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公开(公告)号：US20210376622A1
公开(公告)日：2021-12-02
申请号：US17336075
申请日：2021-06-01
Applicant: QUALCOMM Incorporated
Inventor： Guoyong GUO , Cheong KUN , Chunping SONG
Abstract: Methods and apparatus for trickle charging and precharging a dead multi-cell-in-series battery. One example battery charging circuit generally includes a charge pump circuit comprising a plurality of switches, being coupled to first and second power supply nodes, and being configured to multiply (or divide) a first voltage at the first power supply node to generate a second voltage at the second power supply node; a driver circuit configured to drive the plurality of switches in the charge pump circuit; and an arbiter having a first input coupled to the first power supply node, a second input coupled to the second power supply node, a third input coupled to a third power supply node having a third voltage, and an output coupled to a power supply terminal of the driver circuit, the arbiter being configured to select between the first, second, and third voltages to power the driver circuit.
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公开(公告)号：US20190115829A1
公开(公告)日：2019-04-18
申请号：US16001073
申请日：2018-06-06
Applicant: QUALCOMM Incorporated
Inventor： Hector Ivan OPORTA , Zhaohui ZHU , Chunping SONG , William RADER
Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for powering up a charge pump converter and providing protection and soft-start circuitry therefor. One example charge pump converter generally includes a first transistor and a second transistor coupled in series between an input voltage node and an output voltage node of the charge pump converter, a first capacitive element having a first terminal coupled to a node between the first and second transistors, and a first switch coupled to the input voltage node, the first switch being configured to selectively enable a first drive circuit having an output coupled to a control terminal of the second transistor.
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公开(公告)号：US20240258819A1
公开(公告)日：2024-08-01
申请号：US18431763
申请日：2024-02-02
Applicant: Qualcomm Incorporated
Inventor： Chunping SONG , Cheong KUN , Xiaolin GAO , Sanghwa JUNG , Yue JING
CPC classification number: H02J7/007192 , H02J7/02 , H02J2207/20
Abstract: An apparatus is disclosed for adaptive multi-mode charging. In an example aspect, the apparatus includes at least one charger having a first node and a second node. The at least one charger is configured to accept an input voltage at the first node. The at least one charger is also configured to selectively operate in a first mode to generate a first output voltage at the second node that is greater than or less than the input voltage or operate in a second mode to generate a second output voltage at the second node that is substantially equal to the input voltage.
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公开(公告)号：US20210083572A1
公开(公告)日：2021-03-18
申请号：US17021591
申请日：2020-09-15
Applicant: QUALCOMM Incorporated
Inventor： Ta-Tung YEN , Guoyong GUO , Chunping SONG , Hector Ivan OPORTA
Abstract: Techniques and apparatus for controlling gate drivers of a switched-mode power supply (SMPS) circuit—such as a three-level buck converter, a divide-by-two charge pump, or an adaptive combination power supply circuit capable of switching therebetween—in a power-saving mode (e.g., a pulse-skipping mode). During such a power-saving mode in which a capacitor of a charge pump is disconnected from at least one power supply rail (e.g., first and second input nodes of the charge pump) and is coupled to power terminals of one or more drivers of the SMPS circuit, the capacitor is temporarily disconnected from the power terminals and temporarily coupled to the at least one power supply rail (e.g., for a few microseconds).
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公开(公告)号：US20210067041A1
公开(公告)日：2021-03-04
申请号：US16894491
申请日：2020-06-05
Applicant: QUALCOMM Incorporated
Inventor： Kunhee CHO , Sanghwa JUNG , Zhaohui ZHU , Chunping SONG
IPC: H02M3/158
Abstract: An apparatus for generating an output voltage across a load. The apparatus includes a first switching device; a second switching device coupled in series with the first switching device between an upper voltage rail and a lower voltage rail, wherein the upper voltage rail is configured to receive an input voltage; an inductor between a node between the first and second switching device and the load; a sensor configured to generate a control signal related to a current through the inductor; and a controller configured to operate the first and second switching devices to generate the output voltage based on the control signal.
