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Power Inductors Offer Higher Current & Lower Resistance for DC-DC Converter Choke Coils

14th January 2008

Taiyo Yuden

ES Admin

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TAIYO YUDEN's new CKP2520 multilayer chip power inductors achieve better performance compared to the company’s previous industry-leading CKP series parts. The -2R2 part, for example, offers DC resistance and rated current improvements of 35% and 44%, respectively. With an EIA 1008 case size footprint of 2.5 x 2.0mm and a maximum height of only 1.0mm, CKP2520 devices facilitate the design of thinner, higher-performance, multifunction cell phones, digital cameras and other battery-powered ultra-portable electronic equipment.

The continuing miniaturization trend in the feature-rich portable device market is driving the need for smaller, thinner choke coils and multiple DC-DC converters. In response, refinements to TAIYO YUDEN’s material science techniques generated component structural improvements that resulted in significant performance increases relative to case size.

Tighter electromagnetic field control and a proprietary new internal-electrode printing process that doubled the thickness of the internal conductor resulted in dramatically lower DC resistance (RDC) and higher current ratings (see table). New additions to the CKP2520 series, now under development, are expected to result in further performance gains in the 1008 and smaller case sizes.