"MPCG" for large-current using ultra low loss dust material "SENNTIX" formed by one-piece construction

Hiroyuki Matsumoto, Akiri Urata, Yasunobu Yamada, Shigeyoshi Yoshida

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Recently, the performance of electronic equipment has been advancing rapidly and function availability has been increasing. This trend is of particular importance in the case of compact equipment such as notebook PCs, where a reduction in voltages in order to reduce the power consumption has resulted in an increase in the current flowing through the power lines. This has made it necessary for the inductors to be capable of dealing satisfactorily with the high-current supply and to improve the power loss characteristic. NEC TOKIN has started de development of low-loss magnetic core materials that can improve power conversion efficiency and has produced an ultra low loss dust material for inductors, named "BENNTIX." "SENNTIX" is a metallic glass dust powder that features both a high saturated magnetic flux density that is proper to metallic materials and a stable amorphous structure proper to metal glass composite materials. There is no magnetic saturation under a high-current supply and it can therefore significantly reduce magnetic loss resulting from the effect of the core material. NEC TOKIN's low-loss choke coils of the MPCG Series use the low-loss metallic glass composite material "SENNTIX" as the core material and offer a high power conversion efficiency reflecting the low loss characteristic of the material. We are now advancing the application and deployment of "SENNTIX" in power components with the aim of providing solutions for power supply systems issues of electronic equipment that is subjected to increasing power loads. This policy will enable energy saving and control of heat generation as well as improvements in the power integrity.

Original languageEnglish
Pages (from-to)66-70
Number of pages5
JournalNEC Technical Journal
Volume2
Issue number4
Publication statusPublished - 2007 Dec 1
Externally publishedYes

Keywords

  • Choke coil
  • DC/DC converter
  • Dust core
  • Inductor
  • Low loss
  • Metallic glass

ASJC Scopus subject areas

  • Information Systems
  • Materials Science(all)
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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