Fast first-order calculations for power-stage decisions.
These calculators are intentionally transparent. They help frame a design question before detailed SPICE, FEM, TCAD, datasheet-curve analysis and hardware validation.
MOSFET loss estimator
FOM estimator
Relative RDS(on) × Qg. Lower is generally better, but application conditions decide actual performance.
Thermal estimator
Voltage margin
Engineering disclaimer: simplified calculators omit many second-order effects including nonlinear capacitances, reverse recovery, dead time, gate-driver behavior, parasitic inductance, temperature dependence, magnetic losses and topology-specific commutation. Do not use them for qualification.