Immunity Evaluation Method of Transceiver ICs for In-Vehicle CAN-FD

It is a well-known fact that a lot of ECUs (Electronic Control Units) and high-speed communication LANs (Local Area Networks) are necessary for ADAS (Advanced Driver Assistance System). OEMs (Original equipment manufacturers) are interested in introducing $C A N$ FD (CAN with Flexible Data Rate) on vehicles for its high data rate. Thereby, CAN-FD is being studied in-vehicle as a replacement for CAN (Controller Area Network). It is expected that many vehicle manufacturers will inherit the conventional CAN components and design policies such as communication lines and ECU design requirements. Accordingly, it is important to determine the immunity performance of the transceiver ICs. In this study, we examined the use of the DPI (Direct Power Injection) Test, which is an immunity test for semiconductors. Focusing on the fact that the main source of error during the BCI (Bulk Current Injection) Test is differential mode noise, and the method is used to select transceiver ICs by generating equivalent differential mode noise in the DPI test.