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This paper presents a full-wave active rectifier with zero current sensing technique for wireless power transfer system. In order to improve the Power Conversion Efficiency (PCE), the four diodes of a passive diode rectifier are replaced by N-type LDMOS to reduce voltage drop and enhance high voltage protection characteristic. Moreover, Zero Current Sensing (ZCS) is proposed to detect reverse leakage...
This paper presents a full-CMOS wireless power receiving unit (WPRU) with a high-efficiency 6.78-MHz active rectifier and a dc–dc converter for magnetic-resonant alliance for wireless power (A4WP) applications. The proposed high-efficiency active rectifier with delay-locked loop (DLL) is a highly efficient receiver circuit intended for use in resonant wireless charging applications with a resonant...
This paper presents an inductive coupling wireless power receiver with high efficiency active rectifier and multi feedback LDO regulator. The synchronous active rectifier with the zero current sensing is proposed to achieve the high efficiency minimizing the reverse leakage current. Multi Feedback LDO regulator is proposed to implement the output voltage regulation, over voltage protection, over current...
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