Patent ID: 8138736

Claim:
A power system configured to provide a regulated voltage to an electrical load connected to a power source through at least one power line, the power system comprising: a first voltage control loop based on a remote sense signal indicative of voltage level at the load; a second voltage control loop based on a local sense signal indicative of a level of output voltage at the power source, wherein the voltage level of the local sense signal comprises a higher voltage level relative to the voltage level of the remote sense signal; a combiner arranged to combine the remote sense signal and the local sense signal to supply a signal indicative of a difference between the remote sense signal and the local sense signal; and circuitry configured to pass just the signal with the higher voltage level to ensure that the local sense control loop is a dominant control loop with respect to the remote sense control loop, thereby avoiding effects on the power source from a failure mode occurring in an interconnection of the system.