162W 54V out half-brick power module suits PoE applications

30 July 2012

Murata has released the EMH-54/3-Q48N-C power module for PoE applications

Murata has released the EMH-54/3-Q48N-C power module for PoE applications.

The Murata Power Solutions EMH Series DC-DC power module provides a 54V SELV output, 2250V DC isolation and a Basic insulation system meeting the requirements for multiport IEEE 802.3at (PoE+) applications. The EMH-54/3-Q48N-C can deliver 30+ watts of power at 54V to each of four PoE+ Ethernet ports or can deliver up to 162 watts to loads requiring 54V.

The EMH-54/3-Q48N-C was specifically designed for use in applications requiring a wide operating voltage range such as battery-powered systems (24V, 48V or 60V) and wireless base-station applications. The modules accommodate a Vin range of 18 to 72V DC suitable for applications across all regions of the world.

The EMH Series can be mechanically configured to operate in applications that require forced air cooling or ‘sealed box’ applications, by offering an open frame module for forced air cooling or adding an optional baseplate for mounting a heat sink or for conduction cooling in a ‘sealed box’ application.

This multipurpose DC to DC converter delivers 54V @ 3A over a wide operating input voltage range of 18 – 72V with efficiencies up to 91.5%. The modules are UL approved for PoE applications requiring a DC-DC module that will deliver a 54V SELV output with a basic insulation system that has an isolation voltage rating of 2250V DC. The module conforms to the Industry Standard, DOSA half-brick package measuring 58.4mm x 61mm x 12.7mm. An optional baseplate can be supplied if the application requires a heat sink, or for use in conduction cooling (sealed box) applications.

Added protection features include input under voltage lockout, output current limiting, short-circuit protection and thermal shutdown.


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