A New Non-Isolated Full Bridge Topology for Low Voltage High Current VRM Applications

Author

Ye, Sheng ; Eberle, Wilson ; Yang, Zhihua ; Liu, Yan-Fei

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont.

fYear

2005

fDate

16-16 June 2005

Firstpage

389

Lastpage

393

Abstract

In this paper a new non-isolated full bridge topology is introduced. The primary side of this topology is a full bridge; however, the input voltage ground of the conventional full bridge is connected directly to the positive point of the output and not connected to the input ground. In this arrangement, the input current flows directly to the load without going through the transformer. The secondary side rectifier stage is a current doubler. The primary side can operate in either phase shift soft switching mode or hard switching mode. The advantages of this topology, include soft switching and reduced conduction loss. A 1.41 by 1.41 inch power module has been built and tested to verify the analysis

Keywords

bridge circuits; network topology; phase shifters; power transformers; rectifying circuits; switching convertors; voltage regulators; VRM applications; current doubler; hard switching mode; nonisolated full bridge topology; phase shift soft switching mode; power module; secondary side rectifier stage; transformers; Application software; Bridge circuits; Circuit testing; Circuit topology; Low voltage; MOSFETs; Multichip modules; Rectifiers; Switching frequency; Switching loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th

Conference_Location

Recife

Print_ISBN

0-7803-9033-4

Type

conf

DOI

10.1109/PESC.2005.1581653

Filename

1581653