TIDA-020060

Automotive power over data lines reference design for 100/1000Base-T1 Ethernet applications

TIDA-020060

Design files

Overview

This reference design demonstrates an implementation of Power over Data Lines (PoDL) for automotive use cases. The design uses a DP83TG720S-Q1 1000MBit/s single-pair Ethernet (SPE) PHY with the option to switch to the DP83TC812S-Q1 SPE PHY for 100MBit/s operation. A coupling and decoupling network is used to couple in a maximum power of 50W.

Features
  • Capable of 1000Base-T1 automotive Ethernet
  • Footprint compatible to our 100Base-T1 SPE PHY
  • Power sourcing equipment to supply up to 50W power via SPE cable
  • Automotive qualified filter network for power coupling and decoupling
  • Protection of the powered device with a high-side switch
  • Implementation of PoDL according to the automotive market requirements by reducing cost and complexity of the implementation
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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.

PDF | HTML
TIDUF49.PDF (1367 K)

Reference design overview and verified performance test data

TIDMCO4.PDF (1218 K)

Detailed schematic diagram for design layout and components

TIDMCO5.PDF (173 K)

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

TIDMCO6.PDF (583 K)

Detailed overview of design layout for component placement

TIDMCO8.ZIP (6878 K)

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

TIDCGN3.ZIP (7810 K)

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

TIDMCO7.PDF (2699 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

LM5158-Q13-A, 85-V, 2.2-MHz wide VIN boost, flyback, & SEPIC converter with dual random spread spectrum

Data sheet: PDF | HTML
Comparators

TLV4011-Q1Automotive small-size comparator with integrated reference

Data sheet: PDF
Comparators

TLV6700Low power window comparator with integrated reference

Data sheet: PDF | HTML
Digital power monitors

INA237-Q1AEC-Q100, 85-V, 16-bit, I²C output current/voltage/charge monitor

Data sheet: PDF | HTML
ESD protection diodes

TPD2E2U06-Q1Automotive Dual 1.5-pF, 5.5-V, ±25-kV ESD protection diode for USB & High Speed Interfaces

Data sheet: PDF | HTML
Ethernet PHYs

DP83TG720S-Q11000BASE-T1 automotive Ethernet PHY with RGMII & SGMII

Data sheet: PDF | HTML
General-purpose op amps

OPA991-Q1Automotive, single, 40-V 4.5-MHz low-power operational amplifier

Data sheet: PDF | HTML
High-side switches

TPS1HTC30-Q1Automotive, 60-V, 6-A, 30-mΩ, one-channel smart high-side switch with adjustable current limit

Data sheet: PDF | HTML
I2C general-purpose I/Os (GPIOs)

TCA6408A-Q1Automotive 8-bit translating I2C/SMBus I/O expander with interrupt, reset & config registers

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV766-Q1Automotive, adjustable- and fixed-output, 500-mA, 16-V, positive-voltage, LDO linear regulator

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS745-Q1Automotive 500-mA, low-IQ, high-PSRR, low-dropout (LDO) voltage regulator with power good

Data sheet: PDF | HTML

Technical documentation

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* Design guide Power over Data Lines Reference Design for 100/1000Base-T1 Automotive Ethernet Applications PDF | HTML Feb. 27, 2023

Related design resources

Hardware development

EVALUATION BOARD
AWR2544LOPEVM AWR2544LOP evaluation module for automotive 2nd-generation, 76GHz to 81GHz, high-performance SoC LM5157EVM-BST LM5157 boost converter evaluation module

Software development

SOFTWARE DEVELOPMENT KIT (SDK)
PROCESSOR-SDK-J721E Software development kit for DRA829 and TDA4VM Jacinto™ processors
DRIVER OR LIBRARY
ETHERNET-SW Ethernet PHY Linux drivers & tools

Reference designs

REFERENCE DESIGN
TIDA-020061 Automotive power over data lines PD reference design for 100/1000Base-T1 Ethernet applications

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