Product category: Discrete Power Devices
News Release from: International Rectifier | Subject: IRFB4710 and IRFS4710
Edited by the Electronicstalk Editorial Team on 24 July 2002
Higher-current MOSFETs boost convertor density
A new pair of 100V HEXFET power MOSFETs can increase power density in the 48V-input half- or full-bridge topologies of DC/DC convertors used in telecomms and datacomms equipment
A new pair of 100V HEXFET power mosfets can increase power density in 48V-input half- or full-bridge topologies used in the high-performance DC/DC convertors required for telecomms and datacomms equipment. The new IRFB4710 device is rated at 75A in the TO-220 package, or 30% higher current than previous generation devices.
This article was originally published on Electronicstalk on 24 July 2002 at 8.00am (UK)
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This means that designers can shrink the size, weight and cost of power supplies by paralleling fewer devices to achieve desired current ratings.
With the growth in the volume of data transmitted, telecommunication and data communication equipment power consumption continues to rise.
The DC/DC convertors providing these increasing power levels must do so in the same or smaller footprint.
The new IRFB4710 and IRFS4710 mosfets have a 40% lower on-resistance than previously available devices, resulting in higher efficiency and lower operating temperature.
In-circuit testing shows that four IRFB4710s run 20C cooler at 350W compared with industry-standard devices.
With significant space and operating costs currently devoted to keeping telecom equipment from overheating, these new devices offer the opportunity to reduce heatsink size and cooling cost.
Cooler running systems increase reliability, which is critical to an industry that cannot afford to have equipment down when so many people depend on 100% service availability.
Jorge Llorens, International Rectifier Marketing Manager for Netcom/Datacom Products, DC/DC Sector, said, "The new IRFB4710 mosfet offers a new alternative to designers of high performance telecomms/datacomms DC/DC power systems.
The IRFB4710 device can be used to shrink power supply size, weight and cost by increasing the power density in watts per cubic inch.
The IRFB4710 can also be used to increase reliability by reducing power supply temperature.
International Rectifier once again is proving its commitment to the telecommunication and datacommunication industry by providing leading edge technology".
The IRFS4710 mosfet, in a D2Pak package, is optimised for 100-300W board-mounted power systems.
The IRFB4710, in a TO-220 package, is designed for 3 to 5kW shoebox type power supplies used in wireless basestations.
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