Automotive LED headlight driver module for halogen replacement reference design


Design files


This reference design showcases the TPS92682 and the TPS92520 as a fully self functional three-channel LED driver for headlight applications.  The design is intended to be a low-cost halogen headlight module replacement compatible with an automotive body control module.  The three LED channels drive highbeam/lowbeam, turn indicator and daytime running light, and position marker light.  The design uses one TPS92682 dual channel controller as a constant voltage boost and a constant current SEPIC.  It also uses one TPS92520 supplied by the boost for two synchronous rectified constant current buck converters. The board is designed with ground strip to allow enclosing the power stages for EMI compliance which includes CISPR 25 Class 5 conducted test results.

  • Two stage constant voltage boost converter supplying two synchronous buck converters for highbeam/lowbeam and turn indicator
  • Supplying two synchronous buck converters for
  • Highbeam/lowbeam and turn indicator
  • SEPIC converter for day time running light and position marker light
  • Compatible with power supplied from body control module
  • Highbeam/lowbeam and turn indicator single LED short, output short and open string detection for fault reporting and disabling
  • Reverse battery protection
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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.

TIDUEX4.PDF (14274 K)

Reference design overview and verified performance test data

TIDM650.PDF (569 K)

Detailed schematic diagram for design layout and components

TIDM651.PDF (148 K)

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

TIDM652.PDF (518 K)

Detailed overview of design layout for component placement

TIDM654.ZIP (4777 K)

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


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

TIDM653.PDF (2050 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Automotive LED drivers

TPS92520-Q11.6-A dual synchronous buck LED driver with SPI

Data sheet: PDF | HTML
Automotive LED drivers

TPS92682-Q1Dual channel constant-Voltage and constant current controller with SPI

Data sheet: PDF | HTML
Arm Cortex-M4 MCUs

MSP432E401YSimpleLink™ 32-bit Arm Cortex-M4F MCU with ethernet, CAN, 1MB Flash and 256kB RAM

Data sheet: PDF | HTML
Buck converters (integrated switch)

LM26420-Q1Dual 2 A, automotive-qualified, high-efficiency synchronous DC/DC converter

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS57160-Q1Automotive 3.5V to 60V, 1.5A Buck Converter with Eco-Mode™

Data sheet: PDF | HTML
LIN transceivers

TLIN1029-Q1Local interconnect network (LIN) transceiver with dominant state timeout

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Automotive LED Headlight Driver Module for Halogen Replacement Reference Design Jul. 28, 2020

Related design resources

Hardware development

TPS92682EVM-069 TPS92682-Q1 constant voltage 2-phase boost evaluation module TPS92682EVM-070 TPS92682-Q1 constant current 2-channel boost and boost-to-battery evaluation module

Reference designs

TIDA-050029 45-W, 15-W dual SEPIC LED driver reference design for automotive lighting

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