DirectFET®; MOSFET High Frequency Operation
Package Impedance vs. Frequency |
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DirectFET MOSFET Package Benefits |
| Frequency effect over package impedance: Skin Effect |
Skin effect & skin depth
At high frequencies current is confined to the perimeter of solid conductors. This phenomenon is often referred to as the skin effect.
Skin depth  |
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Theoretical modeling results under AC conditions
Developed MathCAD model using Maxwell’s equations. For a rectangular bar structure Rac/Rdc is a function of width over skin depth.
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Apply the scale factor Rac/Rdc to each element in model at different values of frequency to predict R versus frequency behaviour…
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