Implementation of a 2-in-1 transformer combined with a PFC inductor and an LLC transformer for PSUs

Author

Kang, C.-H. ; Noh, Y.-J. ; Kwon, J.-I. ; Kim, E.-S. ; Won, J.-S. ; Kim, Do-Hyeon ; Lee, Yi-Shu

Author_Institution

Electr. & Electron. Eng., Jeonju Univ., Jeonju, South Korea

fYear

2014

fDate

16-20 March 2014

Firstpage

3385

Lastpage

3391

Abstract

In this paper, Implementation of an integrated 2-in-1 transformer applicable to power supply units (PSUs) for a 120W LED TV is presented. The transformer is comprised a PFC inductor and an LLC resonant transformer, each of which is placed and integrated on an E-I-E type magnetic core. Integrated transformers with two different air gap topologies (i.e., the side gap and center gap topologies) are considered in the design phase and their performances are analyzed through various approaches. Applicability of the proposed integrated transformer to PSUs for a 120W LED TV is found from the viewpoint of integration of different magnetic components into one core, which leads to light weight, low cost, high power density, and so on.

Keywords

LED displays; inductors; magnetic cores; power factor correction; power supplies to apparatus; television displays; transformers; E-I-E type magnetic core; LED TV; LLC resonant transformer; PFC inductor; PSU; air gap topology; center gap topology; integrated 2-in-1 transformer; power 120 W; power density; power supply unit; side gap topology; Couplings; Inductors; Magnetic circuits; Magnetic cores; Magnetic flux; Magnetic resonance; Power transformer insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE

Conference_Location

Fort Worth, TX

Type

conf

DOI

10.1109/APEC.2014.6803793

Filename

6803793