Estimation of switching losses in IGBTs operating with resistive load
In most of the applications where IGBTs are used the device switches an inductive load. Datasheets and simulation models are made with this kind of operation in mind. However, there’s a growing interest in using IGBTs with resistive loads, mainly driven by high-voltage (HV) heaters used in electric vehicles. They rely on IGBTs for regulating the heating power. For the IGBTs, this translates into switching a predominantly resistive load on and off. A proper estimation of the losses during turn-on and turn-off is needed to avoid device failure, but common loss estimation methods cannot be applied to this case. In this application note, a reliable method to estimate the switching losses and instantaneous junction temperature considering these operating conditions is presented.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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APR.2023 |
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Rev.001 |
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65AN133E |
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2.4 MB |
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