Abstract: In one embodiment, a pass MOSFET is coupled in series between an input voltage and a load, and a bypass capacitor is connected in parallel with the load. In response to a voltage step across the MOSFET, the MOSFET is adaptively controlled to conduct an in-rush current of 2ICL=2IL during the bypass capacitor 12 charging time, where ICL is the capacitive current and IL is the load current. This optimizes the in-rush current to achieve a minimum peak temperature of the MOSFET. In one embodiment, a ramp capacitor connected to the drain of the MOSFET is part of a feedback path that tracks the MOSFET drain voltage to control the gate voltage.

Abstract: In one embodiment, a pass MOSFET is coupled in series between an input voltage and a load, and a bypass capacitor is connected in parallel with the load. In response to a voltage step across the MOSFET, the MOSFET is adaptively controlled to conduct an in-rush current of 2ICL=2IL during the bypass capacitor 12 charging time, where ICL is the capacitive current and IL is the load current. This optimizes the in-rush current to achieve a minimum peak temperature of the MOSFET. In one embodiment, a ramp capacitor connected to the drain of the MOSFET is part of a feedback path that tracks the MOSFET drain voltage to control the gate voltage.