描述:115W, 48"MOL, T12 VHO (1500 MA) RAPID START FLUORESCENT LAMP, COOL WHITE PHOSPHO |
| F48T8/TL741/HO | 制造商:CEC Industries 功能描述:LAMP, FLUORESCENT, R17D, 44W, Lamp Base Type:R17d, Power Rating:44W, Luminous Fl |
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