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Response to IHS iSuppli recent report – Hurdle to wireless power adoption lack of common standard
agree on the need for a standard similar to Wifi or Bluetooth to help accelerate
adoption of the wireless power technology. The Wireless Power Consortium (WPC)
was established by a group of companies in 2008 for the very purpose of
establishing an international standard for interoperable wireless charging. The
technology is based on inductive power transfer. The consortium currently has
80+ members including the likes of Nokia, Samsung, LG, Motorola, Philips,
Verizon wireless, Orange Telecom, Energizer, Texas Instruments, STE, Atmel etc.
See full member list @ http://www.wirelesspowerconsortium.com/member-list/.
WPC released its Version 1.0 of the spec in Fall 2010 with a logo as "Qi"
(pronounced Chee, meaning vital energy). Any charger carrying the Qi logo (easy
to indentify) will charge any device carrying the same logo. The first Qi
complaint product was released by Energizer
Instruments released its first generation wireless power evaluation kit at CES
2011, which allows engineers and designers to easily integrate wireless power
technology to existing or new low-power designs. The kit includes a
transmitter and a receiver, along with a complete reference design enabling
system designer to efficiently implement wireless power into their products.
In April 2011, TI released the second generation of wireless power technology
with the industry's first and smallest fully integrated receiver.
far as current adoption is concerned, just the growth in the WPC membership
indicates market acceptance and adoption, along with a wave of recent product
releases that are Qi compliant. Battery back covers for Verizon phones have been
demoed at various media events. LG has released a charger pad for Verizon while
HTC and Samsung have released LTE phones with optional back covers that are
complaint to the Qi standard.
indicated by a WPC release on July 13, 2010, the low-power specification gave
the group a starting point for which they can extend the Qi standard to medium
power applications (up to 120W). With this in mind, the scope and reach of
wireless power technology has only just begun.
Power Consortium (WPC) website: www.wirelesspowerconsortium.com
Power Planet web site: http://www.wirelesspowerplanet.com/wireless-power/
wireless power overview web page: www.ti.com/wirelesspower
Technology Overview video: http://www.wirelesspowerconsortium.com/technology/how-it-works.html
Power House is a part of the TI Blogs and covers power management ICs. Check back every day to the Power House blog on E2E for topics on designing and managing power supplies for a range of end equipment applications.
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