Patent ID: 8629662

Claim:
A phase current sharing network configured to adjust operation of a current mode multiphase switching regulator, wherein the multiphase switching regulator includes a plurality of switching networks in which each switching network develops a corresponding one of a plurality of phase currents including a corresponding plurality of phase ripple currents through an inductor of each of a plurality of switching phase networks controlled by a corresponding one of a plurality of pulse control signals for converting an input voltage to an output voltage, said phase current sharing network comprising: a plurality of synthetic ripple networks, wherein each of said plurality of synthetic ripple networks is configured to develop a corresponding one of a plurality of ripple voltages that simulates a corresponding one of the plurality of phase ripple currents; wherein each of said plurality of ripple voltages is used to develop a corresponding one of the plurality of pulse control signals; and a current share network that is configured to develop a combined adjustment value and to adjust each of said plurality of ripple voltages by said combined adjustment value, wherein said combined adjustment value comprises a combination of a plurality of phase adjustment values, and wherein each of said plurality of phase adjustment values is based on a difference between a corresponding one of said plurality of ripple voltages and a reference voltage.