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:
RF arrestor provides robust protection
RFiber Solutions
Power Electronics / Power Management
NexTek’s range of coaxial RF surge and lightning arrestors are designed and built to provide robust protection for any radio or coaxial RF transmission application.
Read more...
Wide-Bandgap Developer Forum 2025
Power Electronics / Power Management
To give designers the ultimate in design flexibility, the entire range of WBG power semiconductors will be provided including discretes, modules, and highly integrated solutions ranging from 40 V to 700 V for GaN and 400 V to 3,3 kV for SiC.
Read more...
Latest MotorXpert software drives FOC motors without shunts or sensors
EBV Electrolink
Power Electronics / Power Management
Power Integrations has announced MotorXpert v3.0, a software suite for configuration, control and sensing of BLDC inverters that utilise the company’s BridgeSwitch motor-driver ICs.
Read more...
New 5 kW and 8 kW hybrid inverters
Current Automation
Power Electronics / Power Management
Switching time from on-grid to off-grid mode is a rapid 5 ms allowing for protection of sensitive electronic equipment.
Read more...
Power relays for energy management applications
Future Electronics
Power Electronics / Power Management
The Panasonic Industry HE-R Series is an energy management relay designed for single-phase or 3-phase AC charging units, combining high capacity, high switching, and low operating power into a small size power relay.
Read more...
Programmable switching DC PSU series
Vepac Electronics
Power Electronics / Power Management
The SPS6000X Series from Siglent is a programmable switching DC power supply with a wide range of single output and constant power features.
Read more...
Tiny MLCCs at 1250 V
RS South Africa
Power Electronics / Power Management
TDK Corporation has expanded its CGA series for automotive and C series for commercial multilayer ceramic capacitors to 10 nF at 1250 V in 3225 size.
Read more...
PMIC extends life of BLE products
Avnet Silica
Power Electronics / Power Management
Nordic Semiconductor’s nPM2100 PMIC incorporates an ultra-efficient boost regulator and a wide range of energy-saving features to significantly extend operating time in non-rechargeable battery applications.
Read more...
PCB-mount 40 W converter
Vepac Electronics
Power Electronics / Power Management
With an ultra-compact
2,5 x 2,5 mm package and a high-power density of 93 W/in
3, these converters are optimised for efficiency and space-saving designs.
Read more...
Upgraded multiphase power inductor
iCorp Technologies
Power Electronics / Power Management
The increased demand for computing power in data centres has resulted in the development of multi-phase ultra-low profile, ultra-high current copper magnetic co-fired power inductors.
Read more...
printer friendly version