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TIDA-01605: A little confused about the Two-Level Turnoff Protection

Part Number: TIDA-01605

Hi!

I have some questions about the Two-Level Turnoff Protection.

First, Equation 15 shows the voltage of first-level turnoff is 11.9V, why do the Bottom graph of Figures 7 and 8 show around 8V?

Second,  why gate voltage reached 5.5 V and the second-level turnoff process would starts? This gate volatage refers to the Q1 or the SiC MOSFET?