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公开(公告)号：US20220037989A1
公开(公告)日：2022-02-03
申请号：US17171815
申请日：2021-02-09
Inventor： Ajit SHARMA , Jason W. LAWRENCE , Graeme G. MACKAY
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：US20220286050A1
公开(公告)日：2022-09-08
申请号：US17825775
申请日：2022-05-26
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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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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公开(公告)号：US20220037907A1
公开(公告)日：2022-02-03
申请号：US17130377
申请日：2020-12-22
Inventor： Graeme G. MACKAY , Ajit SHARMA , Jason W. LAWRENCE
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 comprising a feedback loop configured to monitor a voltage derived from the power source and control a limit for a current supplied from the power source to the one or more loads based on the voltage derived from the power source.
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公开(公告)号：US20220037903A1
公开(公告)日：2022-02-03
申请号：US17237373
申请日：2021-04-22
Inventor： Graeme G. MACKAY , Ajit SHARMA , Jason W. LAWRENCE , Eric J. KING
Abstract: A system may include a power source, a power converter having an input coupled to the power source and an output for supplying electrical energy to a load, and a control circuit for controlling operation of the power converter. The control circuit may include a first feedback control subsystem configured to monitor an output voltage present at the output of the power converter and regulate the output voltage at or about a predetermined regulated voltage level in a normal mode of operation of the power converter and a second feedback control subsystem configured to monitor an input voltage present between the power source and the input of the power converter and responsive to the input voltage decreasing below a predetermined minimum voltage level, causing the power converter to operate in a protection mode of operation in order to maintain the input voltage at or about the predetermined minimum voltage level.
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Patent Agency Ranking
公开(公告)号：US20210159798A1
公开(公告)日：2021-05-27
申请号：US17080030
申请日：2020-10-26
Inventor： Graeme G. MACKAY , Eric J. KING , Ajit SHARMA
IPC: H02M3/158 , G01R19/165
Abstract: A system may include a power converter configured to convert a source voltage from a power source to an output voltage at an output capacitor at an output of the power converter, a dual-mode power converter electrically coupled to the power converter, the dual-mode power converter having a plurality of switches and a power inductor, an energy storage element electrically coupled to the dual-mode power converter, and control circuity configured to, when the output voltage is below a threshold voltage magnitude, control the plurality of switches to operate the dual-mode power converter as a buck converter in order to transfer energy from the energy storage element to the output capacitor via an electrical current through the power inductor.
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公开(公告)号：US20230208303A1
公开(公告)日：2023-06-29
申请号：US18174106
申请日：2023-02-24
Inventor： Eric J. KING , Ajit SHARMA , Lingli ZHANG , Christian LARSEN , Graeme G. MACKAY
CPC classification number: H02M3/158 , H02M1/08 , H02M3/1584 , H02M1/008
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 circuitry 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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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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