Investigation of the output current and its applications for the multiphase buck converter

Author

Zhang, Saijun ; Yu, Xiaoyan ; Qi, Dai

fYear

2012

fDate

Sept. 30 2012-Oct. 4 2012

Firstpage

1

Lastpage

5

Abstract

Quantitative analysis of the output current for the multiphase buck converter facilitates the optimal design of the converter. This paper quantifies the output current and its ripple cancellation effect. A universal formula has been derived to express the output current of multiphase buck converter with any number of phases operating at both continuous conduction mode (CCM) and discontinuous conduction mode (DCM). Therefore, output capacitor ripple current can be calculated and the suitable capacitor can be selected based on that. Major practical factors affecting the output current are also discussed. Simulation and experiment validate the proposed methodology to be used as an accurate design tool.

Keywords

capacitors; power convertors; CCM; DCM; continuous conduction mode; discontinuous conduction mode; multiphase buck converter; output capacitor ripple current; output current; quantitative analysis; Capacitors; Equations; Inductance; Inductors; Integrated circuits; Statistical analysis; Switches; Capacitor current ripple; current ripple cancellation effect; discontinuous conduction mode; multiphase converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference (INTELEC), 2012 IEEE 34th International

Conference_Location

Scottsdale, AZ

ISSN

2158-5210

Print_ISBN

978-1-4673-0999-8

Electronic_ISBN

2158-5210

Type

conf

DOI

10.1109/INTLEC.2012.6374536

Filename

6374536