Daisy-chained power and data over single pair Ethernet (T1) reference design


Design files


The TIDA-010076 shows the transfer of 220-W power and 100-Mbit/s data over SPE. Communication systems in daisy-chain topology need significantly less hardware and wiring than conventional systems in star-topology. When combined with single-pair Ethernet (SPE, 100BASE-T1) and power over data line, the design gets simplified with fewer wires. Power and data travel over only two wires from node to node.

  • SPE with 100 Mbit/s
  • One twisted pair for power and communication
  • Daisy-chaining of nodes
  • Protected against mis-wiring and surge
  • Engineered or dynamic link power
  • Tested for operating with the  66AK2Gx industrial communications engine
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUET1.PDF (3798 K)

Reference design overview and verified performance test data

TIDM615.PDF (1607 K)

Detailed schematic diagram for design layout and components

TIDM616.PDF (375 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDM617.PDF (626 K)

Detailed overview of design layout for component placement

TIDM619.ZIP (7364 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB

TIDM618.PDF (4302 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Buck modules (integrated inductor)

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Buck modules (integrated inductor)

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Technical documentation

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* Design guide Daisy-Chained Power and Data Over Single Pair Ethernet (T1) Reference Design Jun. 03, 2020

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