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Title: Finite element modeling of nanoscale-enabled microinductors for power electronics

Abstract

Here, this paper focuses on the finite element modeling of toroidal microinductors, employing first-of-its-kind nanocomposite magnetic core material and superparamagnetic iron nanoparticles covalently cross-linked in an epoxy network. Energy loss mechanisms in existing inductor core materials are covered as well as discussions on how this novel core material eliminates them providing a path toward realizing these low form factor devices. Designs for both a 2 μH output and a 500 nH input microinductor are created via the model for a high-performance buck converter. Both modeled inductors have 50 wire turns, less than 1 cm 3 form factors, less than 1 Ω AC resistance, and quality factors, Q’s, of 27 at 1 MHz. In addition, the output microinductor is calculated to have an average output power of 7 W and a power density of 3.9 kW/in 3 by modeling with the 1st generation iron nanocomposite core material.

Authors:
 [1];  [2];  [3]; ORCiD logo [3]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). MEMS Technology Dept.
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Nanoscale Sciences
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1467392
Report Number(s):
SAND-2018-4159J
Journal ID: ISSN 0884-2914; applab; 662774
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Research
Additional Journal Information:
Journal Volume: 33; Journal Issue: 15; Journal ID: ISSN 0884-2914
Publisher:
Materials Research Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Langlois, Eric D., Monson, Todd C., Huber, Dale L., and Watt, John. Finite element modeling of nanoscale-enabled microinductors for power electronics. United States: N. p., 2018. Web. doi:10.1557/jmr.2018.236.
Langlois, Eric D., Monson, Todd C., Huber, Dale L., & Watt, John. Finite element modeling of nanoscale-enabled microinductors for power electronics. United States. doi:10.1557/jmr.2018.236.
Langlois, Eric D., Monson, Todd C., Huber, Dale L., and Watt, John. Wed . "Finite element modeling of nanoscale-enabled microinductors for power electronics". United States. doi:10.1557/jmr.2018.236. https://www.osti.gov/servlets/purl/1467392.
@article{osti_1467392,
title = {Finite element modeling of nanoscale-enabled microinductors for power electronics},
author = {Langlois, Eric D. and Monson, Todd C. and Huber, Dale L. and Watt, John},
abstractNote = {Here, this paper focuses on the finite element modeling of toroidal microinductors, employing first-of-its-kind nanocomposite magnetic core material and superparamagnetic iron nanoparticles covalently cross-linked in an epoxy network. Energy loss mechanisms in existing inductor core materials are covered as well as discussions on how this novel core material eliminates them providing a path toward realizing these low form factor devices. Designs for both a 2 μH output and a 500 nH input microinductor are created via the model for a high-performance buck converter. Both modeled inductors have 50 wire turns, less than 1 cm3 form factors, less than 1 Ω AC resistance, and quality factors, Q’s, of 27 at 1 MHz. In addition, the output microinductor is calculated to have an average output power of 7 W and a power density of 3.9 kW/in3 by modeling with the 1st generation iron nanocomposite core material.},
doi = {10.1557/jmr.2018.236},
journal = {Journal of Materials Research},
number = 15,
volume = 33,
place = {United States},
year = {2018},
month = {8}
}

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Works referenced in this record:

FDTD and experimental investigation of EMI from stacked-card PCB configurations
journal, January 2001

  • Hockanson, D. M.; Drewniak, J. L.
  • IEEE Transactions on Electromagnetic Compatibility, Vol. 43, Issue 1
  • DOI: 10.1109/15.917923

Magnetic anisotropy of epitaxial cobalt ferrite thin films
journal, January 1999


Gram scale synthesis of Fe/Fe x O y core–shell nanoparticles and their incorporation into matrix-free superparamagnetic nanocomposites
journal, May 2018

  • Watt, John; Bleier, Grant C.; Romero, Zachary W.
  • Journal of Materials Research, Vol. 33, Issue 15
  • DOI: 10.1557/jmr.2018.139

Complete Modeling of Toroidal Inductors for High Power RF Applications
journal, November 2012


Review of Integrated Magnetics for Power Supply on Chip (PwrSoC)
journal, November 2012


Finite element modeling of an electrically variable inductor
journal, January 1999

  • Bi, Y.; Jiles, D. C.
  • IEEE Transactions on Magnetics, Vol. 35, Issue 5
  • DOI: 10.1109/20.800575

Complex representation in nonlinear time harmonic eddy current problems
journal, January 1998

  • Paoli, G.; Biro, O.; Buchgraber, G.
  • IEEE Transactions on Magnetics, Vol. 34, Issue 5
  • DOI: 10.1109/20.717607

Optimized Toroidal Inductors Versus Planar Spiral Inductors in Multilayered Technologies
journal, February 2017

  • Lopez-Villegas, J. M.; Vidal, N.; del Alamo, Jesus A.
  • IEEE Transactions on Microwave Theory and Techniques, Vol. 65, Issue 2
  • DOI: 10.1109/TMTT.2016.2645571

Nonlinear Modeling of E-Type Ferrite Inductors Using Finite Element Analysis in 2D
journal, July 2014


Magnetics on Silicon: An Enabling Technology for Power Supply on Chip
journal, May 2005

  • Mathuna, S. C. O.; O'Donnell, T.; Wang, N.
  • IEEE Transactions on Power Electronics, Vol. 20, Issue 3
  • DOI: 10.1109/TPEL.2005.846537