PCB integrated transformer composed with ferrite mosaics for LLC resonant converter

Author

Wang, Jianing ; Yang, Xu ; Niu, Huapeng ; Wang, Zhaoan ; Liu, Jinjun

Author_Institution

Sch. of Electr. Eng., Xi´´an Jiaotong Univ., Xi´´an, China

fYear

2009

fDate

20-24 Sept. 2009

Firstpage

1032

Lastpage

1038

Abstract

A mosaic structured core composed with ferrite mosaics for passive embedded substrate is described in this paper. The ferrite mosaic structured core is finished after cutting, laminating and assembling the ferrite mosaics which consist of a supporting plate and ferrite units with small size stuck on it. This structure is applied to a transformer design for 48 V to 12 V, 500 W LLC resonant bus converter with efficiency up to 97%. Analysis is conducted to show this structure working well and finite element analysis (FEA) is executed for simulation of the power losses in the new structure core. Experiment results show that gap control is a big challenge to mosaic structured transformers.

Keywords

mosaic structure; printed circuits; resonant invertors; transformers; LLC resonant converter; PCB integrated transformer; ferrite mosaics; finite element analysis; passive embedded substrate; PCB embedded circuit; ferrite mosaic; mosaic structured core; passive integration; passive substrate;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE

Conference_Location

San Jose, CA

Print_ISBN

978-1-4244-2893-9

Electronic_ISBN

978-1-4244-2893-9

Type

conf

DOI

10.1109/ECCE.2009.5316377

Filename

5316377