Design of a planar inductor for DC-DC converter on flexible foil applications

Author

Kundrata, Jurica ; Baric, Adrijan

Author_Institution

Fac. of Electr. Eng. & Comput., Univ. of Zagreb, Zagreb, Croatia

fYear

2012

fDate

21-25 May 2012

Firstpage

54

Lastpage

59

Abstract

This paper presents the design of a planar inductor for a DC-DC converter for flexible foil applications. The design challenges related to the flexible foil structure and the DC-DC converter requirements are analysed. The main design challenges are due to the constraints on the inductor physical size, the proximity of a conductive plane to the inductor and very high operating frequency of the DC-DC converter. The methodology of the inductor design is based primarily on EM simulations of the inductor structure and on the evaluation of the simulation results in the context of the resulting lumped-element electrical model. The simulations are verified by measurements of the inductors processed on the FR4 substrate which presently emulates the flexible foil substrate.

Keywords

DC-DC power convertors; electromagnetic waves; lumped parameter networks; thick film inductors; DC-DC converter; EM simulations; FR4 substrate; conductive plane; flexible foil structure; inductor physical size; lumped-element electrical model; planar inductor; proximity; Capacitance; Context; Inductance; Inductors; Metals; Resonant frequency; Substrates; electromagnetic modelling; thick film inductor;

fLanguage

English

Publisher

ieee

Conference_Titel

MIPRO, 2012 Proceedings of the 35th International Convention

Conference_Location

Opatija

Print_ISBN

978-1-4673-2577-6

Type

conf

Filename

6240613