公开(公告)号：US20230318581A1

公开(公告)日：2023-10-05

申请号：US18330492

申请日：2023-06-07

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Chia-Chen KUO ,  Yangsyu Lin ,  Yu-Hao Hsu ,  Cheng Hung Lee ,  Hung-Jen Liao ,  Jonathan Tsung-Yung Chang

IPC: H03K3/012

CPC classification number: H03K3/012

Abstract: The present disclosure describes an example circuit for selecting a voltage supply. The circuit includes a first control switch, a first voltage supply switch, a second control switch, and a second voltage supply switch. The first control switch is configured to receive a control signal and a first voltage supply. The first voltage supply switch is electrically coupled to the first control switch and is configured to receive a second voltage supply. The second voltage supply switch is electrically coupled to the second control switch and configured to receive the first voltage supply. The first and second voltage supply switches are configured to selectively output the first and second voltage supplies based on the control signal.

公开(公告)号：US20230054498A1

公开(公告)日：2023-02-23

申请号：US17406273

申请日：2021-08-19

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Chia-Chen KUO ,  Yangsyu LIN ,  Yu-Hao HSU ,  Cheng Hung LEE ,  Hung-Jen LIAO ,  Jonathan Tsung-Yung CHANG

IPC: H03K3/012

Abstract: The present disclosure describes an example circuit for selecting a voltage supply. The circuit includes a first control switch, a first voltage supply switch, a second control switch, and a second voltage supply switch. The first control switch is configured to receive a control signal and a first voltage supply. The first voltage supply switch is electrically coupled to the first control switch and is configured to receive a second voltage supply. The second voltage supply switch is electrically coupled to the second control switch and configured to receive the first voltage supply. The first and second voltage supply switches are configured to selectively output the first and second voltage supplies based on the control signal.

公开(公告)号：US20180348264A1

公开(公告)日：2018-12-06

申请号：US15941535

申请日：2018-03-30

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Chia-Chen KUO ,  Chiting CHENG ,  Wei-Jer HSIEH

IPC: G01R19/165 ,  G01R19/04 ,  G01R19/00 ,  H03K19/00 ,  H03K19/0944

CPC classification number: G01R19/16519 ,  G01R19/0038 ,  G01R19/04 ,  H03K19/0013 ,  H03K19/0944

Abstract: A voltage selection circuit includes: a power detection circuit configured to compare an output voltage with a first input voltage and a second input voltage, respectively; a latch circuit, coupled to the power detection circuit, and configured to flip respective logic states of a pair of output signals when the output voltage is lower than either the first input voltage or the second input voltage; and a selection circuit, coupled to the latch circuit, and configured to use either the first input voltage or the second input voltage as the output voltage based on the respective logic states of the pair of output signals.