Half-brick power module for PoE
14 November 2012
Power Electronics / Power Management
Murata has designed its EMH-54/3-Q48N-C power module specifically for Power-over-Ethernet (PoE) applications. The device provides a 54 V SELV output, 2250 V d.c 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+ W of power at 54 V to each of four PoE+ Ethernet ports or can deliver up to 162 W to loads requiring 54 V. It was specifically designed for use in applications requiring a wide operating voltage range such as battery-powered systems (24 V, 48 V or 60 V) and wireless base-station applications.
The module accommodate a Vin range of 18 to 72 V d.c for applications across all regions of the world. It 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 heatsink or for conduction cooling in a sealed box application.
This multipurpose DC-DC converter delivers 54 V @ 3 A over a wide operating input voltage range of 18–72 V with efficiencies up to 91,5%. It conforms to the industry standard DOSA half-brick package measuring 58,4 x 61 x 12,7 mm. Added protection features include input under-voltage lockout, output current limiting, short circuit protection and thermal shutdown.
Further reading:
ABB’s Mission to Zero drives South Africa’s energy transition
ABB Electrification Products
Power Electronics / Power Management
ABB Electrification is charting a bold path towards a net-zero future with its Mission to Zero programme, a blueprint that combines energy efficiency, electrification, and digital innovation to accelerate the transition to clean energy.
Read more...
Energy harvesting using a battery-less IoT system
NuVision Electronics
Editor's Choice Power Electronics / Power Management
Energy Harvesting plays an essential role in the foundation of ambient IoT, a new generation of ultra-low power connected devices that operate by drawing energy from their environment instead of relying on traditional batteries.
Read more...
Driving power, defining performance
Future Electronics
Power Electronics / Power Management
Vishay’s portfolio of inductors, current sense resistors, and MOSFETs provides a comprehensive solution for intelligent power management.
Read more...
Battery simulator module simplifies BMS testing
Test Dynamics
Power Electronics / Power Management
The PXI/PXIe solution from Pickering Interfaces offers a scalable, modular design for faster development cycles, lower total cost of ownership, and improved safety.
Read more...
DC PSU: The cornerstone for efficient solar-storage systems
Vepac Electronics
Power Electronics / Power Management
PV energy storage systems are evolving and DC power supplies, with their technical characteristics that are naturally compatible with new energy, have become a key carrier for improving system energy efficiency.
Read more...
Why local manufacturing, maintenance and support are key to the success of South Africa’s energy future
Power Electronics / Power Management
Although new renewable generation capacity is being developed, the current transmission infrastructure may not fully support the connection of these sources to the national grid or adequately deliver power to areas of high demand.
Read more...
Converter power modules for 48 V networks
Altron Arrow
Power Electronics / Power Management
The economic and quality-of-life benefits of electrification is driving the adoption of HV to 48 V DC-DC conversion across many markets with 48 V power modules becoming more common.
Read more...
The importance of power integrity
Spectrum Concepts
Power Electronics / Power Management
[Sponsored] Behind every high-speed system lies the need for power integrity. Without it, even the cleanest signal paths become compromised.
Read more...
Precise multi-vital sign monitoring
Future Electronics
Power Electronics / Power Management
The AS7058 by ams OSRAM is an integrated multi-vital sign monitoring device, which provides a complete photoplethysmogram, electrocardiogram, body impedance sensor, and electrodermal activity sensor.
Read more...
Automotive battery diagnostics tester
Comtest
Power Electronics / Power Management
Midtronics’ MVT handheld battery tester is a revolutionary tool, powered by MDX-AI, which is set to redefine the standards of battery diagnostics and testing in the automotive industry.
Read more...
printer friendly version