Wireless power transfer coil unit: Development of ultra-thin receiving coil unit for wireless power transfer

Jul 10, 2012

TDK Corporation announced the development of a TDK wireless power transfer coil unit designed for Smartphones and other mobile devices. The receiving coil designed for integration in smartphones and similar represents an industry-leading achievement, featuring a thickness of a mere 0.57 mm.

The development reflects TDK's extensive expertise in fields such as magnetic materials technology and process technology, and involved the creation of a unique, extremely thin and flexible metal magnetic sheet. As a result, the coil unit not only is ultra thin and lightweight, it also is highly resistant to shock and therefore provides excellent reliability. Furthermore, in spite of its 0.57 mm profile, the coil's design minimizes the tendency towards rising resistance and achieves a power that allows clearing the requirements of the WPC "Qi" standard. The low height of the unit is a key aspect for use in Smartphones. At this point, output current is on the order of 0.5 to 0.6 , but an even thinner 0.50 mm type with equal or better output current is already in development, with a view towards starting mass production in 2013.

As smartphones incorporate more and more functions, their also tends to increase, making charging of the battery a more frequent requirement. With the aim of establishing an infrastructure environment that allows easy charging anywhere at any time, the WPC and other promotional organizations are working towards the standardization of wireless power transfer. To contribute to these efforts and meet the expected rise in demand in the near future, TDK is developing and offering products that reflect its extensive know-how in a number of relevant fields. This includes technology and process technology, winding pattern technology expertise gained through the manufacture of a wide range of various kinds of coils, as well as magnetic circuit design technology.

Explore further: Pirate Bay founder jailed for hacking Danish data

add to favorites email to friend print save as pdf

Related Stories

Multilayer ceramic coils with the highest inductance

Aug 26, 2011

TDK-EPC, a group company of TDK Corporation, presents the TDK MLG0603S series of multilayer ceramic coils with the world’s highest inductance values. These 0603 inductors feature an inductance of up to ...

Cable-free charging of electric cars via coils

Apr 11, 2011

In the future, motorists will no longer need a cable to recharge the batteries of their electric cars, thanks to a development project for inductive charging, which Siemens presented at Hannover Messe 2011. ...

Flexible and transparent OLEDs from TDK (w/ Video)

Oct 06, 2010

(PhysOrg.com) -- Flexible and translucent organic displays have been developed by TDK for use in “bendable” mobile phones and other gadgets, and the bendable display is expected to go into mass production ...

Recommended for you

HP announces Sprout—a truly innovative workstation

10 minutes ago

Hewlett-Packard Co has announced the development of a new kind of computer workstation—one that combines the power of a desktop computer with 3D scanning and projection—and adds a second display surface ...

Q&A: 'Interstellar' filmmaker Nolan on his robots

30 minutes ago

In his secrecy-shrouded sci-fi extravaganza "Interstellar," filmmaker Christopher Nolan isn't just taking audiences to outer space. He's also sending a couple of robots along for the ride—and they're just ...

Tweet much to gain popularity is an inefficient strategy

49 minutes ago

The imbalanced structure of Twitter, where some users have many followers and the large majority barely has several dozen followers, means that messages from the more influential have much more impact. Less ...

Humans are largely the problem in cyber security failures

1 hour ago

When people think about cyber and information security they often think about anti-virus software and firewalls; however, according to an information security expert from the University of Adelaide, organisations would become ...

Pirate Bay founder jailed for hacking Danish data

1 hour ago

A Danish court on Friday sentenced the Swedish founder of file-sharing site The Pirate Bay to 3½ years in prison after he was found guilty of hacking into a private company handling sensitive information for Danish authorities.

Five ways to fight online abuse with good manners

1 hour ago

Online and social media's capacity to enable anyone to communicate their ideas and views is much celebrated. So why do so many people feel nervous about getting involved with online debate?

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

unknownorgin
not rated yet Jul 19, 2012
This same type of coil was used on vacume tube era radios and later on metal detectors and there is a photograph of tesla experimenting with this type of coil.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.