Small-signal input characteristics of step-down and step-up converters in various conduction modes

Bulletin of the Polish Academy of Sciences. Technical Sciences

M. WalczakKoszalin University of Technology, 2 ?niadeckich St., 75-453 Koszalin, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  W. JankeCorresponding authorKoszalin University of Technology, 2 ?niadeckich St., 75-453 Koszalin, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Koszalin University of Technology, 2 ?niadeckich St., 75-453 Koszalin, Poland

关键词: Keywords: pulse converters;    BUCK;    BOOST;    small-signal models;    input characteristics;   

DOI  :  10.1515/bpasts-2016-0029

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

Small-signal input characteristics of BUCK and BOOST DC-DC power converters in continuous conduction and discontinuous conduction mode have been presented. Special attention is paid to characteristics in discontinuous conduction mode. The input characteristics are derived from the general form of averaged models of converters. The frequency dependence of input admittance and other input characteristics has been observed in a relatively low-frequency range. The analytical formulas derived in the paper are illustrated by numerical calculations and verified by experiments with a laboratory model of BOOST converter. A satisfying level of conformity of calculations and measurements has been obtained.

【 授权许可】

Unknown