Patent ID: 7330984

Claim:
A power monitoring circuit having an automatic feedback function and an overload protection function, the power monitoring circuit comprising: a current detection module electrically connected to a power supply for obtaining a current value of the power supply; a voltage detection module electrically connected to the power supply for obtaining a voltage value of the power supply; a multiplication module electrically connected to both the current detection module and the voltage detection module for generating a power value using the current value and the voltage value; a temperature compensation circuit detecting a temperature value of the power supply path; and a power overload protection module electrically connected to the multiplication module and the temperature compensation circuit for determining whether to switch off a power supply path between the power supply and a system load according to at least one of the power value and the temperature value, so that the power overload protection module protects the system load connected to the power supply by the power supply path; wherein the current detection module, the voltage detection module, the multiplication module and the temperature compensation circuit are integrated within a chip.