電気回路設計との統合によるスイッチング電源の熱設計手法の開発 : 自然空冷式電源の場合(熱工学,内燃機関,動力など)

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This paper describes an application example of thermal flow simulation to the design of a switch mode power supply (SMPS), that is natural convection air-cooled. As a simulation tool, a commercially available computational fluid dynamics (CFD) software was used and the modeling of configuration conditions was considered. In particular, the modeling of printed circuit board (PCB) and power semiconductor devices was examined by using the design of experiments method. As the heat generation sources, a field effect transistor (FET) and a diode were considered in the simulation, the calculation method of power loss is described. The difference between measured and calculated temperature values for power semiconductor devices was found to be within approximately 10K.
2004-02-25