Low cost 300W fanless desktop adapter meets EMC standards

22nd June 2017
Anna Flockett

The new 300W TDM300 series of low cost medical grade AC/DC desktop power adapters is the latest addition from TRUMPower to its product line-up. Using the power supply ensures compliance to the latest IEC/EN 60601-1-2 4th edition EMC standards. The TDM300 Class I units come with an IEC 320/C14 AC inlet and class II units are furnished with an IEC 320/C18 AC inlet.

The series offers standard single output voltages of 12, 15, 24 or 48V with continuous output power of 300W; other output voltages are available upon request.

Both Class I and Class II units come with a standard 8-pin Molex mini-fit female connector that comes with a quick latch to secure the output connection. TRUMPower offers additional connector and cable options and can accommodate special requirements.

The TDM300 series is approved by UL/cUL and TUV to the latest medical standards, including IEC/EN/UL 60601-1 Edition 3.1, ANSI/AAMI ES 60601-1: 2012, CSA-C22.2 No. 60601-1: 2014. The power adapter complies with IEC 60601-1-2 4th edition medical EMC and immunity standards including EN 55011/FCC/CISPR 11 class B (conducted and radiated emissions), EN 61000-3-2, EN 61000-3-3, EN 61000-4-2 (ESD at 15kV air and 8kV contact), EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-8, EN 61000-4-11.

With efficiency of 87% minimum at full load, the TDM300 series is in compliance with CEC and Energy Star level VI and ErP stage II requirements. It carries CE marking, is RoHS compliant and has PSE approval as well. Packaged in a low profile black-coloured plastic enclosure with LED power indicator, the unit has a size of 10x4.57x1.85”.

TheBF ratedpower adapter has a 90-264VAC continuous input range and 0.9 power factor. Withstand voltage is specified at 4,000VAC from input to output (2xMOPP) and 1,500VAC from input to ground (1xMOPP).

With earth leakage current being lower than 200µA at 264VAC, the TDM300 power adapter can operate at an ambient temperature range of 0-40°C. Its MTBF is higher than 300,000 hours at full load and 25°C ambient, calculated per Telecordia SR-332. With no load power consumption less than 0.5W, the power supply is fully protected against over voltage, over temperature, over current, and short circuit conditions.

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