Oct 10, 2019
11:37 PM
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Oct 10, 2019
11:37 PM
With regard to coupling capacitance for drivers and power supplies with SiC, are there any recommended values?
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Oct 14, 2019
07:24 PM
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Oct 14, 2019
07:24 PM
You should consider that SiC switches up to 10x faster than silicon. Hence dV/dt of 100 kV/us is not unusual. Hence it is important to chose drives and driver power supplies with very low coupling capacitance. Otherwise significant current spikes might be injected into the input side circuit. Of course also the drivers should be specified with at least 100 kV/us CMTI.
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Oct 14, 2019
07:24 PM
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Oct 14, 2019
07:24 PM
You should consider that SiC switches up to 10x faster than silicon. Hence dV/dt of 100 kV/us is not unusual. Hence it is important to chose drives and driver power supplies with very low coupling capacitance. Otherwise significant current spikes might be injected into the input side circuit. Of course also the drivers should be specified with at least 100 kV/us CMTI.