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Design and analysis of a novel interleaving LLC SMPS with load current sharing performance

  • Junping He*
  • , Jinlu Wang
  • , Guozhuang Bai
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen

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

Abstract

LLC series resonant topology has been widely adopted in many kinds of power converters for its high frequency, high efficiency and high power density advantages. However, the ordinary topology of a single-phase LLC is not fit to be used in low-voltage high-current output field for its relative larger output voltage ripple. In order to provide a low voltage and high current output using a LLC topology, a novel interleaving LLC switched-mode power supply design was proposed to reduce output voltage ripples ripple in this paper. This design used two hardware measures to automatically ensure a good load current sharing effect between two-branch LLC circuits and avoid the PFM difficulties of the active current sharing methods. The principles and design procedures of this novel LLC converter were introduced in detail and verified by Saber simulation results. A 1.5kW DC/DC prototype was built up in the end and the experiment results showed that a good current sharing performance was achieved.

Original languageEnglish
Title of host publicationMicro Nano Devices, Structure and Computing Systems II
Pages346-353
Number of pages8
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 2nd International Conference on Micro Nano Devices, Structure and Computing Systems, MNDSCS 2013 - Shenzhen, China
Duration: 23 Jan 201324 Jan 2013

Publication series

NameAdvanced Materials Research
Volume677
ISSN (Print)1022-6680

Conference

Conference2013 2nd International Conference on Micro Nano Devices, Structure and Computing Systems, MNDSCS 2013
Country/TerritoryChina
CityShenzhen
Period23/01/1324/01/13

Keywords

  • Current sharing
  • Interleaving LLC
  • Output voltage ripple

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