公开(公告)号：US20240388193A1

公开(公告)日：2024-11-21

申请号：US18494888

申请日：2023-10-26

Applicant: Richtek Technology Corporation

Inventor： Chun-Lien Chen ,  Yung-Jen Chen ,  Chong-Rong Lee

IPC: H02M1/088 ,  H02M1/00 ,  H02M3/158

Abstract: A switching converter includes: a power stage circuit configured to switch at least one switch of the power stage circuit according to a control signal, to convert an input voltage to an output voltage; and a control circuit configured to execute modulation on a pulse width according to a feedback voltage related to the output voltage, to generate the control signal in a heavy load status. In a light load status, and when the switching converter operates at a discontinuous conduction mode (DCM), after an inductor current flowing through the power stage circuit has already become a zero current, the control circuit ceases executing modulation on the pulse width according to the feedback voltage and ceases keeping a compensation voltage correlated with the output voltage at a present level.