Automotive 2-Axis Power Seat Brushed DC Motor Drive Reference Design


Design files


The TIDA-01330 reference design implements the drive circuits for two independent brushed DC motors. It provides a solution for automotive power seats with a highly integrated 2-axis driver, reducing the overall bill of materials. The interface to a simple microcontroller Illustrates how the design reduces the processing burden on the control software.  In addition to the drive circuit for two motors, this design also includes current feedback sense circuits and other diagnostic features to ensure reliable operation and detection of faults. The control circuit for an LED illumination element is included, as well as the ability to provide tactile feedback to the seat occupant by vibrating in either axis.

  • Drives two independent brushed DC motors
  • Up to 10 amps motor current (each axis)
  • Current feedback on each axis
  • Reverse battery protection
  • Simple microcontroller interface
  • This circuit design is tested and includes hardware, test results, and a getting started guide
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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.

TIDUCM0.PDF (4324 K)

Reference design overview and verified performance test data

TIDRPZ4.PDF (2984 K)

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

TIDRPZ8.ZIP (4167 K)

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

TIDCD75.ZIP (361 K)

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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

BLDC drivers

DRV8305-Q1Automotive 12-V battery 3-phase smart gate driver (grade 0 & grade 1)

Data sheet: PDF | HTML
NAND gates

SN74AHC1G00-Q1Automotive single 2-input, 2-V to 5.5-V NAND gate

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Automotive Two-Axis Power Seat Drive Reference Design Feb. 07, 2017
Technical article Putting innovation in the driver's seat. What technologies are most important to m PDF | HTML Apr. 27, 2017

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