High efficiency and smooth transition buck-boost converter for extending battery life in portable devices

Ping Ching Huang*, Wei Quan Wu, Hsin Hsin Ho, Ke-Horng Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations

Abstract

This paper presents a high-efficiency and smooth-transition buck-boost (BB) converter to extend the battery life of portable devices. Owing to the usage of four switches, the BB control topology needs to minimize the switching and conduction losses at the same time. Therefore, over a wide input voltage range, the proposed BB converter consumes minimum switching loss like the basic operation of buck or boost converter. Besides, the conduction loss is reduced by means of the reduction of the inductor current level. Especially, the proposed BB converter offers good line/load regulation and thus provides a smooth and stable output voltage when the battery voltage decreases. Simulation results show that the output voltage drops is very small during the whole battery life time and the output transition is very smooth during the mode transition by the proposed BB control scheme.

Original languageEnglish
Title of host publication2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
Pages2869-2872
Number of pages4
DOIs
StatePublished - 28 Dec 2009
Event2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009 - San Jose, CA, United States
Duration: 20 Sep 200924 Sep 2009

Publication series

Name2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009

Conference

Conference2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
CountryUnited States
CitySan Jose, CA
Period20/09/0924/09/09

Keywords

  • Buck-boost converter
  • DC-DC
  • Extended battery life
  • High efficiency
  • Non-inverting
  • Smooth transition

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    Huang, P. C., Wu, W. Q., Ho, H. H., & Chen, K-H. (2009). High efficiency and smooth transition buck-boost converter for extending battery life in portable devices. In 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009 (pp. 2869-2872). [5316448] (2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009). https://doi.org/10.1109/ECCE.2009.5316448