Analysis of Output Voltage Ripple of Buck DC-DC converter and its design

Author

Shulin, Liu ; Li Yan ; Li, Liu

Author_Institution

Xi´´an Univ. of Sci.&Technol., Xi´´an, China

Volume

2

fYear

2009

fDate

19-20 Dec. 2009

Firstpage

112

Lastpage

115

Abstract

The operating region of the converter is divided into four parts on the input-voltage versus load plane according to the inductance. The Maximum Output Voltage Ripple (MOVR) in each operating region is analyzed, respectively. It is pointed out that the minimum inductance to guarantee the lowest Output Voltage Ripple (OVR) is the critical inductance of CCM and DCM under the highest input voltage and heaviest load. The design method of inductance and capacitance is proposed according to the requirement of intrinsic safety and the desired OVR level within the total operating range. The analysis and feasibility of the proposed method are verified by the experiment results.

Keywords

DC-DC power convertors; integrated circuit design; buck DC-DC converter; output voltage ripple; Buck converters; Capacitance; DC-DC power converters; Inductance; Inductors; Intelligent transportation systems; Power electronics; Power supplies; Safety; Voltage; Buck DC-DC converter; analysis; design; output voltage ripple;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Intelligent Transportation System (PEITS), 2009 2nd International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4244-4544-8

Type

conf

DOI

10.1109/PEITS.2009.5406943

Filename

5406943