{"title":"Topology survey for GaN-based high voltage step-down single-input multi-output DC-DC converter systems","authors":"K. George, S. Ang","doi":"10.1109/WIPDA.2016.7799964","DOIUrl":null,"url":null,"abstract":"In this work, several dc-dc converter topologies are examined for GaN-based, single-input, multi-output, large step-down applications; namely 200V∼400V dc distribution systems in modern defense, aeronautical, and datacenter industries. Many critical loads in these larger systems are supplied by 48V, 24V, 12V, or lower voltage sources, requiring a significant step-down of the main dc bus voltage. Due to these large conversion ratios, multi-stage schemes will be considered along with single-stage, multi-output converters. A discussion following analysis of each converter and an update on their current state-of-the-art will shed light on those converters that stand to benefit the most from GaN technology, along with a recommendation for a modular, GaN-based, power electronic building block for such DC-DC conversion applications with preference given to those topologies that lend themselves to modularity, high efficiency, and reduced size.","PeriodicalId":431347,"journal":{"name":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE 4th Workshop on Wide Bandgap Power Devices and Applications (WiPDA)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WIPDA.2016.7799964","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 6
Abstract
In this work, several dc-dc converter topologies are examined for GaN-based, single-input, multi-output, large step-down applications; namely 200V∼400V dc distribution systems in modern defense, aeronautical, and datacenter industries. Many critical loads in these larger systems are supplied by 48V, 24V, 12V, or lower voltage sources, requiring a significant step-down of the main dc bus voltage. Due to these large conversion ratios, multi-stage schemes will be considered along with single-stage, multi-output converters. A discussion following analysis of each converter and an update on their current state-of-the-art will shed light on those converters that stand to benefit the most from GaN technology, along with a recommendation for a modular, GaN-based, power electronic building block for such DC-DC conversion applications with preference given to those topologies that lend themselves to modularity, high efficiency, and reduced size.