By Majeed Ahmad, contributing writer
KEMET has launched a new range of SMD-based composite metal power inductors for use in DC/DC converters utilized in a variety of devices such as notebook computers, tablets, servers, and HDTVs. The new devices are part of the METCOM series of inductors developed for more efficient DC-to-DC switching power supplies and other power applications that mandate electromagnetic interference (EMI) filtering.
The composite metal core in these new devices offers high-current-saturation characteristics, which, in turn, allow the inductors to maintain functionality during the large ripple currents typically found in modern power applications. High permeability enables low values of DC resistance (DCR), and that significantly reduces self-heating during high-current operation, thus increasing system efficiency and lowering the need for thermal management.
The new METCOM inductors also increase the efficiency of power designs with a shielded construction that contains the magnetic flux within the inductor body. The shield improves EMI performance and eliminates interference with surrounding circuitry.
The METCOM series comprises a total of 102 devices that cover an inductance range from 0.10 µH to 47.00 µH and offer DCR values as low as 1.5 mΩ. The inductors can support currents up to 35.4 A and operating temperatures between −55°C and 155°C. These inductors, with a footprint as small as 5.3 × 5.0 mm and profiles as low as 2.0 mm, are targeted at densely packed power applications.
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