Patent ID: 9106133
Filing Date: 2015-08-11
Classification: H02M

Abstract:
1. A method of controlling current conduction in a single-inductor-multiple-output (SIMO) converter comprising a plurality of output channels, the method comprising: determining, with at least one first controller, one or more fixed ratios of channel conduction periods between the plurality of output channels; determining, with at least one second controller, an estimate for a single discharge period of a switching cycle, wherein the switching cycle comprises a charge period during which the SIMO converter stores current and the single discharge period during which the SIMO converter discharges at least some of the stored current through the plurality of output channels; determining, with at least one third controller, channel conduction periods for the plurality of output channels, wherein each of the channel conduction periods is based on the one or more fixed ratios of channel conduction periods and the estimate for the single discharge period; and outputting, with at least one fourth controller, switching signals to alternatingly conduct current through the plurality of output channels over the channel conduction periods during the single discharge period of the switching cycle.