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    Randomization of current in a power converter
    1.
    发明授权
    Randomization of current in a power converter 有权

    公开(公告)号：US11552569B2

    公开(公告)日：2023-01-10

    申请号：US17119497

    申请日：2020-12-11

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Graeme G. Mackay ,  Jason W. Lawrence

    IPC: H02M3/158 ,  H02M1/44 ,  H02M1/00 ,  H02M3/156 ,  H02M3/157 ,  H02M1/15 ,  H02M3/04

    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
    2.
    发明授权
    Current control for a boost converter with dual anti-wound inductor 有权

    公开(公告)号：US11476759B2

    公开(公告)日：2022-10-18

    申请号：US16709036

    申请日：2019-12-10

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Jason W. Lawrence ,  John L. Melanson ,  Eric J. King

    IPC: H02M3/158 ,  H02M1/40 ,  H02M1/00

    Abstract: A system may include a power converter comprising at least one stage having a dual anti-wound inductor constructed such that its windings generate opposing magnetic fields in its magnetic core and a current control subsystem for controlling an electrical current through the dual anti-wound inductor. The current control subsystem may be 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.

    Use of shared feedback among two or more reactive schemes
    5.
    发明授权
    Use of shared feedback among two or more reactive schemes 有权

    公开(公告)号：US11522440B2

    公开(公告)日：2022-12-06

    申请号：US17171815

    申请日：2021-02-09

    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.

    Use of shared feedback among two or more reactive schemes
    7.
    发明授权
    Use of shared feedback among two or more reactive schemes 有权

    公开(公告)号：US11722054B2

    公开(公告)日：2023-08-08

    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

    CPC classification number: 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.

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