Patent ID: 9058043
Filing Date: 2015-06-16
Classification: G05F,H02M

Abstract:
1. A voltage converter comprising: a constant on time signal generator generating a first driving signal and a second driving signal; a first transistor having a first terminal, a second terminal, and a control terminal, the first terminal of the first transistor receiving a power supply voltage, the control terminal receiving the first driving signal; a second transistor having a first terminal, a second terminal, and a control terminal, the first terminal of the second transistor coupled to the second terminal of the first transistor, the control terminal of the second transistor receiving the second driving signal, the second terminal of the second transistor connected to a reference ground voltage; an inductor series-connected between the second terminal of the first transistor and an output terminal of the voltage converter, an output signal being generated at the output terminal of the voltage converter; and a ripple injection circuit coupled to the output signal and generating a ripple injection signal according to the output signal, wherein, the constant on time signal generator generates the first and second driving signals according to the ripple injection signal, the output signal, and a reference signal, wherein the ripple injection circuit generates a ramp current according to the output signal and generates a ramp voltage to be the ripple injection signal according to the ramp current.