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公开(公告)号：US20180284830A1
公开(公告)日：2018-10-04
申请号：US15713215
申请日：2017-09-22
Applicant: Qualcomm Incorporated
Inventor： Chi Fan Yung , Xiaodan Zou , Ngai Yeung Ho , Hua Guan , Kan Li
Abstract: An integrated circuit is disclosed for current-controlled voltage regulation. In an example aspect, the integrated circuit includes a voltage regulator and a current-controlled clamp. The voltage regulator has a regulator output node and produces a regulator current. The voltage regulator includes an error amplifier and an output transistor. The error amplifier has first and second input nodes and an error amplifier output node, with the first input node coupled to a reference voltage. The error amplifier generates an error amplifier output voltage at the output node. The output transistor is coupled between the error amplifier output node and the regulator output node. The output transistor is coupled to the second input node via the regulator output node to establish a feedback path for the voltage regulator. The current-controlled clamp is coupled to the error amplifier output node and clamps the error amplifier output voltage based on the regulator current.
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公开(公告)号：US10274986B2
公开(公告)日：2019-04-30
申请号：US15713215
申请日：2017-09-22
Applicant: Qualcomm Incorporated
Inventor： Chi Fan Yung , Xiaodan Zou , Ngai Yeung Ho , Hua Guan , Kan Li
Abstract: An integrated circuit is disclosed for current-controlled voltage regulation. In an example aspect, the integrated circuit includes a voltage regulator and a current-controlled clamp. The voltage regulator has a regulator output node and produces a regulator current. The voltage regulator includes an error amplifier and an output transistor. The error amplifier has first and second input nodes and an error amplifier output node, with the first input node coupled to a reference voltage. The error amplifier generates an error amplifier output voltage at the output node. The output transistor is coupled between the error amplifier output node and the regulator output node. The output transistor is coupled to the second input node via the regulator output node to establish a feedback path for the voltage regulator. The current-controlled clamp is coupled to the error amplifier output node and clamps the error amplifier output voltage based on the regulator current.
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公开(公告)号：US09946283B1
公开(公告)日：2018-04-17
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.
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