Based on a cost optimized platform that has contributed to make Ericsson
Power Modules¹ 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 Modules¹ portfolio to address the mid-power 24V segment. The
module¹s 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
PKM2810EPI¹s 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 product¹s 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-E¹s 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 designers¹ 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 it¹s 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 Œsingle side components
optimized platform¹ has received very high levels of attention from a broad
range of industries, rewarding Ericsson¹s 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.

In OEM quantities the price of the PKM2810EPI is $23.

Ericsson is the world¹s 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 company¹s
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 ³to be the prime driver in an
all-communicating world² 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.