A digitally controlled switching regulator with reduced conductive EMI spectra

Chien Hung Tsai, Chun Hung Yang, Jui Chi Wu

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

This paper presents the use of a combined random pulse position modulation (RPPM)/digital pulsewidth modulation (DPWM) digital controller for a buck converter to simultaneously achieve low-conductive electromagnetic interference (EMI) and a fast transient response. An area-efficient RPPM/DPWM controller suitable for advanced system-on-chip integration is proposed and implemented in a field-programmable gate array-based prototype to verify its EMI-suppression capability. The experimental results for a 1.2-V digital buck converter show that the proposed digital switching regulator can switch between RPPM and DPWM modes smoothly and automatically. Closed-loop system measurements demonstrate that, compared to DPWM, up to 17.27 and 14.99 dB power spectra reductions are obtained in the input current and switching node, respectively.

原文English
文章編號6236153
頁(從 - 到)3938-3947
頁數10
期刊IEEE Transactions on Industrial Electronics
60
發行號9
DOIs
出版狀態Published - 2013 一月 1

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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