{"title":"用于DC/DC转换器的无源无损缓冲器","authors":"Ching-Jung Tseng, Chern-Lin Chen","doi":"10.1109/APEC.1998.654027","DOIUrl":null,"url":null,"abstract":"Passive lossless snubbers are proposed to improve the turn-on and turn-off transients of the MOSFETs in PWM DC/DC power converters. Switching losses and EMI noises are reduced by restricting the di/dt of the reverse recovery current and the dv/dt of the drain-source voltage. The MOSFET operates at ZVS turn-off and near ZCS turn-on. The freewheeling diode is also commutated with ZVS. As a demonstration, operation principles, theoretical analyses, relevant equations and experimental results of a boost power converter equipped with the proposed snubber are presented in detail. An efficiency of 96% has also been measured in the experimental results reported for a 1 kW, 100 kHz prototype in the laboratory. Six basic nonisolated PWM DC/DC power converters (buck, boost, buck-boost, Cuk, Sepic and Zeta) equipped with the proposed passive lossless snubbers are also shown in this paper.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"14 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"81","resultStr":"{\"title\":\"Passive lossless snubbers for DC/DC converters\",\"authors\":\"Ching-Jung Tseng, Chern-Lin Chen\",\"doi\":\"10.1109/APEC.1998.654027\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Passive lossless snubbers are proposed to improve the turn-on and turn-off transients of the MOSFETs in PWM DC/DC power converters. Switching losses and EMI noises are reduced by restricting the di/dt of the reverse recovery current and the dv/dt of the drain-source voltage. The MOSFET operates at ZVS turn-off and near ZCS turn-on. The freewheeling diode is also commutated with ZVS. As a demonstration, operation principles, theoretical analyses, relevant equations and experimental results of a boost power converter equipped with the proposed snubber are presented in detail. An efficiency of 96% has also been measured in the experimental results reported for a 1 kW, 100 kHz prototype in the laboratory. Six basic nonisolated PWM DC/DC power converters (buck, boost, buck-boost, Cuk, Sepic and Zeta) equipped with the proposed passive lossless snubbers are also shown in this paper.\",\"PeriodicalId\":156715,\"journal\":{\"name\":\"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition\",\"volume\":\"14 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-02-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"81\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APEC.1998.654027\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APEC.1998.654027","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Passive lossless snubbers are proposed to improve the turn-on and turn-off transients of the MOSFETs in PWM DC/DC power converters. Switching losses and EMI noises are reduced by restricting the di/dt of the reverse recovery current and the dv/dt of the drain-source voltage. The MOSFET operates at ZVS turn-off and near ZCS turn-on. The freewheeling diode is also commutated with ZVS. As a demonstration, operation principles, theoretical analyses, relevant equations and experimental results of a boost power converter equipped with the proposed snubber are presented in detail. An efficiency of 96% has also been measured in the experimental results reported for a 1 kW, 100 kHz prototype in the laboratory. Six basic nonisolated PWM DC/DC power converters (buck, boost, buck-boost, Cuk, Sepic and Zeta) equipped with the proposed passive lossless snubbers are also shown in this paper.
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