Date: 17/02/2009

Point of load voltage regulators for server and storage applications

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

This new family features IR's latest advances in control IC, MOSFET and package integration technologies to deliver 4A, 8A, and 12A output current at high efficiency over the entire load range and with input voltages of 12V 9.6V, 5V or 3.3V.

Working up to switching frequency of 1.5MHz, these devices feature better thermal properties to deliver full current rating with no airflow and without heat sink, and allow backside mounting on a motherboard to provide additional space savings.
"IR's Gen2 SupIRBuck family delivers benchmark peak efficiencies higher than 96 percent for greater energy savings and system reliability, and a very high switching frequency for significant overall system size reduction. Moreover, the devices' common scalable footprint offer a high level of flexibility to adapt to changing output current requirements, providing designers with an easy to implement, low risk solution optimized for space constrained high performance applications," said Cecilia Contenti IR's POL Products marketing manager.

Goran Stojcic, executive director for IR's POL Products added: "IR's Gen2 SupIRBuck family further expands IR's rich portfolio of POL products and builds on the success of the Gen1 family released in December 2007. With the Gen2 family we have responded to our customers' needs and delivered on our roadmap promise of enabling greater energy efficiency while significantly reducing the overall solution size".

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% accurate 0.7V reference voltage, sequencing, and a dedicated device for DDR memory tracking.


Availability: Readily available in volumes
Price:
IR3842: Each US$1.20 each in 10,000-unit quantities.
IR3831 and IR3841: US$1.30 each in 10,000-unit quantities
IR3840: US$1.75 each in 10,000-unit quantities.
RoHS compliant: Yes