Equivalent circuits for averaged description of DC-DC switch-mode power converters based on separation of variables approach

Bulletin of the Polish Academy of Sciences. Technical Sciences

W. JankeCorresponding authorDivision of Electronic Systems, Technical University of Koszalin, 2 ?niadeckich St. 75-453 Koszalin, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Division of Electronic Systems, Technical University of Koszalin, 2 ?niadeckich St. 75-453 Koszalin, Poland

关键词: Keywords : switch-mode power converters;    BUCK;    BOOST;    averaged models;    equivalent circuits;   

DOI  :  10.2478/bpasts-2013-0076

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 】

Large-signal and small-signal averaged models of basic switch-mode DC-DC power converters: BUCK (step-down) and BOOST (step-up) are presented. Models are derived with the separation of variables approach and have the form of equivalent circuits, suitable for a circuit simulation. Apart from equivalent circuits, small-signal transmittances of converters for CCM and DCM modes are discussed. Parasitic resistances of all components of converters are taken into account. A few examples of simulations and measurement results of selected converter characteristics are also presented. It is shown, that neglecting parasitic resistances (often met in works of other authors) may lead to serious errors in an averaged description of converters.

【 授权许可】

Unknown