Asynchronous Non-Linear Control of Digital Linear Voltage Regulator

A voltage regulator comprising:

• an output configured to provide an output voltage;
• power transistors configured to switch between an on state and an off state;
• shift registers configured to control the switching of the power transistors, wherein at least a portion of the shift registers each comprise a reset input;
• a clockless comparator configured to compare the output voltage to a reference voltage, wherein the clockless comparator is in communication with at least a portion of the reset inputs.

A method for asynchronous voltage recovery comprising:

• providing a voltage regulator comprising digital power transistors, resettable registers, and a voltage comparator;
• comparing, with the voltage comparator, an output voltage of the voltage regulator to a reference voltage;
• providing, by the comparator, a reset signal to the resettable registers;
• providing, by the resettable registers, an asynchronous control signal;
• and
• activating, in response to the asynchronous control signal, each of the digital power transistors to an on state.