Small calculators. Better questions.
These tools are first-order engineering aids. They are deliberately transparent so users can see the assumptions instead of trusting an opaque score.
Conduction + switching loss
Approximate Pcond = I²R and Psw = E × f × N.
Simple device FOM
Use simple product metrics for screening—not as a replacement for application testing.
Thermal rise
First-order junction estimate: ΔTj ≈ P × RθJA/JC, depending on the thermal path used.
Voltage margin
Quickly see how much nominal voltage headroom remains before detailed transient analysis.
Why these calculators stay simple.
Real power-device losses depend on nonlinear capacitances, temperature, gate resistance, driver voltage, commutation current, parasitic inductance, diode recovery, dead time, magnetic behavior and control strategy. These calculators help you identify what to investigate next; they are not a certification or SPICE replacement.