High frequency characteristic analysis of EMI filter in switch mode power supply (SMPS)

2003 ◽  
Author(s):  
D.H. Liu ◽  
J.G. Jiang
Keyword(s):  
Frequency Characteristic ◽  
Power Supply ◽  
High Frequency ◽  
Characteristic Analysis ◽  
Switch Mode Power Supply ◽  
Switch Mode ◽  
Emi Filter

Influence of Proximity-Effect Loss on Surface Temperature Distribution of High-Frequency Inductors

2004 ◽  
Author(s):  
Katsuhiro Koizumi ◽  
Masaru Ishizuka
Keyword(s):  
Thermal Conductivity ◽  
Surface Temperature ◽  
Power Supply ◽  
Proximity Effect ◽  
High Frequency ◽  
Modeling Method ◽  
Switch Mode Power Supply ◽  
Surface Temperature Distribution ◽  
Anisotropic Thermal Conductivity ◽  
Switch Mode

This paper describes the development of a thermal modeling method for high-frequency inductors used in switch mode power supply (SMPS). In the proposed modeling method, the effect of proximity-effect loss occurring near the air gap on winding surface temperature was considered. In addition, the effect of anisotropic thermal conductivity in a winding block on the winding surface temperature was considered. As the key point in the numerical modeling, the significance of considering the influence of the proximity-effect loss and the anisotropic thermal conductivity on the winding surface temperature was demonstrated experimentally and numerically.

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