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IR MOSFET chipset targets 105A conversion circuits

Posted: 09 Sep 2003 ?? ?Print Version ?Bookmark and Share

Keywords:international rectifier? ir? mosfet? directfet? irf6608?

International Rectifier (IR) has introduced what they claim is the smallest control and synchronous MOSFET chipset for next-generation VRM10.x high-current synchronous buck converters where small size, high efficiency, and maximum thermal conduction are mandatory.

The IRF6608 is 50 percent smaller than standard SO-8 package versions available in the market, and is the first HEXFET MOSFET design that is housed in a double-side-cooled, surface-mount DirectFET "S" package. The profile is 0.7mm, compared to SO-8's 1.75mm.

The IRF6618 has a typical on-resistance of 1.7mW and a maximum of 2.2mW, a 25 percent improvement compared to similar devices on the market, and is suitable for the synchronous MOSFET applications, where low conduction loss is most important. The product can also be used for secondary side synchronous rectification in high current, isolated dc-dc converters.

The IRF6608 is priced at $1.03 each, while the IRF6618 is available for $1.52 each in 10,000-unit quantities.





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