A unified method for optimal buck converter output capacitor design

Author

DeNardo, A. ; Femia, N. ; Petrone, G. ; Spagnuolo, G.

Author_Institution

Univ. of Salerno, Salerno

fYear

2008

fDate

June 30 2008-July 2 2008

Firstpage

56

Lastpage

61

Abstract

This paper presents a novel method for design of output filter of low-voltage/high-current buck dc-dc switching regulators subject to load-transients. The method is based on use of acceptability boundary curves (ABC), which provide contour of regions in the space of parameters corresponding to commercial components which ensure acceptable output voltage ripple and load-transient surge. The new approach allows to figure out most convenient design solutions by using inductor current ripple as an optimization parameter. Examples regarding buck converters for point-of-load applications are discussed to highlight flexibility and reliability of method.

Keywords

DC-DC power convertors; capacitor switching; logic circuits; network synthesis; power supplies to apparatus; surges; acceptability boundary curves; inductor current ripple; load-transient surge; low-voltage/high-current buck dc-dc switching regulators; optimal buck converter output capacitor design; point-of-load applications; Buck converters; Capacitance; Capacitors; Circuits; Digital control; Filters; Inductance; Inductors; Paramagnetic resonance; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2008. ISIE 2008. IEEE International Symposium on

Conference_Location

Cambridge

Print_ISBN

978-1-4244-1665-3

Electronic_ISBN

978-1-4244-1666-0

Type

conf

DOI

10.1109/ISIE.2008.4677204

Filename

4677204