Automotive Daytime Running Light (DRL) LED Driver Reference Design with Linear Thermal Foldback
TIDA-01382
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Key Document

Description

The TIDA-01382 reference design is a precision pulse width modulation (PWM) dimming solution for daytime running lights (DRL) including thermal foldback without requiring a microcontroller (MCU). The design includes key peripherals like electromagnetic interference (EMI) filtering, electromagnetic compatibility (EMC) filerting, voltage conditioning (shunt regulator), thermal foldback, precision clock generation, and LED drive.

Features
  • Linear thermal foldback for LED protection
  • Precision PWM signal with 2% accuracy
  • Designed for operation through cold crank, load dump and reverse battery conditions
  • Efficiency optimized design

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LMT87-Q1  Automotive Grade, 2.7V-Capable, 10 uA Analog Output Temperature Sensor  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules
OPA2377-Q1  Automotive-Qualified, Rail-to-Rail In/Out, Low Noise, 5MHz CMOS Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TL431-Q1  Automotive adjustable precision shunt regulator (pin layout: KRA)  Voltage references  Sample & Buy Not Available
TLC555-Q1  Automotive LinCMOS TIMER  Clocks & timing  Sample & Buy View Design Kits & Evaluation Modules
TPS92691-Q1  Automotive multi-topology LED driver with rail-to-rail current sense amplifier  LED drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LMT87-Q1 Download
OPA2377-Q1 Download
TL431-Q1 Download
Download
TLC555-Q1 Download Download
TPS92691-Q1 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 2146 24 Feb 2017
Design files (6)
Title Type Size (KB) Date
ZIP 505 24 Feb 2017
ZIP 842 24 Feb 2017
PDF 1262 24 Feb 2017
PDF 267 24 Feb 2017
PDF 74 24 Feb 2017
PDF 429 24 Feb 2017

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