Automotive power seat reference design


Design files


This reference design provides the drive and control circuits for motor-driven applications such as automotive power seats, using both bi-directional and unidirectional motor drives. It demonstrates how to drive brushed DC motors with a small board footprint, a high degree of robustness and full diagnostic features. The design illustrates solutions for adding motor-driven comfort and convenience options, as well as replacing relay-based circuits with smarter full-featured devices.

  • Bi-directional drive for brushed DC motors - 30-A peak with external FETs and 10-A peak with integrated FETs
  • Unidirectional drive for lumbar pump and valve
  • Multiplexed current sense signals from all motors
  • Reverse battery and load dump protection
  • Small board footprint for each drive circuit
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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.

TIDUED3.PDF (5844 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRXF9.ZIP (2000 K)

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


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

TIDRXF8.PDF (1188 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
* Design guide Automotive Power Seat Reference Design Nov. 01, 2018

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