Product category:
DC/DC Convertors
News Release from: Ericsson Power Modules | Subject: PKY2616PI
Edited by the Electronicstalk Editorial
Team on 11 December 2007
Brick drops in to boost basestation
efficiency
Full-brick format DC/DC convertor delivers 600W output power and typically exceeds 94% efficiency with a virtually flat efficiency curve from 30 to 100% load.
An advanced DC/DC convertor platform for RF power amplifier applications uses the industry-standard full-brick format and footprint, making it a drop-in replacement that offers enhanced performance The device, aimed at the telecomms market and customers developing base transceiver stations in cellular radio networks where high efficiency and reliability are required, is also ideal for many other applications, such as cooling fan trays
This article was originally published on Electronicstalk on 9 Dec 2002 at 8.00am (UK)
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Offering state-of-the-art performance, the PKY2616PI delivers 600W output power and typically exceeds 94% efficiency.
The device's efficiency curve is virtually flat from 30 to 100% load.
This excellent level of performance is achieved by using a specially optimised topology and advanced rectification techniques (patent pending).
Further reading
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Combining competitive pricing with excellent performance and reliability, Ericsson Power Modules' PKM-E quarter bricks are designed to offer minimum environmental impact to meet future legislation.
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As a point of load (POL) regulator in distributed power architectures, the PMC4000 regulator claims to offer designers clear advantages where both board space and component height are limited.
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A new DC/DC convertor offers high performance and reduced cost in RF power amplifier systems and other distributed power applications.
The device is designed for 24V DC system voltages and has an input voltage range of 18-36V.
For safety and availability, it can withstand up to 50V input continuously.
The output voltage is factory set at 28V and the device features an ultrawide output voltage trimming range that can be adjusted from 32 to 10V, making the PKY2616PI extremely flexible and useful for different RF power amplifier technologies and applications, as well as other applications that require a regulated voltage, such as cooling fan trays in forced convection cooled equipment.
The PKY2616PI has a typical 20mV load and line regulation with +/-1% set voltage over a baseplate temperature range of -40 to +100C.
The device delivers full power at 100C base plate temperature, and uses only high-reliability ceramic capacitors.
Fully current-limit protected, the device has overvoltage protection on input and output connections.
The PKY4716PI fully complies with RoHS requirements and, with its low component count, offers high reliability.
The PKY2616PI has greater efficiency than other similar products on the market, and will contribute to lower operational expenditure for the end user.
The very high control-loop bandwidth in the convertor means that a minimum of external filter components are needed, resulting in greater economy and real estate savings for new RF power amplifier designs.
Normally, an input filter is not needed if the input feeding impedance to the PKY2616PI is low enough.
Ericsson Power Modules' lengthy experience and extensive knowledge of DC/DC convertor design have been applied to optimise all aspects of performance and meet market needs in terms of cost and performance.
The unique use of planar magnetic switching technology and new advanced synchronous rectification make it very different to competing products.
The device's mechanical design has been refined to be cost-effective and offer very efficient thermal management to handle the extreme power levels of high-performance DC/DC convertors.
It combines robust and flexible design and good thermal management, which, together with its manufacturing design, results in a very cost-effective unit, ensuring low life-cycle costs for the end user.
Factors driving demand for this type of device include applications where higher output power is required, such as in WCDMA base transceiver stations.
Higher output power means increased demands on efficiency to reduce power losses and energy usage.
It is estimated that 1W of power loss at board level is worth about US $10 (US $6-15, depending on the cooling principle and system architecture) in operating expenditures over a five-year period.
In addition, investments in central power equipment, standby batteries, cooling, floor space, and other areas are directly proportional to the power and energy consumption.
Comparing the PKY2616PI, with its 94% efficiency, to a convertor with 91% efficiency (the normal figure on the market today), the energy cost savings alone would account for about US $150 over a five-year period, assuming 70% average output power and US $0.1/kWh.
This is for a single convertor.
A base transceiver station, or radio basestation, contains several RF power amplifiers and DC/DC convertors, so nationwide deployment would result in huge annual savings.
So investing in PKY2616PI and higher efficiency is a good investment, both for the environment and the bottom line.
Ericsson Power Modules' PKY2616PI will guarantee lower energy wastage, improving economies at all levels of industry and in society.
The device also meets and exceeds the technical performance level required for its use in telecomms and industrial applications.
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