{"title":"Modeling and stability analysis of digital current-mode controlled Boost converter in z-domain","authors":"Yanfeng Chen, Wen He, Bo Zhang, Qingqian Zhang","doi":"10.1109/PEAC.2014.7037861","DOIUrl":null,"url":null,"abstract":"The Boost converter with digital current-mode control and leading edge modulation is modeled in z-domain first in this paper. The influences of time delay and zero-order holder (ZOH) on digital controlled converters are taken into consideration. Then, the corresponding circuit model is established and simulations are performed to show the effectiveness of the z-model. It's shown by simulations based on the circuit model that lower resolution of DPWM module would cause low-frequency oscillation behaviors in digital current-mode controlled DC-DC converters, which is verified by analysis of eigenvalues' movements based on the z-domain model.","PeriodicalId":309780,"journal":{"name":"2014 International Power Electronics and Application Conference and Exposition","volume":"47 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 International Power Electronics and Application Conference and Exposition","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PEAC.2014.7037861","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
The Boost converter with digital current-mode control and leading edge modulation is modeled in z-domain first in this paper. The influences of time delay and zero-order holder (ZOH) on digital controlled converters are taken into consideration. Then, the corresponding circuit model is established and simulations are performed to show the effectiveness of the z-model. It's shown by simulations based on the circuit model that lower resolution of DPWM module would cause low-frequency oscillation behaviors in digital current-mode controlled DC-DC converters, which is verified by analysis of eigenvalues' movements based on the z-domain model.
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