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Energies 2018, 11(3), 479; https://doi.org/10.3390/en11030479

Design of Peak Efficiency of 85.3% WPC/PMA Wireless Power Receiver Using Synchronous Active Rectifier and Multi Feedback Low-Dropout Regulator

1
College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea
2
School of Information and Communications, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
*
Author to whom correspondence should be addressed.
Received: 20 January 2018 / Revised: 12 February 2018 / Accepted: 22 February 2018 / Published: 25 February 2018
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Abstract

An efficient synchronous active rectifier and Multi Feedback low drop out (LDO) Regulator coupled with a wireless power receiver (WPR) is proposed in this study. An active rectifier with maximum power conversion efficiency (PCE) of 94.2% is proposed to mitigate the reverse leakage current using zero current sensing. Output voltage and current are regulated by multi-feedback LDO regulator, sharing the single path transistor. The proposed chip is fabricated in the 0.18 μm BCD technology having die area of 16.0 mm2. A 94.2% power conversion efficiency with the load current of 800 mA is measured for the proposed active rectifier. View Full-Text
Keywords: wireless power receiver; active rectifier; multi-feedback low-dropout regulator; power conversion efficiency (PCE) wireless power receiver; active rectifier; multi-feedback low-dropout regulator; power conversion efficiency (PCE)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Khan, Z.H.N.; Park, Y.-J.; Oh, S.J.; Jang, B.G.; Park, S.-M.; Abbasizadeh, H.; Pu, Y.G.; Hwang, K.C.; Yang, Y.; Lee, M.; Lee, K.-Y. Design of Peak Efficiency of 85.3% WPC/PMA Wireless Power Receiver Using Synchronous Active Rectifier and Multi Feedback Low-Dropout Regulator. Energies 2018, 11, 479.

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