A Temperature Compensated 61-W Class-E Soft-Switching GaN-Based Active Diode Rectifier for Wireless Power Transfer Applications

Shang Hsien Yang, Ke-Horng Chen*, Ying Hsi Lin, Shian Ru Lin, Tsung Yen Tsai

*Corresponding author for this work

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

Abstract

The proposed 6.78-MHz Class-E receiver features a soft-switching and temperature-compensated GaN-based active diode (GAD) rectifier design. Using the temperature dependence of the relationship between the driving voltage and the on-resistance of the switch,the gate-source control voltage of GaN can be adjusted to mitigate efficiency variations based on temperature effects. Moreover,a phase shift comparator activation controller is based on the direct relationship between the phase delay on the gate drive signals and the output power. The temperature dependency voltage offset of the comparator is alleviated with auto-zeroing. GAD rectifier ensures energy transfer up to 61 W and 6.8 A,high efficiency of 92%,and low harmonic distortion of 2.1%.

Original languageEnglish
Title of host publicationESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages203-206
Number of pages4
ISBN (Electronic)9781728115504
DOIs
StatePublished - Sep 2019
Event45th IEEE European Solid State Circuits Conference, ESSCIRC 2019 - Cracow, Poland
Duration: 23 Sep 201926 Sep 2019

Publication series

NameESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference

Conference

Conference45th IEEE European Solid State Circuits Conference, ESSCIRC 2019
CountryPoland
CityCracow
Period23/09/1926/09/19

Keywords

  • Auto-zeroing (AZ)
  • GaN
  • soft-switching
  • temperature compensation
  • wireless power transfer

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