XP Power unveils new 250/350W ac/dc supplies

According to XP, the EMH250 and EMH350 series suit a range of information technology, industrial, medical equipment and surgical life support applications. All models are also BF rated. Both series have an input range of 80 to 275Vac and are available in four output models covering the nominal voltages of 12, 18, 24 or 48Vdc. A trim function allows adjustment of the output voltage to within +/- 10% of stated nominal. A 12Vdc/0.6A fan supply is also provided across the range, with the EMH350 series including a 5Vdc/2A standby supply. XP claims that, unlike many competitor models, full power is available from low input voltages of 90Vac and that the unit doesn't derate until 50°C operating temperature. The industry standard format units measure 3 x 5 x 1.43in and require 12CFM of forced airflow in order to deliver full output power. An optional top mounted fan is available across the range and the EMH350 has an additional option of a variable speed fan that is dependent on the unit's operating temperature. It is also available with an optional ORing diode circuit that allows for current sharing in N+1 redundancy configurations. The series is available with either analogue or digital control options, with the analogue signals providing Power Fail, Inhibit and Current share; and the digital signals and controls accessible using PMBus compatible commands. The EMH series comes with a three year warranty.