In recent times, Ethernet lines have been built into the wiring of many current buildings. If Ethernet can be used to simultaneously transmit digital signals and power, the complexity of network installation can be simplified. This article will introduce relevant technologies and solutions for Power over Ethernet (PoE).
PoE is applicable for IP monitoring and remote monitoring applications
Power over Ethernet (PoE) is a technology that can simultaneously transmit power and data to other devices over a twisted pair in an Ethernet network. This technology can be applied in VOIP (Voice of Internet Phone), wireless base stations, network cameras, computers, etc. Since the electronic device using PoE technology can be used without an additional power socket, both the time and cost of configuring power cables can be saved and also at the same time, the cost of the entire device system would be relatively reduced.
Ethernet power supply is especially suitable for IP monitoring and remote monitoring applications. Users do not need to particularly install power sockets on the camera side, so the camera can be used in special environments that are difficult to install any device. RJ-45 network sockets are commonly used around the world, so all PoE devices are compatible. Since PoE technology can operate without altering the cable architecture of the Ethernet cable structure, application of PoE system not only can save costs, but is easy to install, and also has the ability to remotely power on and off.
Overall, the application of PoE technology can help make network equipment installation become more flexible, have lower installation operation and maintenance costs, and have a security protection mechanism. IEEE802.3af/IEEE802.3at can provide short-circuit protection, under voltage protection and overcurrent protection, etc. In addition, equipment applying PoE technology is easy to be installed, especially under difficult and special environments, such as roofs, trees and public places. PoE technology is also convenient for central monitoring. For example, some remote network devices require a server or a central controller, such as a PoE clock, a PoE electronic billboard, a PoE electronic display, etc., all of which are applications of PoE technology.
In order to shorten the development time of products applying PoE technology, we recommend MYBSP0055AABF launched by Murata Company, it is an isolated voltage stabilization DC-DC converter applied for PoE PD with an input range of 42.5-57Vdc and a typical efficiency of 92.5% (12Vout) with full 2250 V DC (one minute) isolation capability. MYBSP0055AABF is ideal for IEEE 802.3at-compliant devices and such a module is designed with self-protection function and includes input undervoltage lockout and output current limit. Output current limit makes use of hiccup auto-reboot technique, and this module has capabilities of hot-swap, detection, and classification meeting IEEE802.3at standard.
The input voltage range of MYBSP0055AABF PoE PD module is 42.5V to 57V and is only 22.4mm x 35.5mm x 10.55mm in size. It is available in SMD package type with an output current reaching up to 5.1A, an operating temperature range of -40°C to 85°C, ripple and noise of 150 mV pk-pk, RoHS 6 compliant, compatible with IEEE 802.3at Class4, a total output power of 25.5W, an output voltage of 5V, and a nominal input voltage of 48V.
PoE technology is quite suitable for monitoring and remote monitoring applications, which can greatly simplify the design and installation of network structure. Application of MYBSP0055AABF PoE PD module will also speed up the development of related products, so it is recommended for developers of related products.