it is very imoprtant to understand the junction temperature when using the IGBT module . How to obtain the junction temperature is explained by taking the waveform of Figure 10-1 as an example. The calculation of the IGBT part is shown below as an example, but the calculation method of the diode part is basically the same. Regarding the temperature rise , please be careful not only to the maximum rating, but also to the power cycle lifetime due to temperature swing.