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AC/DC power supplies come in fan-cooled formats

Posted: 15 Feb 2010 ?? ?Print Version ?Bookmark and Share

Keywords:AC/DC? power supply? medical equipment?

SHP650/MHP650 power supplies

XP Power has released the SHP650 and MHP650 series of single-output, high power density fan-cooled AC/DC power supplies.

The MHP650 range meets the IEC60601-1 safety specification for medical equipment while the SHP650 range compiles with the IEC60950 standard for IT and industrial equipment. Both series are highly efficient, typically 86 percent, and have a high power density of 8.2W/cubic inch.

Three mechanical mounting formats are available to provide design-in flexibility. Two fan-cooled formats provide the option of having the fan mounted internally on the top or externally mounted on the end of the unit. The integral fan speed is load dependent to aid minimizing noise. By using the U channel format designers can supply their own airflow; only 5.5mps forced airflow is required. A +12Vdc, 6W fan supply is provided when using this format.

All units operate from a universal 85-264Vac input range with full power available from 90Vac. The operating temperature range is -20C to +70C with no derating below 50C.

Each series offers six output voltage variants covering the nominal voltages of +12-, +15-, +24-, +28-, + 36- or +48Vdc, and can be trimmed within 10 percent of nominal. A +5Vdc, 1W always on output is also provided for standby purposes. The SHP and MHP ranges feature a constant current overload characteristic making them suitable for motor and other industrial type loads.

Available control signals include AC OK and remote on/off. An active current share capability is also provided to allow sharing of load across multiple units or for configuration of redundant systems, remote sense is also provided.

Both the SHP and MHP are of rugged construction with screw terminals and a three year warranty.

The units are available from Farnell or direct from XP Power.

- Paul Buckley
Power Management DesignLine Europe

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