公开(公告)号：US20170199537A1

公开(公告)日：2017-07-13

申请号：US15230849

申请日：2016-08-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hoang Quoc DUONG ,  Sung Woo MOON ,  Hyun Seok SHIN ,  Dong Jin KEUM

IPC: G05F1/575

CPC classification number: G05F1/575

Abstract: A voltage regulator may include an error amplifier configured to amplify a difference between a reference voltage and a feedback voltage and generate a first amplified voltage based thereon; a power transistor between a second voltage supply node and an output node of the voltage regulator, the power transistor including a gate configured to receive a gate voltage; a buffer between a first voltage supply node and a ground, the buffer configured to generate the gate voltage based on the first amplified voltage; a voltage divider between the output node and the ground, the voltage divider configured to generate the feedback voltage based on the output voltage; and a control circuit configured to connect the output node to the ground through the gate of the power transistor based on the output voltage and the gate voltage.

公开(公告)号：US20170131358A1

公开(公告)日：2017-05-11

申请号：US15286765

申请日：2016-10-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kudo RYOTARO ,  Dong Jin KEUM ,  Byung Chul JEON ,  Jin Sub CHOI

IPC: G01R31/36 ,  G01R1/20

CPC classification number: G01R31/3606 ,  G01R1/203 ,  G01R15/08

Abstract: A fuel gauge system for measuring the amount of current in a battery is provided. The fuel gauge system includes a first resistive element connected in series to the battery, a second resistive element connected in series to the first resistive element, a first switch connected in parallel to the second resistive element to control a current flowing in the second resistive element, a second switch connected in series to the second resistive element to control the current flowing in the second resistive element, a controller configured to output a first switching signal to the first switch and output a second switching signal to the second switch, and a fuel gauge circuit configured to measure a battery current flowing in the first resistive element and the second resistive element.