A new high efficiency and high power density 48V to 1V converter

2021 IEEE 1st International Power Electronics and Application Symposium (PEAS) Pub Date : 2021-11-13 DOI:10.1109/peas53589.2021.9628611

Chase Lin, Owen Song, Jimmy Wang

{"title":"A new high efficiency and high power density 48V to 1V converter","authors":"Chase Lin, Owen Song, Jimmy Wang","doi":"10.1109/peas53589.2021.9628611","DOIUrl":null,"url":null,"abstract":"This paper presents a new converter of high efficiency and high power density power supply that can significantly reduce the regulated converter rated power and increase the unregulated converter rated power, so the efficiency of the power supply can be improved. The LLC DCX converter can be very high efficiency and can work in a very high switching frequency which means high power density, but it can not regulate the output voltage, so the LLC DCX converter is an unregulated converter [1]. The four switch Buck Boost converter can regulate output voltage, step up and step down, but its efficiency and power density is low because of its hard-switching feature [2]. The four switch Buck Boost converter can cascade with the LLC DCX converter to make up a two stages architecture converter for the 48V-to-1V application [3]. As the cascade structure, the regulated converter rated power is 100% which deteriorates the efficiency and power density. The unregulated converter rated power ratio of the proposal converter can be increased to at least 73% so the new topology has an efficiency close to LLC DCX’s.","PeriodicalId":268264,"journal":{"name":"2021 IEEE 1st International Power Electronics and Application Symposium (PEAS)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE 1st International Power Electronics and Application Symposium (PEAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/peas53589.2021.9628611","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

This paper presents a new converter of high efficiency and high power density power supply that can significantly reduce the regulated converter rated power and increase the unregulated converter rated power, so the efficiency of the power supply can be improved. The LLC DCX converter can be very high efficiency and can work in a very high switching frequency which means high power density, but it can not regulate the output voltage, so the LLC DCX converter is an unregulated converter [1]. The four switch Buck Boost converter can regulate output voltage, step up and step down, but its efficiency and power density is low because of its hard-switching feature [2]. The four switch Buck Boost converter can cascade with the LLC DCX converter to make up a two stages architecture converter for the 48V-to-1V application [3]. As the cascade structure, the regulated converter rated power is 100% which deteriorates the efficiency and power density. The unregulated converter rated power ratio of the proposal converter can be increased to at least 73% so the new topology has an efficiency close to LLC DCX’s.

查看原文本刊更多论文

一种新型高效率、高功率密度48V转1V变换器

本文提出了一种新型的高效、高功率密度的变换器电源，可以显著降低稳压变换器的额定功率，提高非稳压变换器的额定功率，从而提高电源的效率。LLC DCX变换器的效率非常高，可以在非常高的开关频率下工作，这意味着功率密度很高，但它不能调节输出电压，因此LLC DCX变换器是一种非稳压变换器[1]。四开关Buck Boost变换器可以调节输出电压、升压和降压，但由于其硬开关特性，其效率和功率密度较低[2]。四开关Buck升压转换器可以与LLC DCX转换器级联，构成48v到1v应用的两级结构转换器[3]。由于采用串级结构，稳压变换器的额定功率为100%，降低了效率和功率密度。该方案的非稳压变换器额定功率比可以提高到至少73%，因此新拓扑的效率接近LLC DCX。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2021 IEEE 1st International Power Electronics and Application Symposium (PEAS)

自引率

0.00%

发文量