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Large-signal input characteristics of selected DC–DC switching converters, Part II. Discontinuous conduction mode

Janke Włodzimierz, Bączek Maciej, Kraśniewski Jarosław, Walczak Marcin

Archives of Electrical Engineering

2020

Vol. 69, nr 4

801--813

Large-signal input characteristics of three DC–DC converter types: buck, boost and flyback working in the discontinuous conduction mode (DCM), obtained by precise large signal PSpice simulations, calculations based on averaged models and measurements are presented. The parasitic resistances of the converter components are included in the simulations. The specific features of the input characteristics in the DCM and the differences between the continuous conduction mode (CCM) and DCM are discussed.

Large-signal input characteristics of selected DC–DC switching converters. Part I. Continuous conduction mode

Janke Włodzimierz, Bączek Maciej, Kraśniewski Jarosław, Walczak Marcin

Archives of Electrical Engineering

2020

Vol. 69, nr 3

739--750

Large-signal input characteristics of three DC–DC converter types: buck, boost and flyback working in the continuous conduction mode (CCM), obtained by simulations and measurements are investigated. The results of investigations are presented in the form of the analytical formulas and the exemplary results of the measurements and two forms of simulations: based on the full description of the converter components and on the averaged models. The parasitic resistances of the converter components are included in the simulations and their influence on the simulation results is discussed.

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

Janke W., Walczak M.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2016

Vol. 64, nr 2

265--270

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.