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Siliconix MOSFETs offer 50 percent improved on-resistance

Posted: 06 Feb 2004 ?? ?Print Version ?Bookmark and Share

Keywords:siliconix? power mosfet? si4434dy? si7434dp? sum45n25-58?

Siliconix Inc. has disclosed that its trio of 250V n-channel TrenchFET power MOSFETs offer the lowest on-resistance available in SO-8, PowerPAK SO-8, and D2PAK packages for this voltage rating.

The Si4434DY (Little Foot SO-8), Si7434DP (PowerPAK SO-8) and SUM45N25-58 (D?PAK) are designed to serve as primary switches in dc-to-dc converters, including forward converters, half-bridge converters, and ac-to-dc converters and inverters, for telecom power supplies, distributed architectures and miniature power modules.

Both the Si4434DY and Si7434DP feature a maximum on-resistance value of 155 milliohms at a 10V gate drive and typical gate charge value of 34nC. In the low-thermal-resistance D?PAK package, the SUM45N25-58 features on-resistance on 58 milliohms, a gate charge value of 95nC, and a maximum junction temperature rating of 175C.

Samples and production quantities of the power MOSFETs are available with lead times of 10 to 12 weeks for larger orders.

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