New Industry Products

Medical 650-Watt AC-DCs Feature PMBus

September 05, 2016 by Jeff Shepard

Artesyn Embedded Technologies announced its new wide input range, single output CNS650-M series of medical power supplies. Contained within an industry standard 4 x 6 inch footprint, these units can deliver 650W with forced-air cooling (750W peak) or 400W with free-air natural convection cooling (650W peak) and feature less than 500mW no-load power consumption. The CNS650-M series is available in 12V, 24V and 48V variants, each with a 12V fan output and 5V standby. These power supplies can continuously deliver full output power across the wide temperature range of -40 to +50 degrees C and up to +80 degrees C with derating.

These power supplies carry medical and ITE safety approvals and incorporate 2XMOPP (Means of Patient Protection) to fully protect and isolate patients from the powered medical equipment. With an isolation of 4000Vac (input-to-output) or 1500Vac (input-to-PE; output-to-PE), these units are Type BF ready: for powering equipment where there is conductive contact with the patient, but not the heart, such as ultrasound monitors, blood pressure monitors, incubators, ECG equipment and operating tables.

Where an application requires more power, the active current share facility uses a signal wire to interlink two or more power supplies in parallel to increase output current capability. The built-in PMBusâ„¢ interface feature provides flexible and comprehensive digital communication via the PMBus command protocol with control and monitoring functions for voltage, current, temperature and the reporting of fault conditions.

The CNS650-M range is less than 1U high and is available in U-channel, open-frame and enclosed end-fan options (open-frame and enclosed end-fan options currently available on 12 V model). The unit’s built-in 61000-3-2 compliant active power factor correction and Class B EMI filter deliver an EMI/RFI performance to Level B (conducted), Level B (radiated with cover).