Planar magnetic component technology-a review

Quirke, Michael; Barrett, J.J.; Hayes, Michael

doi:10.1109/33.180055

Cited by 45 publications

(15 citation statements)

References 20 publications

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“…We define the dc resistance of a copper layer with thickness h, width w, and length d, as R dc equals d wσh ; and the inductance of a spacing with thickness h, width w, and length d, as L dc equals µdh w . Defining ∆ = h/δ, then 2 The LFL and HFL values can be utilized in further simplified MLM modeling (but still capture a major amount of information, especially the loss) as illustrated in Fig. 6: if h δ for the frequency range of interest, HFL element values should be used; if h δ, LFL element values should be used.…”

Section: Frequency Dependent Impedance Valuesmentioning

confidence: 99%

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Applicability and limitations of an M2Spice-assisted “planar-magnetics-in-the-circuit” simulation approach

Gunter

Chen

Pavlick

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Planar magnetics design for power electronics naturally involves many tradeoffs, especially in the selection of the core size, winding structure and printed circuit board stackup. "Magnetics-in-the-circuit" SPICE simulations can facilitate quick magnetics design evaluation and iteration. This paper introduces and evaluates a "planar-magnetics-in-the-circuit" simulation approach with an M2Spice software tool, which has been developed based on an earlier presented Modular Layer Model (MLM) analysis approach [1]. M2Spice converts the magnetics geometry into a SPICE netlist, which can be simulated with other circuit elements in a power converter under a unified setup. This paper presents an analysis of the applicability and limitations of this approach across wide frequency bands, followed by an evaluation of the accuracy of the SPICE simulation results (by comparing the simulation results to finite-element-modeling (FEM) results and experimental measurements). Multiple planar magnetics prototypes are designed, modeled, simulated, built, and measured, with results reported and discussed.

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Section: Frequency Dependent Impedance Valuesmentioning

confidence: 99%

“…P LANAR magnetics offer low profile, good thermal characteristics, high power density, high repeatability and the ease of realizing complex winding structures [2]- [4]. As frequency increases, accurate modeling of planar magnetics becomes both important and increasingly challenging, mostly due to the impact of skin-and proximity-effects.…”

Section: Introductionmentioning

confidence: 99%

Applicability and limitations of an M2Spice-assisted “planar-magnetics-in-the-circuit” simulation approach

Gunter

Chen

Pavlick

et al. 2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…Magnetics with planar structures have been studied extensively since the 1960's in an effort to push higher the limits of the power-frequency product by reducing high frequency induced effects such as eddy current losses while improving thermal management [1]- [4].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and modeling of a planar magnetic structure with directly etched windings

Prasai

Odendaal

2009

2009 IEEE Energy Conversion Congress and Exposition

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Methodology for directly growing three-dimensional windings on a planar, insulated ferromagnetic core through the process of electroplating and etching is presented in this paper. Designs employing high frequency inductors and transformers built in such a fashion offer tight control over parasitics from sample to sample while achieving higher power density and lower profile compared to other popular planar structures. Further, such structures are believed to be suitable as fundamental building blocks for magnetics designs with standardized cores and pre-electroplated, standardized winding patterns. They can be surface mounted on a PCB and configured by the enduser to meet his or her design specifications. To facilitate rapid design evaluation and achieve shorter design cycles, reducedorder analytical modeling based on Schwarz-Christoffel mapping and method of images for estimating parasitics of the structure is presented. The results of the models are compared against finite element modeling and experimental measurements, and are found to be acceptably accurate.

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“…Planar magnetics refer to high-frequency transformers and inductors exhibiting advantages in electrical, thermal and mechanical aspects [2].…”

Section: Introductionmentioning

confidence: 99%

Modeling and design optimization of planar power transformer for aerospace application

Zhang

Tie-jun

Kutkut

et al. 2009

Proceedings of the IEEE 2009 National Aerospace &Amp; Electronics Conference (NAECON)

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A new low profile, light weight, high power density and high efficiency planar transformer for aerospace application is presented. In this paper, a systematic optimizing procedure is illustrated with a detailed design of a flyback transformer. We use Double 2D Finite Element Method (FEM) [1] modeling strategies to calculate the power loss and to optimize the design. The strategies, interleaving and horizontal and vertical parallel windings for reducing the winding loss are discussed. A 6-layer PCB layout is shown to validate the design. 1

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Planar magnetic component technology-a review

Cited by 45 publications

References 20 publications

Applicability and limitations of an M2Spice-assisted “planar-magnetics-in-the-circuit” simulation approach

Applicability and limitations of an M2Spice-assisted “planar-magnetics-in-the-circuit” simulation approach

Fabrication and modeling of a planar magnetic structure with directly etched windings

Modeling and design optimization of planar power transformer for aerospace application

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