Apple Inc.
Received wireless power regulation

Abstract:

An inductive power receiver for an inductive power transfer system comprising: a power pick up stage including a receiving coil for receiving power transmitted by a transmitter; a load stage connected to the power pick up stage; a power regulation stage configured to provide a voltage in series with the power pick up stage wherein the voltage switches between at least a first amplitude and a second amplitude that is different from the first amplitude; and a controller configured to control the power regulation stage to regulate the power delivered to the load stage.