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Power monitor packs digital I?C interface

Posted: 23 Mar 2009 ?? ?Print Version ?Bookmark and Share

Keywords:power monitor IC? DC/DC converter? digital I2C interface? storage application?


International Rectifier has launched the IR3725 input power monitor IC with digital I?C interface for low-voltage DC/DC converters used in energy-efficient CPU, server and storage applications.

The IR3725 is a highly versatile input power, voltage and current monitor IC for 12V power supplies. Compared to alternative solutions that depend on costly ADCs to measure a system's power, the new device utilizes patent-pending TruePower technology to output average power during a specified interval over a serial digital interface. This information is used by the system controller to optimize overall power consumption, delivering benchmark current accuracy of 1.0 percent.

"Alternative solutions require expensive ADCs. The IR3725, however, with its Truepower technology, is an easy to implement, highly configurable, stand alone IC that precisely measures power to optimize overall power consumption while significantly reducing total system cost," said George Schuellein, marketing director, IR's multiphase products, enterprise power business unit.

With a voltage accuracy of 1.5 percent, the IR3725 provides design engineers with the option to use resistive sensing or inductor DCR current sensing with an internal thermal compensation feature to achieve high efficiency while reducing component count and board size.

The IR3725M also features 1 percent current accuracy, 8V to 23.5V VIN range; 3.3V 5 percent bias supply voltage. Operating temperature range is at -10C to 150C;. Evaluation boards are available upon request.

Available in a 12-lead 3x4mm DFN lead-free package, pricing for the IR3725MTRPBF begins at $1.25 each in 10,000-unit quantities. Production orders are available immediately. The devices are RoHS compliant and prices are subject to change.

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