Lead-free soldering of telecommunication network infrastructure products
Ericsson has successfully transferred to lead-free solder for its high volume telecom network infrastructure products. By implementing measures for lead-free soldering in all stages of the product development process, from design and component selection to the production process, reliable products are ensured.
 
Digital DC/DC converter benefits in MicroTCA power modules
Micro Telecommunications Computing Architecture (MicroTCA) is a relatively new architectural specification for Information and Communications Technology (ICT) and industrial equipment intended for relatively small, low power applications where it can be more cost effective than other architectures. The key power assembly in MicroTCA is called the ‘MicroTCA power module’ , which, by its own definition has to deliver and secure the power required by Advanced Mezzanine Cards and other accessories that plug-into the MicroTCA enclosure.

Able to work with any type of power converter, PMBus is a major success story. Its simple SMBus-based two-wire hardware interface is similar to, and generally compatible with, I2C while the improved signalling protocols assure greater robustness.

Redundant MicroTCA Power Systems
This case study demonstrates how standard MicroTCA components can be used to provide redundancy for high-availability systems. The study describes a new high-efficiency and high-power-density DC/DC converter that is used within the standard Ericsson MicroTCA power supply and which provides many of the module's industry-leading performance attributes. The material contained in this paper was first presented on June 3, 2008, at the MicroTCA conference.

Is Digital Power Moving Forward?
The proposed paper is marketing oriented and has for objective to relate Digital Power to other industries that have faced technology shift; and to review how such new technologies have been market adopted. It also gives the opportunity to pause the debate for a short while and to present what are the facts that make evidence that technology is moving forward.

Open Server Architecture (pdf)
The Open Server Architecture is flexible, open and easier to build applications on. This is achieved primarily through open and standardized interfaces and a layered structure.

From Digital Confusion to Digital Conversion (pdf)
It is now several years since commercial products with ‘added digital performance’ aiming to revolutionize the on-board power industry have been around in the marketplace. The debate around how such products will change the face of the world has never been so intense, resulting in a certain kind of confusion. Part of the material in this paper was first presented on September 10 during a plenary session at the Digital Power Forum 2007.

Qualification and Verification Considerations for Digital Power Supplies (pdf)

The introduction of digitally controlled power supplies have huge impact on the Quality Assurance process and solutions to the issues discussed in this paper will be vital to the success of digital power in the telecom and datacom markets. This paper was first presented on September 10 during a plenary session at the Digital Power Forum 2007.

Intelligent Energy Management for Improved Efficiency (pdf)

A look at possible energy efficiency improvements brought forth by the introduction of digital control and monitoring of power supplies. This paper will address the two converging trends of digital control and management of power conversion systems and the recognition of the importance of energy conservation. The paper was first presented during the Digital Power Forum in San Francisco, USA, September 2007.

Digital control in a MicroTCA power system (pdf)
Micro Telecommunications Computing Architecture (MicroTCA™) is a relatively new architectural specification for Information and Communications Technology (ICT) equipment, intended for relatively small low power applications where it can be more cost effective than other ICT architectures. The key power assembly in MicroTCA is called the “power module”. This paper was presented at Digital Power Europe in Munich, Germany, 13-15 November.

Performance, cost and reliability considerations in a MicroTCA power system (pdf)
A tutorial for designers considering their first use of products based on the MicroTCA standard, and for the experienced designer looking for detailed information regarding optimal solutions for the power module design.

Optimizing energy efficiency
For Ericsson, the phrase “Design for Environment (DfE)” is not a concept, it is a philosophy.

What is “digital power”?
It's an often used phrase, and you may think you know what it is - but do you?! Ericsson Power Modules' explains what it really means.

Digital Control Techniques enabling Power Density Improvements and Power Management Capabilities
This paper presents a detailed analysis of how digital techniques compare with traditional analog approaches in a Board Mounted Power Supply (BMPS).

Implications of Digital Control and Management for a High Performance Isolated DC/DC Converter
An Ericsson technical paper
First presented at 2007 Applied Power Electronics Conference and Exposition

Performance Improvements for OEM System Designers - A Digital Control Case Study    
An Ericsson technical paper
First published by Digital Power Forum 2006 - Richardson Texas