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SmartRectifier IC tailored for digital computing systems

Posted: 17 Apr 2006 ?? ?Print Version ?Bookmark and Share

Keywords:International Rectifier? IR? IR1167 SmartRectifier IC? MOSFETs?

International Rectifier (IR) introduced the IR1167 SmartRectifier IC for AC/DC power converters for laptops, mini-PCs, LCD and PDP televisions, game systems and other digital computing and home entertainment systems. The SmartRectifier IC promises to simplify and improve efficiency in secondary synchronous rectification (SR) in high power flyback and resonant half-bridge converter circuits, enabling smaller and cooler designs.

The IR1167 IC uses IR's proprietary HVIC technology, making it compatible with all MOSFET gate types and offers direct connection to IR's wide range of 30V to 200V SR MOSFETs. Benefits of the IR1167 are further enhanced when used with IR's MOSFETs featuring optimized on-resistance and gate charge characteristics, such as the IRF7853, IRFB4110 and IRFB4227, sais the press release.

"IR's new SmartRectifier IC employs a new technique for precise, direct sensing of voltage thresholds across the SR MOSFETs, allowing fast, accurate control to minimize power losses," said Stephen Tsang, senior vice president of Asia sales at IR. "The IR1167 can increase overall system efficiency by 1 percent and reduce MOSFET temperature by 10 degrees, while slashing SR parts count by 75 percent."

The SmartRectifier technique also halves the losses dissipated in the SR MOSFET. This reduces the number of MOSFETs needed or allows a change from large TO-220 packages to small, surface mount SO-8 parts.

The IC is available in either SO-8 or DIP-8 packages, which are both Pb-free and RoHS compliant.

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