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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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Patent Agency Ranking
公开(公告)号：US20210364560A1
公开(公告)日：2021-11-25
申请号：US17118330
申请日：2020-12-10
Inventor： Kathryn R. HOLLAND , Bo-Ren WANG , Ravi K. KUMMARAGUNTLA , Graeme G. MACKAY , Christian LARSEN
Abstract: An apparatus may include a sense resistor comprising a plurality of parallel-coupled resistor elements, a plurality of positive voltage sense points, and a plurality of negative voltage sense points. A first passive combination network may be configured to combine the plurality of positive voltage sense points into a single positive sense terminal and a second passive combination network may be configured to combine the plurality of negative voltage sense points into a single negative sense terminal. The first passive combination network and the second passive combination network may be arranged such that a sense voltage is measurable between the single positive sense terminal and the single negative sense terminal and a dependence of the sense voltage on a variation in current density in the parallel-coupled resistor elements is minimized.
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公开(公告)号：US20210126528A1
公开(公告)日：2021-04-29
申请号：US17075139
申请日：2020-10-20
Inventor： Eric J. KING , John L. MELANSON , Graeme G. MACKAY , Lingli ZHANG
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.
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公开(公告)号：US20210083578A1
公开(公告)日：2021-03-18
申请号：US16916395
申请日：2020-06-30
Inventor： Eric J. KING , Ajit SHARMA , Lingli ZHANG , Christian LARSEN , Graeme G. MACKAY
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.
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19.发明公开公开(公告)号：US20240235389A1
公开(公告)日：2024-07-11
申请号：US18458331
申请日：2023-08-30
Inventor： Hasnain AKRAM , Graeme G. MACKAY , Jason W. LAWRENCE , Ilija JERGOVIC , Eric J. KING , Thomas H. HOFF , Paulo RAYMUNDO SILVA
Abstract: In accordance with embodiments of the present disclosure, a power converter system may comprise a plurality of power converter stages in a cascaded arrangement, the power converter stages comprising at least a first power converter stage and a second power converter stage configured to modify an operational state and/or an operational mode of the second power converter stage responsive to feedforward information associated with the first power converter stage.
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公开(公告)号：US20230188156A1
公开(公告)日：2023-06-15
申请号：US17990098
申请日：2022-11-18
Inventor： Ivan PERRY , Hasnain AKRAM , Graeme G. MACKAY , Pietro GALLINA , Chanchal GUPTA , Bryan QUINONES , Abhishek RAY
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.
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