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ISO5852S-Q1: Selecting isolated driver for 1.2kV SiC MOSFET: ISO5852S-Q1 vs UCC21520A.

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Part Number:ISO5852S-Q1

Hello,

I'm desinging a driver for a 1.2 kV SiC MOSFET and I have some questions to select the right core. I want to use the ISO5852S-Q1 because it has some interesting features:

  • DESAT
  • Output UVLO
  • Miller Clamp
  • Soft turn off

The datasheet doesn't say anything about driving SiC-MOSFETs and the CMTI is given in kV/μs (Cio=1pF). Nevertheless, the UCC21520A's datasheet says that:

  • [...] It is designed to drive power MOSFETs, IGBTs, and SiC MOSFETs [...]
  • [...] with a minimum of  100-V/ns common-mode transient immunity (CMTI) [...] with Cio=1.2pF.

but it doesn't have any of the ISO5852S-Q1's features.

In my application we are expecting voltage transitions of 30~40 V/ns at 50 kHz. Is there any inconvenient using the ISO5852S-Q1? Do you  have any CMTI test results of this driver available?

Thanks,

David.


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