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Siliconix MOSFETs target dc/dc conversion apps

Posted: 22 Jul 2002 ?? ?Print Version ?Bookmark and Share

Keywords:vishay siliconix? si4362dy? si4892dy? power mosfet? dc conversion mosfet?

Vishay Siliconix has launched a pair of 30V power MOSFETs that are targeted for use in dc/dc conversion in single of multiphase power supply circuits of laptops and game machines.

The Si4362DY offers an on-resistance rating of 6.25mW at a 4.5V gate drive17 percent lower than competing devicesand is suited for low-side operation, reducing conduction losses and boosting efficiency.

It also features a gate-drain-to-gate-source charge ratio of 0.625 percent better than competing devicesand gate resistance of 1.3W.

Suited for high-side operation, the Si4892DY features a typical gate charge of 8.7nC, minimizing switching losses, and on-resistance of 20mW at a 4.5V gate drive. It also has a gate resistance of 1W, an on-resistance times gate charge product of 139.2, and faster turn-on times.

Working together, the two MOSFETs are claimed to provide increased efficiency, longer run times, and cooler operation for portable computers and game consoles. The devices' gate-drain-to-gate-source charge ratio also allows designers to incorporate less-expensive MOSFET drivers into end products, further reducing component costs.

The Si4362DY and Si4892DY are shipped in SO-8 packages.

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