I've crafted a circuit designed for high-voltage (up to 100V) and high-current (up to 33.6A) applications, specifically for switching loads on the high side. The carefully selected P-Channel MOSFET, Q1, boasts low ON resistance. To safeguard against exceeding the maximum gate-source voltage (VGS), I've incorporated R1 and R2. Another option involves including a Zener diode across the Gate and Source. In addition, a small signal N-Channel MOSFET, Q2, effectively controls the ON/OFF switching of the N-Channel MOSFET. When the ON/OFF control is low, Q2 remains OFF. Conversely, when it's high, Q2 activates, thereby reducing the P-Channel gate voltage via R2 and effectively limiting the current.
