Magnetic properties of compressed amorphous powder cores and their application to a fly-back converter

Author

Endo, Isao ; Tatsumi, Hiroshi ; Otsuka, Isamu ; Yamamoto, Hiroshi ; Shintani, Atsunobu ; Koshimoto, Hideo ; Yagi, Masaaki ; Murata, Katsuaki

Author_Institution

Technol. Dev. Lab., Amagasaki, Japan

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3421

Lastpage

3423

Abstract

Fe-based amorphous powder cores with glass binder were fabricated by hot-pressing techniques. The cores exhibited low core losses, relatively low effective permeability and high flux density, which are superior magnetic properties when applied to choking coil or fly-back transformers operating in the high frequency range. The core obtained was applied to a fly-back converter working at 100 kHz. The conversion efficiency examined at output power up to 300 W was higher than that of converters using a typical commercial Sendust core and a single gap ferrite core

Keywords

DC-DC power convertors; amorphous magnetic materials; ferromagnetic materials; hot pressing; iron alloys; magnetic leakage; permeability; powder cores; powder metallurgy; (Fe_0.97Cr_0.03)₇₆(Si_0.5B_0.5)₂₂C₂; 100 kHz; 300 W; Fe-based amorphous powder cores; compressed amorphous powder cores; conversion efficiency; fly-back converter; fly-back transformers; glass binder; high flux density; hot-pressing; low core losses; low effective permeability; magnetic properties; output power; Amorphous materials; Coils; Core loss; Frequency; Glass; Magnetic cores; Magnetic properties; Permeability; Powders; Transformer cores;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908847

Filename

908847