This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: TIDA-01081
How does TMP116 (±0.2°C accurate digital temperature sensor) reduce MCU pin occupation and enable automatic LED-module detection in LED lighting control systems for machine vision as shown in reference design TIDA-01081?
TIDA-01081 is a TI Reference Design that demonstrates a unique approach to drive and control a string of multiple high-power LEDs targeted for industrial machine vision systems. The design allows users to program LED current and timing to enable the safe overdriving of LEDs for increased brightness. It makes LED currents up to 2.4 A and on times as low as 200 ns possible enabling very fast photo acquisition in machine vision.
TMP116 is a low-power, high-precision temperature sensor with integrated EEPROM memory. It provides an accuracy of up to ±0.2°C with no calibration. The TMP116 is I2C- and SMBus-interface compatible, has programmable alert functionality, and can support up to four devices on a single bus.
TIDA-01081 takes advantage of TMP116s I2C bus connectivity. This allows connecting 4 sensors for measuring critical temperatures in various locations on the board while occupying only two MCU pins. An integrated alert output enables the temperature sensors to notify the MCU about over temperature without occupying its processing power.
TIDA-01081 is designed to be modular with temperature sensors distributed throughout the modules. The EEPROM included in TMP116s allow the storage of user defined data. This can enable identification and the storage of configuration and runtime information in a real application. On the LED module for example LED type, current and runtime can be stored, which enables the MCU to automatically detect which module is connected and what its history is.
For additional information about this topic, please refer to section 188.8.131.52 "Temperature Sensing" of the User Guide for TIDA-01081.
You can also download the design files (BOM, Schematic, Gerber) for this reference design from the TIDA-01081 folder.
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.