Power detection circuit

A device comprising a power detection circuit, wherein the power detection circuit comprises:

• a comparator circuit operative to determine a status of an input power, wherein the comparator circuit being operative to determine the status of an input power comprises the comparator circuit being operative to:
• determine power to be on when a voltage level of the input power is greater than a first threshold level, and
• determining the power to be off when the voltage level of the input power is subsequently lower than a second threshold level;
• a current limiting circuit connected to the comparator circuit and operative to limit a leakage current of the comparator circuit;
• and
• a feedback circuit connected to the comparator circuit and operative to control the first predetermined threshold and the second predetermined threshold, wherein the current limiting circuit is connected in parallel to the feedback circuit.

A method of detecting power in a circuit, the method comprising:

• receiving an input power at a comparator circuit;
• determining a status of the input power, by the comparator circuit, wherein determining the status of the input power comprises:
• determining power to be on when a voltage level of the input power is greater than a first threshold level, and
• determining the power off when the voltage level of the input power is subsequently lower than a second threshold level;
• controlling the first threshold value and the second threshold value through a feedback circuit connected to the comparator circuit;
• and
• limiting a leakage current of the comparator circuit through a current limiting circuit connected in parallel to the feedback circuit.