San Diego, Calif. Designed to replace two discrete inductors, Pulse, a Technitrol Company, says it has developed the industry's first integrated ferrite-bead inductor. The PA0766NLT Power Bead device consists of two independent inductors integrated into a single core structure without magnetic coupling between the two inductors.
Offering designers a smaller footprint, improved circuit performance and lower PC-board costs, the new PA0766NLT inductor, for example, when replacing two surface-mount powdered iron inductors, provides a 20% savings in board space, a 47% lower direct current resistance (DCR), an 80% lower core loss and a cost reduction of 25%. In addition, it offers reduced AC proximity loss in the winding.
Measuring 0.55 x 0.53 x 0.28 in. (14.0 x 13.5 x 7.0 mm), the PA0766NLT Power Bead series is available in four different inductance values and current ratings. Device values range from 296 nH at 38 amps (A) peak current per phase to 568 nH at 18.5 A peak current per phase. The two independent inductors can be connected in series or parallel to form a single inductor with an inductance and current range from 150 nH at 76 A peak current to 770 nH at 25 A peak current. The DCR is rated at 0.9 mΩ maximum per phase. The RoHS compliant part is rated for operation up to 130°C.
For more detailed technical specifications, see datasheet P624 at the company's web site.
This new series of devices can be used in any multi-phase circuit applications. Although the devices will typically be used for double data rate (DDR) memory, multi-phase CPU power, and other desktop, portable and server computing applications, it can also be used in 2- and 4-phase telecommunications power systems.
Parts in this series are only available in tape-and-reel (indicated by a "T" suffix on the part number).
Prices average $0.46 per unit for a quantity of 100,000 units per order. Prices vary by quantity, configuration and shipping destination.
Call (858) 674-8100