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    Circuitry for charging a multi-stack battery pack
    1.
    发明授权
    Circuitry for charging a multi-stack battery pack 有权

    公开(公告)号：US10749218B2

    公开(公告)日：2020-08-18

    申请号：US16169105

    申请日：2018-10-24

    Applicant: QUALCOMM Incorporated

    Inventor： Steve Hawley ,  Giuseppe Pinto

    IPC: H01M10/44 ,  H01M10/46 ,  H02J7/00 ,  H02M3/158 ,  H02M3/07 ,  G01R31/36 ,  G01R19/165 ,  H02M3/156 ,  H02M1/00

    Abstract: Certain aspects of the present disclosure provide apparatus and techniques for charging a multi-stack battery pack. For example, certain aspects provide a circuit for charging a battery pack having multiple battery cells. The circuit generally includes a voltage regulator circuit and charge pump circuitry having an input coupled to an output of the voltage regulator circuit, and an output coupled to a first battery charging terminal. In certain aspects, the first battery charging terminal may be configured to be coupled to a terminal of a first battery cell of the multiple battery of the battery pack.

    BUCK REGULATOR WITH CURRENT CANCELLATION
    5.
    发明申请
    BUCK REGULATOR WITH CURRENT CANCELLATION 审中-公开
    带有电流消除的调压器

    公开(公告)号：US20170019017A1

    公开(公告)日：2017-01-19

    申请号：US14802573

    申请日：2015-07-17

    Applicant: QUALCOMM Incorporated

    Inventor： Steve Hawley

    IPC: H02M1/14

    CPC classification number: H02M3/158 ,  H02M1/143

    Abstract: A method and apparatus for cancelling ripple voltage from an output voltage. A first voltage is input to a converter, which may be a buck converter, a boost converter, or a buck/boost converter. The converter converts the first or input voltage and produces a first output voltage that containing a first ripple voltage. A second voltage is input to an inverting converter and is adjusted. This second voltage contains a second output ripple voltage that is equal and opposite to the first ripple voltage. The first and second voltages are filtered and summed The summing cancels the output ripple voltage and delivers a cleaner voltage. The apparatus includes: a converter connected to a power source, an inverting converter connected to the power source, at least one filter connected to the converter; at least one filter connected to the inverting converter; a blocking capacitor connected to a summer; and a load.

    Abstract translation: 一种用于从输出电压消除纹波电压的方法和装置。 第一电压被输入到转换器，转换器可以是降压转换器，升压转换器或降压/升压转换器。 转换器转换第一或输入电压并产生包含第一纹波电压的第一输出电压。 第二电压被输入到反相转换器并被调节。 该第二电压包含与第一纹波电压相等和相反的第二输出纹波电压。 第一和第二电压被滤波和求和求和除去输出纹波电压并提供更清洁的电压。 该装置包括：连接到电源的转换器，连接到电源的反相转换器，连接到转换器的至少一个滤波器; 连接到反相转换器的至少一个滤波器; 连接到夏天的阻塞电容器; 和一个负载。

    Lossless average input and output current sensing in a switched-mode power supply
    6.
    发明授权
    Lossless average input and output current sensing in a switched-mode power supply 有权

    公开(公告)号：US10756614B2

    公开(公告)日：2020-08-25

    申请号：US16004536

    申请日：2018-06-11

    Applicant: QUALCOMM Incorporated

    Inventor： Stuart Pullen ,  Michael Bui ,  Steve Hawley ,  Chunping Song

    IPC: H02M1/00 ,  H02M3/158 ,  G01R31/40 ,  G01R19/00 ,  G11C27/02

    Abstract: Methods and apparatus for current sensing and error correction in a switched-mode power supply composed of a high-side transistor coupled to a low-side transistor are described. One example method generally includes capturing a current associated with the low-side transistor at a first time corresponding to the low-side transistor turning off; capturing a current associated with the high-side transistor at a second time corresponding to a first delay after the high-side transistor turns on; capturing the current associated with the high-side transistor at a third time corresponding to the high-side transistor turning off; and applying a first correction current to a current-summing node of the current-sensing circuit for a first interval based on the first delay, wherein the first correction current is based on the captured current associated with the low-side transistor at the first time and on the captured current associated with the high-side transistor at the second time.

    Systems and methods for charging a battery
    7.
    发明授权
    Systems and methods for charging a battery 有权

    公开(公告)号：US10432008B2

    公开(公告)日：2019-10-01

    申请号：US15688684

    申请日：2017-08-28

    Applicant: QUALCOMM Incorporated

    Inventor： Christian Sporck ,  VaraPrasad Arikatla ,  Shadi Hawawini ,  Steve Hawley ,  Thomas O'Brien ,  Seema Kumar ,  Aaron Melgar

    IPC: H02J7/00 ,  H02J7/02 ,  H02M3/156 ,  H02J7/04

    Abstract: The present disclosure includes a method of charging a battery. In one embodiment, the method comprises receiving, in a battery charging circuit on an electronic device, an input voltage having a first voltage value from an external power source. The battery charger is configured to produce a charge current having a first current value into the battery. The input current limit and/or duty cycle of the charger is monitored. Control signals may be generated to increase the first voltage value of the input voltage if either (i) the input current limit is activated or (ii) the duty cycle reaches a maximum duty cycle. The charger also receives signals indicating a temperature inside the electronic device and generates control signals to decrease the value of the input voltage when the temperature increases above a threshold temperature.

    Dual-phase operation for concurrently charging a battery and powering a peripheral device
    8.
    发明授权
    Dual-phase operation for concurrently charging a battery and powering a peripheral device 有权

    公开(公告)号：US10326296B2

    公开(公告)日：2019-06-18

    申请号：US15273517

    申请日：2016-09-22

    Applicant: QUALCOMM Incorporated

    Inventor： Stuart Pullen ,  Steve Hawley ,  Thomas O'Brien

    IPC: H02J7/00 ,  G06F1/26 ,  H02M3/158 ,  H02J1/10 ,  H02J7/02

    Abstract: A multi-phase (e.g., dual-phase) concurrent configuration of a power management component supports higher current levels to peripheral devices while maintaining acceptable thermal limits. A dual-phase integrated circuit (IC) having a first input/output (I/O) port coupled to a battery and a second I/O port coupled to an adapter and a peripheral device implements the configuration. The dual phase IC includes a dual-phase voltage regulator that selectively provide power (i) from the first I/O port to the second I/O port to provide power to the peripheral device or (ii) from the second I/O port to the first I/O port to provide power to the battery. A controller activates a boost phase to power the second I/O port in response to detecting a demand current of the peripheral device exceeds a maximum current available from the adapter.

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