Versatile AC/DC power supplies deliver 20W in a small form factor

In new energy applications, AC/DC power supplies must increasingly operate over nominal supply values ranging from 100VAC to 277VAC. The recently launched RAC20NE-K/277 from RECOM matches this well, with 20W available at optional 12, 24, or 36VDC outputs. Encapsulated versions are offered with constant voltage or constant current limiting characteristics, as well as a constant voltage open-frame type with 12VDC or 24VDC output.

The series is highly efficient, permitting reliable operation at full load to 60C ambient and 85C with derating. The parts are Class II insulated, OVC III rated to 3000m altitude (OVC II/5000m) and meet EN 55032 ‘Class B’ EMC requirements with a floating or grounded output. Standby and no-load power dissipation meet Eco-design requirements.

The RAC20NE-K/277 board-mount, encapsulated parts are sized 52.5mm x 27.6mm x 23mm, while the open-frame parts with Molex connections are just 80mm x 23.8mm x 22.5mm. Parts include a three-year warranty.

“These parts are an ideal solution for the expanding new energy market where low cost, wide input range, and high transient immunity are requirements,” comments Michael Schrutka, MSc. AC/DC product manager of RECOM. “They will typically find use in energy management, monitoring and powering actuators, as well as in general purpose applications”.