Efficient Control of SEPIC DC-DC Converter with Dynamic Switching Frequency

  • Samuel Žák
  • Peter Ševčík
  • Martin Revák
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 765)


The majority of present DC-DC converters operate at a fixed frequency with the only exception at low output load. This approach allows simple suppression of switching noise from the output voltage. For some applications, noisy supply voltage is not the essential problem. The total operating time is more important for many devices powered from a battery or energy harvesting. This paper observes efficiency of DC-DC converter which allows dynamic change of switching frequency under variable operating conditions typical for renewable sources in handheld scale. Experimentally evaluated converter, composed of discrete components, uses SEPIC topology to allow for seamless step-up or step-down transition. Gathered data, shows important features for the development of the new control model of DC power management systems.


DC-DC converter SEPIC topology Energy harvesting Power efficiency 


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Technical Cybernetics, Faculty of Management Science and InformaticsUniversity of ŽilinaŽilinaSlovakia

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