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User17640
Level 1
Level 1
10 questions asked 5 questions asked First question asked
With regard to coupling capacitance for drivers and power supplies with SiC, are there any recommended values?
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electricuwe
Moderator
Moderator
Moderator
10 sign-ins First question asked 5 sign-ins
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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electricuwe
Moderator
Moderator
Moderator
10 sign-ins First question asked 5 sign-ins
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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