Patent ID: 9729045
Date: 2017-08-08
CPC Classifications: H02M

Claim:
1. A power converter, comprising: a switched power stage configured to generate an output voltage from an input voltage, and a controller configured to generate a pulse width modulated (PWM) signal to control a switching of the switched power stage in dependence of a voltage error signal, the voltage error signal being a difference between a reference voltage and the output voltage; the controller comprising: a synchronizer configured to generate a first clock signal for clocking a low frequency domain of the controller; a digital PWM controller clocked by the first clock signal and configured to determine an on-time information of the PWM signal; a PWM generator configured to generate the PWM signal based on the on-time information; and wherein the synchronizer is configured to synchronize a frequency of the PWM signal to a frequency imposed by an external reference signal by synchronizing a frequency of the first clock signal to the frequency imposed by the external reference signal.