Patent ID: 11909315
Assignee: RICHTEK TECHNOLOGY CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 22:
23. A control method for controlling a switching regulator, comprising:
operating a power switch according to a switch control signal, to control a conduction status of an inductor, so as to convert an input voltage to an output voltage;
generating an amplification signal according to a difference between a low-pass filtered signal and a feedback signal, wherein the feedback signal is related to the output voltage and wherein the low-pass filtered signal is related to a signal generated by low-pass filtering the reference signal based on a first predetermined bandwidth, and wherein the reference signal is related to dynamic change of a target level of the output voltage;
generating an adjustment signal according to a difference between the feedback signal and a fast response signal;
generating a ramp signal according to a clock signal; and
comparing the amplification signal and the ramp signal, to generate a pulse width modulation (PWM) signal, so as to generate the switch control signal according to the PWM signal;
wherein the adjustment signal is configured to operably adaptively adjust the amplification signal or the ramp signal, to reduce a response time or to mitigate or avoid an overshoot or an undershoot of the output voltage;
wherein a voltage level of the fast response signal is between a voltage level of the low-pass filtered signal and a voltage level of the reference signal.