JSSC 2012第11期RF & Wireless0.18μm CMOSEnergy Harvesting

1-W 33163-V Boosting Wireless Power Transfer Circuits With V ector Summing Power

提出一种用于大容量非接触式存储卡的无线电力传输系统，通过矢量求和技术同时提升电压和传输功率。

3.3V至16.3V电压提升，1W功率传输，50%总效率，功率控制环路响应时间小于35μs

无线电力传输矢量求和非接触式存储卡功率效率高压CMOS

▸消除数据写入闪存所需的DC-DC转换器或电荷泵电路

▸采用矢量求和技术控制发射功率和次级侧电压

▸减少组件数量和BOM成本并提高总功率效率

Abstract

This paper presents SD-ca rd-size wireless power transfer system for large-vol ume contactless memory cards. Voltage is boosted simultaneously with power transfer, which eliminates the dc–dc converter or charge-pump circuit for data write operation into the ﬂash memory chip. The proposed ap- proach reduces the number of components and BOM cost an d improves the total power ef ﬁciency. A vector summing technique is proposed to control the transmitting power and secondary side voltage. The transmi