A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission
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 redu...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/152137 |
| _version_ | 1811695476763787264 |
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| author | Bai, Xiaoyin Kong, Zhi-Hui Siek, Liter |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Bai, Xiaoyin Kong, Zhi-Hui Siek, Liter |
| author_sort | Bai, Xiaoyin |
| collection | NTU |
| description | 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%. |
| first_indexed | 2024-10-01T07:24:05Z |
| format | Journal Article |
| id | ntu-10356/152137 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:24:05Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1521372021-07-23T02:39:30Z A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission Bai, Xiaoyin Kong, Zhi-Hui Siek, Liter School of Electrical and Electronic Engineering EDB Panasonic VIRTUS, IC Design Centre of Excellence Engineering::Electrical and electronic engineering 6.78 MHz Wireless Power Transfer (WPT) 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%. Economic Development Board (EDB) The authors would like to thank all Panasonic and EDB for sponsoring the PhD scholarship. 2021-07-23T02:39:30Z 2021-07-23T02:39:30Z 2017 Journal Article 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 1063-8210 https://hdl.handle.net/10356/152137 10.1109/TVLSI.2016.2626301 4 25 1297 1306 en IEEE Transactions on Very Large Scale Integration (VLSI) Systems © 2017 Institute of Electrical and Electronics Engineers (IEEE). All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering 6.78 MHz Wireless Power Transfer (WPT) Bai, Xiaoyin Kong, Zhi-Hui Siek, Liter A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission |
| title | A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission |
| title_full | A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission |
| title_fullStr | A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission |
| title_full_unstemmed | A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission |
| title_short | A high-efficiency 6.78-MHz full active rectifier with adaptive time delay control for wireless power transmission |
| title_sort | high efficiency 6 78 mhz full active rectifier with adaptive time delay control for wireless power transmission |
| topic | Engineering::Electrical and electronic engineering 6.78 MHz Wireless Power Transfer (WPT) |
| url | https://hdl.handle.net/10356/152137 |
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