Single-Switch Resonant Soft-Switching Ultra-High Gain DC-DC Converter with Continuous Input Current

Sohrab Abbasian, Homayon Soltani Gohari, Mohammad Farsijani, Karim Abbaszadeh, Hossein Hafezi, Shaahin Filizadeh

Research output: Contribution to journalArticleScientificpeer-review

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An ultra-high gain DC-DC converter with single-switch structure is introduced in this paper. Full soft-witching is provided by simultaneous use of quasi-resonant performance of one resonant tank and leakage inductance of a three-winding coupled inductor (CI). Adopting the secondary and tertiary windings of the CI in separated voltage multiplier cells enables the converter to provide ultra-high voltage gain. The reverse recovery problem is resolved thanks to the quasi zero current switching performance of nearly all diodes, especially output diode because of the second resonant tank, so the total electromagnetic interference is significantly reduced. Continuous input current with low ripple expands the application of the proposed converter, especially in renewable energy applications. Steady-state performance and design considerations of the introduced converter are analyzed thoroughly and compared with recently introduced converters to establish its merits. Experimental results of a 200 W prototype are given to validate its analysis and performance.

Original languageEnglish
Pages (from-to)33482-33491
JournalIEEE Access
Publication statusPublished - 2022
Publication typeA1 Journal article-refereed


  • Capacitors
  • Coupled inductor
  • DC-DC power converter
  • full soft-switching
  • Inductors
  • single switch structure
  • Soft switching
  • Switches
  • ultra-high step-up converter
  • Voltage
  • Windings
  • Zero current switching

Publication forum classification

  • Publication forum level 2

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)


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