Analysis and implementation of a DC-DC step-down converter for low output-voltage and high output-current applications

Author

Hsieh, Chih-Hsien ; Liang, Tsorng-Juu ; Yang, Lung-Sheng ; Lin, Ray-Lee ; Chen, Kai-Hui

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2010

fDate

May 30 2010-June 2 2010

Firstpage

3697

Lastpage

3700

Abstract

A novel DC-DC step-down converter with interleaved control for low output-voltage and high output-current applications is presented in this paper. The voltage gain of the proposed converter is half of the conventional buck converter with reduced current stresses on power devices and low output-current ripple are reduced. The operating principle, steady-state analysis, and small-signal model analysis are discussed in detailed. Finally, a prototype circuit of the proposed converter with 12-V input voltage, 1.5-V/40-A output is implemented to verify the performance.

Keywords

DC-DC power convertors; network analysis; DC-DC step down converter; current 40 A; high output current application; low output voltage application; small signal model analysis; steady state analysis; voltage 1.5 V; voltage 12 V; voltage gain; Buck converters; Capacitors; DC-DC power converters; Equivalent circuits; Inductors; Power supplies; Pulse width modulation; Stress; Switches; Voltage; buck converter; interleaved control; low output-voltage and high output-current;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on

Conference_Location

Paris

Print_ISBN

978-1-4244-5308-5

Electronic_ISBN

978-1-4244-5309-2

Type

conf

DOI

10.1109/ISCAS.2010.5537764

Filename

5537764