Overshoot detection in voltage regulators

A method of voltage regulation comprising:

• obtaining a current sense amplification voltage signal corresponding to a load-line current;
• determining, based on a comparison of the current sense amplification voltage signal to a reference value, that the load-line current is flowing in a forward direction from a first end of an inductor to a capacitor;
• obtaining a voltage regulation target signal;
• obtaining a feedback signal based on an output voltage of the load-line;
• determining, based on a comparison of the voltage regulation target signal to the feedback signal, that a voltage overshoot is in progress;
• and
• opening a transistor disposed between a second end of the inductor and a reference ground based on the determination that the load-line current is flowing in the forward direction and the determination that the voltage overshoot is in progress, the opening of the transistor increasing a voltage differential across the inductor to increase a rate of dissipation of energy stored in the transistor to the capacitor.

A voltage regulator feedback circuit comprising:

• a first comparator, the first comparator being configured to generate an overshoot signal based on a comparison of a voltage regulation target signal to a feedback voltage signal, the feedback voltage signal being determined based at least in part on an output voltage measured at a first end of an inductor of a voltage regulator and a current sense amplifier voltage corresponding to a load current measured at the first end of the inductor;
• a second comparator, the second comparator being configured to generate a forward current signal based on a comparison of the current sense amplifier voltage to a reference voltage;
• and
• a logic circuit, the logic circuit being configured to generate a breaking signal based on the overshoot signal and the forward current signal, a gate signal of a transistor connected between a second end of the inductor and a reference ground being generated based at least in part on the breaking signal, the gate signal being configured to cause the transistor to open based at least in part on the breaking signal having a true value.