A Novel Buck Converter with Constant Frequency Controlled Technique
學年 110
學期 1
出版（發表）日期 2021-09-13
作品名稱 A Novel Buck Converter with Constant Frequency Controlled Technique
作品名稱（其他語言）
著者 Hsiao-Hsing Chou, Hsin-Liang Chen
單位
出版者
著錄名稱、卷期、頁數 Energies, 14(18)
摘要 This paper presents a buck converter with a novel constant frequency controlled technique, which employs the proposed frequency detector and adaptive on-time control (AOT) logic to lock the switching frequency. The control scheme, design concept, and circuit realization are presented. In contrast to a complex phase lock loop (PLL), the proposed scheme is easy to implement. With this novel technique, a buck converter is designed to produce an output voltage of 1.0–2.5 V at the input voltage of 3.0–3.6 V and the maximum load current of 500 mA. The proposed scheme was verified using SIMPLIS and MathCAD. The simulation results show that the switching frequency variation is less than 1% at an output voltage of 1.0–2.5 V. Furthermore, the recovery time is less than 2 μs for a step-up and step-down load transient. The circuit will be fabricated using UMC 0.18 μm 1P6M CMOS processes. The control scheme, design concept and circuit realization are presented in this paper.
關鍵字 adaptive on time (AOT); constant on time (COT); constant off time (CFT); voltage mode control (VMC); current mode control (CMC); peak current mode (PCM); valley current mode (VCM); average current mode (ACM); electromagnetic interference (EMI); phase lock loop (PLL)
語言 zh_TW
ISSN 1996-1073
期刊性質 國外
收錄於 SCI Scopus
產學合作
通訊作者
審稿制度 是
國別 NLD
公開徵稿
出版型式 ,電子版
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