Single-stage rectification and regulation for wireless charging systems

摘要

A rectification and control circuit for a wireless power receiver includes a coil, a full wave rectifier circuit, and a regulator. The full-wave rectifier comprises a first pair of controllable rectifiers comprising a first transistor connected to a first terminal of the coil and a second transistor connected to a second terminal of the coil. The regulator is configured to regulate the switching of the full wave rectifier transistors so that the full wave rectifier (a) produces a rectified output for charging a battery of the wireless power receiver by rectifying current through the coil or voltage across the coil and (b) the rectified output regulates.