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    RANDOMIZATION OF CURRENT IN A POWER CONVERTER
    21.
    发明申请
    RANDOMIZATION OF CURRENT IN A POWER CONVERTER 有权

    公开(公告)号：US20230074552A1

    公开(公告)日：2023-03-09

    申请号：US17985494

    申请日：2022-11-11

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Graeme G. MACKAY ,  Jason W. LAWRENCE

    IPC: H02M3/158 ,  H02M1/00 ,  H02M3/156

    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.

    USE OF SHARED FEEDBACK AMONG TWO OR MORE REACTIVE SCHEMES
    23.
    发明申请
    USE OF SHARED FEEDBACK AMONG TWO OR MORE REACTIVE SCHEMES 有权

    公开(公告)号：US20220037989A1

    公开(公告)日：2022-02-03

    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 ,  H02M7/00

    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 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.

    PREDICTION OF LOAD CURRENT AND CONTROL CURRENT IN A POWER CONVERTER USING OUTPUT VOLTAGE THRESHOLDS
    27.
    发明申请
    PREDICTION OF LOAD CURRENT AND CONTROL CURRENT IN A POWER CONVERTER USING OUTPUT VOLTAGE THRESHOLDS 有权

    公开(公告)号：US20210367510A1

    公开(公告)日：2021-11-25

    申请号：US17119517

    申请日：2020-12-11

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Jason W. LAWRENCE ,  Eric J. KING ,  Graeme G. MACKAY ,  Theodore M. BURK

    IPC: H02M3/04 ,  H02M1/00

    Abstract: A system for controlling a current in a power converter may include an outer control loop configured to use an outer set of output voltage thresholds for an output voltage generated by the power converter in order to provide hysteretic control of the current, an inner control loop configured to use an inner set of output voltage thresholds for the output voltage in order to provide continuous control of the current, the inner control loop further configured to measure a time duration required for the output voltage to cross a single pair of two output voltage thresholds of the inner set of output voltage thresholds in order to determine an input-referred estimate of a current load of the power converter and set a peak current threshold and a valley current threshold for the current based on the input-referred estimate of the current load.

    SMOOTHING OF FILTER RESPONSE IN A CLOSED-LOOP SYSTEM
    29.
    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
    30.
    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.

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