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    PHASE INTERLEAVING IN A MULTIPHASE POWER CONVERTER
    1.
    发明公开
    PHASE INTERLEAVING IN A MULTIPHASE POWER CONVERTER 审中-公开

    公开(公告)号：US20230188044A1

    公开(公告)日：2023-06-15

    申请号：US18061591

    申请日：2022-12-05

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Jason W. LAWRENCE ,  Graeme G. MACKAY

    IPC: H02M3/158 ,  H02M1/14

    CPC classification number: H02M3/1586 ,  H02M1/14

    Abstract: A system for generating a plurality of switch control signals of a multiphase power converter may include a plurality of inputs, each input of the plurality of inputs configured to receive a respective control signal for controlling a respective phase of the multiphase power converter, and a plurality of control paths comprising a control path for each respective control signal, each control path configured to, for its respective control signal, control a switching period of the respective control signal for such control path based on a measure of alignment among the respective control signal for such control path and the other respective control signals of the other control paths.

    USE OF SHARED FEEDBACK AMONG TWO OR MORE REACTIVE SCHEMES
    3.
    发明申请
    USE OF SHARED FEEDBACK AMONG TWO OR MORE REACTIVE SCHEMES 有权

    公开(公告)号：US20230037944A1

    公开(公告)日：2023-02-09

    申请号：US17968393

    申请日：2022-10-18

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Ajit SHARMA ,  Jason W. LAWRENCE ,  Graeme G. MACKAY

    IPC: H02M1/32

    Abstract: A power delivery system may include a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter and control circuitry configured to control the power converter in accordance with a control variable. The control circuitry may include a first control mechanism configured to generate a first intermediate control variable based on a first physical quantity associated with the power delivery system, a second control mechanism configured to generate a second intermediate control variable based on a second physical quantity associated with the power delivery system, a selector configured to select the control variable from the first intermediate control variable and the second intermediate control variable, and a shared feedback memory element configured to feed back the control variable to inputs of the first control mechanism and the second control mechanism, such that the first control mechanism generates the first intermediate control variable based on the first physical quantity and the control variable, and the second control mechanism generates the second intermediate control variable based on the second physical quantity and the control variable.

    MAINTAINING OPERATION WITHIN A STABLE REGION OF A POWER CURVE OF A POWER CONVERTER
    4.
    发明申请
    MAINTAINING OPERATION WITHIN A STABLE REGION OF A POWER CURVE OF A POWER CONVERTER 有权

    公开(公告)号：US20220037908A1

    公开(公告)日：2022-02-03

    申请号：US17130443

    申请日：2020-12-22

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Graeme G. MACKAY ,  Ajit SHARMA ,  Jason W. LAWRENCE ,  Lingli ZHANG

    IPC: H02J7/00 ,  H02M3/04

    Abstract: A power delivery system may include a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter and control circuitry configured to monitor a first voltage derived from the power source, wherein the first voltage is indicative of a total power demanded by the power converter, and control a limit for a current supplied from the power source to the one or more loads based on comparison of the first voltage to a threshold voltage, wherein the threshold voltage is indicative of a point within a range of operation of the power converter at which the power converter delivers a maximum amount of power to the one or more loads.

    RANDOMIZATION OF CURRENT IN A POWER CONVERTER
    7.
    发明申请
    RANDOMIZATION OF CURRENT IN A POWER CONVERTER 有权

    公开(公告)号：US20210367513A1

    公开(公告)日：2021-11-25

    申请号：US17119497

    申请日：2020-12-11

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Graeme G. MACKAY ,  Jason W. LAWRENCE

    IPC: H02M3/157 ,  H02M3/158

    Abstract: A method of randomizing inductor current in at least one of a plurality of parallel coupled peak valley current-controlled power converters may include comparing the inductor current to a threshold to generate a comparison signal, delaying the comparison signal by a plurality of delay amounts to generate a plurality of delayed versions of the comparison signal, and randomly selecting one of the plurality of delayed versions of the comparison signal for controlling the inductor current during one or both of a charging state and a transfer state of the at least one of the plurality of parallel coupled peak/valley current-controlled power converters.

    CURRENT CONTROL FOR A BOOST CONVERTER WITH DUAL ANTI-WOUND INDUCTOR
    9.
    发明申请
    CURRENT CONTROL FOR A BOOST CONVERTER WITH DUAL ANTI-WOUND INDUCTOR 有权

    公开(公告)号：US20220069702A1

    公开(公告)日：2022-03-03

    申请号：US17525463

    申请日：2021-11-12

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Jason W. LAWRENCE ,  John L. MELANSON ,  Eric J. KING

    IPC: H02M3/155

    Abstract: A system may include a power converter comprising at least one stage having a dual anti-wound inductor having a first winding and a second winding constructed such that its windings generate opposing magnetic fields in its magnetic core and constructed such that a coupling coefficient between the first winding and the second winding is less than approximately 0.95 and a current control subsystem for controlling an electrical current through the dual anti-wound inductor, the current control subsystem configured to minimize a magnitude of a magnetizing electrical current of the dual anti-wound inductor to prevent core saturation of the dual anti-wound inductor and regulate an amount of output electrical current delivered by the power converter to the load in accordance with a reference input signal.

    DUAL-LEVEL DETECTION TO REDUCE VOLTAGE DROOP ON CRITICAL BATTERY VOLTAGE NODES
    10.
    发明申请
    DUAL-LEVEL DETECTION TO REDUCE VOLTAGE DROOP ON CRITICAL BATTERY VOLTAGE NODES 有权

    公开(公告)号：US20220035389A1

    公开(公告)日：2022-02-03

    申请号：US17171782

    申请日：2021-02-09

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Graeme G. MACKAY ,  Ajit SHARMA ,  Jason W. LAWRENCE ,  Qiang LI

    IPC: G05F1/46 ,  H02J7/00

    Abstract: A power delivery system may include a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter and control circuitry configured to determine whether a voltage node in the power delivery system has fallen below a warning threshold voltage, determine whether the voltage node has fallen below a critical threshold voltage, wherein the critical threshold voltage is lesser than the warning threshold voltage, in response to a voltage of the voltage node falling below the warning threshold voltage, decrease a maximum current drawn by the power converter from a first current level to a second current level, and in response to a voltage of the voltage node falling below the critical threshold voltage, decrease a maximum current drawn by the power converter from the second current level to a third current level.

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