公开(公告)号：US20210288648A1

公开(公告)日：2021-09-16

申请号：US16820659

申请日：2020-03-16

Applicant: Apple Inc.

Inventor： Nathan F. Hanagami ,  Hao Zhou ,  Jianbao Wang ,  Ruopeng Wang ,  Ludmil N. Nikolov

IPC: H03K19/0185 ,  H03K19/003 ,  H03K19/173 ,  H03K19/21 ,  H03K19/017

Abstract: A level shifter circuit with an intermediate power domain and method for operating the same is disclosed. The level shifter circuit includes an input circuit, an output circuit, and an intermediate circuit. The input circuit is coupled to receive an input signal from a first voltage domain operating according to a first supply voltage, and generates a first intermediate signal. The intermediate circuit receives the first intermediate signal and generates a second intermediate signal. The output circuit receives the intermediate signal and provides an output signal into a second voltage domain operating at a second supply voltage different from the first. A voltage multiplexer is configured to provide one of the first or second supply voltages to the intermediate circuit depending on a state of the input signal.

公开(公告)号：US20250110543A1

公开(公告)日：2025-04-03

申请号：US18478355

申请日：2023-09-29

Applicant: Apple Inc.

Inventor： Nathan F Hanagami ,  Maryam Mortazavi ,  Ruopeng Wang ,  Ludmil N Nikolov ,  Floyd L Dankert ,  Enrico Zanetti ,  Jianbao Wang ,  Kiranjit Dhaliwal

IPC: G06F1/3234

Abstract: Systems and methods described herein correspond to supply harvesting operations. Power management circuitry may receive a supply voltage from other power management circuitry. This supply voltage may be a harvested supply from the other power management circuitry. Moreover, some of the power management circuitry may be operated as controller power management circuitry to supply the supply voltage via one or more rails and some of the power management circuitry may be operated as leaf power management circuitry to harvest the supply voltage from the one or more rails. Leaf power management circuitry may exclude a regulator, enabling that leaf power management circuitry to be entered into a lower power mode than previously enabled when the regulator was included.

公开(公告)号：US11128300B1

公开(公告)日：2021-09-21

申请号：US16820659

申请日：2020-03-16

Applicant: Apple Inc.

Inventor： Nathan F. Hanagami ,  Hao Zhou ,  Jianbao Wang ,  Ruopeng Wang ,  Ludmil N. Nikolov

IPC: H03L5/00 ,  H03K19/0185 ,  H03K19/003 ,  H03K19/017 ,  H03K19/21 ,  H03K19/173

Abstract: A level shifter circuit with an intermediate power domain and method for operating the same is disclosed. The level shifter circuit includes an input circuit, an output circuit, and an intermediate circuit. The input circuit is coupled to receive an input signal from a first voltage domain operating according to a first supply voltage, and generates a first intermediate signal. The intermediate circuit receives the first intermediate signal and generates a second intermediate signal. The output circuit receives the intermediate signal and provides an output signal into a second voltage domain operating at a second supply voltage different from the first. A voltage multiplexer is configured to provide one of the first or second supply voltages to the intermediate circuit depending on a state of the input signal.