Power Over Ethernet PoE ICs Manufacturers or Vendors

A PoE IC (Power over Ethernet Integrated Circuit) is a specialized semiconductor device designed to facilitate the transmission of electrical power and data over Ethernet cables. Power over Ethernet (PoE) technology allows network devices such as IP cameras, wireless access points, VoIP phones, and IoT devices to receive both power and data over a single Ethernet cable, eliminating the need for separate power cables and simplifying installation.

Key Features of PoE IC

The key features of PoE ICs are as follows.
• PoE ICs are commonly used in PSE devices, such as PoE switches or injectors, which supply power to powered devices (PDs) over Ethernet cables. The PoE IC in a PSE device integrates power management, control, and monitoring functions to deliver power safely and efficiently to connected PDs.
• The PoE IC regulates and manages the power delivery process, ensuring that the correct amount of power is supplied to each PD according to its power requirements and the negotiated power level.
• PoE ICs comply with the IEEE 802.3af/at/bt standards, which define the specifications and protocols for PoE implementations.
• PoE ICs support power classification mechanisms, such as the Type 1 (802.3af), Type 2 (802.3at), or Type 3/4 (802.3bt) classifications.
• In addition to power delivery, PoE ICs also support standard Ethernet communication protocols for transmitting data between network devices.
• Some PoE ICs include diagnostic and monitoring capabilities to provide real-time feedback on the status of the power delivery system.

PoE IC Selection Criteria

When selecting a Power over Ethernet (PoE) IC from different vendors, several parameters or criteria should be considered to ensure compatibility, performance, and reliability. Here are some key selection parameters for PoE ICs.
• PoE Standard Compliance
• Power Output
• Number of ports
• Power Management Features
• Other built-in functionalities such as ethernet switch functionality, LED drivers etc.
• Efficiency
• Protection features such as overcurrent protection, overvoltage protection, short circuit protection and thermal shutdown.
• Temperature range
• Package type and form factor

PoE ICs Vendors

Following table mentions PoE ICs Vendors with respective features.

PoE ICs Vendors Description
Skyworks Solutions, Inc. Part Number : Si3406x
Analog Devices (ADI) Part Number : MAX5940
Texas Instruments (TI) Part number : TPS2372
Maxim Integrated Part Number : MAX5940
STMicroelectronics Part Number : ST802RT1A
Linear Technology (now part of Analog Devices) Part Number : LT4276
Renesas Electronics Part Number : RAA458250FYTAX
Microchip Technology Part Number : MCP19114

Overall, PoE ICs play a crucial role in enabling the deployment of PoE technology in various applications, providing efficient and reliable power delivery over Ethernet infrastructure for connected devices. They integrate power management, control, and communication functions to simplify the implementation of PoE systems and ensure compatibility with industry standards.

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