Medical and industrial power supplies deliver full power at a high temperature

TDK Corporation has introduced a 100W-rated TDK-Lambda brand CUS100ME series of medical and industrial AC/DC power supplies. The series delivers 75W in ambient temperatures of up to 85C with just 1m/s airflow, however, with conduction cooling, it can offer full power at up to 70C. Target markets include medical, dental, home healthcare, test and measurement, broadcast and industrial equipment. A choice of seven standard output voltages is offered. The input voltage range is 85VAC to 264VAC, 47-63Hz with the capability of accepting 47-440Hz. Operating efficiencies are up to 94%, with an average efficiency of >87% and <0.5W no-load power consumption. Available in four package types, the power supplies are designed for use in both Class I or Class II (double insulated) installations. The open frame CUS100ME measures 50.8mm x 101.6mm x 31.5mm (WxLxH), the U chassis 64mm x 116mm x 38.5mm, or 64mm x 116mm x 39.7mm with a cover. A 34.2mm high version with a metal baseplate can also be offered. The U channel and baseplate models facilitate the very high ambient temperature conduction cooling ratings. Safety certifications include IEC/EN/ES 60601-1, IEC/EN/UL 60950-1, IEC 61010-1 (designed to meet) with CE marking for the Low Voltage, EMC and RoHS2 Directives. A derivative meeting EN 60335-1 can be supplied upon request. The units also comply with EN 55011-B, and EN 55032-B conducted and radiated emissions (Class I and II), and meet the EN 61000-3-2 harmonics, IEC 60601-1-2 Edition 4 and IEC 61000-4 immunity standards.