NEWS
March 2013
New Ericsson power interface
modules simplify energy
monitoring
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New I2C- and PMBus-compliant Power Interface Modules optimized for
AdvancedTCA Blade and embedded computing systems
Integrated input-current monitoring negates need for additional components
PIM delivers output power up to 648W
Optimized for high efficiency – typically 98.7% at 10A output load
Ericsson has announced an extension of its 3E digital power module family with two new
digital-communication-bus-enabled 540-648W low-profile quarter-brick Power Interface
Modules PIMs. Compliant with the 300W de facto industry-standard footprint and offering
both I2C- and PMBus-based serial bus communications, the PIM4328PD and PIM4328PDA
modules simplify board power monitoring and operational functionality without the need for
additional external components, thereby shortening time-to-market and reducing
development costs.
Based on the company’s high-efficiency PIM4328P analog platform, the addition of bus
communication to the modules increases the level of flexibility offered by digital monitoring,
including voltage/current input parameters, making it possible for systems architects to
evaluate the power consumption at board level – an important parameter to accurately
monitor efficiency and also aid system compliance with energy efficiency legislation, where
necessary.
“The addition of the PMBus digital interface to a PIM module is a major step forward
simplifying energy management and system monitoring,” said Patrick Le Fèvre, Marketing
and Communication Director, Ericsson Power Modules. “Combined with the 3E Advanced
Bus Converters and digital Point-of-Load DC-DC regulators, Ericsson is delivering the most
advanced digital power portfolio to help systems architects reduce energy consumption.”
Originally designed for Advanced Telecom Computing Architecture (ATCA) applications –
because of the huge benefits delivered by a standalone module in terms of board space and
time-to-market – the Information and Communications Technology industry is rapidly
adopting PIM technology, which is becoming an increasingly important component for
system designers in the migration to new platforms. However, the new PIMs are also suitable
for industrial, telecommunications or data communications applications employing distributed
power architectures.
NEWS
March 2013
The PIM4328PD embeds an industry-standard I2C /PMBus digital interface, which enables
users to monitor the input and hold-up voltages, output current and device temperature. The
product can be used with any standard two-wire I2C or SMBus host device. The PMBusversion of the module is compatible with PMBus version 1.2 and the product supports bus
clock frequencies from 10 to 400kHz.
Via the PMBus interface, the module can monitor various different parameters and
status/fault flags, in addition to continuously monitoring: Feed A voltage, Feed B voltage,
output current, hold-up voltage, internal junction temperature, and status/fault flags such as
feed under voltage, Output 1 under voltage and hot swap off. Via the I2C interface the
PIM4328PDA can monitor six status bits and five analog measurements including hold-up
capacitor voltage, Output 1 current, Feed A input voltage, Feed B input voltage and module
temperature.
Offering 99% typical efficiency at 300W output, the PIM4328PD and PIM4328PDA maintain
the high standards of the dynamic and load step performance required in ATCA equipment,
while limiting power losses across the filtering unit to a very low level.
The modules operate over an input range of 36V to 75V and are able to sustain a permanent
output current of 10A without forced airflow up to +70°C and up to +90°C with only 2.0m/s
(400LFM) airflow. Output power is 390W 39V input (minimum) and up to 540W when the
input is 54V (minimum). Due to excellent thermal design and use of high-performance
components, when used in conjunction with a front-end power supply, output current can be
extended up to 12A. This results in output power of 648W, allowing headroom when there is
a requirement to upgrade boards with new processors or additional memory.
The 2250V DC I/O-isolated 12W dual-power-management output voltages are 3.3V/3.6A and
5V/0.15A. Other features of the PIM4328PD and PIM4328PDA include protection against
input transients, reverse polarity, over-temperature, over-current, input under-voltage and
inrush current. The modules comply with RoHS requirements and have integral hot-swap
functionality and hold-up charge and discharge management. The inputs include dual power
feeds with ORing functionality and ‘enable’ signaling. The modules’ MTBF is 1.5 million hours
(Telcordia SR-332 Issue 2, Method 1) and meets safety requirements according to
IEC/EN/UL 60950-1.
* Enhanced Performance, Energy Management, and End-user Value are the key benefits
delivered by Ericsson’s range of 3E digitally controlled DC/DC converters.
NEWS
March 2013
FOR FURTHER INFORMATION, PLEASE CONTACT
Patrick Le Fèvre, Marketing and Communication Director,
Ericsson Power Modules
Phone:
+46-10-716 95 07
Reader Inquiry reference:
Reference:
E0174(A)
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