EL SEGUNDO, CALIF. International Rectifier has simultaneously released two families of HEXFET power MOSFETs and a synchronous rectification IC that it says will boost efficiencies in 3.3-volt converters. The HEXFETs can cut more than 25 percent of the power device losses in manufacturers' 3.3-V, 200-watt product lines. This translates into a full-load efficiency gain of more than 4 percent for the typical converter, according to the company.
Primary FETs include IRFS-31N20D, IRS41N15D, IRFR-13N20D and IRFR18N-15D in either D PAKs or D2 PAKs. Secondary FETs are the IRF7463, 7455, 7456 and IRFBL3703.
The IR1175 synchronous-rectification IC provides optimized gate drive for MOSFETs configured as synchronous rectifiers in an an isolated dc/dc converter's secondary side. "The 1R1175 provides the designer with a simple and speedy path to more efficient and lower-cost dc/dc converters," said David Tam, vice president of the power IC group.
Pricing for the MOSFETs (primary side) begins at 46 cents each in lots of 10,000. MOSFETs optimized for the secondary side begin at 55 cents each in similar quantities. The IR1175 synchronous rectifier IC is priced at $2.95 each in 10,000 pieces. Volume production for all devices will commence in March.
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EETInfo No. 616