無線充電系統與晶片設計

Wireless Charging System and Chip Design

何儀修(I-Hsiu Ho)

指導教授 ： 邱弘緯

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2010年)

摘要

本論文係利用諧振與線圈的電磁耦合原理，將能量以無線方式傳遞，使接收到能量的裝置能得以進行充電。
本論文分為兩個部分討論：供電端、充電端。在供電端部分，採用E類放大器，配合耦合線圈的匹配，對E類放大器的被動元件大小做最佳化的調整。充電端部分，我們利用tsmc 2P4M 0.35umCMOS製程完成一顆無線充電SoC，SoC為內容包含大功率高效率的交流-直流轉換器、鋰電池充電器、八位元的連續漸進式類比數位轉換器以及SoC所需的時脈來源電路及與供電端溝通的ASK調變電路，其中交流-直流轉換器效率可達85%，鋰電池充電效率達71%，總晶片面積為2.5mm*2.5mm。
本論文SoC為目前可轉換功率最高且系統整合度最為完整之無線充電晶片。附錄為無線能量傳遞技術之應用所發表的兩篇研討會論文：一為2009 IEEE VTC結合無線充電及胎壓感測的投稿論文，另一篇為2010 IEEE ISSCC利用能量傳遞完成植入式神經刺激晶片的投稿論文。

關鍵字

無線充電 ； 非接觸式能量傳輸 ； RFID

並列摘要

This Thesis utilizes the resonant and the coils coupling theory to implant wireless enrgy delivery, and the device can be charged.
This Thesis distributed two parts to discusse: power source and charging terminal. At the power source part, which adapte Class-E power amplifier with coils coupling to transmit RF power. The circuit for the whole power transmission is modeled so as to acheieve the optimal parameters for a high efficiency. In the charging terminal part, we finish a wireless charging SoC chip by utilizing tsmc 2P4M 0.35um CMOS technology. It includes high power RF-DC rectifier, Li-ion battery chrger, 8bits successive approximation analog/digital converter, clock recovery and LSK modulator. The RF-DC rectifer’s efficiency achieved 85%, the Li-ion battery charging efficiency is 71%, the whole chip size is 2.5mm * 2.5mm.
This SoC has the highest power convertion rate and it’s the most complete wireless charging SoC in the world presently. And the appenedixes contains two conference papers which base on wireless power transmission technology.

並列關鍵字

Wireless charger ； Contactless power transmission ； RFID

參考文獻

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