650W ac/dc power supply for medical or industrial applications

XP Power has introduced the SHP650 and MHP650 series of single output high power density fan cooled ac/dc power supplies.

According to XP, 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 have a power density of 8.2W/cubic inch. Three mechanical mounting formats are available, while 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 minimising noise. By using the U channel format designers can supply their own airflow; 5.5 metres/second forced airflow is required. A +12V dc, 6W fan supply is provided when using this format. All units operate from a universal 85-264V ac input range with full power available from 90V ac. The operating temperature range is -20 to 70° C with no derating below 50° C. Each series offers six output voltage variants covering the nominal voltages of 12, 15, 24, 28, 36 or 48 V dc, and can be trimmed within +/- 10% of nominal. A 5V dc, 1W always on output is also provided for standby purposes. The SHP and MHP ranges feature a constant current overload characteristic designed 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.