Artesyn MVME51005E SBC Installation and Use (July 2014) - Manual (Page 137)

Appendix C
MVME51005E Single Board Computer Installation and Use (6806800A38D) 139
C
Thermal Analysis
C.1 Thermally Significant Components
Ambient temperature, air flow, board electrical operation and software operation affect board
component temperatures. To evaluate the thermal performance of a circuit board assembly,
you should test the board under actual operating conditions. These operating conditions vary
depending on system design.
A thermal analysis was performed in a representative system to verify operation within
specified ranges. Refer to
Table A-1 in Appendix A, Specifications . You should evaluate the
thermal performance of the board in your application.
This appendix gives systems integrators the information necessary to conduct thermal
evaluations of the board in their specific system configuration. It identifies thermally significant
components and lists the corresponding maximum allowable component operating
temperatures. It also provides example procedures for component-level temperature
measurements.
Table summarizes components that show significant temperature rises. You should monitor
these components to assess thermal performance.
Table C-1 also supplies the component
reference designator and the maximum allowable operating temperature.
You can find components on the board by their reference designators. Refer to Figure C-1 and
Figure C-2 .
The preferred temperature measurement location for a component may be:.
Some of the procedures will return the board to the factory debugger environment. It is
important to note that the Board was tested under these conditions before it left the factory.
The self-tests may not run in all user-customized environments.
 junction - refers to the temperature measured by an on-chip thermal device
 case - refers to the temperature at the top, center surface of the component
 air - refers to the ambient temperature near the component
Table C-1 Thermally Significant Components on the MVME5100 Single Board Computer
Reference
Designator? Generic
Description
Maximum Allowable
Component Temperature
(degrees C) 1
Measurement Location
U8 Hawk ASIC 105 Junction