How to avoid later rectification in the early EMC design of intelligent controllers (PAC)?

To avoid EMC issues later in the early design phase of a smart controller (PAC), a prevention-first principle should be followed.

First, establish EMC design specifications, including circuit design (filtering, isolation, protection), PCB design (layering, layout, routing), and structural design (shielding, grounding).

Second, use simulation tools (such as SIwave and HFSS) to predict EMC performance. Conduct pre-testing during the prototype stage to identify problems early.

Key points include: adequate power supply filtering design, complete high-speed signal integrity, and continuous chassis shielding. Through early design, most EMC problems can be resolved during the design phase, reducing later rectification costs and time, and accelerating product launch.