Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/152137
Title: A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission
Authors: Bai, Xiaoyin
Kong, Zhi-Hui
Siek, Liter
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2017
Source: Bai, X., Kong, Z. & Siek, L. (2017). A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission. IEEE Transactions On Very Large Scale Integration (VLSI) Systems, 25(4), 1297-1306. https://dx.doi.org/10.1109/TVLSI.2016.2626301
Journal: IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Abstract: This paper presents a full active rectifier consisting of GaN devices and a CMOS controller designed for wireless power transmission in high-power consumer devices. An adaptive time delay control circuit is developed to maximize the conduction interval of the GaN switch, which can significantly reduce the power loss caused by the forward voltage imposed by the diode. The proposed control algorithm also eliminates the reverse leakage current of the rectifier, and thus further improves its power transfer efficiency. The controller implemented based on a high-voltage 0.18-μm CMOS process and the power stage consisting of four GaN transistors are assembled on the same printed circuit board (PCB) board. The proposed rectifier provides a maximum output current of 3 A at 5 V, with a 6.78-MHz ac input voltage. Its peak power transfer efficiency is 91.8%.
URI: https://hdl.handle.net/10356/152137
ISSN: 1063-8210
DOI: 10.1109/TVLSI.2016.2626301
Rights: © 2017 Institute of Electrical and Electronics Engineers (IEEE). All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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