公开(公告)号：US20230231398A1

公开(公告)日：2023-07-20

申请号：US18058312

申请日：2022-11-23

Applicant: Richtek Technology Corporation

Inventor： Kuan-Yu Chen ,  Tsung-Wei Huang ,  Tsan-Huei Wu ,  Ye-Sing Luo

IPC: H02J7/00

CPC classification number: H02J7/0063 ,  H02J7/007 ,  H02J7/00304 ,  H02J7/00714

Abstract: A charger circuit includes a power stage circuit operating at least one power switch according to an operating signal to convert an input power into an output power to charge a battery and/or to provide the output power to a load, wherein the output power includes a charging power and/or a load power; a control generating the operating signal according to a voltage amplifying signal; and a voltage error amplifier circuit comparing a voltage sensing signal relevant to a charging voltage of the charging power or a load voltage of the load power with a voltage reference level in a voltage hysteresis mode of a discontinuous conduction mode, so as to generate the voltage amplifying signal; wherein the control circuit adjusts the charging voltage or the load voltage according to the voltage amplifying signal, so as to maintain the charging voltage or the load voltage within a predetermined range.