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Patent Agency Ranking
公开(公告)号：US20250088100A1
公开(公告)日：2025-03-13
申请号：US18465757
申请日：2023-09-12
Applicant: QUALCOMM Incorporated
Inventor： Sanghwa JUNG , Ahmed ABDELMOATY , Chunping SONG
Abstract: Certain aspects of the present disclosure generally relate to a hybrid voltage divider and buck converter circuit. For example, certain aspects provide a power supply circuit, including: a first charge pump coupled between an input voltage (VIN) node of the power supply circuit and a charge pump output node of the power supply circuit, an inductive element having a first terminal coupled to the charge pump output node and a second terminal coupled to an output voltage (VOUT) node of the power supply circuit, and an output capacitive element coupled to the VOUT node of the power supply circuit.
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公开(公告)号：US20240055992A1
公开(公告)日：2024-02-15
申请号：US18489639
申请日：2023-10-18
Applicant: QUALCOMM Incorporated
Inventor： Sanghwa JUNG , Chunping SONG , Ta-Tung YEN , Yue JING
CPC classification number: H02M3/1582 , H02M3/07
Abstract: A three-level buck converter circuit configurable to transition between a three-level buck converter mode and a two-level buck converter mode and methods for regulating power using such a circuit. One example power supply circuit generally includes a three-level buck converter circuit and a control circuit coupled to the three-level buck converter circuit and configured to control operation of the three-level buck converter circuit between a three-level buck converter mode and a two-level buck converter mode. The three-level buck converter circuit generally includes a first switch, a second switch coupled to the first switch via a first node, a third switch coupled to the second switch via a second node, a fourth switch coupled to the third switch via a third node, a first capacitive element coupled between the first node and the third node, and an inductive element coupled between the second node and an output node.
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公开(公告)号：US20200014294A1
公开(公告)日：2020-01-09
申请号：US16371851
申请日：2019-04-01
Applicant: QUALCOMM Incorporated
Inventor： Chunping SONG , Ye Ming LI , Guoyong GUO
Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for providing surge protection for a switched-mode power supply (SMPS), such as a SMPS used in a battery-charging circuit. One example surge protection circuit generally includes an input node; an output node; a reference potential node; a transistor coupled between the input node and the output node; a diode device having an anode coupled to the input node and a cathode coupled to a control node of the transistor; a voltage-clamping circuit coupled between the output node and the control node; and a first switch coupled between the control node of the transistor and the reference potential node.
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9.发明申请公开(公告)号：US20180331564A1
公开(公告)日：2018-11-15
申请号：US15712770
申请日：2017-09-22
Applicant: QUALCOMM Incorporated
Inventor： Chunping SONG , Jialei XU , Stuart PULLEN , Steve HAWLEY , Neal HOROVITZ , Shashank Prakash MANE
CPC classification number: H02J7/163 , G01R19/0092 , H02J7/0013 , H02J7/0024 , H02J7/0052 , H02J7/022 , H02J2007/0059 , H02J2007/0062
Abstract: Certain aspects of the present disclosure generally relate to reducing the size of parallel charging circuits for charging a battery in a portable device, while still effectively providing input current sensing and reverse current blocking capabilities. One example battery charging circuit generally includes: (1) a first charging circuit comprising a first charging output connectable to a battery and a first converter to provide power to the first charging output; and (2) a second charging circuit comprising a second charging output connectable to the battery, a second converter to provide power to the second charging output, a first transistor coupled between an output of the second converter and the second charging output, and a current-sensing circuit coupled to the output of the second converter to sense a current through the first transistor.
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10.发明公开公开(公告)号：US20240356437A1
公开(公告)日：2024-10-24
申请号：US18545729
申请日：2023-12-19
Applicant: QUALCOMM Incorporated
Inventor： Georgios Konstantinos PAPARRIZOS , Guoyong GUO , Chunping SONG , Haoyan LI , Jonathan LUTY , Xinying DING
CPC classification number: H02M3/155 , H02J7/007 , H02J2207/20
Abstract: Certain aspects of the present disclosure provide techniques and apparatus for supplying power, including battery charging. One example power supply circuit generally includes a switching regulator including an output node, a first power supply node coupled to the output node of the switching regulator, a first charge pump including a first terminal coupled to the first power supply node and including a second terminal coupled to a second power supply node, a first battery node for coupling to a first battery, and a first switch including a first terminal coupled to the first power supply node and including a second terminal connected to the first battery node.
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