Signal Integrity (SI) analysis on a high-speed
ECU board in CAN-FD network
Automotive engineering was a sub-branch of mechanical engineering
in the past. However, it became the convergence of mechanical
and electrical engineering. Because some of the mechanical
components are replaced by many electronic control units (ECUs).
The networks in the automotive system are controlled area
network (CAN), local interconnect network (LIN), FlexRay,
and Ethernet. Each network consists of ECUs which are controlled
by electric signal, thus the system is called as the X-by-wire.
Therefore, the electric signal affects the performance of
the ECU and the automotive performance.
Our lab has investigated the signal integrity (SI) issues
on controlled area network-flexible data rate (CAN-FD) bus
for the automotive system. The CAN-FD is an advanced CAN communication
whose data rate is higher than that of the CAN. Furthermore,
the CAN and CAN-FD, both of them have stubs due to their star
network topology. The higher data rate and stub structure
disturb the electric signals on the CAN-FD bus. Therefore,
the signal integrity (SI) analysis is required for the printed
circuit board (PCB), connectors, and cables in the CAN-FD