Rated at 250W, XP Power’s CCM250 AC/DC power supply achieves up to 95 percent efficiency, dramatically cutting the heat generated in medical, IT and industrial systems. The power supply delivers full output with convection cooling over input voltages from 90VAC to 275VAC, and 200W from 80VAC, in ambient temperatures of -10°C to 50°C. Measuring 152.4x101.6x39.1mm, the CCM250 can fit in 1U enclosures. When short-term peak power is needed, for example in motor start-up, the power supply can deliver up to 300W for 500ms.
The CCM250 design features a three-stage converter using an interleaved, resonant, half-bridge, enabling use of two relatively small transformers instead of a large one, thus saving board space. Also, a zero current, virtually lossless switching topology for the main converter ensures high efficiency over a wide load range and contributes to 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 minimized 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.
XP Power
www.xppower.com
