Power over Ethernet Controllers

Power over Ethernet (PoE) Controller ICs are specialized power management devices designed to negotiate and manage power delivery through standard RJ-45 Ethernet cabling in compliance with IEEE 802.3 standards (including 802.3af, 802.3at PoE+, and 802.3bt Ultra-PoE). This category covers Power Sourcing Equipment (PSE) controllers (used in network switches to inject power) and Powered Device (PD) controllers (used in IP cameras, VoIP phones, and wireless access points to extract power safely).

PoE controllers manage the complex multi-stage classification and detection protocols required to verify that a connected device is PoE-compatible before applying high voltages (up to 57V), preventing damage to non-PoE hardware. Key selection specifications include IEEE standard compliance, maximum output power per channel (up to 90W for 802.3bt), channel count (single to multi-port), integrated power MOSFETs, efficiency, and digital status interfaces.

Browse Octatronics to search and compare PoE controller ICs from premier semiconductor manufacturers including Texas Instruments, Analog Devices, Microchip Technology, and STMicroelectronics. Verify technical specifications, download reference design layouts, and submit bulk RFQs online.