Patent ID: 9634514
Date: 2017-04-25
CPC Classifications: H02J

Claim:
1. A rectification and regulation circuit for a wireless power receiver, the rectification and regulation circuit comprising: a coil physically separate from a primary coil of a power transmitter, such that magnetic coupling between the coil and the primary coil varies as a function of the physical proximity of the two coils; a full-wave rectifier physically separate from the power transmitter and having a first pair of controllable rectifiers comprising a first transistor connected to the first terminal of the coil and a second transistor connected to the second terminal of the coil; and a control unit physically separate from the power transmitter and operable to control switching of the transistors of the full-wave rectifier so that the full-wave rectifier (a) generates 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) regulates the rectified output independent of any regulation done at the power transmitter.