11. Inductor Selection

Question.4

You are selecting an inductor for a buck converter that powers a sensor + microcontroller system, placed inside a plastic enclosure with no shielding.

You are choosing between two inductors with identical values and current ratings:

  • Inductor A:
    • Shielded construction
    • DCR = 100 mΩ
       
  • Inductor B:
    • Unshielded construction
    • DCR = 45 mΩ

Which inductor should you choose?
 

shielded vs unshielded inductor

Select Answer