Small-Footprint Sunroof Motor Module Reference Design


Design files


This reference design is a small-footprint motor control module intended for sunroof and window-lift applications. This design uses the DRV8703-Q1 gate driver with an integrated current-shunt amplifier alongside two dual-package automotive-qualified MOSFETs to create a very small power-stage layout compared to typical relay solutions. It also includes two of our DRV5013-Q1 latching hall sensors, which are used to encode the motor position.

  • 15-A motor drive
  • Low component count
  • Anti-pinch detection
  • Reverse battery protection
  • 2-bit hall encoder
  • Motion profiling using pulse-width modulation (PWM) input
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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.


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


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

TIDCDA8.ZIP (1149 K)

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

TIDRQE7.PDF (1052 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Brushed DC (BDC) motor drivers

DRV8703-Q1Automotive 47-V H-bridge smart gate driver with SPI control

Data sheet: PDF | HTML
Hall-effect latches & switches

DRV5013-Q1Automotive, high voltage (up to 38V), high bandwidth (30-kHz) Hall effect latch

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Small-Footprint Sunroof Motor Module Reference Design (Rev. A) Jul. 21, 2017
Application brief Incremental Rotary Encoders (Rev. B) PDF | HTML Dec. 02, 2021
Technical article The seat remembers: Brushed DC motor ripple counting drives innovation in full-fea PDF | HTML Aug. 16, 2017

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