Abstract: Disclosed is a circuit for controlling a single-inductor multiple-output voltage regulator. The voltage regulator includes the single inductor and is configured to generate an independent regulated voltage at each of a plurality of outputs. The circuit includes: a plurality of output switches configured to selectively respectively connect each of the plurality of outputs to a first inductor terminal of the inductor; and a controller configured to control the plurality of output switches in a plurality of switching periods such that, in an operational state, each of the plurality of outputs is periodically connected to the first inductor terminal for a respective connected time duration to generate the regulated voltage at a corresponding output.

Abstract: Disclosed are control circuits for a SIMO voltage regulator, and associated voltage regulators. The control circuit comprises output switches for selective connection of each output to a first inductor terminal; and a controller. In an embodiment, the controller such that each output is periodically connected to the first inductor terminal for a respective connected time duration which are each dependent on at least one historical voltage value sampled in an earlier switching period on at least one of the outputs. In another embodiment, the output for which at least a first portion of its corresponding connected time duration is first calculated is periodically switched. In yet another embodiment, it is determined whether the SIMO is in a locked condition; whether the locked condition is valid; and if invalid, a respective alternative voltage regulator is used to supply one or more of the outputs.