Which mechanism limits switching speed of power MOSFET gate driver with capacitive gate load?

💡 Explanation

During switching, the Miller capacitance acts as feedback from drain to gate, impeding rapid voltage changes because gate drive delivers current that also changes the drain voltage via this capacitance. Therefore, current feedback limits switching speed, rather than RLC oscillation, channel length modulation, or substrate diode reverse charge which depend on intrinsic properties.

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