A Galvanic-Free Secondary-Side Control Flyback Converter with Digital Adaptive On-Time Control and Direct Sequence Spread Spectrum Technique for 15.5% Error Recovery Rate Improvement

Wei Cheng Huang, Yuan Jin Li, Yi Hsiang Kao, Ke Horng Chen, Kuo Lin Zheng, Ying Hsi Lin, Shian Ru Lin, Tsung Yen Tsai

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

Abstract

For today's convenient lightweight AC power adapters, the proposed galvanic-free secondary-side controlled flyback converter can reduce power modules, since the bulky pulse transformer and photo-coupler can be eliminated by using the main transformer to send the feedback control signal. The proposed direct sequence spread spectrum (DSSS) can have good encryption on the system side and improve the bit error recovery rate from 0% to 15.5%, which can tolerate large noise interference. In addition, digital adaptive on-Time control is adopted to improve steady-state efficiency, with light-load and heavy-load efficiencies reaching 92% and 93.8%, respectively.

Original languageEnglish
Title of host publicationESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages285-288
Number of pages4
ISBN (Electronic)9781665484947
DOIs
StatePublished - 2022
Event48th IEEE European Solid State Circuits Conference, ESSCIRC 2022 - Milan, Italy
Duration: 19 Sep 202222 Sep 2022

Publication series

NameESSCIRC 2022 - IEEE 48th European Solid State Circuits Conference, Proceedings

Conference

Conference48th IEEE European Solid State Circuits Conference, ESSCIRC 2022
Country/TerritoryItaly
CityMilan
Period19/09/2222/09/22

Keywords

  • direct sequence spread spectrum (DSSS)
  • flyback converter
  • photo-coupler

Fingerprint

Dive into the research topics of 'A Galvanic-Free Secondary-Side Control Flyback Converter with Digital Adaptive On-Time Control and Direct Sequence Spread Spectrum Technique for 15.5% Error Recovery Rate Improvement'. Together they form a unique fingerprint.

Cite this