A novel soft switching isolated boost converter

Author

Xie, Shaojun ; Li, Fei

Author_Institution

Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut.

Volume

3

fYear

2005

fDate

6-10 March 2005

Firstpage

1375

Abstract

In low input voltage applications, the isolated boost converter is more attractive for its low input current ripple and low switches rating. But there is high surge voltage on switch under low load condition. RCD snubber is used in the conventional circuit. In this paper, a novel soft switching isolated boost converter is proposed. The LCD snubbers and coupled winding in boost inductor have been employed. The switches turn off at zero voltage and the surge voltage of switch is low. The converter has high efficiency and is suitable for low-to-high voltage conversion circuit. The principle of this converter is analyzed. Simulation and experimental results show that this novel converter is feasible. The efficiency of an 18-32 V input and 48 V output 300 W converter is 92% at 28 V input

Keywords

inductors; snubbers; switching convertors; windings; 18 to 32 V; 300 W; 48 V; 92 percent; LCD snubber; RCD snubber; boost inductor; coupled winding; low-to-high voltage conversion circuit; soft switching isolated boost converter; surge voltage; Capacitors; Filters; Inductors; Low voltage; Snubbers; Stress; Surges; Switches; Switching converters; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE

Conference_Location

Austin, TX

Print_ISBN

0-7803-8975-1

Type

conf

DOI

10.1109/APEC.2005.1453206

Filename

1453206