公开(公告)号：US10958168B2

公开(公告)日：2021-03-23

申请号：US16426494

申请日：2019-05-30

Applicant: QUALCOMM Incorporated

Inventor： Linfei Guo ,  Chengwu Tao ,  Joseph Duncan ,  Xiaocheng Jing ,  Amir Parayandeh ,  Justin Philpott

IPC: H02M3/156 ,  H02M3/158 ,  H02M1/00

Abstract: Methods and apparatus for operating a switched-mode power supply (SMPS). One example method generally includes comparing a signal representative of an amount of current across an inductive element of the SMPS with at least three thresholds, selecting a configuration of the SMPS based on the comparison, and configuring the SMPS based on the selection.

公开(公告)号：US20160226379A1

公开(公告)日：2016-08-04

申请号：US14609203

申请日：2015-01-29

Applicant: QUALCOMM Incorporated

Inventor： Chi-Fan Yung ,  Vishal Gupta ,  Joseph Duncan

IPC: H02M3/158

CPC classification number: H02M3/158 ,  G01R31/40 ,  H02M1/32 ,  H02M1/36 ,  H02M3/155

Abstract: Reliability of a buck power stage may be enhanced by extending the maximum input voltage able to be withstood in the disabled (non-switching) state. During device qualification/testing, a power management unit (PMU) in the disabled state may have its input node subjected to greater than a maximum input voltage permitted for reliability (Vmax). Under such conditions, a force voltage (Vforce) may be selectively applied to the PMU switching node in the disabled state. For a given input voltage (VIN), this reduces voltage across the non-switching transistors of the power stage (and hence the resulting stress) to below Vmax. In certain embodiments, the Vforce applied to the switching node is of a fixed magnitude. In other embodiments, the Vforce applied to the switching node is of a magnitude varying with input voltage. Embodiments may be particularly suited to implement power management for a System-On-Chip (SoC).

Abstract translation: 降低功率级的可靠性可以通过延长能够在禁用（非切换）状态下承受的最大输入电压来增强。 在设备鉴定/测试期间，处于禁用状态的电源管理单元（PMU）可能使其输入节点受到大于允许可靠性（Vmax）的最大输入电压。 在这种条件下，可以在禁用状态下，将有效电压（Vforce）选择性地施加到PMU交换节点。 对于给定的输入电压（VIN），这会将功率级的非开关晶体管（因此产生的应力）的电压降低到Vmax以下。 在某些实施例中，施加到交换节点的Vforce具有固定的大小。 在其他实施例中，施加到开关节点的Vforce的大小随输入电压而变化。 实施例可以特别适于实现片上系统（SoC）的功率管理。

公开(公告)号：US20140301259A1

公开(公告)日：2014-10-09

申请号：US13954035

申请日：2013-07-30

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Joseph Duncan ,  Xiaoru Zhang ,  MeeLan Lee ,  Arunkumar Jayaraman ,  Derrick Chu Lin ,  Srenik Mehta

IPC: H04W52/02

CPC classification number: H04W52/0229 ,  G06F1/3206 ,  G06F1/324 ,  G06F1/3296 ,  H04W52/0216 ,  H04W52/029 ,  Y02D10/126 ,  Y02D10/172 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/24

Abstract: Methods and apparatuses are described in which dynamic voltage and frequency scaling may be used to save power when processing packets in a wireless communications device. In some cases, inframe detection may allow the device to determine whether to transition from a first (e.g., lower) voltage level to a second (e.g., higher) voltage level to process one or more packets of a received frame. For some packet types the first voltage level may be maintained. In other cases, the device may determine a bandwidth to use from among multiple bandwidths supported by the device. The bandwidth may be determined based on channel conditions. A voltage level may be identified that corresponds to the determined bandwidth and a processing voltage may be scaled to the identified voltage level. The device may be configured to operate in wireless local area network (WLAN) and/or in a cellular network (e.g., LTE).

Abstract translation: 描述了在无线通信设备中处理分组时可以使用动态电压和频率缩放来节省功率的方法和装置。 在一些情况下，帧内检测可以允许设备确定是否从第一（例如，较低）电压电平转换到第二（例如较高）电压电平以处理接收帧的一个或多个分组。 对于一些分组类型，可以维持第一电压电平。 在其他情况下，设备可以从设备支持的多个带宽中确定要使用的带宽。 可以基于信道条件来确定带宽。 可以识别对应于所确定的带宽的电压电平，并且可以将处理电压缩放到所识别的电压电平。 该设备可以被配置为在无线局域网（WLAN）和/或蜂窝网络（例如，LTE）中操作。

公开(公告)号：US11515786B2

公开(公告)日：2022-11-29

申请号：US16553759

申请日：2019-08-28

Applicant: QUALCOMM Incorporated

Inventor： Linfei Guo ,  Chengwu Tao ,  Joseph Duncan ,  Xiaocheng Jing ,  Amir Parayandeh ,  Xun Liu

IPC: H02M3/156 ,  H02M1/00

Abstract: Aspects of the present disclosure generally relate to methods and apparatus for continuous current sensing for a single-inductor multiple-output (SIMO) regulator. One example method includes operating a plurality of switches of the SIMO regulator, via a plurality of control signals, according to a plurality of switching states using a switching controller, sensing currents associated with at least a portion of the plurality of switches of the SIMO regulator using a plurality of current sense circuits, and selectively outputting a sense current from one of the plurality of current sense circuits based on a change in the plurality of controls signals occurring between a transition from a first switching state to a second switching state of the plurality of switching states.

