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公开(公告)号:US20230188044A1
公开(公告)日:2023-06-15
申请号:US18061591
申请日:2022-12-05
Inventor: Jason W. LAWRENCE , Graeme G. MACKAY
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.
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公开(公告)号:US20210050832A1
公开(公告)日:2021-02-18
申请号:US16986623
申请日:2020-08-06
Inventor: Jason W. LAWRENCE , Eric J. KING , Christian LARSEN , Hasnain AKRAM , Eric KIMBALL
Abstract: A method for operating a charge pump having a variable switching frequency may include comparing a target minimum output voltage with an output voltage generated at an output of the charge pump and controlling switching of switches of the charge pump based on the comparison such that the variable switching frequency varies as an output current driven by the charge pump varies.
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公开(公告)号:US20230037944A1
公开(公告)日:2023-02-09
申请号:US17968393
申请日:2022-10-18
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.
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公开(公告)号:US20220037908A1
公开(公告)日:2022-02-03
申请号:US17130443
申请日:2020-12-22
Inventor: Graeme G. MACKAY , Ajit SHARMA , Jason W. LAWRENCE , Lingli ZHANG
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.
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公开(公告)号:US20220037888A1
公开(公告)日:2022-02-03
申请号:US17493129
申请日:2021-10-04
Inventor: Graeme G. MACKAY , Ajit SHARMA , Jason W. LAWRENCE , Eric J. KING
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 select a constraint factor from a plurality of different constraint factors based on at least one of an input voltage to the power converter and a power level available to the power converter, and control the power converter in accordance with the constraint factor.
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公开(公告)号:US20210367517A1
公开(公告)日:2021-11-25
申请号:US17119553
申请日:2020-12-11
Inventor: Jason W. LAWRENCE , Eric J. KING , Graeme G. MACKAY
Abstract: A system for controlling a current in a power converter configured to generate an output voltage may include a control loop having a plurality of comparators, each comparator having a respective reference voltage to which the output voltage is compared, a digital controller configured to calculate one or more pre-seeded control parameters for the current, and an analog state machine configured to, based on outputs of the plurality of comparators, select control parameters for controlling the current. The control parameters may be selected from the pre-seeded control parameters, control parameters for controlling the current to have a magnitude of zero, and control parameters for controlling the current to have a maximum magnitude.
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公开(公告)号:US20210367513A1
公开(公告)日:2021-11-25
申请号:US17119497
申请日:2020-12-11
Inventor: Graeme G. MACKAY , Jason W. LAWRENCE
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.
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公开(公告)号:US20240364202A1
公开(公告)日:2024-10-31
申请号:US18308902
申请日:2023-04-28
Inventor: Jason W. LAWRENCE , Hasnain AKRAM , Graeme G. MACKAY , Ivan PERRY
CPC classification number: H02M1/0025 , H02M1/0009 , H02M3/04
Abstract: A control circuit for generating a control parameter that defines a state sequence of a power converter may include a loop filter configured to, based on an error signal between a reference current signal and a feedback current measurement signal, correct for unmodeled errors in the feedback current measurement signal to generate the control parameter. The control circuit may also include a first feedforward block configured to generate a first offset to the control parameter based on a slew rate of the reference current signal.
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公开(公告)号:US20220069702A1
公开(公告)日:2022-03-03
申请号:US17525463
申请日:2021-11-12
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.
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公开(公告)号:US20220035389A1
公开(公告)日:2022-02-03
申请号:US17171782
申请日:2021-02-09
Inventor: Graeme G. MACKAY , Ajit SHARMA , Jason W. LAWRENCE , Qiang LI
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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