Stepper-motor driver reference design for adaptive front lights and dynamic headlight leveling


Design files


This reference design details a solution to drive and control two stepper motors for dynamic headlight leveling and swiveling in automotive headlight applications such as an adaptive LED driving module or a high-resolution DLP module. It uses a local interconnect network (LIN) system basic chip with integrated linear voltage regulator, two stepper motor drivers with a serial peripheral interface (SPI) and a microcontroller LaunchPad™ development kit.

  • Up to 1-A motor current
  • CISPR25 compliant
  • Fully integrated solution
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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.

TIDUEQ5.PDF (1714 K)

Reference design overview and verified performance test data

TIDM295.PDF (326 K)

Detailed schematic diagram for design layout and components

TIDM296.PDF (56 K)

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

TIDM297.PDF (159 K)

Detailed overview of design layout for component placement

TIDM299.ZIP (1078 K)

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


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

TIDM298.PDF (770 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Stepper motor drivers

DRV8889-Q1Automotive, 50-V, 1.5-A, bipolar stepper motor driver w/integrated current sensing & stall detection

Data sheet: PDF | HTML
System basis chips (SBCs)

TLIN1028-Q1Automotive local interconnect network (LIN) transceiver with integrated voltage regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Stepper-Motor Driver Ref. Design for Adaptive Front Lights and Dynamic Headlight Oct. 24, 2019

Related design resources

Hardware development

MSP-EXP430F5529LP MSP430F5529 LaunchPad™ development kit for USB

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