Miniature PCB Mount 5 W AC-DC power supply meets international medical safety standards

Miniature PCB Mount 5 W AC-DC power supply meets international medical safety standards

Posted by Gary Bocock on 26 Jul 2017


The EME05 series of ultra-compact, single output, 5 Watt AC-DC power supplies are believed to be one of the smallest 5 Watt AC-DC supplies, with full international medical safety approvals, on the market. It is available, as standard, in either an encapsulated or open frame mechanical format and measures just 35.6 x 23.7 x 17.6 mm in its open frame format, requiring the minimum of space in the end application.

EME05 Mech

The EME05 is approved to the 3rd edition of the international medical safety standards IEC60601-1:2005, EN60601-1:2006 and ANSI/AAMI ES60601-1:2005, providing reinforced (double) insulation with 4000 VAC input /output isolation and two means of patient protection (2 x MOPP). Risk management is included in the approvals.

The convection-cooled series provides eight single output models covering all the popular nominal outputs from 3.3 to 48 VDC. A peak load capability allows up to 130% of the rated output power to be taken for up to 30 seconds, ideal for accommodating application start-up or where a higher load is required for a relatively short period. This approach saves valuable board space and cost, rather than having to specify a higher rated and potentially larger power supply to meet peak load requirements.

The EME05 offers universal AC input and full power across the complete input range of 90-264 VAC without derating and operation down to 85VAVC with just 10% derating. 

The product utilizes Class II construction and so does not require an earth/ground connection which, combined with EN55011 Class B EMI conducted and radiated emissions, makes the product ideal for home healthcare applications as well as those for hospital or clinical use. The EME05 meets all requirements IEC60601-1-2 ed.4.0:2014 for EMC and no additional filtering components are required to meet these exacting standards, saving PCB space and BOM costs.

Delivering full power up to +50 degrees C and operating across a wide temperature range from -25 to + 70 degrees C, the EME05 can be used in most environments without the need for any additional heat sinking or forced airflow.

About the Author

Gary is a qualified electronics engineer and Member of the Institution of Engineering and Technology (MIET). He has worked in the power supply industry for 30 years in design, development, applications and management roles. He has been with XP for 22 years and has held a variety of engineering and management roles, culminating in his present position as Technical Director.