Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 4
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

Averaged models: an AC large signal, DC and AC small signals of a current-controlled buck converter are described. Only peak current mode control of a converter working in the continuous conduction mode (CCM) is considered. The model derivation differs from the typical approaches presented in the literature and doesn’t refer to the multi-loop concept of a current controlled converter. The separation of the variables method is used in the model derivation. The resulting models are presented in the form of an equation set and equivalent circuits. The calculations based on the presented models are verified by measurements and full-wave PSpice simulations.

Go to article

Authors and Affiliations

Włodzimierz Janke
Maciej Bączek
Jarosław Kraśniewski
Download PDF Download RIS Download Bibtex

Abstract

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 theDCMand the differences between the continuous conduction mode (CCM) and DCM are discussed.

Go to article

Authors and Affiliations

Włodzimierz Janke
ORCID: ORCID
Maciej Bączek
ORCID: ORCID
Jarosław Kraśniewski
ORCID: ORCID
Marcin Walczak
Download PDF Download RIS Download Bibtex

Abstract

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.

Go to article

Authors and Affiliations

Włodzimierz Janke
ORCID: ORCID
Maciej Bączek
ORCID: ORCID
Jarosław Kraśniewski
ORCID: ORCID
Marcin Walczak
Download PDF Download RIS Download Bibtex

Abstract

Small-signal transmittances of the power stage of a flyback converter in continuous conduction mode are derived on the averaged model obtained by the separation of variables approach. The precise knowledge of these transmittances is necessary in the design process of the converter control circuit. Apart from mathematical formulas for transmittances, the numerical calculations of the frequency dependencies of the transmittances for the assumed set of the converter parameters are presented with the parasitic resistances of components taken into account. The results of the calculations are compared with the measurements performed on the laboratory model of the converter and a good consistency is observed. It is concluded, that the results of the paper may be useful in the designing process of a control circuit of the flyback converter.
Go to article

Authors and Affiliations

Maciej Bączek
1
ORCID: ORCID
Włodzimierz Janke
1
ORCID: ORCID
Jarosław Kraśniewski
1
ORCID: ORCID

  1. Department of Electronics and Computer Science, Koszalin University of Technology 2 Sniadeckich Street, 75-453 Koszalin, Poland

This page uses 'cookies'. Learn more