Transient improvement by window transient enhancement and overshoot suppression techniques in current mode boost converter

Yean Kuo Luo*, Chao Chang Chiou, Chun Hsien Wu, Ke-Horng Chen, Wei Chou Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this paper, a current mode boost converter using window transient enhancement (WTE) and overshoot suppression (OSS) technique is presented for digital still camera (DSC) applications. The peak-to-peak transient overshoot voltage demand of a DSC motor driver is generally within 4%-5% of the regulated value. However, conventional boost converters usually fail to pass this criterion during large load transient. The OSS technique reduces the overshoot voltage when load current changes from heavy to very light. Experimental results show that compared with the use of a conventional current mode boost converter, the use of the technique reduces drop voltage about 62% and overshoot voltage about 51% when the load current has a load step of 400 mA. Moreover, the settling time improves to 43%, which is better than in the conventional case of a 400 mA load current step. The overhead of the silicon area is about 4.5% to achieve the overshoot reduction. The estimated high performance demonstrates that it is suitable for DSC applications.

Original languageEnglish
Article number42
Pages (from-to)2753-2761
Number of pages9
JournalIEEE Transactions on Power Electronics
Volume26
Issue number10
DOIs
StatePublished - 12 Oct 2011

Keywords

  • Boost converter
  • OSS technique
  • constant frequency regulation
  • dc-dc power converter
  • free-wheeling switching
  • on-chip compensation
  • overshoot suppression

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