The temperature of the NTC thermistor and the heatsink temperature Ts are different.
The temperature of the NTC thermistor and the junction temperature Tvj are different. The junction temperature Tvj becomes higher than the temperature of the NTC thermistor. The thermistor is mounted on the same insulating substrate as the IGBT chip but is away from the IGBT chip. It follows the junction temperature Tvj with an offset […]
The temperature of the NTC thermistor and the case temperature are different. Generally speaking, the case temperature Tc directly under the chip becomes higher than the temperature of the NTC thermistor.
The case side temperature and the case temperature Tc are different. Heat of a semiconductor chip is conducted through an insulating substrate to the copper base and heatsink. The case side temperature becomes considerably low, compared with Tc.
It is not an average value across the copper base plate. It is the case temperature directly under the chip.
There is a temperature difference between the surface temperature and the backside temperature. The latter becomes higher.
As short-circuit current is determined by the gate voltage, the SCSOA has to be judged by the gate voltage at the time of a short circuit. As the gate voltage may go up in some cases at the time of short circuit, investigation under the worst conditions is recommended.
Follow the recommended circuit for the driver IC. Detemine the circuit constants so that the protection operation will be finished within the period of the short-circuit time indicated for each series.
There no problem in cutting pins. But please be careful not to apply stress to the PCB.
A 3-Level inverter realizes system miniaturization and higher efficiency compared to a 2-level inverter. A 2-Level inverter controls the voltage waveform of the converter output with 2 electric potentials while a 3-level inverter controls it with 3 electric potentials. As the 3-level converter creates an output waveform closer to a sinusoidal curve, a reduction of […]
