Is there an upper limit of switching frequency for an IGBT?

The switching frequency (carrier frequency) is not defined in specifications. A higher frequency will increase the switching loss, leading to a problem with the junction temperature. The device will be operable under the absolute maximum rated temperature; a frequency of 15 kHz or less should be used for V-series IGBT module. For a welding device or medical equipment it might be necessary to use switching frequencies of 20 kHz or higher, therefore we recommend a high-speed standard 2in1 module or W-series discrete IBGT.

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