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TIDA-020061

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

TIDA-020061

Design files

Overview

This reference design implements a powered device (PD) to demonstrate Power over Data Lines (PoDL) in automotive applications. 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 split the data and power on the single-pair ethernet (SPE) cable.

Features
  • Capable of 1000Base-T1 automotive Ethernet
  • Footprint compatible to our 100Base-T1 SPE PHY
  • This design features the implementation of the powered device to be powered via the single-pair ethernet cable
  • Automotive qualified filter network for power coupling and decoupling with reverse polarity protection
  • 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

TIDMCQ8.PDF (1246 K)

Detailed schematic diagram for design layout and components

TIDMCQ9.PDF (172 K)

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

TIDMCR0.PDF (557 K)

Detailed overview of design layout for component placement

TIDMCR2.ZIP (6573 K)

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

TIDCGN2.ZIP (7010 K)

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

TIDMCR1.PDF (2462 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)

LMR38020-Q1Automotive SIMPLE SWITCHER® power converter 4.2-V to 80-V, 2-A, synchronous buck converter

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS629210-Q1Automotive 3-V to 17-V, 1-A, high-efficiency and low-IQ, synchronous buck converter in SOT-583

Data sheet: PDF | HTML
Comparators

TLV3012-Q1Automotive micropower comparator with integrated reference and push-pull output

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
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
Linear & low-dropout (LDO) regulators

TPS7461-A, low-IQ, high-accuracy, adjustable ultra-low-dropout voltage regulator with power good & enable

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

TPS7A16-Q1Automotive, 100-mA, 60-V, ultra-low-IQ, low-dropout voltage regulator with power good and enable

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

TPS7B82-Q1Automotive 300-mA, off-battery (40-V), ultra-low-IQ LDO with enable in AEC-Q100 Grade-0 and Grade-1

Data sheet: PDF | HTML
Shunt voltage references

TL431-Q1Automotive adjustable precision shunt regulator (pin layout: KRA)

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 drivers & tools

Reference designs

REFERENCE DESIGN
TIDA-020060 Automotive power over data lines reference design for 100/1000Base-T1 Ethernet applications

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