公开(公告)号：US11619959B2

公开(公告)日：2023-04-04

申请号：US17029991

申请日：2020-09-23

Applicant: Apple Inc.

Inventor： Gokce Gurun ,  Sanjeev K. Maheshwari ,  Wenbo Liu

IPC: G05F1/575

Abstract: A voltage regulator circuit included in a computer system may include a switch device coupled between an input power supply node and a regulated power supply node. The switch device may change a value of a supply current flowing from the input power supply node and the regulated power supply node to regulate a voltage level of the regulated power supply node. A noise cancelation current may be feed forward onto a control terminal of the switch device to cancel noise on the regulated power supply node resulting from noise present on the input power supply node.

公开(公告)号：US12028077B1

公开(公告)日：2024-07-02

申请号：US18172738

申请日：2023-02-22

Applicant: Apple Inc.

Inventor： Wenbo Liu ,  Gokce Gurun ,  Ajay M. Rao ,  Sanjeev K. Maheshwari

IPC: H03K5/24 ,  H03K3/037 ,  H03K19/20

CPC classification number: H03K5/24 ,  H03K3/037 ,  H03K19/20

Abstract: A phase detector circuit for use with a multi-level signaling communication protocol on a serial communication link is disclosed. The phase detector circuit employs multiple phase and logic circuits to detect data state changes between adjacent ones of voltage levels corresponding to different data states in the communication protocol, and generates early/late signals using the detected data state changes. The phase detector circuit statistically filters data state transitions between non-adjacent voltage levels to improve phase locking and reduce recovered clock jitter.

公开(公告)号：US20220091622A1

公开(公告)日：2022-03-24

申请号：US17029991

申请日：2020-09-23

Applicant: Apple Inc.

Inventor： Gokce Gurun ,  Sanjeev K. Maheshwari ,  Wenbo Liu

IPC: G05F1/575

Abstract: A voltage regulator circuit included in a computer system may include a switch device coupled between an input power supply node and a regulated power supply node. The switch device may change a value of a supply current flowing from the input power supply node and the regulated power supply node to regulate a voltage level of the regulated power supply node. A noise cancelation current may be feed forward onto a control terminal of the switch device to cancel noise on the regulated power supply node resulting from noise present on the input power supply node.