一种占空比为3%至95%的峰谷电流型降压变换器

IF 4 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2024-10-22 DOI:10.1109/TCSII.2024.3484449

Zhong Zhao;Ping Luo;Zhiyuan Zhang;Jiahang Fan;Bo Zhang;Xiaowen Chen

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引用次数: 0

摘要

为了扩大占空比范围，提出了一种峰谷电流型（PVCM） Buck变换器。与传统的单电感电流控制变换器相比，PVCM降压变换器同时利用电感峰值电流（PIC）和电感谷电流（VIC）来精确调节输出电压。此外，转换器具有电压控制的延迟电路，能够主动调整工作频率并延长占空比范围。该转换器采用$0.18\mu $ m的BCD工艺实现。实验结果表明，样机在3% ~ 95%的占空比范围内，峰值效率为92%。

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A Peak-Valley Current-Mode Buck Converter With 3% to 95% Duty Cycle

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%.

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

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.