TIDA-020009

Automotive dual stage (SEPIC + Linear) static LED driver module reference design for rear-lights

TIDA-020009

Design files

Overview

This reference design details a solution for driving LEDs in an automotive rear-light application such as a rear combination lamp (RCL). It features linear LED drivers for different rear light light functions and the LED drivers are powered by a single ended primary inductance converter (SEPIC) LED power supply. The buck-boost SEPIC LED power supply enables operation through varying battery voltage including cold crank and the design optimizes solution size and efficiency while meeting CISPR 25 conducted and radiated emissions requirements.

Features
  • Operation through cold crank
  • CISPR 25 class 5 compliant
  • Buck-boost operation (SEPIC)
  • Full diagnostic (open/short/single LED short)
  • Supports one-fails-all-fail

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.

TIDUED7.PDF (6331 K)

Reference design overview and verified performance test data

TIDRXS2.PDF (340 K)

Detailed schematic diagram for design layout and components

TIDRXS3.PDF (57 K)

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

TIDRXS4.PDF (275 K)

Detailed overview of design layout for component placement

TIDRXS6.ZIP (1564 K)

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

TIDCF15.ZIP (491 K)

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

TIDRXS5.PDF (293 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Automotive LED drivers

TPS92610-Q1Automotive Single-channel LED driver with 450mA output, open, short and single LED short detection.

Data sheet document-pdfAcrobat PDF open-in-new HTML
Automotive LED drivers

TPS92611-Q1Automotive Single-channel LED driver with 300mA output, open and short detection

Data sheet document-pdfAcrobat PDF open-in-new HTML
Boost controllers (external switch)

LM5155-Q12.2-MHz wide VIN, 1.5-A MOSFET driver, non-synchronous boost controller, AEC-Q100 qualified

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

Technical documentation

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Type Title Date
* Design guide Automotive Dual Stage (SEPIC + Linear) Static LED Driver Module Reference Design Nov. 20, 2018
White paper Fundamentals to automotive LED driver circuits May 09, 2019

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