{"title":"A Peak-Valley Current-Mode Buck Converter With 3% to 95% Duty Cycle","authors":"Zhong Zhao;Ping Luo;Zhiyuan Zhang;Jiahang Fan;Bo Zhang;Xiaowen Chen","doi":"10.1109/TCSII.2024.3484449","DOIUrl":null,"url":null,"abstract":"A peak-valley current-mode (PVCM) Buck converter is presented to extend the duty cycle range. Compared with traditional single inductor current-controlled converters, the PVCM Buck converter employs both the peak inductor current (PIC) and the valley inductor current (VIC) to precisely regulate the output voltage. Additionally, the converter features a voltage-controlled delay circuit, to enable active adjustment of operating frequency and to extend the duty cycle range. The proposed converter is implemented using a \n<inline-formula> <tex-math>$0.18\\mu $ </tex-math></inline-formula>\nm BCD process. Experimental results demonstrate that the prototype achieves the 3% to 95% duty cycle range with a peak efficiency of 92%.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 1","pages":"328-332"},"PeriodicalIF":4.0000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Circuits and Systems II: Express Briefs","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10729223/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
A peak-valley current-mode (PVCM) Buck converter is presented to extend the duty cycle range. Compared with traditional single inductor current-controlled converters, the PVCM Buck converter employs both the peak inductor current (PIC) and the valley inductor current (VIC) to precisely regulate the output voltage. Additionally, the converter features a voltage-controlled delay circuit, to enable active adjustment of operating frequency and to extend the duty cycle range. The proposed converter is implemented using a
$0.18\mu $
m BCD process. Experimental results demonstrate that the prototype achieves the 3% to 95% duty cycle range with a peak efficiency of 92%.
期刊介绍：
TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes:
Circuits: Analog, Digital and Mixed Signal Circuits and Systems
Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic
Circuits and Systems, Power Electronics and Systems
Software for Analog-and-Logic Circuits and Systems
Control aspects of Circuits and Systems.
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