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Voltage regulator suits ICT applications

Posted: 30 Dec 2008     Print Version  Bookmark and Share

Keywords:voltage regulator  PMBus  high power density  monitoring 


Ericsson Power Modules has announced the availability of the BMR451 digitally controlled, non-isolated voltage regulator rated at 40A with a high current density of 7.90A/cm3.

Packed with the ability to monitor vital parameters through the open standard PMBus interface, the BMR451 suits a wide range of applications in information communication and technologies (ICT). Because intermediate bus architecture is not limited to ICT applications, its high power density and low profile makes the BMR451 well-suited for any application where board space and good thermal performance are crucial, such as process control in industrial environment, sealed-box, test equipment, or even transportation applications.

The BMR451 offers monitoring functions (read-back data) through the open standard interface, PMBus. Having access to strategic information such as load current, load status, temperature, voltage deviations and many parameters through PMBus enables designers and system architects to monitor down to core functions level, without adding external components or circuitry.

Besides cost saving and simplicity resulting from less external components and embedded control, system architects are have the ability to monitor, through the power delivered to each voltage regulator, how low level functions perform.

The PMBus read-mode compliant BMR451 measures just 30.85mm x 20mm x 8.2mm, offers 4.5V to 14V input voltage range, 0.6V to 3.6V output voltage range and an MTBF figure of 2.6 million hours. Through hole and surface mount versions are available.

The BMR451 also features a complete range of standard functions such as remote on/off, over-temperature protection, output over-current/over-voltage protection, input under-voltage protection, and remote control monitoring that can be used for redundancy control.

In addition, the BMR451 has a unique serial number that relates to its chipset. This offers traceability as well as simplifying on-board part identification when performing board diagnostics during the full lifetime of the final equipment.

"With this product, combined with the recently released 20A rated BMR450, and our very successful PMBus compliant 400W isolated quarter-brick BMR453, we are now making it possible for customers to enter a new era of applications that are optimised for energy-efficiency, offering them an unprecedented level of flexibility to monitor and control through the open standard PMBus, energy consumption down to component level," said Patrick Le Fèvre, marketing and communication director at Ericsson.

An evaluation kit is available to help designers evaluate the modules. It comprises evaluation board, operating manual, a CD containing GUI and cables.

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