EL SEGUNDO, Calif. -- October 2005 - International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today announced that the Company’s IR3082 XPhase™ multiphase Control IC has won the “Top 10 DC-DC Award” from Electronic Products China (EPC) magazine. Readers’ votes, an independent judging panel and editors of EPC honored the control chip for the innovation it brings to a broad range of applications and substantial gains in performance.

Unlike other multiphase solutions that have a fixed number of phases, IR’s XPhase architecture enables scalable multiphase designs: The IR3082 uses five-bit voltage programming and only a few external components to simplify multiphase applications.

The IR3082 Control IC works with the IR3086A Phase IC and IR’s DirectFET® power MOSFETs to deliver an optimized multiphase DC-DC power solution for mid-range and high-end servers, voltage regulator modules (VRMs) and high current telecom applications. For example, a 12V, four-phase design using one IRF6617 control FET and one IRF6691 synchronous FET per phase provides 86% efficiency for an output of 80A.

“We are honored to be recognized by China’s distinguished engineering community, and pleased to see that IR’s leadership in developing new power management approaches and architectures is rapidly gaining acceptance around the world,” said Robert Grant, executive vice president of sales and corporate marketing, International Rectifier.

For more information about International Rectifier’s XPhase power architecture, including application notes and data sheets, visit www.irf.com or IR’s China web site at www.irf.com.cn. For more information about EPC or the award, visit http://www.epc.com.cn.

XPhase is IR's distributed multiphase architecture that consists of control ICs and phase ICs that communicate using a simple five-wire bus scheme. Phases can be added or removed without changing the fundamental design. The five-wire analog bus consists of bias voltage, phase timing, average current, error amplifier output and VID voltage. By eliminating point-to-point wiring between the control and the phase ICs, the five-wire bus shortens interconnections, and reduces parasitic inductance and noise. This simplifies PCB layout and gives a more robust design.