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Product Focus
The Year in AC-DC Power Supply Technology
Doug Bess
Editor, PowerPulse.Net
The past year witnessed significant new product releases, technological developments, and industry news related to the field of AC-DC Power Supply technology.
In November 2011, Absopulse Electronics announced its MIW 152R Series of dual-output, railway quality ac-dc power supplies which utilize high efficiency power conversion topology to deliver 100W output power. These units meet the requirements of EN 50155 for electronic equipment used on railway rolling stock. Conducted and radiated EMI meet EN55022 Class B, EN50121-4, EN61000 and related standards, ensuring minimum interference to sensitive electronic equipment. These power supplies are suitable for a range of railway applications, including signaling and communications.
MIW 152R Series provides any voltage from 3.3 to 110Vdc on V1 and any voltage from 3.3-24Vdc/3Amax on V2. Both outputs are individually regulated, floating and isolated from each other; they have 1000V isolation between the outputs and 4300Vdc input to output isolation. Output "ON" condition is indicated by a green LED. These units accept a universal ac on the input. Other input and output values as well as an output fail alarm are available on request.
For the complete story, see http://www.powerpulse.net/story.php?storyID=24972
In December of last year, Darnell Group released its AC-DC Power Supplies: Worldwide Forecasts. According to the report, the ac-dc power supply market is projected to grow from $17.0 billion in 2011 to over $22.3 billion by 2016, a compounded annual growth rate (CAGR) of 5.6%. It is also expected to undergo a significant shift in demand characteristics which is expected to result in new product designs and sales opportunities. The emerging Smart Grid is expected to make an immediate impact on the power supply industry and is expected to be one of the more promising longer-term areas of opportunity. Made up of three applications, smart meters, electric vehicle chargers and smart appliances, the smart grid segment is expected to be one of the more promising longer-term areas of opportunity. However, an important fact that manufacturers need to be aware of is that the power supplies currently used in smart grid applications are primarily captive areas of production. Trends affecting the embedded power supply market are presented in the report, AC DC Power Supplies: Worldwide Forecasts.
For the complete story, see http://www.powerpulse.net/story.php?storyID=25083
TDK-Lambda Americas kicked off January with the launch of its CPFE1000F series of baseplate/conduction-cooled power supplies capable of providing up to 1000W without fans or forced-air cooling, thereby providing audible-noise-free operation. With a baseplate and ambient operating temperature range of from -40 up to +85°C this new series of ac-dc power supplies will be of special interest to designers who need high-power but cannot use fans, or where the power supply is mounted in an enclosure.
These single output power supplies operate with a wide universal input range of from 90 to 265Vac with PFC and are available with dc outputs of 12, 28 (adjustable to 24) or 48Vdc. Due to its wide output adjustment range of ±20%, the output voltage can be set to match a variety of customer-specific applications. The outputs of these units can be connected in series or parallel for higher power applications.
For the complete story, see http://www.powerpulse.net/story.php?storyID=25128
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