Variable Frequency Soft-Switching Control of a Buck Converter

A modified buck regulator circuit, comprising:

• a pull-up switching mechanism;
• a pull-down switching mechanism that is coupled to the pull-up switching mechanism;
• an inductor having an upstream end that is coupled between the pull-up switching mechanism and the pull-down switching mechanism;
• a capacitor that is coupled to a downstream end of the inductor and in parallel with the pull-down switching mechanism;
• and
• a controller circuit that is coupled to the pull-up switching mechanism and the pull-down switching mechanism and configured to:
• measure a load current at an output of the modified buck converter circuit;
• determine, based on the load current, a time duration during which the pull-up switching mechanism is enabled;
• enable the pull-up switching mechanism for the time duration;
• and
• disable the pull-up switching mechanism after the time duration.