Patent ID: 7010438

Claim:
A power management integrated circuit for use in an intelligent electronic device for monitoring at least one parameter of a power system comprising: an analog front end formed as part of said power management integrated circuit operative to receive and at least one of amplify, attenuate and filter analog signals representative of at least one of voltage and current in a power system to produce modified analog signals; at least one analog to digital converter formed as part of said power management integrated circuit coupled with said analog front end, wherein said at least one analog to digital converter is operative to produce digital signals representative of said modified analog signals; first logic formed as part of said power management integrated circuit coupled with said analog to digital converter, operative to receive said digital signals and produce at least one power parameter; said logic comprising at least one processor core; at least one random access memory formed as part of said power management integrated circuit coupled with said first logic and operative to store said at least one power parameter; wherein said first logic is operative to implement at least one setpoint to detect when said at least one power parameter is outside a determined range; and at least one digital output formed as part of said power management integrated circuit coupled with said first logic, wherein said digital output is useable to control a switching circuit outside said power management integrated circuit.