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Abstract
This paper presents a wireless power transfer system. The power of 0X mode mentioned in the traditional reconfigurable regulating rectifier is used as another output, which achieves high light-load power conversion efficiency (PCE) of the receiver. The voltage of the first output channel is regulated by a local constant on-time control, while another channel is regulated by the adaptive global power control. In this way, all of the received power is almost transmitted to the output. The maximum output power is 840mW with a peak PCE of 93.1%. Compared with the local voltage-regulation, the light-load efficiency improvement reached 17.5%.