Molex Incorporated has developed the first single port PoE+ Power Source Equipment, single port magnetic jack in accordance to the IEEE802.3at standard. Based on the RJ45 jack and backwards compatible with the previous PoE IEEE802.3af standard, the PoE+ PSE single port magnetic jack, series 85759, is a complete, plug-and-play module that provides engineers with a simplified design process and easy migration path from using standard power supplies to fully integrated PoE+ capability.
rior to the introduction of the new PoE+ PSE single port magnetic jack, implementing PoE or PoE+ for a single port application required developing a discrete solution on the customer’s board using custom controller silicon,” explains Diarmuid Cullinan, Product Manager Integrated Products at Molex. “Power must be isolated from signal and significant design effort is required to protect the customer board from electro-magnetic interference and electro-static discharge while achieving all IEEE802.3at requirements.”
The offers the simplest solution for the design of a single port PSE. Eliminating complex design and testing provides OEMs with a faster time-to-market, reduced investment and lower direct and associated purchasing and production costs. “Except the power supply, the 85759 series contains the entire single port PSE; integrating the RJ45 connector with two LEDs, gigabit PoE+ Ethernet magnetics, and high-power PSE controller. All that is required is a simple 51V for PoE+ or 48V for PoE to automatically manage and control power to connected Ethernet devices such as colour-screen Voice over Internet Protocol phones, wireless access points and pan/tilt/ zoom security cameras,” adds Cullinan.
The footprint of the Molex PoE+ PSE single port magnetic jack is designed to optimise the separation distance of the signal and LED pins from the PoE circuitry, significantly reducing the complexity of PCB routing. The module has an external reset feature and capability to set maximum PoE class requirements (maximum power delivery allowed). Multiple LED configurations and colours are available, including single and bi-colour.
Power over Ethernet is a technology that defines the transmission of both data and power to networked devices over a standard Ethernet cable, eliminating the need for separate power supplies; PoE+ is the new IEEE802.3at standard. It provides the opportunity to increase port-power output to 30 watts, when set to Class 4. It supersedes the 15 watt (Class 0 to 3) IEEE802.3af standard, which was released 2004. Additionally Molex offers the 85789 series gigabit PoE+ enabled magnetic Jack; PoE or PoE+ power can be sent or received through the connector with the PoE circuitry situated on the customer board. For non-PoE gigabit applications the 85793 series is available.