Medical external power supplies for monitoring and diagnostic equipment

TDK Corporation has introduced the DTM36-C8 series of 25W to 36W medical external power supplies. Certified to the medical safety standards IEC 60601-1 and EN 60601-1-11 and compliant to EN 60601-1-2 Edition 4 for EMC, the products possess a Class II input needing no earth ground. The DTM36-C8 also satisfies the EU Tier 2 and DoE Level VI efficiency standards. The series is extremely suited for home healthcare, clinical, hospital, dental and life sciences applications for monitoring, imaging and diagnostic equipment.

Nine commonly employed output voltages are provided, ranging from 5VDC to 48VDC. The wide 80VAC to 264VAC input operating range is applied through a standard IEC 60320-C8 (two-pin) inlet socket. The output cable is terminated with a straight 5.5mm x 2.1mm x 12mm (OD x ID x L) connector, with other types of connectors and cable assemblies offered on request.

All models produce an average efficiency level of 85% to 88.3% (model dependant), and an off-load power consumption of lower than <75mW. This allows the series to completely meet the EU CoC Tier 2 and DoE Efficiency Level VI demands. The rugged plastic enclosure is vent-free (IP21) and measures 100mm x 45mm x 22.5mm (L x W x H). The devices can function in ambient temperatures of -30C to 60C, derating linearly to 60% load from 40C to 60C.

The series is certified to IEC/ES/EN 60601-1, meets IEC 60335-1 (Household Appliances) and carries the CE mark for the Low Voltage, EMC and RoHS Directives. The input to output isolation is 4,000Vac (2 x MOPP) and the leakage current less than 80µA. The series complies with the EN 55011 (Class B) and EN 60601-1-2 Ed4 EMC standards.