Patent ID: 9455632
Filing Date: 2016-09-27
CPC Classification: H02M

Claim Text:
1. A voltage converter, comprising: a constant turned-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, wherein the first terminal receives a power voltage, the control terminal receives the first driving signal, and the second terminal generates a switching voltage; a second transistor, having a first terminal, a second terminal and a control terminal, wherein the first terminal of the second transistor is coupled to the second terminal of the first transistor, the control terminal of the second transistor receives the second driving signal, and the second terminal of the second transistor is coupled to a reference ground terminal; an inductor, connected in series between the second terminal of the first transistor and an output terminal of the voltage converter, wherein the voltage converter receives the switching voltage and generates an output signal at the output terminal; a ripple signal compensator, coupled to the output terminal and the second terminal of the first transistor, and generating an adjusted ripple signal according to the switching voltage and the output signal; a ripple injection circuit, coupled to the ripple signal compensator, and generating a ripple injection signal according to the adjusted ripple signal, wherein the constant turned-on time signal generator generates the first driving signal and the second driving signal according to the ripple injection signal and a reference voltage.