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Tiny MOSFET boasts low on-resistance

Posted: 13 May 2009     Print Version  Bookmark and Share

Keywords:power MOSFET  on-resistance  PowerPAK  adaptor switch 


Vishay Intertechnology, Inc. has introduced a 20-V p-channel TrenchFET Gen III power MOSFET with the lowest on-resistance ever achieved in the PowerPAK 1212-8 type package.

With a compact 3.3-mm by 3.3-mm footprint, the device saves space by offering one-third the footprint area of the PowerPAK SO-8 or SO-8 type packages.

The new Si7615DN offers an ultra-low on-resistance of 3.9 mΩ at 10 V, 5.5 mΩ at 4.5 V, and 9.8 mΩ at 2.5 V. The low on-resistance of the TrenchFET Gen III MOSFET translates into lower conduction losses, allowing the device to perform switching tasks with less power than any previous p-channel power MOSFET on the market.

The Si7615DN will be used as the adaptor switch and for load switching applications in notebook computers, netbooks, and industrial/general systems. Adaptor switches (switching between the adaptor/wall power or the battery power) are always on and drawing current. The lower on-resistance of the Si7615DN translates into lower power consumption, saving power and prolonging battery life between charges.

To meet the needs of individual applications, the p-channel TrenchFET Gen III packaging options offer designers a choice between the maximum drain current and power dissipation of the PowerPAK SO-8 (60% and 75% higher, respectively, than the SO-8) or the space savings provided by the PowerPAK 1212-8.

The Si7615DN frees designers from having to rely on 30-V power MOSFETs, which until recently were the only p-channel devices available within this very low on-resistance range. Among competing 30-V devices, the lowest available p-channel on-resistance with the area of the PowerPAK 1212-8 is 14.4 and 27 mΩ at gate drives of 10 V and 4.5 V, respectively.

The device is 100 % Rg-tested and halogen-free in accordance with IEC 61249-2-21.

Samples and production quantities of the new Si7615DN TrenchFET power MOSFET are available now, with lead times of 10 to 12 weeks for larger orders.

Visit Power Design India for tech articles and app notes on MOSFETs!

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