Operating Frequency Based Power Level Altering In Extended Range Wireless Power Transmitters

Abstract: a power transmitter for wireless power transfer includes a control and communications unit configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver and including a pulse width modulation (pwm) signal generator for determining and selecting the operating frequency from the operating frequency range. the power transmitter further includes an inverter circuit configured to receive a direct current (dc) power and convert the input power to a power signal, coil configured to transmit the power signal to a power receiver, the coil formed of wound litz wire and including at least one layer, the coil defining, at least, a top face, and a shielding comprising a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.

Inventor(s): Jason Green, Andrew Kovacs, Mark Melone, Md Nazmul Alam

CPC Classification: H02J50/80 (involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices)

Search for rejections for patent application number 20250233463