Patent ID: 8526203

Claim:
A system for regulating a power converter, the system comprising: a first signal generator configured to receive at least an input signal and generate at least a first output signal associated with demagnetization and a second output signal associated with sampling; a sampling component configured to receive at least the input signal and the second output signal, sample the input signal based on at least information associated with the second output signal, and generate at least a third output signal associated with one or more sampled magnitudes; an error amplifier configured to receive at least the third output signal and a first threshold voltage and generate at least a fourth output signal with a capacitor, the capacitor being coupled to the error amplifier; a compensation component configured to receive at least the fourth output signal and generate at least a compensation signal, the input signal being a combination of the compensation signal and a first sensed signal, the first sensed signal being associated with a first winding coupled to a secondary winding for a power converter, the secondary winding being related to an output current and an output voltage for the power converter; a first controller for regulating at least the output current, the first controller being configured to receive at least the first output signal and the third output signal and generate at least a first control signal based on at least information associated with the first output signal and the third output signal; a second controller for regulating at least the output voltage, the second controller being configured to receive at least the fourth output signal and generate at least a second control signal and a third control signal based on at least information associated with the fourth output signal; an oscillator configured to receive at least the first control signal and the second control signal and generate at least a clock signal; a second signal generator configured to receive at least the clock signal, the third control signal, and a fourth control signal, and generate at least a modulation signal; a gate driver configured to receive at least the modulation signal and output at least a drive signal to a switch, the switch being configured to affect a first current flowing through a primary winding coupled to the secondary winding; and a third controller for regulating at least a peak current, the third controller being configured to receive the third control signal, a second sensed signal, and a second threshold voltage, and output the fourth control signal to the second signal generator, the second sensed signal being associated with the first current flowing through the primary winding for the power converter.