Patent ID: 9559604
Date: 2017-01-31
CPC Classifications: H02M,Y02B

Claim:
1. A DC/DC converter comprising: an output voltage regulation circuit configured to regulate an output voltage of the DC/DC converter, so as to output a duty cycle regulation signal; a PWM generator electrically coupled to the output voltage regulation circuit, and configured to generate a first duty cycle signal according to a first clock signal and the duty cycle regulation signal; a detection circuit configured to output a control signal according to a second clock signal and a feedback signal, wherein the second clock signal and the first clock signal keep the first duty cycle signal and the control signal in a same frequency, and the feedback signal is used to detect whether or not a transient change of an input voltage of the DC/DC converter occurs; and a CBC regulation circuit electrically coupled to the PWM generator and the detection circuit, and configured to output a second duty cycle signal according to the first duty cycle signal and the control signal, wherein when a transient change of the input voltage occurs, the control signal is a square wave signal, and the second duty cycle signal is a signal which is obtained by performing a logic AND operation with the first duty cycle signal and the control signal.