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Mass production is scheduled to begin in February 2007 at the Taiyo Yuden (Philippines), one of the company’s overseas production sites. Together with the NR6012, made for LCD displays for notebook PCs, the company plans to establish production capacity of 20 million units per month. The sample price is 30 yen per unit. The FPD market is expanding everywhere all over the world, and the trend is toward higher performance at lower prices. With this higher performance trend, the number of IC chips used in the FPD’s input-output circuits, image processing circuits, and information processing circuits, etc., is rising. Furthermore, power supply circuits are increasingly placed for each IC chip, for more efficient supply of power toward the goal of lower power consumption. However, input-output circuits, image processing circuits, and information processing circuits use high-priced multilayer boards, and the expansion of circuit area due to the increase in the number of power supply circuits has been a factor in pushing up FPD prices. The DC-DC converter’s main consistent part that also covers a large area is a choke coil, and naturally there have been requests for downsizing choke coils as a way to reduce the mounting area of the print circuit board. However, reducing the size of the wire-wound inductor used as the choke coil would sacrifice the rated current and Rdc, which would degrade the efficiency of the DC-DC converter. As a result, it was believed that shrinking the size while maintaining electrical characteristics was too difficult, and power inductors of 7mm to 10mm square range have been used.

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