Patent ID: 8014180
Filing Date: 2011-09-06
Classification: H02J,H02M,Y02E

Abstract:
1. A voltage regulator comprising: a master controller configured to generate a control signal based on an output voltage at an output terminal; a plurality of slaves each having an intermediate terminal, a switching circuit to couple the intermediate terminal to an input terminal, and an internal controller to control the switching circuit based at least on the control signal; and a plurality of inductors, each inductor of the plurality of inductors having an input end connected to an intermediate terminal of a corresponding slave and an output end connected to the output terminal, the plurality of inductors including a first inductor bank having two or more inductors that are phase-coupled to each other and a second inductor bank having two or more inductors that are phase-coupled to each other but not to the two or more inductors of the first inductor bank, wherein current outputs of the first inductor bank and second inductor bank are combined without inductively coupling the first inductor bank and the second inductor bank.