A 69.3% Efficiency, 6.78-MHz Wireless Power Delivery System with 0X/1X Regulating Rectifier and Reconfigurable Power Amplifier

Jonathan Fuh, Fu Bin Yang, Po Hung Chen

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

Abstract

In this paper, we present a 6.78-MHz high-efficiency wireless power transfer system with a reconfigurable class-D power amplifier and a 0X/1X regulating rectifier. The proposed reconfigurable power amplifier delivers 0.25X/1X output power by adjusting the power-stage configuration to improve system efficiency. To enhance the receiver efficiency, the proposed 0X/1X regulating rectifier with adaptive offset compensation achieves both voltage rectification and voltage regulation in a single conversion stage. The measurement results demonstrate a 90.1% peak receiver efficiency and a 69.3% peak system efficiency. The system provides the load circuit with 5-V regulated output and 250-mW maximum output power.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE Asian Solid-State Circuits Conference, A-SSCC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages37-38
Number of pages2
ISBN (Electronic)9781728151069
DOIs
StatePublished - Nov 2019
Event15th IEEE Asian Solid-State Circuits Conference, A-SSCC 2019 - Macao, China
Duration: 4 Nov 20196 Nov 2019

Publication series

NameProceedings - 2019 IEEE Asian Solid-State Circuits Conference, A-SSCC 2019

Conference

Conference15th IEEE Asian Solid-State Circuits Conference, A-SSCC 2019
CountryChina
CityMacao
Period4/11/196/11/19

Keywords

  • reconfigurable power amplifier
  • regulating active rectifier
  • resonant coupling
  • wireless power transfer

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