Power Electronics

New Inductor Delivers Low DC Resistance

Vishay Intertechnology Inc. has extended the IHLP family of low-profile, high-current inductors with a new device that offers a low dc resistance (DCR) per µH in a 0.402-in. × 0.402-in. [10.2-mm × 10.2-mm] package with a low 0.157-in. [4.0-mm] height profile. The new IHLP-4040DZ-15 has DCR values down to 0.50 mΩ at 0.19 µH. This new power inductor is intended for dc-dc converter applications in end products, including next-generation mobile devices and point-of-load (POL) converters. It also will be used in distributed power systems and to regulate power for field programmable gate arrays (FPGAs).

The IHLP-4040DZ-15 handles high transient current spikes without saturation and operates over a frequency range up to 1 MHz. Saturation current and typical DCR values for the inductor range up to 44 A and from 0.50 mΩ to 5.20 mΩ, respectively, over an inductance range of 0.19 µH to 2 µH. Inductance tolerance for the new device is 20%. The RoHS-compliant IHLP-4040DZ-15 features a 100% lead (Pb)-free, shielded, composite construction that reduces buzz noise to low levels. Pricing in 500-piece reels starts at $0.65 per piece for quantities of 10,000 pieces.

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