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本文提出一种用于无线功率传输的单级双极四输出稳压整流器，仅用五个功率开关实现四个独立调节的双极输出。采用线圈复用DC-DC模式在重负载条件下维持工作，实现了91%的峰值效率和173mW的输出功率。
Abstract A bipolar quad-output regulating rectifier for wireless power transfer (WPT) is presented. Using only five power switches, it provides four independently regulated bipolar outputs. A coil-reused DC-DC mode sustains operation under heavy-load conditions beyond the RX input power limit. The rectifier achieves up to 173mW output power, 91% peak efficiency, and fast transient recovery. Wireless power transfer (WPT) is a promising approach for non-invasive powering of biomedical implants such as neural interfaces and retinal prostheses. These advanced applications, involving large-array neural recording and multi-channel stimulation, impose stringent requirements on the WPT system. First, it must deliver multiple high-power (tens of mW) DC outputs across distinct voltage domains to supply diverse functional blocks [14]. Second, bipolar supplies are highly desired for neural stimulators, eliminating the need
Tianqi Lu1, Bo Zhao2, Sijun Du1
Delft University of Technology, Delft, The Netherlands, 2Zhejiang University, Hangzhou, China