An Efficiency-Enhanced Active Rectifier with Offset-Controlled Comparators for WPT Systems

被引：0
|
作者：
Jiang, Yuxuan [1 ]
Xu, Zhiqiang [1 ]
Rodriguez-Villegas, Esther [1 ]
机构：
[1] Imperial Coll London, Dept Elect & Elect Engn, London SW7 2AZ, England
来源：
2024 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, ISCAS 2024 | 2024年
关键词：
Wireless Power Transfer; Power Management; Analog Circuit Design; Active Rectifier; High-speed Comparator; Offset Controller; WIRELESS POWER TRANSFER; CMOS RECTIFIER; NEUROSTIMULATION; CHIP;
D O I：
10.1109/ISCAS58744.2024.10558409
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This paper presents an efficiency-enhanced active rectifier tailored for on-chip wireless power transfer (WPT) systems. Two proposed offset controllers are implemented in the comparator of the rectifier. These controllers are instrumental in minimizing the switch-on and switch-off delays of power transistors within the rectifier. Consequently, the active rectifier achieved a power conversion efficiency (PCE) of 93.3% under conditions with a 2.45V peak 13.56MHz RF input signal, a 0.6k Omega output load resistance, and an output DC voltage of 2.3V. Additionally, the overall efficiency of the designed WPT system reached 72.5%.
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页数：5
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