Patent ID: 8049472
Filing Date: 2011-11-01
Classification: H02M

Abstract:
1. A single inductor multiple output switching device comprising: a plurality of time division multiplexing switches for switching current through an inductor of the single inductor multiple output switching device, the plurality of time division multiplexing switches producing a plurality of outputs; an error calculation circuit operatively coupled to the plurality of outputs for determining a calculated error from the errors of plurality of outputs, based on a difference of the errors of the outputs if the errors are different, which senses a change in output voltages of the plurality of outputs; a time slot generation circuit that generates a plurality of time slots for controlling the plurality of time division multiplexing switches according to the calculated error; and a pulse width modulation control circuit operatively coupled to the time slot generation circuit for controlling, according to the time slot, a plurality of pulse width modulation switches of a switching stage of the single inductor multiple output switching device capable of operating in a continuous conduction mode of operation.