San Diego, Calif. Pulse, a Technitrol Company, says it has introduced the industry's first series of through-hole power bead inductors for desktop architectures. The PA1894NL and PA2080NL series devices are said to provide improved efficiency, tighter direct current resistance (DCR), a smaller footprint and no thermal aging.
The PA1894NL and PA2080NL series devices use a single-turn conductor with a ferrite core instead of a multi-turn conductor wound on a powdered iron toroid core. This improved structure allows for a 2 to 3 percent increase in Vcore voltage regulator efficiency, a 35 to 55 percent reduction in inductor footprint, and enables the tightest direct current resistance (DCR) tolerance available in the industry at ±4 percent, according to Pulse.
In addition, the use of ferrite core material makes these inductors immune to thermal aging, which increases system reliability, added Pulse.
The PA2080NL series measures 10.5 mm long x 7.5 mm wide x 8.9 mm high maximum with inductance values ranging from 140 nanohenries (nH) to 220 nH, a DCR of 0.49 mΩ ±4 percent, and up to 80 Amps peak current (Apk).
The PA1894NL series, which measures 10.0 mm long x 9.0 mm wide x 10.0 mm high maximum, offers an inductance range of 185 nH to 335 nH, a DCR of 0.64 mΩ ±4 percent, and up to 72 Apk. The footprint of the inductor series is designed to fit the pin-pitch of existing toroid solutions for easy test and verification. The operating temperature for both series is -40° to 130°C.
The power bead inductors are used in power supplies for microprocessors (Vcore power circuit) in desktop, gaming, server, and workstation applications. They are RoHS compliant. Pulse also offers surface-mount power bead inductors.
Pricing: Parts in this series are available in trays, with prices averaging $0.25 per unit for a quantity of 100,000 units per order. Pricing varies depending on volume, configuration, and shipping destination.
Product information: PA1894NL and PA2080NL
Pulse, 1-858-674-8100, www.pulseeng.com