A high efficiency active rectifier with zero current sensing for loosely-coupled wireless power transfer systems

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Abstract

This paper presents a full-wave active rectifier with zero current sensing technique for wireless power transfer system. In order to improve the Power Conversion Efficiency (PCE), the four diodes of a passive diode rectifier are replaced by N-Type LDMOS to reduce voltage drop and enhance high voltage protection characteristic. Moreover, Zero Current Sensing (ZCS) is proposed to detect reverse leakage current so that gate control signal becomes off before reverse leakage current flows and PCE can be maximized. The proposed rectifier is fabricated using 0.18μm CMOS process and occupies 4 mm2 of area. The maximum simulated PCE of 96.8% at 150-kHz.

Original languageEnglish
Title of host publication2016 IEEE International Conference on Consumer Electronics-Asia, ICCE-Asia 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509027439
DOIs
StatePublished - 3 Jan 2017
Event2016 IEEE International Conference on Consumer Electronics-Asia, ICCE-Asia 2016 - Seoul, Korea, Republic of
Duration: 26 Oct 201628 Oct 2016

Publication series

Name2016 IEEE International Conference on Consumer Electronics-Asia, ICCE-Asia 2016

Conference

Conference2016 IEEE International Conference on Consumer Electronics-Asia, ICCE-Asia 2016
Country/TerritoryKorea, Republic of
CitySeoul
Period26/10/1628/10/16

Keywords

  • Active rectifier
  • Power conversion efficiency
  • Reverse leakage current
  • Wireless power transfer

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