Automotive Transients Measurement Methodology Assessment for High-Speed Communication Buses
Patrick DeRoy, Mohit Gopalraj, Sachinkumar Goudnoor, Jay O’Halloran, Abhishek Ramanujan · 2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI) · 2022
With the emergence of new high-speed Automotive networking systems using unshielded twisted pair (UTP) cables, the challenges around meeting stringent Automotive requirements have become tougher than ever. Robustness to Automotive transient pulses according to ISO 7637-2 [1], ISO 7637-3 [2] has been a key customer requirement on any networking system physical layer. Several customer specifications also mandate special fixtures to couple the pulses to the communication lines, either the capacitive coupling clamp (CCC) or the 3-slot fixture [3]. This paper studies and compares the effect of these pulses and/or fixtures to help understand the severity on UTP differential data lines.