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AN1603: Heat Sink in Switch Power Supply

Abstract: This paper discusses how useful the heat sink is when trying to transfer the heat generated by some electronic or a mechanical devices, it also introduces the basic knowledge thermal resistance and how to reduce the thermal resistance by heat sink and others.

Introduction: In recent years with the high power density required and the increase in the heat generated by the devices in electronic equipment, the problem pf how to cool these electronic devices becomes a big challenge. Heat sink as a high cost-efficient heat exchanger, is paid much more attention to by a thermal designer, the optimal design of heat sink can directly determine the device’s reliability, service life and whole performance.


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