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Voltage Spikes in Integrated CMOS Buck DC-DC Converters: Analysis for Resonant and Hard Switching Topologies

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dc.contributor.authorRocha, José F. da
dc.contributor.authorSantos, Marcelino B. dos
dc.contributor.authorCosta, J. M. Dores
dc.date.accessioned2024-09-18T14:27:54Z
dc.date.available2024-09-18T14:27:54Z
dc.date.issued2014
dc.description.abstractIn an integrated DC-DC converter, voltage spikes are generated during the commutation of the power switches and they may cause the device malfunction if its magnitude is excessive. That occurs when, targeting high efficiency, very fast switching is implemented in a low voltage CMOS process, with higher impact when the converter output current is high. These conditions that cause spikes of significant magnitude, in the order of Volts, are common in modern DC-DC converters for portable equipment powered by batteries. Magnitude limitation of voltage spikes in hard switching converters is a hot research topic and the known solutions are surveyed here. Resonant switches topologies are frequently mentioned as an alternative to overcome voltage spikes in a DC-DC converter, but generally this solution is dismissed in integrated implementations. This paper investigates if the resonant topologies are an effective solution to overcome voltage spikes during the switches commutation in a buck converter. Two buck DC-DC converters using resonant switches are analyzed, namely a QR-ZCS topology and a QSW- ZVS topology. The analysis proceeds in two steps that can be easily applied to other resonant converters. Results show that resonant DC-DC converters also generate voltage spikes which magnitude is sometimes higher than that generated in a hard switching converter, and is superimposed to the overvoltage occurring in the resonant phase. This is an important result since resonant, or soft switching, converters are occasionally mistakenly mentioned as free of voltage spikes.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doihttps://doi.org/10.1016/j.protcy.2014.10.243pt_PT
dc.identifier.issn2212-0173
dc.identifier.urihttp://hdl.handle.net/10400.26/52100
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S2212017314004794pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectBuck DC-DC converterpt_PT
dc.subjectResonant switchpt_PT
dc.subjectHard switchingpt_PT
dc.subjectIntegrated CMOS switchpt_PT
dc.subjectVoltage spikept_PT
dc.subjectSwitching noisept_PT
dc.subjectParasitic inductancept_PT
dc.subjectGate driverpt_PT
dc.subjectEnergy Efficiencypt_PT
dc.titleVoltage Spikes in Integrated CMOS Buck DC-DC Converters: Analysis for Resonant and Hard Switching Topologiespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage334pt_PT
oaire.citation.startPage327pt_PT
oaire.citation.titleProcedia Technologypt_PT
oaire.citation.volume17pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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