Title :
Distributed (parallel) inductor design for VRM applications
Author :
Collins, C. ; Duffy, M.
Author_Institution :
Dept. of Electron. Eng., Nat. Univ. of Ireland, Galway, Ireland
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855163
