INTERNATIONAL RECTIFIER - THE POWER MANAGEMENT LEADER

IR’s SupIRBuck® Family of Integrated DC-DC Regulators Shrinks Silicon Footprint by 70 Percent; Simplifies Embedded Power Designs

EL SEGUNDO, Calif. — International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today introduced the SupIRBuck® family of versatile wide input, single output synchronous buck voltage regulators for high density, high performance data center applications.

The SupIRBuck family of point-of-load (POL) voltage regulators integrates IR’s high performance synchronous buck control ICs and benchmark HEXFET® trench technology MOSFETs in a compact 5mm by 6mm Power QFN package, shrinking the silicon footprint by 70 percent compared to discrete solutions, and offering between 8 to 10 percent higher full-load efficiency than competing monolithic ICs.

“Because SupIRBuck has a unique, scalable common footprint, designers can simply ‘cut and paste’ their design to significantly reduce risk and enable faster-time-to market,” said Tim Phillips, vice president of IR’s Enterprise Power Business Unit. “The addition of the SupIRBuck POL family to IR’s industry-leading XPhase® and DirectFET® multiphase architecture allows us to provide the most efficient and complete power solution for the data center including enterprise servers,” he added.

Designed for four, seven and 12 amps 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. Optional features include tracking, programmable power good, and 300kHz switching frequency to provide an additional two amps of output current capability. 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.

Specifications

Part Number Vin Max/Min Vout Max/Min Max Current Fsw Package Features
IR3812MPBF 21/2.5 12/0.6 4A 600KHz 5 mm x 6mm QFN OCP + OTP + TRACKING
IR3822MPBF 21/2.5 12/0.6 4A 600KHz 5 mm x 6mm QFN OCP + OTP + PGOOD
IR3822AMPBF 21/2.5 12/0.6 6A 300KHz 5 mm x 6mm QFN OCP + OTP + PGOOD
IR3811MPBF 21/2.5 12/0.6 7A 600KHz 5 mm x 6mm QFN OCP + OTP + TRACKING
IR3821MPBF 21/2.5 12/0.6 7A 600KHz 5 mm x 6mm QFN OCP + OTP + PGOOD
IR3821AMPBF 21/2.5 12/0.6 9A 300KHz 5 mm x 6mm QFN OCP + OTP + PGOOD
IR3810MPBF 21/2.5 12/0.6 12A 600KHz 5 mm x 6mm QFN OCP + OTP + TRACKING
IR3820MPBF 21/2.5 12/0.6 12A 600KHz 5 mm x 6mm QFN OCP + OTP + PGOOD
IR3820AMPBF 21/2.5 12/0.6 14A 300KHz 5 mm x 6mm QFN OCP + OTP + PGOOD

Availability and Pricing

Pricing for the IR38xx devices begins at US$2.25 each in 10,000-unit quantities. Samples and evaluation kits are available now to qualified customers. Prices are subject to change.

 
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