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Voltage regulators reckon energy efficiency

Posted: 19 Feb 2009 ?? ?Print Version ?Bookmark and Share

Keywords:voltage regulators? efficiency energy? storage server?

International Rectifier has introduced its second generation (Gen2) of SupIRBuck integrated point-of-load (POL) voltage regulators for energy-efficient, high-performance server, storage and netcom applications.

The highly versatile Gen2 SupIRBuck family features IR's latest advances in control IC, MOSFET and package integration technologies to deliver 4A, 8A, and 12A output current with benchmark efficiency over the entire load range. While optimized for 12V input voltage, efficiencies are also achieved in applications with 9.6V, 5V or 3.3V input voltages.

The devices offer a high switching frequency up to 1.5MHz to allow the use of smaller inductors and fewer output capacitors. Tailored for data center applications, the Gen2 SupIRBuck devices provide an extensive range of features that significantly reduce overall system complexity and size. SupIRBuck's high efficiency and thermal properties deliver full current rating with no air flow and without heat sink, and allow back-side mounting on a motherboard to provide additional space savings.

With a common 5mm x 6mm footprint, the Gen2 SupIRBuck family of integrated voltage regulators is designed for 4A, 8A and 12A of output load current at 1.5MHz switching frequency and provides wide input voltage range of 1.5V to 16V with 5V bias, and wide output voltage range of 0.7V to 90 percent Vin. Unlike other integrated solutions, SupIRBuck presents a pin compatible solution for easy current upgrade.

Other key features include over current and over temperature protection, programmable switching frequency, enable input with input voltage monitoring capability, hiccup current limit, soft-start, power good output, advanced pre-bias start-up, 1 percent accurate 0.7V reference voltage, sequencing and a dedicated device for DDR memory tracking.

In 10,000-unit quantities, IR3842's pricing begins at $1.20 each; IR3831 and IR3841 begin at $1.30 each; and IR3840 begins at $1.75 each. Production orders are available immediately.

- Ismini Scouras
eeProductCenter





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