公开(公告)号：US11595041B1

公开(公告)日：2023-02-28

申请号：US17487550

申请日：2021-09-28

Applicant: Arm Limited

Inventor： Jacques Bernard Claude Guillaume ,  Mikael Yves Marie Rien ,  Fabio Toni Braz ,  Jeremy Patrick Dubeuf

IPC: H03K17/687

Abstract: There is provided an apparatus and method, the apparatus comprising a power input and a switch isolation circuit to provide isolation between the power input and a protected switch responsive to a timing signal. The switch isolation circuit comprises a switch isolation charge store, and a buffer circuit to receive power from the switch isolation charge store and coupled between the timing signal and the protected switch. The switch isolation circuit is configured to, in response to the timing signal having the first value, operate in a powered mode in which the switch isolation charge store receives power from the power input; and, in response to the timing signal having the second value, operate in an isolation mode in which the switch isolation charge store is isolated from the power input.