Power management

Power over Ethernet (PoE) solutions

PSEs and PDs for PoE design interoperability and flexibility

Our power over Ethernet (PoE) ICs offer high interoperability, reliability, convenience, and complete system solutions to those wanting to easily deliver power through Ethernet cables. The IEEE Committee has ratified a new PoE standard (IEEE 802.3bt). We have been involved in the standard’s development since inception, and have a full IEEE802.3bt-ready end-to-end portfolio of interoperable powered devices (PD) and power sourcing equipment (PSE) controllers, which will enable power up to 90W at the source (PSE) and 71.3W at the input to loads (PD), making it ideal for end equipment requiring more power than previous standards could support. Examples of new applications include professional audio, digital signage, 5G small cell radio units, industrial access control, and connected lighting.

Learn more about Power over Ethernet

Get a head start on learning PoE technology with the below resources from our PoE experts. Learn at your own pace with our chapter-style training page, where you can explore the fundamentals of PoE or dive into more advanced IEEE 802.3bt concepts.

PoE powered devices (PD)

A PD-only device manages and protects the PoE power system at the load, Vin=Vout. A PD + DC/DC does all that and performs the DC/DC conversion to provide the required load voltages.

PoE power sourcing equipment (PSE)

PSE devices protect and manage the power as it is being put into the CAT-5 cable. Classification, identification, and overload protection are among the standard functions.

End-to-end IEEE 802.3bt-ready portfolio

TPS23881

High power 8-channel PSE with fully programmable SRAM offers best-in-class interoperability.

TPS2372-3/4

High power PD interface for Type 3 or 4 PoE with automatic maintain power specification & autoclass.

TPS2373-3/4

High power PD interface for Type 3 or Type 4 PoE with advanced startup for DC-DC.

Featured reference design

Additional resources

Ethernet Alliance (EA) certified designs

In 2018 the EA began granting licenses to PoE designs which pass a test suite to demonstrate compliance to the new standard. TI has multiple EA designs and was the first IC supplier to receive a logo.

Designs & software

View our entire library of tested power over Ethernet reference designs, as well as the software and reference code for PSE systems.

What is power over Ethernet (PoE)?

PoE is a mature and growing technology used to conveniently deliver power through Ethernet cables to a load rather than adding additional power cords. We offer solutions for both ends of the cable.