Automotive Compatible Single Amplifier Multi-Mode Wireless Power for Mobile Devices

The proliferation of wireless power products for mobile applications is leading to consumer confusion and hindering adoption of this technology. A simple eGaN® FET based single amplifier topology capable of operating to all of the mobile device wireless power standards is presented. The high reliability of eGaN FETs further make this solution suitable for automotive applications. This paper presents the proposed topology with experimental verification that demonstrates excellent performance at both low frequencies (Qi & PMA standards) and high frequency (A4WP standard).