Patent ID: 9203308
Filing Date: 2015-12-01
Classification: G05F,H02M

Abstract:
1. A power converter, comprising: a ramp generating unit, for providing a ramp signal; a first comparator, coupled to the ramp generating unit and receiving the ramp signal and a control signal to provide a normal operation control signal, wherein the control signal is related to an output voltage of the power converter and a reference voltage; a second comparator, coupled to the ramp generating unit and receiving the ramp signal and the control signal to provide a dynamic response control signal; and a pulse width modulation (PWM) signal generating unit, coupled to the first comparator and the second comparator and generating a PWM signal according to the normal operation control signal or the dynamic response control signal; wherein when the magnitude of the control signal is higher than a threshold of the ramp signal, the second comparator provides the dynamic response control signal to the PWM signal generating unit to control the PWM signal generating unit to adjust a duty cycle of the PWM signal.