Design consideration of two flat transformers in a low-profile LLC resonant converter

Sihun Yang, Seiya Abe, Masahito Shoyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper presents the design consideration of a low-profile LLC resonant converter using tw,o flat transformers. The trend toward high power density, high efficiency, and low profile in power supplies has exposed a number of limitations in the use of magnetic component structures. The LLC resonant converter can be operated at a high switching frequency with high efficiency because the switching loss is reduced by soft-switching. However, flat transformer loss causes problems at a high switching frequency. As a result, temperature of flat transformers becomes high. Therefore, it is necessary to reduce the transformer temperature by analyzing the loss. In this proposed converter, flat transformer is integrated into advanced power conversion application systems. Low-profile power module of profile of about 14mm is achieved. Temperature inside of transformer repressed to 61C and an overall efficiency of about 97.8% was obtained.

Original languageEnglish
Title of host publication8th International Conference on Power Electronics - ECCE Asia
Subtitle of host publication"Green World with Power Electronics", ICPE 2011-ECCE Asia
Pages854-859
Number of pages6
DOIs
Publication statusPublished - Aug 31 2011
Event8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia - Jeju, Korea, Republic of
Duration: May 30 2011Jun 3 2011

Publication series

Name8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia

Other

Other8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia
CountryKorea, Republic of
CityJeju
Period5/30/116/3/11

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Yang, S., Abe, S., & Shoyama, M. (2011). Design consideration of two flat transformers in a low-profile LLC resonant converter. In 8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia (pp. 854-859). [5944626] (8th International Conference on Power Electronics - ECCE Asia: "Green World with Power Electronics", ICPE 2011-ECCE Asia). https://doi.org/10.1109/ICPE.2011.5944626