Charge pump circuits having frequency synchronization with switching frequency of power converters

摘要

A control circuit of a power converter is provided. The control circuit includes a switching circuit and a charge pump circuit. The switching circuit generates a switching signal for controlling the power converter. The charge pump circuit includes an oscillator for generating an oscillation signal synchronized with the switching signal. The oscillation signal is coupled to control a switch of the charge pump circuit for generating a voltage source.

主权项

1. A control circuit of a power converter, comprising:
a switching circuit generating a switching signal for controlling the power converter; and a charge pump circuit comprising an oscillator for generating an oscillation signal synchronized with the switching signal; wherein the oscillation signal is coupled to control a switch of the charge pump circuit for generating a voltage source.