An LSI EMI model comprising separate blocks with current sources within a microcomputer was used to analyze conducted emission noise in a power circuit of a product board, in order to examine the PCB power circuit system in an automotive electronic control unit (ECU). An LSI's EMI model has separate blocks for each current source and each linear circuit system. They were used to analyze conducted emission noise of a PCB power circuit system. The EMS model was also applied to PCB simulation. The attempt was made to improve the EMI model so as to achieve higher accuracy in the analysis, and its effectiveness was confirmed.
展开▼
