Digital Hybrid Current Mode Control with Asymmetric Slope Compensation for Three-Level Flying Capacitor Buck Converter

Abdulkerim Ugur, Murat Yilmaz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Due to high effective frequency and reduced voltage stress on the switching devices, the three level flying capacitor (3LFC) buck converter has potential to provide better efficiency and higher power density as compared to the traditional buck converter. However, the control implementation is challenging as a result of flying capacitor instability issue. In this paper, the digital hybrid current mode (HCM) control method which combines the average and peak current mode control techniques is modified and implemented to 3LFC buck converter. Flying capacitor voltage balancing is achieved by adjusting the slope compensation of the two switching pairs asymmetrically. The proposed asymmetric slope compensation technique for digital HCM control method is verified in simulations and experimentally with an ARM-based mixed-signal microcontroller on a 40 V input 13 V/6 A output prototype.

Original languageEnglish
Title of host publicationProceedings 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages377-382
Number of pages6
ISBN (Electronic)9781538676875
DOIs
Publication statusPublished - Aug 2019
Event2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019 - Istanbul, Turkey
Duration: 27 Aug 201929 Aug 2019

Publication series

NameProceedings 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019

Conference

Conference2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019
Country/TerritoryTurkey
CityIstanbul
Period27/08/1929/08/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

Keywords

  • digital control
  • Digital hybrid current mode control
  • three-level flying capacitor converter

Fingerprint

Dive into the research topics of 'Digital Hybrid Current Mode Control with Asymmetric Slope Compensation for Three-Level Flying Capacitor Buck Converter'. Together they form a unique fingerprint.

Cite this