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本文提出一种6.78MHz 6W无线功率接收器，采用3电平（1×/½×/0×）可重构谐振调节整流器，实现单级AC-DC转换与电压调节，解决了传统两级拓扑（整流器+降压转换器）效率低、体积大的问题。
devices to cut the last wire. Resonant wireless power transfer (R-WPT) using magnetic resonance emerges as a promising approach, as it provides spatial freedom and can charge multiple devices simultaneously. ISM-band frequencies such as 6.78MHz or 13.56MHz are commonly used as the resonant frequency of the LC tank [1-4]. The wireless power receiver usually adopts a two-stage topology [3,4]. The first stage is a rectifier for AC-DC conversion, and the second stage is a buck converter or an LDO for DC-DC regulation. The two-stage power processing degrades the efficiency and adds extra volume and cost. The resonant regulating rectifier (3R) of [1] implements a passive rectifier followed by a stepdown charge pump to produce a regulated output voltage. It consists of 3 on-chip
Lin Cheng, Wing-Hung Ki, Tat-To Wong, Tak-Sang Yim, Chi-Ying Tsui
Hong Kong University of Science and Technology, Hong Kong, China Wireless charging is developing into a standard feature of portable electronic