Patent ID: 11863069
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 12:
13. A system comprising:
a switching converter controller having:
a driver circuit;
a control loop coupled to driver circuit and configured to:
provide a clock signal to the driver circuit; and
selectively adjust a frequency of the clock signal responsive to a stopband detection signal indicating a switching frequency of the switching converter controller is within a predetermined stopband,
wherein the control loop is configured to:
determine whether a feedback error is equal to or less than a threshold; and
responsive to determining the feedback error is equal to or less than the threshold, adjust the frequency of the clock signal responsive to a pulse-frequency modulation (PFM) reference signal; and

wherein the PFM reference signal is adjusted to manage a frequency adjustment direction and frequency adjustment amount applied to the clock signal responsive to the stopband detection signal and feedback error.