The PM8801TR from STMicroelectronics is a state-of-the-art Power over Ethernet Powered Device (PoE-PD) interface with an integrated Pulse-Width Modulation (PWM) controller, designed to bridge the gap between communication and power delivery over Ethernet cables. This highly integrated solution is perfectly suited for a wide range of applications, including wireless access points, security cameras, and IP phones, where space and power efficiency are of paramount importance.

Key Features

• Compliance with IEEE 802.3af and IEEE 802.3at standards: The PM8801TR is designed to meet the specifications of both the IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) standards, ensuring compatibility with a wide range of network equipment and allowing for up to 30W of power delivery.
• Integrated PWM controller: The device includes a built-in PWM controller, which simplifies the design and reduces the component count by integrating the control functionality required for DC-DC conversion.
• Programmable classification: The PM8801TR supports programmable class detection, enabling the powered device to signal its power classification level to the Power Sourcing Equipment (PSE) for optimized power management.
• Overtemperature protection: To ensure reliable operation under varying conditions, the PM8801TR features overtemperature protection that guards the device against excessive heat.
• Inrush current limiting: The inrush current limiting capability of the PM8801TR helps to prevent damage to the device and the power source during the initial power-up phase.
• High level of integration: By combining the PoE-PD interface and PWM controller, the PM8801TR minimizes the need for external components, leading to a more compact and cost-effective design.

Applications

The versatility and high integration level of the PM8801TR make it an ideal choice for a variety of applications where power and data are required over a single Ethernet cable. The compact size and efficiency of the device are particularly beneficial for:

• Wireless LAN access points
• Network cameras and security systems
• VoIP phones
• Remote monitoring and control systems
• Point of Sale (PoS) terminals

With its robust feature set and compliance with PoE standards, the PM8801TR is a powerful component for developers looking to create efficient and reliable networked devices with minimal design complexity.