Controller and control method of multi-phase power converter

Abstract

A controller of a multi-phase power converter is disclosed. The multi-phase power converter includes first and second output stages for generating first-phase and second-phase output currents respectively. The controller includes a current sensing circuit and a current balancing control circuit. The current sensing circuit is coupled to the first output stage and the second output stage for sensing the first-phase output current and the second-phase output current to generate a first current sensing signal and a second current sensing signal. The current balancing control circuit is coupled to the current sensing circuit for receiving the first current sensing signal and the second current sensing signal. The current balancing control circuit further includes a delay unit for enabling the current balancing control circuit only after a delay period following by the second output stage response a phase-rising signal to generate the second-phase output current.

Dependencies are inferred from the claim text.