Ericsson Unveils New Digital Advanced Bus Converter Lowering Power Consumption

Ericsson has unveiled the first model in its second generation of digital Advanced Bus Converter (ABC) products. Based upon the FRIDA II platform, which was announced earlier this year, the Ericsson BMR456 3E* Advanced Bus Converter delivers unprecedented performance to system architects who are developing equipment for Information and Communication Technology (ICT) applications that require fast response time, tightly regulated intermediate bus voltages and high efficiency at any point of operation to reduce power consumption. This new generation of fully regulated digital DC/DC converters is based on a 32-bit microcontroller that embeds the family’s most advanced firmware to date. The FRIDA II firmware has been developed by Ericsson to guarantee the highest possible performance at any point of operation from low load to high load.

"While new competitive power module products are close to the level of performance that Ericsson delivered back in 2008, Ericsson has raised the bar again with the launch of world’s most advanced power modules, integrating 32-bit processing and industry-leading power-consumption-control capabilities via embedded firmware," said Patrick Le Fèvre, Marketing and Communication Director, Ericsson Power Modules. "The BMR456 is the first product to be based on the FRIDA II platform and firmware and is the culmination of technology innovation that demonstrates Ericsson’s firm commitment to reduce energy consumption."

The BMR456 implements the FRIDA II firmware, called the ‘Ericsson DC/DC Energy Optimizer’, which combines advanced Ericsson Intellectual Property (IP) together with a series of industry-first functionalities to continually optimize switching parameters and reduce energy consumption to an absolute minimum. The firmware is not just limited to energy management, but includes an enviable number of features including the ability to handle input voltage transients with slew-rates of up to 0.5V/µs, while keeping the output voltage within ±10% and ensuring that the output voltage does not trigger over-voltage protection. It also offers the highly efficient management of pre-bias start-up operation and a fully controlled shutdown process, avoiding voltage spikes that could cause an avalanche condition in the secondary-side synchronous rectification MOSFET, thereby contributing to improved reliability.

In June 2008, through close cooperation with board and systems designers, Ericsson was the first company to release a 21st century 3E power architecture composed of PMBus-compliant ABCs and POL converters that can be fully integrated into the rest of the digital chain of processors and associated components.

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