一种具有零电流传感的高效有源整流器，用于松耦合无线电力传输系统

2016 IEEE International Conference on Consumer Electronics-Asia (ICCE-Asia) Pub Date : 2016-10-01 DOI:10.1109/ICCE-ASIA.2016.7804735

ByeongGi Jang, Sungjae Oh, Young-Jun Park, Kangyoon Lee

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引用次数: 6

摘要

提出了一种用于无线电力传输系统的全波有源整流器零电流传感技术。为了提高功率转换效率(PCE)，将无源二极管整流器的4个二极管替换为n型LDMOS，以减小压降，增强高压保护特性。此外，提出了零电流检测(Zero Current Sensing, ZCS)来检测反漏电流，使栅极控制信号在反漏电流流过之前关闭，从而使PCE最大化。整流器采用0.18μm CMOS工艺制作，面积为4 mm2。在150-kHz时，最大模拟PCE为96.8%。

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A high efficiency active rectifier with zero current sensing for loosely-coupled wireless power transfer systems

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 current so that gate control signal becomes off before reverse leakage current flows and PCE can be maximized. The proposed rectifier is fabricated using 0.18μm CMOS process and occupies 4 mm2 of area. The maximum simulated PCE of 96.8% at 150-kHz.

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2016 IEEE International Conference on Consumer Electronics-Asia (ICCE-Asia)

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