Power management

Power over Ethernet (PoE) solutions

PSEs and PDs for PoE design interoperability and flexibility

TI 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), which will enable power up to 90W received or 71 watts sent, making it ideal for more robust applications that typically require installation from licensed personnel, like connected lighting . TI has been involved in the standard’s development since inception, and has a full IEEE802.3bt-ready end-to-end portfolio  of interoperable Powered Devices (PD) and Power Sourcing Equipment (PSE) controllers.

Learn more about IEEE 802.3bt

Get a head-start on compliance with the below resources from our PoE experts. Learn at your own pace with our chapter-style .bt training page, or check out our blog or video on how to transition from IEEE 802.3 at to the new standard.

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

TPS23880

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

Connected LED lighting

If you’re wanting to power a LED lighting ballast, use this design and the TPS2372 PD to efficiently send power and data over your Ethernet cable.

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. TI offers solutions for both ends of the cable.

Ethernet deviceController PoE PSEController PoE PSEDC/DC converterEthernet device