Power Over Ethernet (PoE) Controllers

PoE (Power over Ethernet) controllers are core electronic components used to manage Power over Ethernet (PoE) technology. They transmit both data and power over standard Ethernet cables (such as Category 5 or Category 6), enabling intelligent control of device power supply. These controllers detect the presence of powered devices, classify the required power level, and ensure a safe and stable power supply, preventing overload or short-circuit risks.

PoE technology adheres to IEEE standards, including 802.3af (maximum 15.4W, usable 12.95W), 802.3at (PoE+, maximum 30W, usable 25.5W), and 802.3bt (PoE++, Type 3 supports 60W, Type 4 up to 100W), meeting the diverse needs of devices ranging from low-power sensors to high-power devices.

In applications, PoE controllers are widely used in IP phones, wireless Wi-Fi access points, surveillance cameras, and IoT devices, significantly simplifying wiring and reducing installation costs.

PoE controllers offer advantages such as centralized power management, reduced reliance on power adapters, and the ability to use a single Ethernet cable for dual-purpose applications, improving system reliability and flexibility.