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Buck converter suits 2-stage distributed power architectures

Posted: 21 Apr 2005 ?? ?Print Version ?Bookmark and Share

Keywords:international rectifier? ir? buck converter? converter? ipowir ip1203?

International Rectifier (IR) introduced a fully-optimized, full-function 15A single output synchronous buck converter device that achieves more than 90 percent efficiency at full load. The new iPOWIR iP1203 is a flexible solution that addresses requirements from 5.5Vin to 13.2Vin and 0.8Vout to 8Vout, maintaining a full load capability of 15A.

The new power building block is designed to simplify dc-dc point-of-load (POL) converters for network processor units (NPUs) and ASIC power rails within networking and telecommunication systems. According to IR, the iP1203 is ideal for use in two-stage distributed power architectures being fed from either a regulated isolated brick or an unregulated DC bus converter.

"Offering superior power density, the iP1203 building block integrates a full-function PWM control IC, trench MOSFETs and passive components enabling excellent thermal performance at raised ambient temperature without de-rating," shared Stephen Tsang, SVP of sales at IR. "The device incorporates the most critical sync buck power functions so that designers do not have to worry about component selection or board layout."

The company added that its new product addresses important networking and telecommunications power system requirements such as hiccup over-current, over-temperature and over-voltage protection, external synchronisation, power good, and soft start. The building block is housed in a land grid array (LGA) package measuring 9-by-9-by-2.3mm. It uses thermally-enhanced mold compound, enabling dual-sided cooling capability and very low junction-to-case and junction-to-PCB thermal resistance for maximum current handling.

Supplied in 1,000 pieces per tape and reel package, the iP1203TR is priced at $5.75 each in 1,000-unit quantities. Prices are subject to change, said IR.

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