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公开(公告)号：US11005368B2
公开(公告)日：2021-05-11
申请号：US16573825
申请日：2019-09-17
Applicant: QUALCOMM Incorporated
Inventor： Mukesh Bansal , Pengfei Li , Moataz Abdelsamie Abdelfattah , Iulian Mirea , Song Shi
Abstract: A method for unbalancing a tri-level switching regulator uses hysteretic control when switching across multiple states of the tri-level switching regulator. The method includes determining a battery voltage and an output voltage of the tri-level switching regulator. The method also includes dynamically adjusting at least one of a first hysteretic window of a first hysteretic comparator associated with a second switching state of the tri-level switching regulator and a second hysteretic window of a second hysteretic comparator associated with a first switching state of the tri-level switching regulator based on the battery voltage and the output voltage.
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公开(公告)号：US10951170B2
公开(公告)日：2021-03-16
申请号：US16353632
申请日：2019-03-14
Applicant: QUALCOMM Incorporated
Inventor： Michael McGowan , Iulian Mirea
Abstract: A power amplifier (PA) circuit includes a circuit for generating a supply voltage at an upper voltage rail for a power amplifier (PA). The circuit includes a DC-to-DC converter for generating a voltage from which the supply voltage is generated; a linear amplifier for sourcing or sinking current to or from the upper voltage rail via a capacitor for performing fine adjustment of the supply voltage; a first switching device coupled between an output of the linear amplifier and a lower voltage rail to selectively assist the linear amplifier sink current through the capacitor to deal with actual or anticipated transient response of the supply voltage; and a second switching device coupled between the upper voltage rail and the lower voltage rail to selectively discharge the capacitor in response to actual or anticipated transient response of the supply voltage.
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公开(公告)号：US20200328677A1
公开(公告)日：2020-10-15
申请号：US16384446
申请日：2019-04-15
Applicant: Qualcomm Incorporated
Inventor： Sally Amin , Lin Xue , Iulian Mirea , Song Shi
IPC: H02M3/155
Abstract: An apparatus is disclosed for a single-inductor multiple-output (SIMO) power converter with a cross-regulation switch. An example apparatus includes a power source and a SIMO power converter. The SIMO power converter includes an input node coupled to the power source, a first node, a second node, a ground node, and an inductor coupled between the first node and the second node. The single-inductor multiple-output power converter also includes a first switch coupled between the input node and the first node, a second switch coupled between the first node and the ground node, and a cross-regulation switch coupled between the input node and the second node.
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公开(公告)号：US11916026B2
公开(公告)日：2024-02-27
申请号：US16535012
申请日：2019-08-07
Applicant: QUALCOMM Incorporated
Inventor： Jongshick Ahn , Iulian Mirea , Chung-Ti Hsu
IPC: H01L23/64
CPC classification number: H01L23/642
Abstract: In certain aspects, a clamp includes first and second transistors coupled in series between a power bus and a ground. The clamp also includes a resistive voltage divider configured to bias a gate of the first transistor and a gate of the second transistor based on a supply voltage on the power bus. The clamp further includes a capacitive voltage divider configured to turn on the first and second transistors in response to a voltage transient on the power bus exceeding a trigger threshold voltage.
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公开(公告)号：US10978947B2
公开(公告)日：2021-04-13
申请号：US16384446
申请日：2019-04-15
Applicant: Qualcomm Incorporated
Inventor： Sally Amin , Lin Xue , Iulian Mirea , Song Shi
Abstract: An apparatus is disclosed for a single-inductor multiple-output (SIMO) power converter with a cross-regulation switch. An example apparatus includes a power source and a SIMO power converter. The SIMO power converter includes an input node coupled to the power source, a first node, a second node, a ground node, and an inductor coupled between the first node and the second node. The single-inductor multiple-output power converter also includes a first switch coupled between the input node and the first node, a second switch coupled between the first node and the ground node, and a cross-regulation switch coupled between the input node and the second node.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10819233B2
公开(公告)日：2020-10-27
申请号：US16246107
申请日：2019-01-11
Applicant: QUALCOMM Incorporated
Inventor： Lin Xue , Iulian Mirea , Xiaocheng Jing , Jongshick Ahn , Amir Parayandeh , Linfei Guo
Abstract: A power converter includes a voltage source for generating an input voltage, and a regulation circuit for generating a set of output voltages based on the input voltage. The regulation circuit regulates the set of output voltages in different manners based on whether the set of output voltages is greater or less than a set of corresponding reference voltages, respectively. If one or more output voltages are less than one or more of the corresponding reference voltages, the regulation circuit regulates only those one or more output voltages during a current regulation interval based on an error voltage related to one or more differences between the one or more output voltages and the corresponding one or more reference voltages, respectively. If all output voltages are greater than the corresponding reference voltages, the regulation circuit regulates only the output voltage associated with the largest load current during the current regulation interval.
