Does parallel routing of power and signal lines on the BMS control board cause electromagnetic coupling interference?

Running power lines alongside signal lines can lead to severe electromagnetic coupling (EMI). The varying current and voltage on power lines can induce noise in adjacent signal lines through inductive and capacitive coupling, causing signal distortion or sampling errors. Mitigation measures include strict partitioning of the PCB layout, clearly separating power paths from signal paths and maintaining sufficient distance. If close proximity is unavoidable, traces should cross perpendicularly to minimize coupling area. Ground isolation or differential transmission should be used for sensitive signal lines. Critical signal lines can use shielded traces or be routed on inner layers of the PCB. Adhering to these layout and routing principles is fundamental to ensuring signal integrity and system EMC performance.