During the Miller plateau, the Id current maintains the ID and the Vds voltage continues to decrease.
At the end of the Miller plateau, the Id current still maintains ID, and the Vds voltage decreases to a lower value. After the Miller plateau ends, the Id current still maintains ID, and the Vds voltage continues to decrease, but the slope of the decrease is very small at this time, so the decrease The amplitude is also very small, and finally stabilizes at Vds=Id×Rds(on), so it can generally be considered that the MOSFET is basically turned on after the Miller platform is over.
For the above process, the difficulty in understanding is why the voltage of Vgs is constant in the Miller plateau region? The drive circuit still provides drive current to the gate and still charges the gate capacitance, why doesn’t the gate voltage rise? Moreover, the gate charge characteristic is not intuitive to understand the turn-on process of the MOSFET visually. Therefore, the following will understand the turn-on process of the MOSFET based on the drain conduction characteristic.