Simplification of transfer function in switching converter with general load impedance

Author

Shoyama, Masahito ; Hamafuku, Yasuhiro ; Matsuzaki, Nobuhiro ; Ninomiya, Tamotsu

Author_Institution

Dept. of Electron., Kyushu Univ., Fukuoka, Japan

fYear

1995

fDate

21-24 Feb 1995

Firstpage

155

Abstract

Conventionally the small-signal characteristics of switching DC-DC converters have usually been analyzed on the assumption that the load is a pure resistance mainly for analytical simplicity. However, in many cases an actual load is not necessarily a pure resistance. This paper presents a simplified transfer function of duty ratio to output voltage of the forward switching converter with a general load impedance by introducing some assumptions which are usually satisfied. The validity of the simplified transfer function is confirmed by comparing computer-calculated results with experimental data. This approach is applied to some other switching converter topologies

Keywords

DC-DC power convertors; digital simulation; electric impedance; load (electric); power engineering computing; simulation; switching circuits; transfer functions; boost converter; buck boost converter; computer-calculated results; duty ratio; forward switching converter; load impedance; output voltage; pure resistance load; switching DC-DC converters; switching converter; transfer function simplification; Capacitors; Circuit topology; DC-DC power converters; Diodes; Equations; Equivalent circuits; Impedance; Switching converters; Transfer functions; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1995., Proceedings of 1995 International Conference on

Print_ISBN

0-7803-2423-4

Type

conf

DOI

10.1109/PEDS.1995.404930

Filename

404930