ZHCSON5 april 2023 UCC21756-Q1
PRODUCTION DATA
A standard desaturation circuit can be applied to the DESAT pin. If the voltage of the DESAT pin is higher than the threshold VDESAT, the soft turn-off is initiated. A fault will be reported to the input side to DSP/MCU. The output is held to LOW after the fault is detected, and can only be reset by the RST/EN pin. The state-of-art overcurrent and short circuit detection time helps to ensure a short shutdown time for SiC MOSFET and IGBT.
If DESAT pin is not in use, it must be tied to COM to avoid overcurrent fault false triggering.