Based on a cost optimized platform that has contributed to make Ericsson Power Modules’ quarter-brick PKM-E series one of the most successful throughout the world, and now using a combination of further optimized topology and advanced components, the 24V input PKM2810EPI delivers 65% more power that its predecessor, while improving efficiency up to 92.5% at half-load and 89.5% at full-load.
The PKM2810EPI is a 3.3V/25A output module delivering up to 82.5W. The module is the first in the second generation of PKM2000EPI, complementing Ericsson Power Modules’ portfolio to address the mid-power 24V segment. The module’s high efficiency provides for a very good thermal derating performance, saving cost by simplifying thermal design.
By optimizing its circuitry and using special topology arrangements, the PKM2810EPI’s building practice has been simplified to an extreme level, making it possible to mount all the components on one side of the board, keeping the back side clean of components to simplify baseplate attachment or connection to cold-wall cooling. A further benefit of the optimized PKM-E platform is the product’s very light weight - 25 grams - reducing energy during transportation and board-stress when enclosed in sealed chassis.
The module is principally aimed at telecom systems powered by 24V batteries and accepts input voltages from 18 to 36V. However, because 24V is a common voltage in industrial OEM applications such as process control, automation, robotic, transportation and many others, the product is actually perfectly suited to a very large range of applications. This PKM2810EPI is also a very good product for when customers are upgrading boards to replace older modules to achieve higher-efficiency levels while reaping the cost benefit inherent to PKM-E’s building practice.
As it has been in the ICT industry for several years, total cost of ownership (TCO) is also becoming a very important criterion for industrial applications. The inherent performance characteristics of the PKM2810EPI are perfectly suited to such a requirement. Also, the growing demand for cold-wall cooling systems require modules to fit into an inner chassis that has an average component height of less than 10mm. With its low height of 8.5mm (0.33 in) the PKM-E series is very well designed to ease board and mechanical designers’ jobs when integrating board-mounted modules into sub-systems. This feature also makes them perfectly suited for narrow board pitch applications with board spacing down to 15mm.
Featuring versatile, useful controls, the module has an on/off control that is referenced to the input side (positive and negative logic options are available). A remote sense for the output voltage compensates for output distribution drops, and an output voltage trim - range from 2.97 to 3.63V - permits custom voltages and voltage margining. Full protection facilities are included embracing output over-voltage, input under-voltage, over temperature, monotonic start-up, and output short circuit protection. For safety and reliability, the PKM2810EPI features a 1500Vdc input to output isolation level.
Because of it’s unique, simplified design, low component count and high efficiency that reduces heat dissipated, according to Telecordia SR332 – issue 1 – Black Box Technique, the PKM2810EPI has an MTBF of 1.5 million hours, guaranteeing excellent system reliability over its life-time. The product is compatible with the relevant clauses and requirements of the RoHS directive 2002/95/EC, and fully meets requirements in high-temperature lead-free soldering processes.
Introduced in February 2004, the Ericsson PKM-E ‘single side components optimized platform’ has received very high levels of attention from a broad range of industries, rewarding Ericsson’s innovation in seeking to bring the most cost efficient solution to its customers, while offering the highest performance levels. The addition of the further optimized PKM2810EPI and other variants yet to come will offer more options to its customers when considering cost reduction programs.
ABOUT ERICSSON
Ericsson is the world’s leading provider of technology and services to telecom operators. Ericsson is the leader in 2G, 3G and 4G mobile technologies, and provides support for networks with over 1 billion subscribers and has a leading position in managed services. The company’s portfolio comprises of mobile and fixed network infrastructure, telecom services, software, broadband and multimedia solutions for operators, enterprises and the media industry. The Sony Ericsson and ST-Ericsson joint ventures provide consumers with feature-rich personal mobile devices.
Ericsson is advancing its vision of “to be the prime driver in an all-communicating world” through innovation, technology, and sustainable business solutions. Working in 175 countries, more than 75,000 employees generated revenue of SEK 209 billion (USD 32.2 billion) in 2008. Founded in 1876 with the headquarters in Stockholm, Sweden, Ericsson is listed on OMX NASDAQ, Stockholm and NASDAQ New York.
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