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TDK develops ultra-thin receiving coil unit for wireless power transfer

TDK 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 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 transfer efficiency 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 Amperes, 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.

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