Power Loss Calculator

Calculate conduction and switching losses for MOSFETs and IGBTs

Select Device

R_DS(on) (mΩ)

Q_g (nC)

t_on (ns)

t_off (ns)

V_DS (V)

I_D (A)

Switching Frequency (kHz)

1 kHz50 kHz500 kHz

Duty Cycle (%)

5%50%95%

V_GS (V)

Temperature Coefficient (R_DS(on) multiplier)

1.0 (25°C)×1.42.0 (150°C)

Total Power Loss

28.87 W

I_RMS = 14.14 A | I_avg = 10.00 A

Loss Breakdown

4.76

Conduction (W)

24.00

Switching (W)

0.108

Gate Drive (W)

Conduction Loss:

P_cond = I_RMS² × R_DS(on) × k_temp

Switching Loss:

P_sw = ½ × V_DS × I_D × (t_on + t_off) × f_sw

Gate Drive Loss:

P_gate = Q_g × V_GS × f_sw