How can the design of an electrical power measurement switch (PMS) avoid the need for later modifications?

Systematically integrating EMC (Design for EMC) design into the early stages of PMS development is fundamental to avoiding time-consuming and laborious rectification later. Key early design points include: In the architecture phase, determining a reasonable grounding architecture (single-point, multi-point, or hybrid), planning the PCB stack-up (ensuring a complete ground plane), and selecting a shielded chassis. During circuit design, reserving locations for filtering and protection circuits for all external interfaces (power, communication), such as common-mode inductors, TVS diodes, and varistors. Strictly adhering to zoning principles in PCB layout: separating high-voltage, low-voltage, digital, and analog circuits; short and grounded high-speed and clock lines; and placing filtering components close to interfaces. When selecting components, prioritizing models with good EMC characteristics, such as low-noise LDOs and low-Qg MOSFETs. Utilizing simulation tools (such as SI/PI simulation) to predict potential problems. Developing an "EMC Design Checklist" and checking each PCB version before submission. Inviting EMC experts to participate in design reviews. Through proactive design, most EMC problems can be eliminated in their early stages, requiring only minor adjustments during later testing, significantly shortening the development cycle and reducing overall costs.