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    LOW-POWER MODE FOR MULTI-LEVEL CONVERTER
    31.
    发明公开
    LOW-POWER MODE FOR MULTI-LEVEL CONVERTER 审中-公开

    公开(公告)号：US20240250599A1

    公开(公告)日：2024-07-25

    申请号：US18415862

    申请日：2024-01-18

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Hasnain AKRAM ,  Graeme G. MACKAY ,  Eric J. KING

    IPC: H02M1/00 ,  H02M3/158

    CPC classification number: H02M1/0032 ,  H02M1/0025 ,  H02M3/1582

    Abstract: A system may include a control circuit and a multi-level power converter comprising a plurality of switches and a power inductor electrically coupled to the plurality of switches, wherein the power inductor is coupled to a switching node of the multi-level power converter, wherein the multi-level power converter is capable of applying three or more switching voltages to the switching node. The control circuit may generate control signals that define a sequence of switching of the plurality of switches of the power converter, the control circuit configured to, during a switching cycle of the converter in which the power inductor is magnetized and demagnetized, control switching of the plurality of switches among at least three switch configurations during magnetization and demagnetization of the power inductor such that a voltage on the switching node experiences a different respective magnitude of voltage in each of the at least three switch configurations.

    MULTIPHASE INDUCTIVE BOOST CONVERTER WITH MULTIPLE OPERATIONAL PHASES
    32.
    发明申请
    MULTIPHASE INDUCTIVE BOOST CONVERTER WITH MULTIPLE OPERATIONAL PHASES 有权

    公开(公告)号：US20220393576A1

    公开(公告)日：2022-12-08

    申请号：US17892575

    申请日：2022-08-22

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Eric J. KING ,  John L. MELANSON ,  Graeme G. MACKAY ,  Lingli ZHANG

    IPC: H02M3/04 ,  H02J7/00

    Abstract: A battery management system configured to electrically couple to a battery may include a boost converter comprising a plurality of switches arranged to provide a boosted output voltage at an output of the boost converter from a source voltage of the battery and a bypass switch coupled between the battery and the output, wherein the battery management system is operable in a plurality of modes comprising a bypass mode wherein the source voltage is bypassed to the output and when the battery management system is in the bypass mode, at least one switch of the plurality of switches is enabled to increase a conductance between the battery and the output.

    EFFICIENT USE OF ENERGY IN A SWITCHING POWER CONVERTER
    33.
    发明申请
    EFFICIENT USE OF ENERGY IN A SWITCHING POWER CONVERTER 有权

    公开(公告)号：US20220286050A1

    公开(公告)日：2022-09-08

    申请号：US17825775

    申请日：2022-05-26

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Eric J. KING ,  Ajit SHARMA ,  Lingli ZHANG ,  Christian LARSEN ,  Graeme G. MACKAY

    IPC: H02M3/158 ,  H02M1/08

    Abstract: A system may include a power converter having a maximum allowable input power drawn from a power source, an energy storage element coupled to an output of the power converter at a top plate of the energy storage element, wherein the energy storage element is configured to store excess energy, and control circuity configured to, when an input power of the power converter exceeds the maximum allowable input power, cause excess energy stored in the energy storage element to be consumed by circuitry coupled to the output of the power converter, and in order to maintain positive voltage headroom for the circuitry coupled to the output of the power converter, selectively couple a bottom plate of the energy storage element to the power source such that excess energy stored by the circuitry coupled to the output of the power converter is consumed from the energy storage device when the input power of the power converter exceeds the maximum allowable input power.

    DUAL-LEVEL DETECTION TO REDUCE VOLTAGE DROOP ON CRITICAL BATTERY VOLTAGE NODES
    35.
    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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