Patent ID: 6815999
Filing Date: 2004-11-09
Classification: H02M

Abstract:
A driver circuit, comprising:a charge pump which includes a plurality of stages, each of the plurality of stages comprising a charge storage device for storing a charge and a switching device for coupling a stage to a succeeding stage or an output; and a phase generator configured to output first control signals for controlling charging of each charge storage device and second control signals for controlling switching of each switching device; wherein feedback signals from each of said plurality of stages are fed back to said phase generator, the feedback signals comprising first feedback signals indicating a state of each charge storage device and second feedback signals indicating a state of each switching device; and wherein said phase generator uses the feedback signals to provide adaptive control over the timing of the charging of each charge storage device and the switching of each switching device such that the phase generator outputs the second control signal to switch the switching device of a particular stage to an on state only after the first feedback signal for the particular stage indicates termination of charging of the charge storage device of the particular stage.