Demonstration of a High-Inductance, High-Density, and Low DC Resistance Compact Embedded Toroidal Inductor for IVR

Claudio Alvarez, Prahalad Murali, Madhavan Swaminathan, Yusuke Oishi, Junichi Takashiro, Ryo Nagatsuka, Naoki Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Next-generation high-performance computing (HPC) platform requires to run at higher speed with higher power consumption levels. Integrated voltage regulators (IVR) with a conversion ratio of 12 V to 1 V can help to reduce the power distribution network (PDN) impedance, increase the voltage conversion efficiency, and increase the regulation bandwidth. In this work, we present a new package embedded inductor array for multi-phase IVRs with a DC resistance as low as 22.8 mΩ. Inductors with three magnetic materials are demonstrated. With one material a small signal inductance as high as 475 nH is obtained, suitable for 12 V to 1 V conversion at 2 MHz. Another material gives an inductance of 192 nH suitable for 12 V to 1 V IVRs at 5 MHz. Each inductor occupies less than 6.25 mm2 and are built with 400 µm thick metal polymer composite magnetic sheets. The metric effective AC resistance per unit inductance or Racx is used to predict the inductor performance.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE 71st Electronic Components and Technology Conference, ECTC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1293-1299
Number of pages7
ISBN (Electronic)9780738145235
DOIs
StatePublished - 2021
Event71st IEEE Electronic Components and Technology Conference, ECTC 2021 - Virtual, Online, United States
Duration: Jun 1 2021Jul 4 2021

Publication series

NameProceedings - Electronic Components and Technology Conference
Volume2021-June
ISSN (Print)0569-5503

Conference

Conference71st IEEE Electronic Components and Technology Conference, ECTC 2021
Country/TerritoryUnited States
CityVirtual, Online
Period6/1/217/4/21

All Science Journal Classification (ASJC) codes

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

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