Patent ID: 6836100
Filing Date: 2004-12-28
Classification: G05F

Abstract:
A phase redundant regulator apparatus comprising:a plurality of regulator phases connected in parallel between a regulator input and a regulator output; each of said plurality of regulator phases including a regulator receiving an input voltage and providing an output voltage; a multi-phase controller coupled to each of said plurality of regulator phases; said multi-phase controller receiving a feedback output voltage and a respective detected current signal from each of said plurality of regulator phases; said multi-phase controller generating control signals to sequentially activate each of said plurality of regulator phases for predetermined periods of time to generate controlled current sharing between phases; and each of said plurality of regulator phases including an output ORing device to limit current flow into each said phase; an input protection device for providing input over current protection and output over voltage protection of each said phase; and said multi-phase controller implementing a current sharing method for maintaining current sharing between all active phases after a failure of one or more of said plurality of regulator phases with one or more of said regulator phases provided for enabling redundancy.