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公开(公告)号：US09496873B2
公开(公告)日：2016-11-15
申请号：US14451079
申请日：2014-08-04
Applicant: QUALCOMM Incorporated
Inventor： Shengyuan Li , Iulian Mirea
IPC: H03K19/094 , H03K19/0185 , H03K3/356 , H03K5/24 , H03K19/017
CPC classification number: H03K19/0185 , H03K3/35613 , H03K5/2481 , H03K19/01721 , H03K19/018514
Abstract: In one embodiment, a method for increasing speed of a differential input pair. The method comprises applying a first boost current to a first input of the differential input pair during a transition of a first signal applied to the first input; storing the first boost current; ending the application of the first boost current in response to the stored first boost current exceeding a first threshold; applying a second boost current to a second input of the differential input pair during a transition of a second signal applied to the second input; storing the second boost current; and ending the application of the second boost current in response to the stored second boost current exceeding a second threshold.
Abstract translation: 在一个实施例中，一种用于增加差分输入对的速度的方法。 该方法包括：在施加到第一输入端的第一信号的转变期间，将第一升压电流施加到差分输入对的第一输入; 存储第一升压电流; 响应于所存储的第一升压电流超过第一阈值，结束施加第一升压电流; 在施加到所述第二输入的第二信号的转变期间，将第二升压电流施加到所述差分输入对的第二输入; 存储第二升压电流; 以及响应于所存储的超过第二阈值的第二升压电流而结束施加第二升压电流。
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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
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.
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公开(公告)号：US09923520B1
公开(公告)日：2018-03-20
申请号：US15272139
申请日：2016-09-21
Applicant: QUALCOMM Incorporated
Inventor： Moataz Abdelsamie Abdelfattah , Iulian Mirea , Song Shi
CPC classification number: H03F1/0222 , H02M1/08 , H02M3/155 , H03F1/0227 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/105 , H03F2200/294 , H03F2200/432 , H03F2200/451 , H03F2200/462 , H03F2200/78
Abstract: The present disclosure describes a synchronized switching power supply for a radio frequency (RF) power amplifier. In some aspects, a synchronized power supply circuit comprises a first switch connected between a power rail and a first terminal of an inductor that is connected to an output of the circuit via its second terminal. The circuit also includes a second switch connected between a ground rail and the first terminal of the inductor, and respective gate drivers for the first and second switches. An amplifier of the circuit is connected to the power rail and has an output connected to the output of the circuit. A current sensor is connected between the output of the amplifier and the output of the circuit, with an output of the current sensor being connected to an input of a comparator. A delay circuit is connected between an output of the comparator and the first and second gate drivers, and may synchronize the power supply circuit.
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公开(公告)号：US09755518B2
公开(公告)日：2017-09-05
申请号：US15179229
申请日：2016-06-10
Applicant: QUALCOMM Incorporated
Inventor： Mukesh Bansal , Michael McGowan , Iulian Mirea , Qadeer Khan , Troy Stockstad , Brett Walker , Todd Sutton
CPC classification number: H02M3/158 , G01R19/25 , H02M1/08 , H02M2001/0009
Abstract: Features and advantages of the present disclosure include a switching regulator and current measurement circuit. In one embodiment, a switching transistor in the switching regulator has a first voltage on a first terminal and a switching voltage on a second terminal. A current measurement circuit has first and second input terminals. A first switch couples the second terminal of the switching transistor to the first terminal of the current measurement circuit when the switching transistor is on, where the second input terminal of the current measurement circuit is coupled to the first terminal of the switching transistor and measurement(s) may be taken. When the switching transistor is off, the first and second input terminals of the current measurement circuit are coupled together, and measurements emulate zero current through the switching transistor.
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