Hi Expert,
My product is a DC-DC converter, due to the high temperature, resulting in inductance saturation phenomenon, eventually leading to overcurrent protection, but if the MOS is turned off at this time, it will cause the MOS
turn-off stress beyond the threshold and damage. I would like to ask the experts how to achieve a delayed shutdown after the trigger protection, in other words, when the inductor current is zero, then turn off the MOS driver to
achieve a soft shutdown, and then ensure that the MOS tube will not be damaged.
Finally, I also want to ask the difference between turning off MOS by TZ register and turning off MOS by AQ register, for example:
EPwm4Regs.TZFRC.bit.OST =1;
And EPwm48Regs AQCSFRC. Bit. CSFA = AQFRC_LOW;