News Release from: International Rectifier
Edited by the Electronicstalk Editorial Team on 1 July 2002
MOSFETs stay cool in telecomms supplies
International Rectifier has three new high-current 150 and 200V-rated HEXFET power MOSFETs optimised for the primary side of 48V isolated DC/DC convertors.
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International Rectifier has three new high-current 150 and 200V-rated HEXFET power mosfets optimised for the primary side of the 48V isolated DC/DC convertors that power the latest broadband networking equipment. The new mosfets deliver up to 100% more current and have up to 50% lower on-resistance than competing devices in the same footprint. These performance improvements provide the highest efficiency for the primary side and result in operating temperatures that are as much as 25C lower compared with previous generation devices.
Higher current levels reduce or eliminate the need to parallel multiple devices, resulting in simpler designs, smaller size and lower part count.
With a lower running temperature, the new mosfets require smaller heat sinks, which further decreases the converter's size.
The designer can use these benefits to increase the power level in an existing design's form factor.
Lower device operating temperature also translates into longer life to meet the requirements of a market whose customers expect 100% service availability.
The three new devices are the 200V, 94A IRFBA90N20D in a Super-220, the 200V, 94A IRFP90N20D in a TO-247, and the 150V, 61A IRFB61N15D in a TO-220.
Both the IRFP90N20D and the IRFBA90N20D have industry leading performance with on-resistance as low as 23mohm.
The Super-220 package of the IRFBA90N20D has an extended lead-frame that enables it to carry currents of up to 94A in the same outline as a standard TO-220.
The IRFB61N15D also offers 10% lower on-resistance and 20% higher current handling capability than the nearest competing device in a TO-220 package, thus increasing efficiency and power density.
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Copyright © 2000-2006 Pro-Talk Ltd, UK. Based on news supplied by International Rectifier - Subject: IRFBA90N20D, IRFP90N20D and IRFB61N15D
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