SBOA620 March   2025 TMCS1126 , TMCS1126-Q1 , TMCS1133 , TMCS1133-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2How Noise Couples Into a System
    1. 2.1 Conducted Emissions and Radiated Emissions
    2. 2.2 Differential Mode Versus Common-Mode Noise
  6. 3Conducted Emissions Design Techniques
    1. 3.1 Design of the TMCS112x and TMCS112x3x EMI Topology
      1. 3.1.1 Components for Differential-Mode Noise Reduction
      2. 3.1.2 Components for Common-Mode Noise Reduction
    2. 3.2 Layout Considerations for EMI Resilience
  7. 4Summary
  8. 5References

4 Summary

In this application note, electromagnetic interference is shown to be a rising problem in many power systems due to power systems demand as electrification continues to spread to new areas. Movement to higher voltage systems, minimization of space for the increase of power density and reduction of cost, and several other factors are making the forced proximity of sensitive components necessary in design to achieve the lofty goals being set forth by both public and private sectors. A background was given into how these noise sources are created and quantified, and techniques are presented that allow the designer to help design the layouts to remain as robust as possible in the face of these challenges.