Home Power management Power over Ethernet (PoE) ICs

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. In addition to offering a portfolio of interoperable powered devices (PD) and power sourcing equipment (PSE) controllers, we are pleased to offer a configurable system firmware solution (FirmPSE) for Ethernet switch designers. FirmPSE enables the generation of production level Ethernet switch code for complex multi-port (24-/48-channel) designs using TIDA-050026-23882 for up to 30W/port and TIDA-050026-23881 for up to 90W/port. We also offer a complete portfolio of PoE reference designs to enable your PoE 1 and PoE 2 logo ready systems.

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.

Featured design resources

Ethernet Alliance Logo

Ethernet Alliance (EA) certified designs

We have many EA logo designs and were the first IC supplier to receive both GEN 1 and GEN 2 EA logos.

PoE software

Designs & software

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

Key reference designs

End-to-end IEEE 802.3bt-ready portfolio


Class 1-8 PoE 2 PD with advanced startup for DC-DC


Class 1-6 PoE 2 PD with high efficiency DC-DC controller


Type 4 PoE 2 8-channel PSE controller with 200mΩ Rsense