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IR MOSFET improves Class D audio performance

Posted: 13 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:international rectifier? ir? irf6665? directfet mosfet? mosfet?

International Rectifier (IR) recently released the IRF6665 DirectFET MOSFET for medium power class d audio amplifiers.

According to the company, the device parameters are tuned specifically for improved audio performance such as efficiency, total harmonic distortion (THD) and power density. Applications for Class D amplifiers range from battery-powered portable products to high-end professional amplifiers, musical instruments and car and home multimedia systems.

In addition to application-tuned silicon, IR's DirectFET packaging technology enhances performance in Class D audio amplifier circuits by reducing lead inductance, which improves switching performance and reduces EMI noise. Thermal efficiency enables 100W operation into 8? without a heatsink. Eliminating heatsinks shrinks circuit size and bulk, giving designers more layout flexibility and reduces amplifier cost, added the company.

"Combining IR's unique DirectFET packaging with our ability to tune device parameters for specific applications pushes the envelope of Class D audio performance for higher efficiency, improved EMI and higher power density," commented David Tam, VP for the company's Consumer and Industrial Sector Business.

The new IRF6665 Class D audio DirectFET MOSFET is already available for 52 cents each in 10,000-unit quantities.

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