Hybrid hysteretic control system

A device, comprising:

• a first comparator having a first input configured to receive a first ramp and a second input configured to receive an input voltage, wherein the first comparator is configured to generate a first triggering signal;
• a second comparator having a first input configured to receive the input voltage and a second input configured to receive a second ramp, wherein the second comparator is configured to generate a second triggering signal;
• a pulse-width modulation (PWM) controller configured to generate a first control signal and a second control signal based on the first and second triggering signals;
• a ramp generator configured to generate the first ramp for the first comparator and the second ramp for the second comparator;
• an analog-to-digital converter (ADC) having an ADC output;
• an adder having a first input, a second input coupled to the ADC output, and an adder output;
• and
• a voltage controller having an input coupled to the adder output and an output coupled to the ramp generator.

An apparatus, comprising:

• a first comparator configured to receive a first ramp and generate a first triggering signal;
• a second comparator configured to receive a second ramp and generate a second triggering signal, wherein the first ramp and the second ramp are offset by half a period T;
• a pulse-width modulation (PWM) controller configured to generate a first control signal and a second control signal based on the first and second triggering signals;
• a ramp generator configured to generate the first ramp and the second ramp;
• an analog-to-digital converter (ADC) having an ADC output;
• an adder having a positive input, a negative input coupled to the ADC output, and an adder output;
• and
• a voltage controller having an input coupled to the adder output and an output coupled to the ramp generator.