a pulse - width modulation controller to supply power to electronic components using a phase lock loop is presented . a pwm controller comprises an input node operable to receive a reference signal and a phase - locked loop . the pll comprises an oscillator operable to receive an error - correction signal and to generate an oscillator signal having a frequency that is related to the error - correction signal , a phase - frequency detector coupled to the oscillator and operable to receive the reference signal and to generate the error - correction signal based upon a phase difference between the reference signal and a feedback signal , and a suppression circuit coupled to the pfd and operable to periodically enable the pfd to generate the error - correction signal .