DocumentCode
803703
Title
Expression of High Frequency-Losses in Mn-Zn Ferrite
Author
Fujiwara, T. ; Tahara, R.
Author_Institution
Matsushita Electric Works, Ltd.
Volume
8
Issue
11
fYear
1993
Firstpage
795
Lastpage
800
Abstract
This paper gives a numerical expression for power losses at high frequencies (100 kHz to 2 MHz) in Mn-Zn ferrites, which are used as the core materials of transformers and inductors for switching power supplies. The power losses of some commercial ferrites were measured, and a new type of empirical formula was derived to express the power loss as a function of frequency and magnetic flux density. The calculated results agree well with measurements. The formula will prove useful in the design of compact and efficient magnetic components.
Keywords
Density measurement; Ferrites; Frequency measurement; Inductors; Loss measurement; Magnetic cores; Magnetic materials; Power measurement; Power supplies; Transformer cores;
fLanguage
English
Journal_Title
Magnetics in Japan, IEEE Translation Journal on
Publisher
ieee
ISSN
0882-4959
Type
jour
DOI
10.1109/TJMJ.1993.4565747
Filename
4565747
Link To Document