AC/DC Power Supply measures only 6 x 4 x 1.54 in.
July 7, 2009 -
Designed for getting fitted in 1U enclosures, 250 W AC/DC power supply, CCM250 delivers full output with convection cooling over input voltages from 90-275 Vac, and 200 W from 80 Vac, in ambient temperatures of -10 to +50°C. Unit provides up to 300 W for 500 ms for short-term peak power. Featuring 5 V standby rail, remote on/off switching and power fail signals, unit can be used for control of supply and external monitoring. Product doesn't require heatsinks or fans for forced-air cooling.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
XP Power
990 Benecia Ave.
Sunnyvale, CA, 94085
USA
XP Power Introduces First 250W AC/DC Power Supply to Hit 95% Efficiency
XP Power announces a new 250W AC/DC power supply, the CCM250, that achieves up to 95% efficiency, dramatically cutting the heat generated in medical, IT and industrial systems. Rival products typically operate at 90% maximum efficiency, with 10% of the input energy being converted to waste heat that needs to be removed. The 5% improvement in efficiency offered by the CCM250 means that it dissipates only half the heat, reducing or eliminating the requirement for heatsinks, or fans for forced-air cooling.
Removing the need for fans greatly increases reliability while reducing cost, audible noise, system complexity and size. Avoiding audible noise is particularly important in medical applications, where it disturbs patients. Both conducted and radiated emissions are below Class B limits as defined by EN55011, another important consideration in achieving type approval for medical equipment.
The power supply delivers full output with convection cooling over input voltages from 90 to 275VAC, and 200 Watts from 80VAC, in ambient temperatures of -10 to +50 degrees centigrade. It measures only 6 x 4 x 1.54 inches (152.4 x 101.6 x 39.1 mm), making it the smallest product in its class and ideal for fitting in 1U enclosures. Where short-term peak power is needed, for example for motor start-up, the power supply will deliver up to 300W for 500 ms.
The units have a full feature set for controlling the supply and external monitoring and control equipment. This includes a 5V standby rail, remote on/off switching and power fail signals.
The design of the CCM250 combines conventional and novel design techniques to achieve a step-function in power density and efficiency. A 3-stage converter using an interleaved, resonant, half-bridge, means that two relatively small transformers can replace one large one, saving board space. A zero current, virtually lossless switching topology for the main converter ensures high efficiency over a wide load range and contributes to exceptional EMI performance. A crystal-controlled clock and digitally generated drive signals are used to ensure accurate, fixed-frequency timing for switching transistors. The power supply's footprint is minimised through innovative mechanical construction. Heat-generating parts are bonded directly to the U-channel chassis, and magnetic components are conduction-cooled, enabling the use of smaller parts.
The CCM250 is available in sample quantities now, priced from $195 each in OEM quantities from Newark or direct from XP Power.
XP Power is committed to being a leading provider of power solutions, including AC-DC power supplies and DC-DC converters. With ISO9001:2000, XP Power offers total quality, from in-house design through to manufacturing facilities around the world. The company offers the widest range of power products available from one source and unrivalled technical and customer support, aiding both vendor consolidation and cost reduction programmes. XP has 27 sales offices and manufacturing throughout Europe, North America and Asia.
XP Power Ltd, a London Stock Exchange listed public company, has design centres in Pangbourne and Fyfield (UK), Sunnyvale and Anaheim (California), and Singapore, which also serves as the company's headquarters. The design teams push back the boundaries of cost and technology, providing market leading power products. A dedicated in-house Added Value Engineering team configures customer specific solutions, with rapid response times. The applications team provide expert technical support to help customers integrate and use XP power products worldwide.
For further information and reader enquiries:
Duane Darrow,
XP Power, 990 Benecia Avenue,
Sunnyvale, CA 94085
Tel: (408)732-7777
Email: ddarrow@xppower.com
Fax: (408)732-2002
Web: www.xppower.com
William Sng SK,
XP Power (S) PTE LTD
Tel: +65 68469368
Email: wsng@xppower.com
Fax: +65 67418730
Web: www.xppower.com
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