Input Small-Signal Characteristics of Selected DC–DC Switching Converters

Włodzimierz Janke, Maciej Bączek, Jarosław Kraśniewski and Marcin Walczak
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Włodzimierz Janke: Faculty of Electronics and Computer Science, Koszalin University of Technology, Sniadeckich 2, 75-453 Koszalin, Poland
Maciej Bączek: Faculty of Electronics and Computer Science, Koszalin University of Technology, Sniadeckich 2, 75-453 Koszalin, Poland
Jarosław Kraśniewski: Faculty of Electronics and Computer Science, Koszalin University of Technology, Sniadeckich 2, 75-453 Koszalin, Poland
Marcin Walczak: Faculty of Electronics and Computer Science, Koszalin University of Technology, Sniadeckich 2, 75-453 Koszalin, Poland

Energies, 2022, vol. 15, issue 5, 1-17

Abstract: The main goal of this study was to derive small-signal models of the input characteristics of buck, boost, and flyback converters working in continuous conduction mode (CCM) and discontinuous conduction mode (DCM). The models presented in the paper were derived using the separation of variables approach and included the parasitic resistances of all converter components. The paper features a discussion about the limitations of the model accuracy. The presented characteristics were obtained by calculation and verified by measurements. The input characteristics of converters are essential in the design of converters used in Power Factor Correction systems as well as in maximum power point tracking systems (MPPT).

Keywords: input small-signal characteristics; switch-mode converter: flyback; buck and boost converters; continuous conduction mode (CCM); discontinuous conduction mode (DCM); separation of variables (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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