A CMOS Active Rectifier with Efficiency-Improving and Digitally Adaptive Delay Compensation for Wireless Power Transfer Systems

Energies

Junye Ma¹  Xian Tang¹  Yichen Zhang¹ 

[1] Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China;

关键词: adaptive delay compensation;    active rectifier;    wireless power transfer;   

DOI  :  10.3390/en14238089

来源: DOAJ

【 摘 要 】

A CMOS active rectifier with digitally adaptive delay compensation for power efficiency improvement is presented in this work. The power transistors are turned on and turned off in advance under the control of the regenerated compensation signals, which are generated by the proposed compensation control circuit; therefore, the reverse current is eliminated, and the efficiency is increased. Simulation results in a standard 0.18 μm CMOS process show that the turn-on and turn-off delay of the rectifier is effectively compensated. The power efficiency is up to 90.6% when the proposed rectifier works at the operation frequency of 13.56 MHz.

【 授权许可】

Unknown