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The CUI Inc. VMS-120C-27 is a high-efficiency AC/DC converter designed for industrial and medical applications. It provides a regulated 27V output at up to 4.44A, delivering 120W of continuous power. The converter accepts a universal AC input from 85 to 264 Vac and features active power factor correction (0.98 typical at 115 Vac, 0.94 at 230 Vac).
With a typical efficiency of 95% and a no-load power consumption of just 0.5W, the VMS-120C-27 meets modern energy-saving requirements. It offers line regulation of ±0.5%, load regulation of ±1%, and a temperature coefficient of ±0.03%/°C. The output voltage is adjustable by ±5% via a built-in trimpot. Protection features include over-voltage protection (output shutdown, latching) and a hold-up time of 15 ms at 230 Vac.
The converter is housed in a compact 76.2mm x 50.8mm x 35.1mm (3.00" x 2.00" x 1.38") package suitable for board-mount applications. It operates over a wide temperature range of -40°C to 85°C (with derating) and provides 4 kV isolation. Safety standards include 60335-1 and 60601-1, making it suitable for both industrial and medical equipment.
The output voltage is 27 Vdc nominal, and the maximum output current is 4.44 A.
The operating temperature range is -40°C to 85°C with derating.
It accepts a universal AC input voltage range of 85 to 264 Vac.
It complies with safety standards 60335-1 and 60601-1.
Typical efficiency is 95% at 230 Vac.