• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 28 Issue 1
Jan.  2015
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Article Contents
ZHOU Guohua, CHEN Xing, CUI Hengfeng. Analysis of Digital Voltage-Mode Controlled Buck Converter with Dual-Edge Constant on-Time Modulation[J]. Journal of Southwest Jiaotong University, 2015, 28(1): 13-19,35. doi: 10.3969/j.issn.0258-2724.2015.01.003
Citation: ZHOU Guohua, CHEN Xing, CUI Hengfeng. Analysis of Digital Voltage-Mode Controlled Buck Converter with Dual-Edge Constant on-Time Modulation[J]. Journal of Southwest Jiaotong University, 2015, 28(1): 13-19,35. doi: 10.3969/j.issn.0258-2724.2015.01.003

Analysis of Digital Voltage-Mode Controlled Buck Converter with Dual-Edge Constant on-Time Modulation

doi: 10.3969/j.issn.0258-2724.2015.01.003
  • Received Date: 09 May 2014
  • Publish Date: 25 Feb 2015
  • To improve the accuracy of output regulation in a switching converter with constant on-time (COT) modulation, dual-edge constant-on time (DCOT) modulation scheme for the switching converter in continuous conduction mode was proposed, based on the characteristics of COT modulation and dual-edge pulse-width modulation. The principle of digital voltage-mode controlled Buck converter with DCOT modulation was introduced. Moreover, its steady-state and transient performances were analyzed and compared with those of digital voltage-mode controlled Buck converter with COT modulation. The results show that digital voltage-mode controlled Buck converter with DCOT modulation improves output-regulation accuracy by 50% of peak-to-peak value of output voltage ripple and reduces the transient regulation time by one switching cycle. Finally, the simulation and experimental results validate the correctness of the theoretical analysis.

     

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