公开(公告)号：US20230396142A1

公开(公告)日：2023-12-07

申请号：US18206280

申请日：2023-06-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minyong JUNG ,  Bongtae MIN ,  Hyoungseok OH ,  Wookwan LEE ,  Jinsoo LEE ,  Heungjun JEON

IPC: H02M1/00

CPC classification number: H02M1/0009 ,  H02M1/0025

Abstract: A device including a first switching converter configured to generate a negative supply voltage based on an input voltage; a load current sensor configured to sense a magnitude of a load current passing through a load to which the negative supply voltage is provided; and a first input current detector configured to detect a magnitude of a first input current provided to the first switching converter based on a duty cycle of the first switching converter and the magnitude of the load current.