参数资料
型号: AXA005A0X-SRZ
厂商: LINEAGE POWER LLC
元件分类: 电源模块
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封装: ROHS COMPLIANT, SMT-5
文件页数: 7/21页
文件大小: 578K
代理商: AXA005A0X-SRZ
Data Sheet
October 1, 2009
Austin MicroLynxTM 12V SMT Non-isolated Power Modules:
10 – 14Vdc input; 0.75Vdc to 5.5Vdc Output; 5A output current
LINEAGE POWER
15
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of the
module will result in an increase in reliability. The thermal
data presented here is based on physical measurements
taken in a wind tunnel. The test set-up is shown in Figure
32. Note that the airflow is parallel to the long axis of the
module as shown in figure 31. The derating data applies
to airflow in either direction of the module’s long axis.
Air Flow
Tref2
Top View
Bottom View
Tref1 (inductor winding)
Figure 31. Tref Temperature measurement location.
The thermal reference points, Tref 1 and Tref2 used in the
specifications of thermal derating curves are shown in
Figure 31. For reliable operation these temperatures
should not exceed 125
oC.
The output power of the module should not exceed the
rated power of the module (Vo,set x Io,max).
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame Board-
Mounted Power Modules” for a detailed discussion of
thermal aspects including maximum device temperatures.
Figure 32. Thermal Test Set-up.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Thermal derating curves showing
the maximum output current that can be delivered by
various module versus local ambient temperature (TA) for
natural convection and up to 1m/s (200 ft./min) are shown
in the Characteristics Curves section.
Layout Considerations
Copper paths must not be routed beneath the power
module. For additional layout guide-lines, refer to
FLTR100V10 application note.
Air
flow
x
Power Module
Wind Tunnel
PWBs
7.24_
(0.285)
76.2_
(3.0)
Probe Location
for measuring
airflow and
ambient
temperature
25.4_
(1.0)
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