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Power monitor features digital I2C interface

Posted: 23 Mar 2009     Print Version  Bookmark and Share

Keywords:power monitor  DC-DC converters  input power  current monitor IC 

IR3725

International Rectifier has introduced the IR3725, an input power monitor IC with digital I2C 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. Unlike alternative solutions that depend on costly A/D converters to measure a system's power, the new device utilises 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 optimise overall power consumption, delivering benchmark current accuracy of 1.0 per cent.

With a voltage accuracy of 1.5 per cent, 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.

Available in a 12-pin DFN lead-free package, pricing for the IR3725MTRPBF begins at Rs.62.15 (US $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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