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L36SA12004NRFA 参数 Datasheet PDF下载

L36SA12004NRFA图片预览
型号: L36SA12004NRFA
PDF下载: 下载PDF文件 查看货源
内容描述: 德尔福系列L36SA , 2 ×1.6 , 50W系列DC / DC电源模块: 18 〜 75V的, 12V / 4A出来 [Delphi Series L36SA, 2 x 1.6, 50W Family DC/DC Power Module: 18~75V in, 12V/4A out]
分类和应用: 电源电路
文件页数/大小: 13 页 / 662 K
品牌: DELTA [ DELTA ELECTRONICS, INC. ]
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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.  
Thermal Derating  
Heat can be removed by increasing airflow over the module.  
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.  
Hence, the choice of equipment to characterize the  
thermal performance of the power module is a wind  
tunnel.  
THERMAL CURVES  
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’’).  
Figure 21: Hot spot temperature measured point  
The allowed maximum hot spot temperature is defined at 130℃  
PWB  
MODULE  
FACING PWB  
L36SA12004(standard) Output Current vs. Ambient Temperature and Air Velocity  
Output Current (A)  
@Vin = 48V (Either Orientation)  
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0.0  
Natural  
Convection  
AIR VELOCITY  
100LFM  
AND AMBIENT  
TEMPERATURE  
MEASURED BELOW  
THE MODULE  
200LFM  
300LFM  
50.8 (2.0”)  
400LFM  
500LFM  
AIR FLOW  
12.7 (0.5”)  
30  
35  
40  
45  
50  
55  
60  
65  
70  
75  
80  
85  
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)  
Ambient Temperature (  
)
Figure 20: Wind tunnel test setup  
Figure 22: Output current vs. ambient temperature and air velocity  
@Vin=48V (Either Orientation)  
DS_L36SA12004_02142007  
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