Automotive Ultrasonic Kick-to-Open Reference Design


Design files


This reference design uses ultrasonic sensing to detect a kicking motion indicating the user's desire to activate a power lift-gate, power trunk, or power sliding door on an automobile.  Ultrasonic sensing allows detection of more than one object, and gives a measure of distance to each object. The high-resolution and low power dissipation make this design suitable for automotive hands-free closure systems where gesture detection and low current from the battery are critical.

  • Two ultrasonic sensor channels
  • Operates from a 12V automotive battery
  • Detects kicks for distances up to 50cm
  • Low quiescent current
  • Design has been tested and includes schematics, layout, and test results
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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.

TIDUD22.PDF (6197 K)

Reference design overview and verified performance test data

TIDRS39.PDF (2537 K)

Detailed schematic diagram for design layout and components

TIDRS40.PDF (66 K)

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

TIDRS41.PDF (104 K)

Detailed overview of design layout for component placement

TIDRS43.ZIP (599 K)

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


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

TIDRS42.PDF (517 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Ultrasonic sensor AFEs

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Technical documentation

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Type Title Date
* Design guide Automotive Ultrasonic Kick-to-Open Reference Design Aug. 08, 2017
Technical article Comparing capacitive and ultrasonic kick-to-open sensing PDF | HTML Sep. 06, 2017

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