SLAAEP3 December   2025 ULC1001

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. Acronyms
  5. Introduction
  6. Impedance Response
    1. 3.1 Piezo Only
    2. 3.2 Lens Cover
    3. 3.3 Lens Cover System (LCS)
  7. Equivalent Circuit Model of LCS
  8. LC Filter for LCS
  9. Water Cleaning
  10. Power Consumption
  11. Reliability
  12. Other Tests
    1. 9.1 De-ice
    2. 9.2 Mud Cleaning
    3. 9.3 Optical Interference
    4. 9.4 Waterproof Capability
  13. 10Resources

De-ice

De-icing requires a greater amount of power compared to water cleaning. In the design of the LCS, the mode operating at 560kHz exhibits a significantly lower impedance relative to the mode at 65kHz, making it more advantageous for generating heat and facilitating de-icing. To effectively implement the de-icing mode with the ULC1001-DRV2911EVM, it is necessary to eliminate the LC low-pass filter, as the voltage attenuation is considerably high at 560kHz.

In light of the required de-icing speed, it may be necessary to incorporate a separate heating element to achieve optimal de-icing efficiency. This recommendation arises from the relatively limited heating efficiency of piezo materials compared to other specifically designated heating alternatives.