Weston D. Braun;Eric A. Stolt;Kristi Nguyen;Jeronimo Segovia-Fernandez;Sombuddha Chakraborty;Ruochen Lu;Juan M. Rivas-Davila
{"title":"A Stacked Piezoelectric Converter Using a Segmented IDT Lithium Niobate Resonator","authors":"Weston D. Braun;Eric A. Stolt;Kristi Nguyen;Jeronimo Segovia-Fernandez;Sombuddha Chakraborty;Ruochen Lu;Juan M. Rivas-Davila","doi":"10.1109/OJPEL.2024.3365029","DOIUrl":null,"url":null,"abstract":"Piezoelectric resonators promise to increase dc-dc converter power density by replacing inductive components. However, piezoelectric resonators are not direct circuit level replacements for inductors, requiring new topologies. In this paper, we present a stacked converter using two piezoelectric resonators, providing improved efficiency at low conversion ratios. This converter is realized with a lithium niobate thickness-shear mode resonator with interdigitated electrodes that allow the two resonators required for the topology to be realized as tightly matched sub-resonators on the same substrate. The 180 V to 60 V converter operates between 6.15 MHz and 6.35 MHz and achieves a resonator-level power density of \n<inline-formula><tex-math>$\\text{1.34}\\;\\text{kW}/\\text{cm}^{3}$</tex-math></inline-formula>\n.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":null,"pages":null},"PeriodicalIF":5.0000,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10432952","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE open journal of power electronics","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10432952/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Piezoelectric resonators promise to increase dc-dc converter power density by replacing inductive components. However, piezoelectric resonators are not direct circuit level replacements for inductors, requiring new topologies. In this paper, we present a stacked converter using two piezoelectric resonators, providing improved efficiency at low conversion ratios. This converter is realized with a lithium niobate thickness-shear mode resonator with interdigitated electrodes that allow the two resonators required for the topology to be realized as tightly matched sub-resonators on the same substrate. The 180 V to 60 V converter operates between 6.15 MHz and 6.35 MHz and achieves a resonator-level power density of
$\text{1.34}\;\text{kW}/\text{cm}^{3}$
.