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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
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.
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