A High-Efficiency Triple-Mode Active Rectifier with Gate Charge Recycling Technique for Wireless Power Transfer System

This paper presents an active rectifier design with a gate charge recycling technique. Gate switching increases the losses of rectifier, therefore, as way to reduce losses, technique is proposed. The output power 15 W achieved enable rapid charging using three standards for wireless mode, magnetic induction (WPC and PMA), resonance (A4WP). Power-sharing used lower amount consumed by each standard mode core. In WPC, PMA zero current sensing (ZCS) has been while in A4WP digitally controlled delay adjustment (DCDA) employed. By block, efficiency considerably improved due consumption. It aims increase overall reusing loss it effectiveness allowing modes operate one single chip. proposed combines charge-recycling techniques improve efficiency. layout size $4.75~\mu \text{m}^{2}$ . 98.6 % method (WPC/PMA) at W, 94.86 (A4WP) level W. chip fabricated BCD notation="LaTeX">$0.18~\mu \text{m}$ CMOS process.