Design exploration of package-embedded inductors for high-efficiency integrated voltage regulators

Sebastian Mueller, Mohamed Lamine Faycal Bellaredj, Anto Kavungal Davis, Paul A. Kohl, Madhavan Swaminathan

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

This paper describes the modeling and design of package-embedded magnetic-core inductors for a system-in-package-based high-efficiency integrated voltage regulator. An application example is used to demonstrate the complete design process, starting with the fabrication of two candidate magnetic composite materials. Based on the measured properties of these materials, magnetic-core inductors are designed and simulated using full-wave simulations. Finally, the overall voltage regulator efficiencies resulting from inductor designs are obtained from analytical equations, which allows for rapid evaluation of different scenarios. Voltage regulator efficiency with magnetic-core inductors is seen to be considerably higher than with similarly sized air-core inductors. Notably, this is even true at high switching frequencies where the magnetic-core inductors have lower quality factors than the air-core inductor.

Original languageEnglish (US)
Article number8419786
Pages (from-to)96-106
Number of pages11
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Volume9
Issue number1
DOIs
StatePublished - Jan 2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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