Computer board cooling
Smart card design for computers. Part 1

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Computer board cooling


Smart card design for computers. Part 1

Author : Jean JOLY

Publication date: May 10, 2007 | Lire en français

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4. Computer board cooling

The increasing power dissipation P of processors and the need to maintain system operating temperatures compatible with reliability requirements call for the use of appropriate cooling processes. It is difficult to approach board cooling without considering the system environment.

Example

laptop CPU board, rack-mounted desktop board.

The fundamental concept of thermal analysis at component or system level is the thermal resistance R th expressed in °C/ W (or thermal conductivity 1/R th ).

For a component, the temperature difference Δt between the chip surface and the surrounding environment is expressed by the formula :

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