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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
- Mechanincally scanning LIDAR
- Long range Ragdar
- ADAS
- Radar ECU
- Rear camera
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7847714330 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PDA SMT Shielded Power Inductor | 33 | 2.92 | 3 | 95 | 8.4 | SMT | – | – | 10 | 5 | – | -50 °C up to +150 °C | ||
 | 61300111121 | SPEC | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | 3 | – | – | – | THT | 1 | Straight | 2.54 | – | 250 | -40 °C up to +105 °C |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7847714330 | SPEC | |
| 61300111121 | SPEC | – |
| Samples |
|---|
| 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 |
|---|
