New Industry Products

International Rectifier Offers New IRF7901D1 N-Channel Dual FETKY

May 07, 2000 by Jeff Shepard

International Rectifier (El Segundo, CA) now offers synchronous-buck designers the industry's first component solution to demonstrate high efficiency at 1V output voltage.

As Internet appliances continue to demand dramatic increases in bandwidth capability, on-board performance and power-conservation requirements become even more demanding, thus driving operating voltages down to 1V. This major challenge for the dc/dc converter is met with the IRF7901D1, which integrates a high-side control FET, a low-side synchronous FET and parallel Schottky diodes in a single SO-8 package.

This new 30V N-channel Dual FETKY achieves up to 87 percent efficiency for applications demanding up to 5A peak at 1V output. According to the company, this power density is unattainable with any other solution. By internally connecting all power components, the new IRF7901D1 Dual FETKY significantly reduces the stray inductance that would occur in a discrete solution board layout.

The Dual FETKY also offers source and gate pins, reducing control loop inductance for improved gate drive. The IRF7901D1 Dual FETKY is an extension of the company's successful FETKY product line optimized for synchronous-buck dc/dc converters with a switching frequency of up to 300kHz.

The devices are available in industry-standard SO-8 surface-mount packages, priced at $0.65 in 100,000 quantities. Samples are available through the company's website, along with a complete design kit (IRNBPS2), allowing engineers to compare discrete and Dual FETKY solutions on the same board for multiple output voltages.