EFFICIENT WIRELESS POWER RECEIVER

Abstract

A two-mode DC/DC converter systems, for use in wireless power transmission receivers, and which allow the use of conventional logic circuits, operating at voltages well over IV, to efficiently drive DC/DC converter circuits even while being powered from the low voltage, even below IV, of a photovoltaic cell output. Two separate control modules may control the DC/DC converter, a first using a simple control for switching the converter, capable of being powered by the low voltages generated by the PV. Once a voltage above about 1.5V is generated at the output of the DC/DC converter, a second, more complex controller can become powered up, and takes control of the voltage conversion process, driving the converter more efficiently, and able to adapt its control function according to logical input instructions and sensor outputs received. The complex controller can operate independently, or in conjunction with the simple controller, to increase efficiency further.

CPC Classifications