公开(公告)号：US20230378787A1

公开(公告)日：2023-11-23

申请号：US18048819

申请日：2022-10-21

Applicant: SK hynix Inc.

Inventor： Su Il JIN ,  In Bo SHIM ,  Won Seob SONG ,  Jin Yeon WON

IPC: H02J7/00

CPC classification number: H02J7/005 ,  H02J7/007182 ,  H02J7/00032 ,  H02J2207/50

Abstract: A power supply apparatus may include a charging circuit configured to receive an external voltage and to generate a charging voltage by charging and discharging energy by switching according to a level of the charging voltage; an auxiliary power circuit configured to store an electric charge using the charging voltage; and a health monitoring circuit configured to determine a charging health state of the auxiliary power circuit by counting a number of switchings of the charging circuit during an interval in which the charging voltage rises to a first level from a second level, the determined charging health state being based on the number of switchings.