TPS23861PW Power Over Ethernet PSE Controller

The TPS23861PW from Texas Instruments is a highly integrated Power over Ethernet (PoE) Power Sourcing Equipment (PSE) controller designed for use in multi-port, high-power applications such as Ethernet switches, routers, and midspans. This advanced component is essential for network devices that need to deliver power to connected devices like IP cameras, VoIP phones, wireless access points, and other IEEE 802.3at and IEEE 802.3af compliant devices.

This robust controller is housed in a 24-pin TSSOP (Thin Shrink Small Outline Package) and operates over a wide temperature range, making it suitable for various industrial and commercial environments. The TPS23861PW simplifies the implementation of PoE by integrating many features that reduce external component count, board space, and system costs.

Key features of the TPS23861PW include:

• Support for up to four PoE ports, allowing for scalability and flexibility in network design.
• Advanced power management capabilities, including port power sensing, programmable power limits, and auto-classification of powered devices (PDs) to ensure efficient power distribution.
• Two-event classification as per IEEE 802.3at, which allows for the identification of different PD power requirements.
• Robust 100V MOSFETs with internal thermal protection, ensuring reliable operation and longevity of the controller under varying electrical conditions.
• Enhanced ESD protection and surge immunity for increased resilience in harsh electrical environments.
• Flexible power management options with programmable current limit and duty cycle to optimize power usage.
• Integrated power MOSFETs, which reduce external component requirements and simplify the design process.
• LED indicators for system diagnostics and status reporting, providing visual feedback for network maintenance and troubleshooting.

With its comprehensive feature set and integration, the TPS23861PW is an ideal solution for developers looking to create sophisticated PoE systems that require reliable power delivery and advanced control. Texas Instruments provides detailed technical documentation, design tools, and software support to facilitate rapid development and deployment of PoE-enabled systems using the TPS23861PW controller.