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Reference designs

TIDA-00677

CISPR25 Automotive Tail Light Reference Design for Step-Down + Linear LED Driver Based Systems

Design files

TIDA-00677

Design files

Overview

TIDA-00677 showcases an automotive LED tail light application (tail/stop, turn and reverse) by using the TPS92630-Q1 linear LED driver supplied by an upstream buck converter (TPS65321-Q1) which is directly supplied through a smart-reverse battery diode off the automotive battery voltage. The design has also been subjected to EMI/EMC radiation and pulse tests according to CISPR25 and ISO 7637-2. More information regarding potential cost savings and efficiency (power dissipation and system thermals) can be found in the user guide. For a similar design driven by a boost converter, see TIDA-00678. For a similar design driven directly from a car battery, see TIDA-00679.

Features

Efficiency-optimized design
CISPR-25 tested EMI/EMC
Stays out of AM band
Load-dump tolerant
Smart reverse battery protection

Automotive

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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.

Design guide — TIDA-00677

TIDUBS0A.PDF (9385 KB)

Reference design overview and verified performance test data

Assembly drawing — TIDA-00677

TIDRLZ1.PDF (398 KB)

Detailed overview of design layout for component placement

Bill of materials (BOM) — TIDA-00677

TIDRLZ0.PDF (131 KB)

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

CAD/CAE symbol — TIDA-00677

TIDRLZ3A.ZIP (975 KB)

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

Gerber file — TIDA-00677

TIDCC81.ZIP (1045 KB)

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

PCB layout — TIDA-00677

TIDRLZ2.PDF (2530 KB)

PCB layer plot file used for generating PCB design layout

Schematic — TIDA-00677

TIDRLY9.PDF (222 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Automotive LED drivers

TPS92630-Q1 — Automotive Three-channel Linear LED driver with Analog and PWM dimming

Data sheet: PDF | HTML

Ideal diode & ORing controllers

LM74610-Q1 — 0.48-V to 42-V, zero IQ automotive ideal diode controller

Data sheet: PDF | HTML

Multi-channel ICs (PMICs)

TPS65321A-Q1 — Automotive 3.6V to 36V, 3.2A Buck Converter with Wide Vin 280mA LDO Regulator

Data sheet: PDF | HTML

Technical documentation

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Top documentation	Type	Title	Format options	Date
*	Design guide	CISPR25 Tested Automotive Tail Light for Step-Down Linear LED Design Guide (Rev. A)		Sep 14, 2016

Related design resources

Reference designs

REFERENCE DESIGN

TIDA-00678 — CISPR25 Tested Automotive Tail Light Reference Design for Step-Up + Linear LED Driver Based Systems

TIDA-00679 — Linear LED Driver Reference Design for Automotive Lighting Applications

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