Control circuit for hybrid switched-mode power converter

Abstract

A control circuit is configured to control a hybrid switched-mode power converter which includes a plurality of transistors, a flying capacitor, and an inductor circuit. The control circuit includes: a charge signal for controlling a first transistor among the plurality of transistors to generate a charge current, such that a first power voltage charges the flying capacitor through the first transistor; and a discharge signal for controlling a second transistor among the plurality of transistors to generate a discharge current, such that the flying capacitor is discharged through the second transistor. The charge and discharge signals are non-overlapping. The control circuit performs at least one of: adjusting a pulse width of the charge signal, and adjusting a pulse width of the discharge signal, based on a voltage across the flying capacitor, such that the voltage across the flying capacitor is regulated within an error range .

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