Analysis of Output Voltage of Switching Frequency Modulated DC-DC Converter Operating in Discontinuous Conduction Mode
Proceedings of the IEEE International Symposium on Industrial Electronics (ISIE 2010)
2010
Deniss Stepins
In this paper analysis of output voltage ripples of a switching frequency modulated (SFM) buck converter operating in discontinuous conduction mode (DCM) is performed. The ripples are analyzed in both time and frequency domains by the use of theoretical derivations and computer simulations.
Significant increase in output voltage ripples under DCM is
observed after using periodic SFM. Low frequency variations at
modulation frequency are considered as the most problematic.
Cause of the problem is revealed. Influence of main nonidealities
of the converter and modulation parameters on the
output voltage ripples is analyzed. Experimental verification is
also performed to confirm the theoretical evaluations and
simulation results. The analysis can give useful information
when designing a SFM power converter.
Keywords
power converters, frequency modulation, voltage ripples
DOI
10.1109/ISIE.2010.5637199
Hyperlink
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5637199
Stepins, D. Analysis of Output Voltage of Switching Frequency Modulated DC-DC Converter Operating in Discontinuous Conduction Mode. In: Proceedings of the IEEE International Symposium on Industrial Electronics (ISIE 2010), Italy, Bari, 4-7 July, 2010. Bari: IEEE Industrial Electronics Society, 2010, pp.670-675. ISBN 978-1-4244-6390-9. Available from: doi:10.1109/ISIE.2010.5637199
Publication language
English (en)