Pulse width modulation techniques for a multiphase voltage converter

A voltage regulator, comprising:

• a compensation circuit including an output;
• a first comparator coupled to the output of the compensation circuit;
• a second comparator;
• and
• a control circuit coupled to an output of the first comparator and an output of the second comparator;
• wherein:
• the compensation circuit determines an output voltage of the voltage regulator exceeds a programmed value;
• the second comparator indicates at the output of the second comparator one of an inductor current is less than zero amperes in the voltage regulator and the inductor current is equal to or greater than zero amperes;
• the control circuit is configurable to tri-state a pulse width modulation (PWM) pulse responsive to the second comparator indicating the inductor current is less than zero amperes;
• and
• the control circuit is configurable to provide a non-tri-state PWM pulse responsive to the second comparator indicating the inductor current is equal to or greater than zero amperes.

A system, comprising:

• a driver;
• and
• a controller coupled to the driver, wherein the controller is configured to:
• determine an overshoot condition has occurred in a switching voltage regulator, wherein the overshoot condition indicates an output voltage has crossed a predetermined threshold;
• provide a truncated pulse width modulation (PWM) pulse, wherein the truncated PWM pulse includes a predetermined on-time;
• and
• responsive to determining the overshoot condition is finished, provide a non-truncated PWM pulse.