TY - JOUR
T1 - Design exploration of package-embedded inductors for high-efficiency integrated voltage regulators
AU - Mueller, Sebastian
AU - Bellaredj, Mohamed Lamine Faycal
AU - Davis, Anto Kavungal
AU - Kohl, Paul A.
AU - Swaminathan, Madhavan
N1 - Funding Information:
Manuscript received December 17, 2017; revised April 22, 2018; accepted June 19, 2018. Date of publication July 25, 2018; date of current version January 17, 2019. This work was supported by the Power Delivery for Electronic Systems Consortium at the Georgia Institute of Technology. Recommended for publication by Associate Editor E. Liu upon evaluation of reviewers’ comments. (Corresponding author: Sebastian Müller.) S. Müller was with the Georgia Institute of Technology, Atlanta, GA 30332 USA. He is now with the Department of Sensor Technology, BMW, 80788 Munich, Germany (e-mail: [email protected]).
Publisher Copyright:
© 2011-2012 IEEE.
PY - 2019/1
Y1 - 2019/1
N2 - 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.
AB - 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.
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U2 - 10.1109/TCPMT.2018.2856882
DO - 10.1109/TCPMT.2018.2856882
M3 - Article
AN - SCOPUS:85050583594
SN - 2156-3950
VL - 9
SP - 96
EP - 106
JO - IEEE Transactions on Components, Packaging and Manufacturing Technology
JF - IEEE Transactions on Components, Packaging and Manufacturing Technology
IS - 1
M1 - 8419786
ER -