Planar Inductor Design

Christina Collins, Dr. Maeve Duffy

The aim of this work is to investigate if distribution (paralleling) of inductors offer an increased output power density and therefore will allow closer integration of VRM to the processor.This work focus on PCB winding technology as this is a step towards placing inductors onto the motherboard of the processor.

Start date: 14th of October 2002. This project has been completed.

Project Publications

Journal
C. Collins, M. Duffy,  "Limits and Opportunities for Distributed Inductors in High Current, High Frequency Applications", IEEE Transactions on Power Electronics, vol. 25, no. 11, pp. 2710-2721, November 2010. 
C. Collins, M. Duffy, "Distributed (Parallel) Inductor Design for VRM Applications ", IEEE Transactions on Magnetics, vol. 41, no. 10, pp. 4000-4002, (also Proceedings of Intermag 2005, April 2005, Nagoya, Japan), October 2005.

Conference
M. Duffy, N. Wang, "Potential for Improved Efficiency of PSoC with Parallel Micro-Inductors", Poster presentation, PowerSoc 2010, Cork, October 2010.
C. Collins, M. Duffy, "Improving the Light-Load Efficiency of VRMs Using Parallel Inductors", IEEE Energy Conversion Congress and Expo, Atlanta, September 2010.
C. Collins, M. Duffy, "Custom Core Design for Distribute (parallel) Inductor Design for VRM applications", 40th Universities Power Engineering Conference, UPEC2005, UCC, Cork, Ireland, vol. 1, September 2005.
C. Collins, M. Duffy, "Investigation of Passive Component Size in VRMs", 35th IEEE Power Electronics Specialists Conference, PESC'04, Aachen, Germany, vol. 3, pp. 2075-2081, June 2004.
C. Collins, M. Duffy, "Analysis of Inductor Performance for VRM Applications", 38th Universities Power Engineering Conference, UPEC 2003, Aristotle University, Thessaloniki, Greece, vol. 1, September 2003.

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