Voltage converter and regulating circuit control chip

A regulating circuit control chip, providing a pulse signal to control a regulating circuit to regulate an input voltage to an output voltage, comprising:

• a first comparator, comparing a first reference signal with a feedback value of the output voltage to generate a first comparator output, the first reference signal fluctuating with an active duration of the pulse signal;
• an active-duration adjusting circuit, starting the active duration of the pulse signal in accordance with the first comparator output and ending the active duration of the pulse signal in accordance with a second reference signal, the second reference signal having a dc value depending on a duty cycle of the pulse signal;
• a first pin, coupled to the regulating circuit to operate the regulating circuit in accordance with the pulse signal;
• a second pin, coupled to receive the output voltage;
• and
• a load compensation circuit, performing a first-order filtering and a second-order filtering on the pulse signal to generate a first-order filtered signal and a second-order filtered signal, respectively,
• wherein the first-order filtered signal and the second-order filtered signal are used in generating the first reference signal and the second-order filtered signal works as the second reference signal.