An isolated power factor corrected power supply utilizing the transformer leakage inductance

Research output: Contribution to journalArticlepeer-review

Abstract

The widespread use of electronic devices increases the need for compact power factor corrected power supplies. This paper describes an isolated power factor corrected power supply that utilizes the leakage inductance of the isolation transformer to provide boost inductor functionality. The bulk capacitor is in the isolated part of the power supply allowing for controlled startup without dedicated surge limiting components. A control method based on switch timing and input/output voltage measurements is developed to jointly achieve voltage regulation and input power factor control. A prototype design is implemented with detailed measurements and waveforms shown to confirm the desired functionality.

Original languageEnglish
Article number8481581
Pages (from-to)6468-6477
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume34
Issue number7
DOIs
Publication statusPublished - Jul 2019

Keywords

  • AC-DC power conversion
  • power factor correction
  • transformer leakage inductance

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