TIDT334 September 2023 UCD3138
3.5 Input Voltage Protection
The power stage starts to work when the input voltage is higher than 360 V, and stops working when the input voltage higher than 440 V or lower than 300 V. Power stage waveforms are shown in the following figures.
Figure 3-22 Start to Work When VIN Above 360
V
Figure 3-24 Shutdown When VIN is Below 300 V
Figure 3-23 Shutdown When VIN is Above 440
V