Capacitive Touch Operated Automotive LED Dome Light with Haptics Feedback

(ACTIVE) TIDA-00156

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Key Document

Description

This TIDA-00156 reference design is a capacitive touch / haptic feedback automotive interior lighting solution optimized for automotive Dome light / Map light applications. The solution features a haptic driver with extensive integrated library (100+ effects) for ERM actuators, constant current LED driver with integrated PWM input permitting LED brightness regulation, low power MCU optimized for capacitive touch, and LIN interface communication.

Features
  • Wide input voltage range: 12V Typical, 8-18V Continuous, 42V Load Dump
  • Low system quiescent current consumption (<100uA) handled by the on-board MSP430 putting key components in the system to sleep
  • 400 kHz buck converter switching frequency utlilized in order to stay out of the AM band
  • Design capable of supplying constant LED current and controlled LED current using a PWM signal
  • Easily accessible integrated library of waveforms via I2C communication for a variety of haptic feedback effects
  • Ability to implement cap touch detection without external components other than the on-board MSP430

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (7)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DRV2605  Haptic Driver for ERM/LRA with Built-In Library and Smart Loop Architecture  Actuator Drivers  Sample & Buy View Design Kits & Evaluation Modules
DRV2605L-Q1  Haptic Driver for ERM and LRA With Built-In Library and Smart Loop A  Actuator Drivers  Sample & Buy View Design Kits & Evaluation Modules
MSP430G2553  MSP430G2x53, MSP430G2x13 Mixed Signal Microcontroller  MSP430 ultra-low-power MCUs  Sample & Buy View Design Kits & Evaluation Modules
SN65HVDA100-Q1  LIN Physical Interface  Interface  Sample & Buy Not Available
TL4242-Q1  Automotive Adjustable LED Driver  LED Driver  Sample & Buy View Design Kits & Evaluation Modules
TMP102  1.4V-Capable Temperature Sensor with I2C/SMBus Interface and Alert Function in SOT-563  Temperature Sensors  Sample & Buy View Design Kits & Evaluation Modules
TPS57040-Q1  Automotive 3.5V to 42V, 500mA Buck Converter with Eco-Mode™  Step-Down (Buck)  Sample & Buy Not Available

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (2)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 297 07 May 2014 766
PDF 382 07 May 2014 96
Design files (4)
Title Abstract Type Size (KB) Date Views
PDF 98 07 May 2014 50
PDF 123 07 May 2014 58
PDF 156 07 May 2014 67
PDF 268 07 May 2014 145
Related Tools & Software

Software (3)




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