公开(公告)号：US20210336611A1

公开(公告)日：2021-10-28

申请号：US17247160

申请日：2020-12-02

Applicant: QUALCOMM Incorporated

Inventor： Jize JIANG ,  Kan LI

IPC: H03K5/04

Abstract: According to certain aspects, a driver includes an output transistor coupled between a first rail and an output of the driver, a first current source coupled to a gate of the output transistor, a second current source, and a switch, wherein the switch and the second current source are coupled in series between the gate of the output transistor and a second rail. The driver also includes a current sensor configured to generate a sense current based on an output current of the driver, and a reference current source configured to generate a reference current, wherein the current sensor and the reference current source are coupled to a control input of the switch.

公开(公告)号：US20190146531A1

公开(公告)日：2019-05-16

申请号：US15813629

申请日：2017-11-15

Applicant: QUALCOMM Incorporated

Inventor： Chi Fan YUNG ,  Hua GUAN ,  Ngai Yeung HO ,  Kan LI

IPC: G05F1/575 ,  G11C7/06 ,  G05F1/563 ,  G11C11/4074 ,  G11C5/14 ,  G05F3/24 ,  G11C7/10

Abstract: Certain aspects of the present disclosure generally relate a regulator. For example, the regulator may include a control stage, a sense capacitor having first and second terminals, the first terminal coupled to an output of the voltage regulator, and a current amplifier having an input coupled to the second terminal of the sense capacitor and an output coupled to the control stage. The control stage of the regulator may adjust the output voltage of the regulator based at least in part on a current generated by the current amplifier.

公开(公告)号：US20180107232A1

公开(公告)日：2018-04-19

申请号：US15296608

申请日：2016-10-18

Applicant: QUALCOMM Incorporated

Inventor： Chi Fan YUNG ,  Xiaodan ZOU ,  Ngai Yeung HO ,  Kan LI ,  Hua GUAN

IPC: G05F1/575

CPC classification number: G05F1/575

Abstract: Certain aspects of the present disclosure generally relate a dual feedback loop regulator. For example, the regulator may include a first amplifier having an output coupled to an output node of the regulator, the output node further coupled to a first feedback path and a second feedback path of the regulator. A first input of a second amplifier may be coupled to the first feedback path and a second input of the second amplifier may be coupled to a reference path. The regulator may also include a transconductance stage having a first transistor and a first current source, the first transistor and the current source coupled to the first feedback path and the second feedback path, and a transimpedance stage coupled to the transconductance stage and an input of the first amplifier.