-
公开(公告)号：US09820229B2
公开(公告)日：2017-11-14
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
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).
-
公开(公告)号：US20160285454A1
公开(公告)日：2016-09-29
申请号：US14671553
申请日：2015-03-27
Applicant: QUALCOMM Incorporated
Inventor： Vishal Gupta , Chifan Yung , Joseph Duncan
IPC: H03K19/0185
CPC classification number: H03K19/018507 , H03F3/2173 , H03F2203/30015 , H03F2203/30084 , H03F2203/30099 , H03F2203/30117 , H03F2203/30132 , H03K17/102
Abstract: Disclosed is a cascode configuration that moves the gate of the cascode substantially without delay relative to an output node by capacitively coupling the latter onto the cascode gates. The passive coupling eliminates the need for actively driving the gates of the cascode. In some embodiments, the only circuitry needed on the cascode gate may be a biasing circuit that limits the swing on the cascode gate between Vmax and 2×Vmax, where Vmax is a transistor device rating.
Abstract translation: 公开了一种共源共栅结构，其通过将电容耦合到共源共栅电路上而相对于输出节点基本上没有延迟地移动共源共栅的栅极。 无源耦合消除了积极驱动共源共栅的栅极的需要。 在一些实施例中，级联栅极上所需的唯一电路可以是限制Vmax和2×Vmax之间的共源共栅栅极上的摆幅的偏置电路，其中Vmax是晶体管器件额定值。
-
公开(公告)号：US20140253081A1
公开(公告)日：2014-09-11
申请号：US13793766
申请日：2013-03-11
Applicant: QUALCOMM INCORPORATED
Inventor： Joseph Duncan , Charles Derrick Tuten
IPC: G05F1/10
CPC classification number: G05F1/10 , H02M1/32 , H02M3/157 , H02M3/158 , H02M3/1588 , H02M2001/0025 , H02M2001/0035 , Y02B70/1466 , Y02B70/16
Abstract: Exemplary embodiments are related to a switching voltage regulator. A switching voltage regulator may include a current limit detector configured to detect an over-current condition. The switching voltage regulator may further include a pulse-width modulation (PWM) module coupled to the current limit detector and configured to convey a PWM signal based on a programmed switching frequency and an output voltage and in response to the over-current condition.
Abstract translation: 示例性实施例涉及开关电压调节器。 开关电压调节器可以包括被配置为检测过电流状况的电流限制检测器。 开关电压调节器还可以包括与电流限制检测器耦合的脉冲宽度调制（PWM）模块，其被配置为基于编程的开关频率和输出电压以及响应于过电流状态来传送PWM信号。
-
公开(公告)号：US12273029B2
公开(公告)日：2025-04-08
申请号：US17448475
申请日：2021-09-22
Applicant: Qualcomm Incorporated
Inventor： Joseph Duncan , Chengwu Tao , Joseph Dale Rutkowski
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：US10924017B2
公开(公告)日：2021-02-16
申请号：US16440434
申请日：2019-06-13
Applicant: QUALCOMM Incorporated
Inventor： Linfei Guo , Chengwu Tao , Joseph Duncan , Amir Parayandeh , Xiaocheng Jing , Justin Philpott , Lin Xue
Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for operating a switched-mode power supply (SMPS). One example method generally includes selecting a first output of a plurality of outputs of the SMPS based on a power demand associated with each of the plurality of outputs if a voltage at the first output is less than a reference voltage associated with the first output, by selecting as the first output one of the plurality of outputs having the highest power demand, and based on an amount of overcharge associated with the first output if the voltage at the first output is greater than the reference voltage, by selecting as the first output one of the plurality of outputs having the lowest amount of overcharge. The method may also include directing current across an inductive element of the SMPS to the first output based on the selection.
-
Patent Agency Ranking
公开(公告)号：US09647545B2
公开(公告)日：2017-05-09
申请号：US14518617
申请日：2014-10-20
Applicant: QUALCOMM Incorporated
Inventor： Joseph Duncan , Srenik Mehta , Vishal Gupta , Todd Sutton
CPC classification number: H02M3/158 , G05F1/59 , H02M3/157 , H02M2001/0032 , H04W52/0274 , Y02B70/16 , Y02D70/00 , Y02D70/142
Abstract: A low standby power DC-DC converter can be powered down during standby mode. The DC-DC converter can be periodically awakened between sleep cycles to check if the output voltage needs to be recharged (refreshed). The duration of the sleep cycles can be varied to accommodate for changing load conditions that would affect the output voltage.
-
17.发明授权公开(公告)号：US09419518B2
公开(公告)日：2016-08-16
申请号：US13787334
申请日：2013-03-06
Applicant: QUALCOMM Incorporated
Inventor： Charles Derrick Tuten , Joseph Duncan , Marko H Koski
IPC: H02M3/156
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。
-
18.发明授权公开(公告)号：US12107497B2
公开(公告)日：2024-10-01
申请号：US17370689
申请日：2021-07-08
Applicant: QUALCOMM Incorporated
Inventor： Chris Rosolowski , Todd Sutton , Orlando Santiago , Joseph Duncan , Rashed Hoque , Marko Koski , Zdravko Lukic
Abstract: A voltage regulator circuit using predictively precharged voltage rails is generally disclosed. For example, the voltage regulator circuit may include a main switching regulator configured to provide a target voltage, the main switching regulator having a first voltage node, a precharge switching regulator configured to provide a precharge voltage, the precharge switching regulator having a second voltage node, the precharge voltage based on a difference between the target voltage and a next target voltage to be provided by the main switching regulator, and a precharge switch circuit configured to selectively couple the second voltage node to an output voltage node based upon a transition from the target voltage to the next target voltage.
-
19.发明授权公开(公告)号：US11063514B2
公开(公告)日：2021-07-13
申请号：US16553035
申请日：2019-08-27
Applicant: QUALCOMM Incorporated
Inventor： Chris Rosolowski , Todd Sutton , Orlando Santiago , Joseph Duncan , Rashed Hoque , Marko Koski , Zdravko Lukic
Abstract: A voltage regulator circuit using predictively precharged voltage rails is generally disclosed. For example, the voltage regulator circuit may include a main switching regulator configured to provide a target voltage, the main switching regulator having a first voltage node, a precharge switching regulator configured to provide a precharge voltage, the precharge switching regulator having a second voltage node, the precharge voltage based on a difference between the target voltage and a next target voltage to be provided by the main switching regulator, and a precharge switch circuit configured to selectively couple the second voltage node to an output voltage node based upon a transition from the target voltage to the next target voltage.
-
公开(公告)号：US10651799B2
公开(公告)日：2020-05-12
申请号：US16457442
申请日：2019-06-28
Applicant: QUALCOMM Incorporated
Inventor： Zhiqing Zhang , Chi Fan Yung , Joseph Duncan , Jun Hua , Song Shi , Thomas Marra
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.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.014 seconds)
