公开(公告)号：US20220381807A1

公开(公告)日：2022-12-01

申请号：US17827084

申请日：2022-05-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： SUNGMIN YOO ,  JAESEUNG LEE ,  TAEHWANG KONG ,  JUNHYEOK YANG

IPC: G01R19/165 ,  G01R15/04

Abstract: A voltage level detector includes a voltage divider that generates a first division voltage and a second division voltage. A first comparator compares any one of the first and second division voltages with a reference. A second comparator compares the other of the first and second division voltages with the reference. A first switch converts a connection path between the first and second division voltages and the first and second comparators based on a clock signal. A determination circuit determines, based on a first comparison signal and a second comparison signal, whether the voltage level detector is normal. A second switch converts a connection path between the first and second comparison signals and input terminals of the determination circuit based on the clock signal.

公开(公告)号：US20210294365A1

公开(公告)日：2021-09-23

申请号：US17069500

申请日：2020-10-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： SUNGMIN YOO ,  Joowon Park ,  Tae-Hwang Kong ,  Sangho Kim ,  Hyunmyoung Kim ,  Jaeseung Lee

IPC: G05F1/46 ,  G05F1/565 ,  G06F1/3206 ,  G05F3/16

Abstract: A power manager circuit is provided. The power manager circuit includes a bandgap reference circuit, first and second monitoring circuits, and a reference buffer. The bandgap reference circuit generates a first voltage, based on an external voltage that is external to the power manager circuit. The first monitoring circuit determines a logical value of a first alarm signal, based on whether a first voltage level of the first voltage is within a first range. The reference buffer generates a second voltage, based on the first voltage. The second monitoring circuit determines a logical value of a second alarm signal, based on whether a second voltage level of the second voltage is within a second range.