Analysis of a zero voltage transition boost converter using a soft switching auxiliary circuit with reduced conduction losses

Author

Jain, Nikhil ; Jain, Praveen ; Joós, Géza

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1799

Abstract

This paper presents a zero-voltage-transition (ZVT) boost converter using a soft switching auxiliary circuit. The improvement over existing topologies lies in the structure and position of the auxiliary circuit capacitors and the subsequent reduction in the main switch resonant current. This converter has the following features: (1) soft switching of the main switch and boost diode under all operating conditions; (2) reduced auxiliary circuit losses due to soft switching of the auxiliary switch; (3) feedforward of a part of the auxiliary circuit energy to the output. The operation of this converter is analyzed and characteristic curves are presented, which help in the design process. Experimental results from a 250 W, 127 Volt input laboratory prototype switching at 100 kHz are shown which verify the advantages of this topology

Keywords

DC-DC power convertors; feedforward; losses; switching circuits; 100 kHz; 127 V; 250 W; auxiliary circuit capacitors; boost diode; feedforward; main switch resonant current reduction; operating conditions; reduced auxiliary circuit losses; reduced conduction losses; soft switching auxiliary circuit; zero voltage transition boost converter; Circuit topology; Diodes; Process design; RLC circuits; Resonance; Switched capacitor circuits; Switches; Switching circuits; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954383

Filename

954383