公开(公告)号：US20230238883A1

公开(公告)日：2023-07-27

申请号：US18149677

申请日：2023-01-04

Applicant: Richtek Technology Corporation

Inventor： Hsien-Cheng Hsieh ,  Chieh-Han Kuo ,  Hsing-Shen Huang

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0025

Abstract: A conversion control circuit controls a power stage circuit of a switching power converter according to a first feedback signal and a second feedback signal, wherein the conversion control circuit includes an error amplifier circuit, a ramp signal generation circuit, a pulse width modulation circuit, and a quick response control circuit. The quick response control circuit performs a quick response control function, wherein the quick response control function includes: comparing the second feedback signal with at least one reference threshold to generate a quick response control signal; and when the second feedback signal crosses the reference threshold, adjusting a slope of a ramp signal according to the quick response control signal to accelerate an increase or decrease of the duty of a PWM signal, thereby accelerating the transient response of the switching power converter.

公开(公告)号：US12249914B2

公开(公告)日：2025-03-11

申请号：US18149677

申请日：2023-01-04

Applicant: Richtek Technology Corporation

Inventor： Hsien-Cheng Hsieh ,  Chieh-Han Kuo ,  Hsing-Shen Huang

IPC: H02M3/158 ,  H02M1/00

Abstract: A conversion control circuit controls a power stage circuit of a switching power converter according to a first feedback signal and a second feedback signal, wherein the conversion control circuit includes an error amplifier circuit, a ramp signal generation circuit, a pulse width modulation circuit, and a quick response control circuit. The quick response control circuit performs a quick response control function, wherein the quick response control function includes: comparing the second feedback signal with at least one reference threshold to generate a quick response control signal; and when the second feedback signal crosses the reference threshold, adjusting a slope of a ramp signal according to the quick response control signal to accelerate an increase or decrease of the duty of a PWM signal, thereby accelerating the transient response of the switching power converter.