International Rectifier Debuts Two New Families of HEXFET Power MOSFETs
International Rectifier (El Segundo, CA) recently announced it now offers two new families of HEXFET power MOSFETs that are designed to provide high efficiency for the primary and secondary sections of isolated dc/dc converters with outputs of 3.3V.
According to the company, on the primary side of a dc/dc converter, a new planar technology chosen for the primary MOSFETs is designed to provide the best efficiency trade off between switching and conduction losses. The company claims that using these primary-side MOSFETs, IRFS31N20D, IRFS41N15D, IRFR13N20D and IRFR18N15D, can yield as much as three percent improvement in total end converter efficiency versus competitive solutions. On the secondary side of a forward converter, IRF7463, IRF7455, IRF7456 and IRFBL3703 are designed to increase end efficiency of the whole converter close to one percent.
"These new MOSFETs are just part of International Rectifier's overall commitment to provide benchmark performance and solutions for the dc/dc market," said Alex Lidow, CEO of International Rectifier. "The MOSFETs fit perfectly with a new synchronous rectification IC just being introduced, as well as MOSFETs optimized for synchronous buck applications that we introduced earlier. Our goal is to provide the best possible component set for dc/dc converters to maintain efficiency at acceptable levels as logic voltages continue to drop."
In quantities of 10,000, pricing for the new MOSFETs for the primary side of a forward converter begin at $0.46 each, while MOSFETs optimized for the secondary side start at $0.55 each in similar quantities. Samples and data sheets are currently available, with volume shipments commencing in March 2000.