公开(公告)号：US10340854B2

公开(公告)日：2019-07-02

申请号：US15643124

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Zhiqing Zhang ,  Chi Fan Yung ,  Joseph Duncan ,  Jun Hua ,  Song Shi ,  Thomas Marra

IPC: H03F1/30 ,  H03F1/02 ,  H02M3/155 ,  H03F3/195 ,  H03F3/213

Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating an envelope tracking power supply voltage. For example, certain aspects of the present disclosure provide an envelope tracking power supply having a linear amplifier having an output coupled to a power supply node of an amplifier, wherein a power supply node of the linear amplifier is coupled to a first voltage supply node. The envelope tracking power supply may also include a switch mode power supply having an output coupled to the power supply node of the amplifier. Certain aspects also include a circuit having a first switch coupled to the first voltage supply node and a second switch coupled to a second voltage supply node, wherein a power supply node of the switch mode power supply is coupled to the first switch and the second switch.

公开(公告)号：US10128798B2

公开(公告)日：2018-11-13

申请号：US15643242

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Joseph Duncan ,  Thomas Marra ,  Song Shi ,  Iulian Mirea

IPC: H01Q11/12 ,  H03F1/02 ,  H03F1/26 ,  H03F3/195 ,  H03F3/213 ,  H04B1/04

Abstract: Certain aspects of the present disclosure provide methods and apparatus for operating an envelope tracking power supply. The method may include receiving, from a modem of a device, information indicative of a transmit waveform statistic of a signal to be wirelessly transmitted by the device. The method may further include adjusting a configuration of the envelope tracking power supply based on the transmit waveform statistic of the signal.

公开(公告)号：US20140253074A1

公开(公告)日：2014-09-11

申请号：US13787334

申请日：2013-03-06

Applicant: QUALCOMM INCORPORATED

Inventor： Charles Derrick Tuten ,  Joseph Duncan ,  Marko H. Koski

IPC: G05F1/46

CPC classification number: H02M3/156

Abstract: Exemplary embodiments are related to generating an error correction voltage and/or a compensation voltage based upon pulse-width modulation information. A device may include a pulse-width modulator configured to receive a first input voltage and convey a modulated output voltage. The device may also include a filtering unit including at least one filter configured to receive the modulated output voltage, generate at least one of an error correction voltage and a compensation voltage, and convey a second input voltage to the pulse-width modulator based on at least one of the error correction voltage and a compensation voltage.

Abstract translation: 示例性实施例涉及基于脉冲宽度调制信息产生纠错电压和/或补偿电压。 器件可以包括被配置为接收第一输入电压并传送调制输出电压的脉冲宽度调制器。 该装置还可以包括滤波单元，该滤波单元包括配置成接收调制输出电压的至少一个滤波器，产生误差校正电压和补偿电压中的至少一个，并且基于以下步骤将第二输入电压传送到脉宽调制器 至少一个纠错电压和补偿电压。

公开(公告)号：US20230089910A1

公开(公告)日：2023-03-23

申请号：US17448475

申请日：2021-09-22

Applicant: Qualcomm Incorporated

Inventor： Joseph Duncan ,  Chengwu Tao ,  Joseph Dale Rutkowski

IPC: H02M3/158 ,  H02M1/00

Abstract: An apparatus is disclosed for a switch-mode power supply with a network of flying capacitors and switches. In an example aspect, the apparatus includes a switch-mode power supply with an inductor, a switching circuit, and a network of flying capacitors and switches. The switching circuit is coupled to the inductor. The network of flying capacitors and switches is coupled to the switching circuit and includes at least two flying capacitors and multiple switches. The multiple switches are configured to selectively connect the at least two flying capacitors in parallel between a first terminal of the network of flying capacitors and switches and a second terminal of the network of flying capacitors and switches or connect the at least two flying capacitors in series between the first terminal and the second terminal.

公开(公告)号：US10831220B2

公开(公告)日：2020-11-10

申请号：US15938896

申请日：2018-03-28

Applicant: QUALCOMM Incorporated

Inventor： Chris Rosolowski ,  Todd Sutton ,  Orlando Santiago ,  Joseph Duncan

IPC: G05F1/575 ,  H02M1/00

Abstract: A voltage regulator circuit using precharge voltage rails is generally disclosed. For example, the voltage regulator circuit may include a first voltage regulator having a voltage output, an output capacitor coupled to the voltage output, and one or more precharge voltage circuits configured to selectively couple to the voltage output, each of the one or more precharge voltage circuits comprising a capacitor coupled between an output of a precharge voltage regulator and a reference potential.

公开(公告)号：US10749477B2

公开(公告)日：2020-08-18

申请号：US16576146

申请日：2019-09-19

Applicant: QUALCOMM Incorporated

Inventor： Joseph Duncan ,  Ngai Yeung Ho ,  Kevin Lee Cobley

IPC: H04B1/16 ,  H03F1/02 ,  H03F3/24 ,  H04B1/04

Abstract: Certain aspects of the present disclosure provide methods and apparatus for series voltage regulation in an envelope tracking modulated supply. One example of an envelope tracking modulated supply includes a switched-mode power supply (SMPS), a voltage regulator, and a power amplifier having a supply input coupled to an output of the first voltage regulator. In certain aspects, the first voltage regulator is coupled in series between the power amplifier and two or more outputs the SMPS and is configured to generate a voltage at the output of the first voltage regulator based on an envelope of a signal to be amplified by the first power amplifier.