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IR's latest integrated DC/DC regulators shrinks silicon footprint by 70%

(Product News, 09 Jan 2008 )

International Rectifier (IR) recently released the SupIRBuck family of wide-input, single-output synchronous buck voltage regulators for high density, high performance data center and consumer applications. The IR38xx SupIRBuck family of point-of-load (POL) voltage regulators integrates IR's HEXFET trench technology MOSFETs and a high performance synchronous buck control IC in a compact 5x6mm power QFN package, shrinking the silicon footprint by 70 percent compared to discrete solutions, and offering about 10 percent higher full-load efficiency than competing monolithic ICs.

Designed for 4A, 7A and 12A of output load current at 600kHz switching frequency, the IR38xx operates from a wide input voltage range of between 2.5V to 21V, and provides output voltage as low as 0.6V. Common features include pre-bias start up, fixed 600kHz switching frequency, hiccup current limit, thermal shutdown, and precise output voltage regulation. The SupIRBuck family's thermally enhanced package with slim 0.9mm profile, allows mounting on the backside of the motherboard, making the devices ideally suited for space constrained, high-density server applications.

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