公开(公告)号：US20220181974A1

公开(公告)日：2022-06-09

申请号：US17604765

申请日：2019-08-19

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Yuyang LIU ,  Bin LI ,  Yanqi ZHENG ,  Zhaohui WU

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/14

Abstract: This disclosure discloses a single-inductor multiple-output DC-DC buck converter, which includes a power conversion unit and i charge controllers, as well as a phase-locked loop, a logic unit, a driving unit, and an input trunk duty ratio generation unit. The charge controllers are connected to the driving unit through the logic unit. The logic unit is further connected to the phase-locked loop and the phase-locked loop is connected to the driving unit through the input trunk duty ratio generation unit. The driving unit is connected to the power conversion unit. The disclosure applies charge control to every output branch path, and adopts a phase-locked loop as the cycle control, which effectively suppresses the cross modulation effect of every branch path, and does not require the last branch path to have a sufficiently heavy load, which broadens the load range, while taking into account other performance requirements concurrently.