A High-Efficiency Triple-Mode Active Rectifier With Gate Charge Recycling Technique for Wireless Power Transfer System

Qurat Ul Ain, Danial Khan, Muhammad Basim, Seong Jin Oh, Khuram Shehzad, Byeong Gi Jang, Syed Adil Ali Shah, Jong Wan Jo, Young Gun Pu, Keum Cheol Hwang, Youngoo Yang, Kang Yoon Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This paper presents an active rectifier design with a gate charge recycling technique. Gate switching increases the switching losses of the active rectifier, therefore, as a way to reduce switching losses, the gate charge recycling technique is proposed. The output power of 15 W is achieved to enable rapid charging using the three standards for wireless charging mode, magnetic induction (WPC and PMA), and magnetic resonance (A4WP). Power-sharing is used to lower the amount of power consumed by each standard mode core. In WPC, and PMA mode zero current sensing (ZCS) technique has been used while in the A4WP mode, the digitally controlled delay adjustment (DCDA) technique has been employed. By using a gate charge recycling block, the efficiency has been considerably improved due to the lower power consumption. It aims to increase the overall efficiency by reusing switching loss using the gate charge recycling block, and it has effectiveness by allowing three standard modes to operate with one single chip. The proposed design combines charge-recycling with zero current sensing techniques to improve power efficiency. The layout size is 4.75μm2. The achieved efficiency is 98.6 % in the magnetic induction method (WPC/PMA) at 15 W, and 94.86 % in the magnetic resonance method (A4WP) with an output power level of 15 W. The chip is fabricated in the BCD 0.18μm CMOS process.
Original languageEnglish (US)
Pages (from-to)45943-45953
Number of pages11
JournalIEEE Access
Volume10
DOIs
StatePublished - Jan 1 2022
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-23

ASJC Scopus subject areas

  • General Engineering
  • General Computer Science
  • General Materials Science

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