Over 70% Efficient Resonant Wireless Charging Demo’d at CES

January 07, 2015 by Power Pulse1595211359

PowerbyProxi, Inc. demonstrated yesterday at the International Consumer Electronics Show (CES) a resonant wireless power industry with a smartphone solution that demonstrates peak system efficiency over 70%. The latest Proxi-2D™ system also showcases a number of advanced features expected to be included in the new resonant Qi v1.2 specification including multi-mode functionality, which allows for both resonant and inductive wireless charging.

PowerbyProxi measures system efficiency by comparing the dc input to the transmitter and the dc power output at the receiver – an important method to capture the full system efficiency including transmitter, receiver and coupling efficiencies. PowerbyProxi believes efficiency is a critical performance criteria for wireless charging systems that is becoming increasingly crucial as smartphone and phablet charge requirements increase. Lower system efficiencies will lead to greater power loss and extended charge times as smartphone power requirements extend from 3.5W to near 10W.

"We have yet to see anyone else in the industry answer direct questions about the efficiency of their resonant systems, let alone demonstrate resonant system efficiencies in excess of 70%" said Greg Cross, CEO of PowerbyProxi. "We believe PowerbyProxi continues to lead in this area and are solving the technical challenges that others have yet to address," said Cross.

PowerbyProxi will demo its new EVK-2 system efficiency at CES at Showstoppers, on January 6, 2015, at The Wynn, Las Vegas. Also on display will be PowerbyProxi's latest system feature for advanced object detection that highlights the ability to differentiate between foreign and friendly objects placed on the transmitter. This feature will enable detection of metal objects in larger, multi-device charging systems.

PowerbyProxi is an active contributing member of the Wireless Power Consortium (WPC) Steering Committee and committed to developing an advanced and safe standard for wireless charging. Continued demonstrations will be available at the WPC booth in the South Hall of the Las Vegas Convention center, booth SL-2.