EMI Suppression Filters (EMC and Noise Suppression) Noise suppression examples for Automotive

Onboard Ethernet is a communication method used by automobiles. Ethernet and other types of differential transmission can generate noise caused by common mode current, which occurs for various factors.
Here, we introduce some noise suppression measures for differential transmission.

The power circuits use a switching system that increases efficiency, but is also a source of problematic noise. Noise suppression measures for the power circuits (DC-DC converter) of devices mounted in vehicles are described below.

Introduce noise countermeasure example for CAN line which is used for automotive communication network.

There are many kinds of problematic noise that are emitted from the devices installed in vehicles.
The examples of the actions taken to suppress noise described here deal with the noise that is radiated from the USB signal cables.

< Measures point >
USB signal lines
USB power lines