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Power Loss Calculation for Rectifier FETs

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beri-he 2025-05-29 19:59:49 +02:00
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Komponentenauslegung/FETs/Rectifier_FETs.m
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@ -1,5 +1,8 @@
%% Skript zur Berechnung der Verluste der Gleichrichter-FETs
%Datenblatt https://www.infineon.com/dgdl/Infineon-IPTC068N20NM6-DataSheet-v02_00-EN.pdf?fileId=8ac78c8c96250806019626da9150613e
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@ -10,14 +13,14 @@ fs = 100e3; %Switching frequency [Hz]
n = 12; %Turns ratio
V_DS_max = 600/n *2; %Maximum Drain-Source-Voltage [V]
Is_rms = 1000/24; %Secondary RMS Current [A]
R_DS = 0.13; %Drain-Source-Resistance [Ohm]
C_oss = 53e-12; %Output Capacitance [F]
V_DS_meas = 400; %Drain-Source-Voltage during measurement of Coss [V]
R_DS = 6.8e-3; %Drain-Source-Resistance [Ohm]
C_oss = 890e-12; %Output Capacitance [F]
V_DS_meas = 100; %Drain-Source-Voltage during measurement of Coss [V]
C_oss_avg = C_oss*sqrt(V_DS_meas/V_DS_max); %Average output capacitance [F]
t_r = 30e-9; %Rise time [s]
t_f = 30e-9; %Fall time [s]
t_r = 15e-9; %Rise time [s]
t_f = 9e-9; %Fall time [s]
V_GS = 10; %Gate-Source-Voltage [V]
Q_g = 100e-9; %Gate Charge Miller Plateau[C]
Q_g = 71e-9; %Gate Charge Miller Plateau[C]
%Calculate losses
P_cond = power(Is_rms,2)*R_DS; %Conduction Losses [W]