Distributed (parallel) inductor design for VRM applications

Author

Collins, C. ; Duffy, M.

Author_Institution

Dept. of Electron. Eng., Nat. Univ. of Ireland, Galway, Ireland

Volume

41

Issue

10

fYear

2005

Firstpage

4000

Lastpage

4002

Abstract

The design of planar magnetic components for application in voltage regulator modules (VRMs) is investigated. In particular, the application of distributed magnetic structures that facilitate locating the VRM closer to the processor load is proposed, so that interconnect impedance and its effects can be reduced. It is shown that in addition to facilitating VRM packaging, the utilization of winding and core regions is improved by replacing a single lumped component with parallel and coupled inductor designs.

Keywords

coils; inductors; lumped parameter networks; machine windings; packaging; voltage regulators; VRM packaging; core; coupled inductor; distributed magnetic structures; inductor design; interconnect impedance; lumped component; parallel inductor; planar magnetic components; processor load; voltage regulator modules; winding; Coupling circuits; Impedance; Inductance; Inductors; Integrated circuit interconnections; Magnetic cores; Regulators; Saturation magnetization; Steady-state; Voltage; Distributed magnetics; planar magnetics; voltage regulator module (VRM) inductor;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.855163

Filename

1519515