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Published in:
2019 | OriginalPaper | Chapter
Efficient Control of SEPIC DC-DC Converter with Dynamic Switching Frequency
Authors : Samuel Žák, Peter Ševčík, Martin Revák
Published in: Cybernetics and Algorithms in Intelligent Systems
Publisher: Springer International Publishing
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Abstract
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.