How can one ensure EMC compliance during the initial phase of electronic product design?

Ensuring EMC (Electromagnetic Compatibility) compliance in the initial phase of electronic product design involves a comprehensive strategy that includes the following steps:

• Component Selection: Choose components that have good EMC performance and are themselves compliant with relevant standards.


• PCB Layout: Pay special attention to the layout of the PCB, including trace routing, board layer stacking, and component placement to minimize EMC issues.


• Shielding: Use proper shielding techniques for both cables and the product enclosure to prevent emission of and susceptibility to electromagnetic interference.


• Filtering: Implement filters on I/O lines and power supply lines to attenuate unwanted noise.


• Grounding: Design an effective grounding system to serve as a reference point for the circuit and to mitigate interference.


• Pre-Compliance Testing: Perform pre-compliance EMC tests to identify and fix issues before the final product compliance testing.

These steps will help address many EMC issues early on, saving time and cost in the design process. For more detailed guidelines, refer to the industry standards like IEC 61000 and CISPR 22.