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Texas Instruments LMR38020-Q1 | Demoboard TIDA-020061
Automotive power over data lines PD reference design for 100/1000Base-T1 Ethernet applications
Overview
| Topology | Buck Converter |
| Input voltage | 42-80 V |
| Output 1 | 2 A |
| IC revision | FEBRUARY 2024 |
Description
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
Typical applications
- ADAS
- Mechanincally scanning LIDAR
- Radar ECU
- Rear camera
- Long range Ragdar
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Mount | Pins | Type | L(mm) | H(mm) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PDA SMT Shielded Power Inductor, 33 µH, 2.92 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PDA SMT Shielded Power Inductor | Inductance33 µH | Rated Current2.92 A | Saturation Current3 A | DC Resistance95 mΩ | Self Resonant Frequency8.4 MHz | MountSMT | – | – | Length10 mm | Height5 mm | – | Operating Temperature -50 °C up to +150 °C | ||||
 | WR-PHD Pin Header - Single, –, 3 A | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | Rated Current3 A | – | – | – | MountTHT | Pins1 | TypeStraight | Length2.54 mm | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C |