Si3459 Power Over Ethernet (PoE) and Power Sourcing Equipment (PSE) Controller

The Si3459 PoE PSE Controller is available in a QFN56 package. The device supports both the original 15 W per port PoE standard, as well as the 30 W per port “PoE+” standard. The Si3459  enables the application of PoE power to Ethernet RJ45 jack ports, monitoring power conditions, detecting and dealing with faults, detecting valid Powered Devices (PDs), and cutting off port power when connected PDs are removed. Each port’s supply voltage and current are measured and monitored in real-time and may be accessed via the I²C interface, enabling sophisticated system-level power management and control.

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Specifications Summary

Description: Power Over Ethernet

Package Type: QFN56

Maximum Output Power (W): 30

Package Type: QFN56

Development Tools Type
Si3459 16-Port Midspan Evaluation Kit Evaluation Kits
Title Version Resource Type
Standard Outerbox Label Change to Include RoHS and Halogen Free Mark Product Change Notifications (PCN)
Si3459 Octal IEEE 802.3at PoE PSE Controller 1.1 Data Sheets
Si3459-KIT User’s Guide 0.3 User Guides
Si3459-Smart24-KIT User's Guide 0.1 User Guides
Si3459 UNH Reports Miscellaneous
Si3459 Sifos Reports Miscellaneous
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