Modeling and simulation the effect of different structures in A LED driver board on conducted emission level

Abstract

In this study, SPICE simulation of the CISPR 25 test setup has been carried out to observe the effect of different structures on the electronic board designed for the LED driver of side marker lamp of a car on the conducted emission (CE) level. Therefore, four different SPICE models have been created. In addition to these, the CE test for this electronic board has been carried out in a semi-anechoic chamber. Comparing simulation results with the actual test results, the closest results have been found in the analysis of the fourth model. In the frequency range of 150 kHz - 30 MHz, the highest CE values have been found as 58.13 dBnV at 150 kHz in the fourth model (added vias), while it has been 90.17 dBnV at 213.13kHz in the actual test results. Results for 30 MHz - 108 MHz have been found as 71.47 dBnV at 105 MHz and 88.82 dBnV at 59.39 MHz, respectively.