公开(公告)号：US20240297568A1

公开(公告)日：2024-09-05

申请号：US18458996

申请日：2023-08-30

Applicant: Richtek Technology Corporation

Inventor： Ta-Yung Yang ,  Chao-Chi Chen ,  Yu-Chang Chen ,  Syuan-Zong Lan ,  Yi-Ju Lu

IPC: H02M1/00 ,  G05F1/56 ,  H02M3/335

CPC classification number: H02M1/0045 ,  G05F1/56 ,  H02M3/33507

Abstract: A voltage regulator for converting an input voltage to an output voltage includes: a first and a second high-side switch, a first and a second low-side switch and a control terminal which is for generating a reference voltage or determining a forced pass-through mode. The output voltage is determined according to the reference voltage during a buck mode and a boost mode. When the input voltage is higher than a first threshold, the voltage regulator is operated in the buck mode. When the input voltage is lower than a second threshold, the voltage regulator is operated in the boost mode. When the input voltage is lower than the first threshold and is higher than the second threshold, the voltage regulator is operated in a pass-through mode. When a voltage of the control terminal is lower than a third threshold, the voltage regulator is operated in the forced pass-through mode.