500W peak AC-DC supply for industrial and Body Floating rated medical applications

October 11, 2018 // By Nick Flaherty
XP Power has launched a series of 500W high peak power AC-DC power supplies for healthcare, industrial and IT applications.

The CMP250 series delivers up to 500 Watts of peak power for up to 60 seconds, as well as providing 250W of continuous convection-cooled power. This makes the series suitable for motor applications and other electromechanical loads without the need for fan cooling across a range of applications.

For medical applications, the CMP250 has an I/O isolation of 4 kVAC, provides 2 x MOPP (Means of Patient Protection) I/O isolation and 1 x MOPP isolation from both input to ground and output to ground, all rated at the AC input voltage. The maximum earth leakage current of 250μA coupled with a maximum patient leakage current of 80uA make the CMP250 suitable for Body Floating (BF) applications, targeting a range of equipment such as surgical tools, motorised beds and chairs used in life support and imaging products. The series is also suited to a variety of industrial and IT applications, especially supporting those applications that have requirements for long-duration peak currents to drive equipment such as printers and other electromechanical loads.

The supply’s peak-power capability of 500 W offers reduced expenditure for companies, rather than implementing a power supply that is rated for continuous operation at more than 250 W. Operating over the –40 to +70 °C temperature range with derating above +50 °C, the series offers a typical high efficiency of 89% along with a very flat efficiency curve across the entire load range. The efficiency performance means less dissipated heat enabling a convection-cooled design and negating the need for system fan cooling.

It has a 1U-high chassis and operates from a universal 80 to 264 VAC input, offering outputs of 24, 36 or 48 VDC. Other key features of the unit include constant-current overload characteristics, a 5V/1.5A standby output and a 12V/0.6A auxiliary output. Additional features include remote sense, output inhibit, AC OK/Power Fail signal and the ability to current share up to three units in parallel. The footprint is 190.5 x 101.6 x 39.9mm


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