Electromagnetic susceptibility analysis of 32 bit digital signal controller

In this paper, an electromagnetic compatibility (EMC) conducted immunity model of a 32 bit digital signal controller (DSC) is presented. The immunity model predicts the susceptibility behavior of a complex microcontroller to conducted disturbances injected through an input buffer. Two major parts of the model, the injection path and power distribution network of input buffers, are detailed according to S-parameter measurement, input output buffer information specification (IBIS) file and non-confidential information. The susceptibility level of the digital signal controller is measured using the direct power injection (DPI) method, and a good agreement between measurements and simulated results is reported in the frequency range from 10 MHz to 1 GHz.