Molex develops PoE+ PSE single port magnetic jack

Sept. 14, 2011
New connector provides an easy migration path from non-PoE to fully integrated PoE+ device capability.

Molex has developed what it claims is the first single port PoE+ Power Source Equipment (PSE) single port magnetic jack in accordance to the IEEE802.3at standard. Based on the RJ45 jack and backward compatible with the previous PoE IEEE802.3af standard, the manufacturer bills its PoE+ PSE single port magnetic jack, series 85759, as 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.

“Prior 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, Molex. “Power must be isolated from signal and significant design effort is required to protect the customer board from electro-magnetic interference (EMI) and electro-static discharge (ESD) while achieving all IEEE802.3at requirements.”

The footprint of the Molex PoE+ PSE single port magnetic jack is designed to optimize 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 colors are available, including single and bi-color.

“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," adds Molex's Cullinan. "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 color-screen Voice over Internet Protocol (VoIP) phones, wireless access points and pan/tilt/zoom security cameras.”


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