Core Materials for High Frequency VRM Inductors

Author

Kelly, S. ; Collins, C. ; Duffy, M. ; Rhen, F.M.F. ; Roy, S.

Author_Institution

NUI, Galway

fYear

2007

Firstpage

1767

Lastpage

1772

Abstract

The application of PCB integrated electroplated cores for VRM inductors is proposed, where the motivation is to increase frequencies beyond 1 MHz so that VRM transient response can be improved. It is shown that electroplated alloys have loss properties that are at least competitive with those of the highest frequency ferrite material available. Various PCB integrated inductor designs are presented, with toroidal cores providing the smallest solution. Measured losses under non-sinusoidal operating conditions are provided and work is ongoing to characterise the materials further.

Keywords

electroplated coatings; inductors; losses; magnetic cores; printed circuits; transient response; voltage regulators; PCB integrated electroplated cores; PCB integrated inductor; core materials; electroplated alloys; high frequency VRM inductors; loss properties; non-sinusoidal operating conditions; toroidal cores; transient response; Ferrites; Frequency conversion; Inductance; Inductors; Loss measurement; Power measurement; Power system harmonics; Switching frequency; Transient response; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2007. PESC 2007. IEEE

Conference_Location

Orlando, FL

ISSN

0275-9306

Print_ISBN

978-1-4244-0654-8

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2007.4342267

Filename

4342267