IR Introduces Mid-Voltage MOSFETs Optimized for Switching Converter Applications in Netcom Systems.

EL SEGUNDO, Calif. -- International Rectifier, IR(r) (NYSE:IRF), a world leader in power management technology, today introduced new N-channel 60, 80 and 100V HEXFET(r) MOSFETs for switching converter applications used in today's networking and communications systems that improve the figure of merit for resistance multiplied by charge by as much as 36%. IRF7853PbF, IRF7854PbF, and IRF7855PbF are designed for AC-DC secondary-side synchronous rectification, isolated medium-power DC-DC applications.

"A MOSFET's on-state resistance and total gate charge performance have a first-order effect on overall circuit efficiency. Our three new SO-8 devices use IR's Trench MOSFET technology to deliver substantial reductions in RDS(on) and Qg to bring significant system-level benefits to converter circuits," said Mario Battello, marketing manager for SMPS Products at International Rectifier.

Together with IR's low-voltage MOSFETs and controller ICs, these mid-range MOSFETs form secondary-side chipsets for medium-power, converter applications. In addition, when combined with the SmartRectifier(tm) IR1167 in AC-DC power supplies such as laptop adaptors, for example, these new SO-8 devices can replace two of their large TO-220 MOSFET counterparts and their associated heatsinks, improving overall system efficiency by as much as 1%.

The 100V IRF7853 is also optimized for wide-range communication bus input (36V to 75V) primary-side bridge topologies in isolated DC-DC bus converters. The 80V IRF7854 is useful for active ORing and hot-swap applications. All three of the MOSFETs are designed for secondary-side synchronous rectification in 5-19Vout flyback converter and resonant half-bridge applications and are suitable for isolated DC-DC applications as primary-side switches in forward or push-pull topologies for 18-36Vin isolated DC-DC converters.

Data sheets for these devices are available on the Web site at http://www.irf.com/whats-new/nr060517.html

Availability and Pricing

These HEXFET(r) MOSFETs are available immediately. Pricing in 10,000-unit quantities begins at US $1.20 each for IRF7853, US $1.06 each for IRF7854, and US $1.04 each for IRF7855.

About International Rectifier

International Rectifier (NYSE:IRF) is a world leader in power management technology. IR's analog and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and reduce energy waste from motors, the world's single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR's power management benchmarks to power their next generation products. For more information, go to www.irf.com.

Patent and Trademark Notice

IR(r), HEXFET(r), and SmartRectifier(tm) are trademarks of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.