Dual mode digital buck converter controller without current sensor

Yu Lin Chen, Jiann Fuh Chen, Dai Wei Lai

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

1 Citation (Scopus)

Abstract

The common buck converter is used the pulse width modulation (PWM) mode under the heavy load and the pulse frequency modulation (PFM) mode under the light load to obtain the high efficiency. The control method, switching the PWM mode and the PFM mode automatically depend on the different loads, needs the current sensor to judge whether the inductor current is zero or not. The paper uses the no current sensing technology which switches the two modes automatically without the current sensor. Use the field programmable gate array (FPGA) to verify the functions and implement a buck converter which has 3∼4.2 V input voltage, 1.2 V output voltage and 86 % highest efficiency under 0.5 A output current. After the FPGA verification, the control circuit has been implemented in TSMC 1P6M 0.18 μm CMOS technology.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages118-123
Number of pages6
ISBN (Electronic)9781509049745
DOIs
Publication statusPublished - 2018 Apr 25
Event1st IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018 - Hamilton, New Zealand
Duration: 2018 Jan 302018 Feb 2

Publication series

NameProceedings - 2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018
Volume2018-January

Other

Other1st IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018
CountryNew Zealand
CityHamilton
Period18-01-3018-02-02

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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  • Cite this

    Chen, Y. L., Chen, J. F., & Lai, D. W. (2018). Dual mode digital buck converter controller without current sensor. In Proceedings - 2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018 (pp. 118-123). (Proceedings - 2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018; Vol. 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IESES.2018.8349859