Range of Application of IGBTs

Range of Application of IGBTs

Power devices such as IGBTs and MOSFETs are applied selectively according to their features and characteristics. In addition to power devices used as single elements (discrete semiconductors), they are also widely used in modules, where they are combined with other basic components. Below, the ranges of application of IGBTs, Si MOSFETs, SiC MOSFETs, and bipolar transistors are explained, in terms of their output capacities and operating (switching) frequencies. We also classify devices into discrete components and modules.

Graphic Representation of the Ranges of Application of Power Devices
in Terms of Output Capacity and Operating Frequency

Discrete IGBTs cover the range from 1 to 50 or 60 kHz and outputs extending up to a little over 1 kVA. Modules using IGBTs have operating frequencies in the same range but with output capacities that can exceed 100 MVA, depending on how the IGBTs are combined with other components. As the output capacity increases, the operating frequency declines due to switching losses and other limitations.

The above should impart a general understanding of the characteristics and ranges of application of different power devices.