A review of planar magnetic techniques and technologies

Quinn, C.; Rinne, K.; O’Donnell, Terence; Duffy, Maeve; Mathúna, Cian Ó

doi:10.1109/apec.2001.912514

Cited by 77 publications

(15 citation statements)

References 27 publications

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“…the Steinmetz parameters change under dc bias condition. When a core operates under dc bias condition, the core loss still can be described using the Steinmetz equation (12) or the IGSE (13). However, the Steinmetz parameters must be adjusted according to the dc bias present.…”

Section: ) T 3~t4mentioning

confidence: 99%

Analysis and Design of Fully Integrated Planar Magnetics for Primary–Parallel Isolated Boost Converter

Ouyang

Sen

Thomsen

et al. 2013

IEEE Trans. Ind. Electron.

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Section: ) T 3~t4mentioning

confidence: 99%

Analysis and Design of Fully Integrated Planar Magnetics for Primary–Parallel Isolated Boost Converter

Ouyang

Sen

Thomsen

et al. 2013

IEEE Trans. Ind. Electron.

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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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“…Ph: Hysteresis loss Pc: Eddy Current loss Pe: Residual magnetism loss Kh: Hysteresis loss factor Kc: Eddy Current loss factor Ke: Residual magnetism loss factor Cm,x,y: Characterization factors Figure 2 describes the structure of transformer for resonant converter [1][2][3][4][5] . In Figure 2, (a) shows a transformer whose operating frequency is 100kHz.…”

Section: Specificationsmentioning

confidence: 99%

Applicated on a loss of hybrid transformer winding for multi-output high frequency (300W) LLC resonance converters

Choi¹,

Chung²,

Li³

2015

International Journal of Innovative Research in Electrical, Ele

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With a growing concern over environmental issues, smaller and more energy efficient electronic devices continue to draw attention. Usually, high frequency has more advantages in making switching power smaller. A number of suppliers have already launched single-output power (single or double-digit W) which can be operated in high frequency (higher than 500kHz.) Despite increasing demand for multi-output high-capacity power, it is not easy to operate this power in high frequency. Reducing the loss of both switching components and transformer winding holds great significance in high frequency operation. This abstract is written to suggest a new transformer structure for multioutput (300W) high-frequency (500kHz) operation as well as present mathematical analysis and test results on the loss of transformer winding operated in high frequency. This suggestion can lead to approximately 40% of transformer size reduction compared to the existing one operated in 100kHz

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A review of planar magnetic techniques and technologies

Cited by 77 publications

References 27 publications

Analysis and Design of Fully Integrated Planar Magnetics for Primary–Parallel Isolated Boost Converter

Analysis and Design of Fully Integrated Planar Magnetics for Primary–Parallel Isolated Boost Converter

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

Applicated on a loss of hybrid transformer winding for multi-output high frequency (300W) LLC resonance converters

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