Patent ID: 7373527

Claim:
A power supply system comprising: a plurality of voltage regulators, wherein each voltage regulator is operable to provide a voltage output and is associated with an address; a master clock generator operable to generate a synchronization signal; an interface line operable to communicatively couple the voltage regulators in parallel and carry the synchronization signal to allow the voltage regulators to receive the synchronization signal; and a plurality of clock recovery circuits, wherein each clock recovery circuit is associated with a voltage regulator and wherein each clock recovery circuit is operable to generate a phase shifted trigger signal, wherein the phase shifted trigger signal is phase shifted with respect to the synchronization signal by a selected phase difference and synchronized to a selected frequency multiple of the synchronization signal based on the address of the associated voltage regulator such that a first switching cycle associated with a first voltage regulator may be phase displaced with respect to a second switching cycle associated with a second voltage regulator and a different frequency from the second switching cycle.