公开(公告)号：US11811364B2

公开(公告)日：2023-11-07

申请号：US17845378

申请日：2022-06-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaehong Jung ,  Seunghyun Oh ,  Jinhyeon Lee ,  Gihyeok Ha ,  Seungjin Kim ,  Joomyoung Kim ,  Yelim Youn ,  Jaehoon Lee

IPC: H03B5/32 ,  G06F1/06 ,  H03B5/04 ,  H03B5/20

CPC classification number: H03B5/32 ,  G06F1/06 ,  H03B5/04 ,  H03B5/20 ,  H03B2200/0082

Abstract: A clock integrated circuit is provided. The clock integrated circuit includes: a first clock generator which includes a crystal oscillator configured to generate a first clock signal; and a second clock generator which includes a resistance-capacitance (RC) oscillator and a first frequency divider, and is configured to: generate a second clock signal using the first frequency divider based on a clock signal output from the RC oscillator; perform a first calibration operation for adjusting a frequency division ratio of the first frequency divider to a first frequency division ratio based on the first clock signal; and perform a second calibration operation for adjusting the first frequency division ratio to a second frequency division ratio based on a sensed temperature.

公开(公告)号：US12204389B2

公开(公告)日：2025-01-21

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 ,  G05F1/575 ,  G06F1/04 ,  H02M3/156 ,  H03K3/037

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.