公开(公告)号：US20220334604A1

公开(公告)日：2022-10-20

申请号：US17721541

申请日：2022-04-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jungmoon KIM ,  Jeongpyo KIM ,  Insuk KIM ,  Yeonjeong LEE

IPC: G05F1/575

Abstract: An integrated circuit includes: a power supply circuit configured to generate a supply voltage from at least one of first and second power source voltages; and a system load configured to operate by receiving the supply voltage through an output node of the power supply circuit, wherein the power supply circuit includes: a first low drop-output (LDO) regulator configured to generate, from the first power source voltage, a first load current flowing to the system load through the output node; and a second LDO regulator configured to selectively generate a second load current flowing to the system load through the output node, from the second power source voltage based on a difference between voltages of internal nodes of the first LDO regulator.

公开(公告)号：US20240345611A1

公开(公告)日：2024-10-17

申请号：US18756699

申请日：2024-06-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jungmoon KIM ,  Jeongpyo KIM ,  Insuk KIM ,  Yeonjeong LEE

IPC: G05F1/575 ,  G09G3/20

CPC classification number: G05F1/575 ,  G09G3/20 ,  G09G2330/021

Abstract: An integrated circuit includes: a power supply circuit configured to generate a supply voltage from at least one of first and second power source voltages; and a system load configured to operate by receiving the supply voltage through an output node of the power supply circuit, wherein the power supply circuit includes: a first low drop-output (LDO) regulator configured to generate, from the first power source voltage, a first load current flowing to the system load through the output node; and a second LDO regulator configured to selectively generate a second load current flowing to the system load through the output node, from the second power source voltage based on a difference between voltages of internal nodes of the first LDO regulator.

公开(公告)号：US20170097649A1

公开(公告)日：2017-04-06

申请号：US14874758

申请日：2015-10-05

Applicant: Samsung Electronics Co., Ltd. ,  Korea University Research and Business Foundation

Inventor： JaeYoul LEE ,  Jeongpyo KIM ,  Yong Sin KIM ,  Seong Jin YUN

IPC: G05F1/575 ,  G09G3/36

CPC classification number: G05F1/575 ,  G09G3/3696 ,  G09G2330/021

Abstract: A low drop-out (LDO) regulator includes a pass transistor, a feedback circuit, an error amplifier, and a compensation unit. The pass transistor is configured to regulate a power supply and output an output voltage according to a control signal. The feedback circuit is configured to generate a feedback voltage based on the output voltage. The error amplifier is configured to output a comparison signal in response to a reference voltage and the feedback voltage. The compensation circuit is configured to generate a negative capacitance in association with a first node connected to a gate electrode of the pass transistor.