公开(公告)号：US20200021298A1

公开(公告)日：2020-01-16

申请号：US16216226

申请日：2018-12-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Gyu Sik KIM ,  Woo Seok KIM ,  Tae Ik KIM ,  Hwan Seok YEO

IPC: H03L7/089 ,  H03L7/099

Abstract: A phase locked loop circuit includes a voltage controlled oscillator configured to output a clock signal having a predetermined frequency based in a control voltage, a phase frequency detector configured to compare the clock signal with a reference signal to output a first control signal and a second control signal, a charge pump configured to output the control voltage based on the first control signal and the second control signal, a voltage supply including an output terminal connected to an output terminal of the charge pump by a transmission switch, and a leakage remover circuit connected to the transmission switch and configured to remove a leakage current flowing through the transmission switch while the transmission switch is turned-off.

公开(公告)号：US20240106441A1

公开(公告)日：2024-03-28

申请号：US18466438

申请日：2023-09-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung Min LEE ,  Gyu Sik KIM ,  Seung Jin KIM ,  Jae Hong JUNG

IPC: H03L7/093 ,  G05F3/26 ,  H03L1/00 ,  H03L7/099

CPC classification number: H03L7/093 ,  G05F3/262 ,  H03L1/00 ,  H03L7/0995

Abstract: A phase locked loop circuit and a semiconductor device are provided. The phased locked loop circuit includes a reference current generator configured to generate a summed compensation current in which at least one of a process change, a temperature change or a power supply voltage change are compensated and output the summed compensation current as a reference current, a current digital-to-analog converter configured to convert the reference current into a control current in accordance with a digital code and a voltage control oscillator configured to generate a signal based on the control current, wherein the summed compensation current is based on weighted-averaging a first type compensation current and a second type compensation current in response to at least one of the process change, the temperature change or the power supply voltage change.