公开(公告)号：US20240118733A1

公开(公告)日：2024-04-11

申请号：US18536328

申请日：2023-12-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： INSUNG KIM ,  JOOMYOUNG KIM ,  WOOSEOK KIM ,  TAEIK KIM

IPC: G06F1/26 ,  G05F1/56 ,  G06F1/04 ,  H03K3/037

CPC classification number: G06F1/26 ,  G05F1/56 ,  G06F1/04 ,  H03K3/037 ,  G05F1/575

Abstract: An electronic device including: a regulator circuit configured to output a regulated voltage based on a reference voltage and a feedback voltage; and an oscillator configured to generate an output frequency signal based on a reference frequency signal and the regulated voltage output from the regulator circuit, wherein the regulator circuit includes: a feedback loop configured to output the regulated voltage based on a difference between the reference voltage and the feedback voltage; a first capacitor; a precharge circuit connected to the feedback loop, and configured to charge the first capacitor with a second voltage which is based on a first voltage; a first switch configured to connect the precharge circuit with the first capacitor; and a second switch configured to connect the first capacitor with the feedback loop.

公开(公告)号：US20220345137A1

公开(公告)日：2022-10-27

申请号：US17509540

申请日：2021-10-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： KANGYEOP CHOO ,  INSUNG KIM ,  WOOSEOK KIM ,  TAEIK KIM ,  SUNGHYUCK LEE ,  CHANYOUNG JEONG

IPC: H03L7/089 ,  H03L7/10

Abstract: A phased locked loop includes; a load circuit that generates an output signal in response to a driving voltage, a frequency calibration circuit that generates a calibration signal in response to an output frequency of the output signal and a target frequency, and a regulator that generates the driving voltage in response to the calibration signal.

公开(公告)号：US20220311424A1

公开(公告)日：2022-09-29

申请号：US17702482

申请日：2022-03-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JUSUNG LEE ,  WOOSEOK KIM ,  TAEIK KIM ,  CHANYOUNG JEONG

IPC: H03K3/011 ,  G05F1/56 ,  H03K5/24

Abstract: A bandgap reference circuit includes a reference current generation circuit configured to output a bandgap reference current insensitive to a temperature change, by using a first voltage inversely proportional to temperature and a third voltage proportional to temperature. The third voltage is a difference between the first voltage and a second voltage. The bandgap reference circuit further includes a resistivity temperature coefficient cancellation circuit configured to remove a first current proportional to temperature from the bandgap reference current by using the third voltage, and a reference voltage generation circuit configured to output a bandgap reference voltage insensitive to a temperature change by using a second current inversely proportional to temperature and a first resistance proportional to temperature. The second current is generated by removing the first current from the bandgap reference current.

公开(公告)号：US20220107675A1

公开(公告)日：2022-04-07

申请号：US17394520

申请日：2021-08-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： INSUNG KIM ,  JOOMYOUNG KIM ,  WOOSEOK KIM ,  TAEIK KIM

IPC: G06F1/26 ,  G05F1/56 ,  H03K3/037 ,  G06F1/04

Abstract: An electronic device including: a regulator circuit configured to output a regulated voltage based on a reference voltage and a feedback voltage; and an oscillator configured to generate an output frequency signal based on a reference frequency signal and the regulated voltage output from the regulator circuit, wherein the regulator circuit includes: a feedback loop configured to output the regulated voltage based on a difference between the reference voltage and the feedback voltage; a first capacitor; a precharge circuit connected to the feedback loop, and configured to charge the first capacitor with a second voltage which is based on a first voltage; a first switch configured to connect the precharge circuit with the first capacitor; and a second switch configured to connect the first capacitor with the feedback loop.