HOME  /  SEARCH
Main Contributions
SCI
Conference
Patents
Papers
SCI
Others
Patents
International
Domestic
Commercialization
Transfer(기술이전)
Guidance(기술지도)
Testbed(시제품)
Award(수상실적)
 
 Home > Achievement > Main Contributions > SCI > A Design of a Wireless Power Receiving Unit with High Efficiency 6.78MHz Active Rectifier using Shared DLLs for Magnetic Resonant A4WP Applications

Domestic/International 국외  Principal Author Kang Yoon Lee, Keum Cheol Hwang, Youngoo Yang 
Title A Design of a Wireless Power Receiving Unit with High Efficiency 6.78MHz Active Rectifier using Shared DLLs for Magnetic Resonant A4WP Applications 
Journal IEEE TRANSACTIONS ON POWER ELECTRONICS ( Impact Factor : 6.007 ; JCR 상위 5%) 
Authors Hyung-Gu Park, Jae-Hyung Jang, Hong-Jin Kim, Young-Jun Park, Seong-Jing Oh, Young-Gun Pu, Keum Cheol Hwang, Youngoo Yang, Kang-Yoon Lee 
Date 2016년 06월 Page 4484-4498 
Volume 31   Number 6 

 This paper presents a full-CMOS Wireless Power Receiving Unit (WPRU) with high efficiency 6.78 MHz Active Rectifier and DC-DC Converter for magnetic resonant A4WP applications. The proposed high efficiency Active Rectifier with Delay Locked Loop (DLL) is a highly efficient receiver circuit intended for use in resonant wireless charging applications with a resonant frequency of 6.78 MHz. Each MOSFET of the proposed rectifier is turned on and off based on the AC input voltage. The delay between the AC input current and the AC input voltage due to the delays of internal blocks such as Voltage Limiter, Level Shifter, Gate Driver, and Comparator, will cause the reverse leakage current degrading the power efficiency. Thus, the proposed Active Rectifier adopts the Delay Locked Loop (DLL) to compensate for the delay caused by internal blocks, which leads to the removal of reverse leakage current and the power efficiency maximization. Moreover, to maximize power efficiency, Negative Impedance Circuit (NIC) was also adopted to minimize Switching Loss. In the case of DC-DC Converter, PLL is adopted for the constant Switching Frequency in Process, Voltage, Temperature (PVT) Variation to solve the efficiency reduction problem, especially by heat.

view list 

Jump to:  


   
이용약관 | 개인정보취급방침 | 이메일주소무단수집거부 | 책임의한계와법적고지 | 검색결과수집거부
경기도 수원시 장안구 서부로 2066 성균관대학교 자연과학캠퍼스 제1공학관 무선에너지하비스팅통신융합연구센터 23530호
(우: 440-746)
Tel: 031-299-4674 Fax: 031-299-4673
Copyright © 2014 무선에너지하비스팅통신융합연구센터 All rights reserved
Supported by ONTOIN