Inductor Energy Density
Compute the magnetic energy density of an inductor in millijoules per cubic centimeter from E = 0.5 * L * I^2 divided by the core volume.
Description
Compute the magnetic energy density of an inductor in millijoules per cubic centimeter from E = 0.5 * L * I^2 divided by the core volume.
Inductor Energy Density: Compute the magnetic energy density of an inductor in millijoules per cubic centimeter from E = 0.5 * L * I^2 divided by the core volume.
When to use Inductor Energy Density
Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.
- Inductance (H)
- Inductance in henries.
- Current (A)
- Current through the winding.
- Core volume (cm³)
- Core volume in cubic centimeters.
How Inductor Energy Density works
Compute the magnetic energy density of an inductor in millijoules per cubic centimeter from E = 0.5 * L * I^2 divided by the core volume. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Energy density (mJ/cm³)
- Stored magnetic energy per unit volume.
Limitations and assumptions
- Inductor calculations depend on core material, air gap, turns, frequency, waveform, temperature, DC bias, copper resistance, skin and proximity effects, fringing, and saturation definition. Small-signal inductance and nominal current rating may not describe switching operation.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.
References
-
Inductor — Wikipedia contributors
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