Early Lifetime Estimation for Automotive LIDAR Using Realistic L4 Usage Profiles

A method is presented that relates the BI! (BI!) phase, where a temperature stress is applied to an electronic component after manufacturing, to the L4AD! (L4AD!) operational phase. Relating the BI! phase to the performance in the field requires an in-depth investigation of the temperature of the component. For a more precise estimation of the temperature of the system and furthermore the junction temperature, a model based on SVR! (SVR!) representing the system temperature of a LIDAR! (LIDAR!) sensor is determined. Depending on this model, an average temperature behaviour of the component over a year is approximated utilizing annual usage profiles including weather information and duty cycles. This temperature profile is then applied to the estimation of the burn-in time allocated to the L4AD! application, and the outcomes are compared to the results of the burn-in time estimation in L4AD! application with assumed constant system temperature.