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    POWER SUPPLY ARCHITECTURE WITH BIDIRECTIONAL BATTERY IDEALIZATION
    3.
    发明公开
    POWER SUPPLY ARCHITECTURE WITH BIDIRECTIONAL BATTERY IDEALIZATION 审中-公开

    公开(公告)号：US20240072559A1

    公开(公告)日：2024-02-29

    申请号：US18503830

    申请日：2023-11-07

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Ivan PERRY ,  Hasnain AKRAM ,  Eric J. KING

    IPC: H02J7/00

    CPC classification number: H02J7/0068 ,  H02J7/0063 ,  H02J2207/20 ,  H02J2310/22

    Abstract: A power management system for use in a device comprising a battery and one or more components configured to draw electrical energy from the battery may include a first power converter configured to electrically couple between charging circuitry configured to provide electrical energy for charging the battery and the one or more downstream components and a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge from the battery based on a power requirement of the one or more components and a power available from the first power converter.

    DELTA-BASED CURRENT STEERING FOR POWER CONVERTER PEAK/VALLEY CURRENT CONTROL
    5.
    发明公开
    DELTA-BASED CURRENT STEERING FOR POWER CONVERTER PEAK/VALLEY CURRENT CONTROL 审中-公开

    公开(公告)号：US20230188156A1

    公开(公告)日：2023-06-15

    申请号：US17990098

    申请日：2022-11-18

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Ivan PERRY ,  Hasnain AKRAM ,  Graeme G. MACKAY ,  Pietro GALLINA ,  Chanchal GUPTA ,  Bryan QUINONES ,  Abhishek RAY

    IPC: H03M1/74 ,  H04R1/00

    CPC classification number: H03M1/742 ,  H04R1/005

    Abstract: A power converter system for converting an input voltage at an input into an output voltage at an output may comprise a switch network comprising a reactive circuit element and a plurality of switches, switch control circuitry configured to operate the plurality of switch in a plurality of periodic, sequential states to regulate the output voltage, and reference current generating circuitry. The reference current generating circuitry may include a comparator coupled to a sensed switch of the plurality of switches and configured to compare a current flowing through the sensed switch to a reference current and current-steering circuitry coupled to the comparator configured to generate the reference current and alternate the reference current between a first reference current and a second reference current whenever the switch control circuitry changes from one state of the plurality of periodic, sequential states to another state of the plurality of periodic, sequential states.

    SMOOTHING OF FILTER RESPONSE IN A CLOSED-LOOP SYSTEM
    8.
    发明公开
    SMOOTHING OF FILTER RESPONSE IN A CLOSED-LOOP SYSTEM 审中-公开

    公开(公告)号：US20240364199A1

    公开(公告)日：2024-10-31

    申请号：US18308938

    申请日：2023-04-28

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Hasnain AKRAM ,  Graeme G. MACKAY

    IPC: H02M1/00 ,  H02M3/158 ,  H03H7/01

    CPC classification number: H02M1/0003 ,  H02M3/158 ,  H03H7/0153

    Abstract: A system may include a first closed-loop feedback control loop, comprising a first filter located within a signal path of the first closed-loop feedback control loop and configured to regulate a physical quantity comprising at least one of an output voltage or an output current of the system and a second filter communicatively coupled to the first filter and configured to, based on one or more variables associated with the closed-loop feedback control system, control at least one filter parameter of the first filter in order to control a response of the first filter. The system may also include a second closed-loop feedback system nested with the first closed-loop feedback control loop comprising a power converter comprising a plurality of switches and a power inductor and a loop filter configured to control an inductor current through the power inductor.

    SWITCH BOOTSTRAPPING FOR MULTI-LEVEL INDUCTIVE POWER CONVERTER
    9.
    发明公开
    SWITCH BOOTSTRAPPING FOR MULTI-LEVEL INDUCTIVE POWER CONVERTER 审中-公开

    公开(公告)号：US20240356441A1

    公开(公告)日：2024-10-24

    申请号：US18628007

    申请日：2024-04-05

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Graeme G. MACKAY ,  Jin-Jyh SU ,  Hasnain AKRAM ,  Changjong LIM ,  Dave MARSHNIL

    IPC: H02M3/158 ,  H02M1/08 ,  H02M3/07

    CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/07

    Abstract: A multi-level power converter configured to receive a power supply and generate an inductor current may include a first switch coupled to a first capacitor, a second switch coupled to a second capacitor, a third switch coupled to a third capacitor, a fourth switch, an inductor coupled to a switch node between the second switch and the third switch, and a flying capacitor having a first terminal coupled to a first node between the first and second switch and a second terminal coupled to a second node between the third and fourth switch, wherein the second capacitor is configured to share charge with at least one of the first capacitor and the third capacitor to enable non-gate terminals of at least one of the first switch, the second switch, and the third switch to replenish with charge at or approximate to a duty cycle extreme of the multi-level power converter.

    LOW-POWER MODE FOR MULTI-LEVEL CONVERTER
    10.
    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.

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