Patent ID: 9559512
Date: 2017-01-31
CPC Classifications: H02H

Claim:
1. A switching circuit connectable between an input source voltage and an output load for controlling an inrush current to the output load upon turn-on, the switching circuit including: an integrated power MOSFET circuit, the integrated circuit including: a power PMOS load switch including a load switch gate, a load switch source and a load switch drain, the inrush current to the output load passing from the load switch source to the load switch drain and being controlled by a load switch control voltage on the load switch gate; and a variable rise time circuit connected to the gate of the power PMOS load switch that provides the load switch control voltage to the power PMOS load switch after initial turn on and during operation; a temperature monitoring circuit located external to the integrated circuit, the temperature monitoring circuit including a plurality of connected sensors, and wherein multiple temperature thresholds are sensed, and wherein a highest temperature threshold causes turn-off of the power PMOS load switch; and a resistor external to the integrated circuit and coupled to the variable rise time circuit that allows adjustment of the slew rate of the PMOS load switch.