TIDA-020012

Automotive pixelated dome light reference design for interior lighting

TIDA-020012

Design files

Overview

This reference design details a solution to drive and control 30 LEDs individually for automotive interior dome light applications. The high pixel count can be used to create different light zones or welcome light animations. The design also implements LED multiplexing functionality to control up to 150 LEDs. It uses a step-down voltage converter, a linear voltage regulator, three linear LED drivers with serial peripheral interface (SPI), and a microcontroller LaunchPad™ development kit.

Features
  • High pixel count
  • LED multiplexing (150 LEDs)
  • CISPR25 compliant

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.

TIDUEF9.PDF (5604 K)

Reference design overview and verified performance test data

TIDRZT5.PDF (284 K)

Detailed schematic diagram for design layout and components

TIDRZT6.PDF (57 K)

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

TIDRZT7.PDF (261 K)

Detailed overview of design layout for component placement

TIDRZT9.ZIP (1198 K)

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

TIDCFH9.ZIP (305 K)

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

TIDRZT8.PDF (329 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Automotive LED drivers

TLC6C5724-Q1Automotive 24 channel Full diagnostics constant current RGB LED driver

Data sheet document-pdfAcrobat PDF open-in-new HTML
Buck converters (integrated switch)

LMR33630-Q13.8-V to 36-V, 3-A synchronous step-down voltage converter

Data sheet document-pdfAcrobat PDF
Linear & low-dropout (LDO) regulators

TPS7B82-Q1Automotive 300-mA, off-battery (40-V), ultra-low-IQ, low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide Automotive Pixelized Dome Light Reference Design for Interior Lighting Jun. 05, 2019

Related design resources

Hardware development

DEVELOPMENT KIT
MSP-EXP430F5529LP MSP430F5529 USB LaunchPad development kit

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