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公开(公告)号：US11594958B2
公开(公告)日：2023-02-28
申请号：US17538169
申请日：2021-11-30
Inventor： Eric J. King , Axel Thomsen , Anthony S. Doy , Thomas H. Hoff , John L. Melanson
Abstract: Driver circuitry for driving a load based on an input signal, comprising: at least one variable boost stage comprising: first and second input nodes configured to receive a first voltage and a second voltage respectively; first and second flying capacitor nodes for connection to a flying capacitor therebetween; a network of switching paths for selectively connecting the first and second input nodes with the first and second flying capacitor nodes; an output stage for selectively connecting a driver output node to each of the first and second flying capacitor nodes; and a controller operable in a first boost mode to: control the output stage to selectively connect the driver output node to the first flying capacitor node; control the network of switching paths to switch connection of the second flying capacitor node between the first and second input nodes at a controlled duty cycle; and in a first charge top-up cycle, control the network of switching paths to connect the first input node to the first flying capacitor node during a phase of the controlled duty cycle in which the first input node is connected to the second flying capacitor node; wherein the frequency of the controlled duty cycle is greater than the frequency of the charge top-up cycle.
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公开(公告)号：US11476759B2
公开(公告)日：2022-10-18
申请号：US16709036
申请日：2019-12-10
Inventor： Jason W. Lawrence , John L. Melanson , Eric J. King
Abstract: A system may include a power converter comprising at least one stage having a dual anti-wound inductor constructed such that its windings generate opposing magnetic fields in its magnetic core and a current control subsystem for controlling an electrical current through the dual anti-wound inductor. The current control subsystem may be 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：US11469661B2
公开(公告)日：2022-10-11
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：US11251702B2
公开(公告)日：2022-02-15
申请号：US15432150
申请日：2017-02-14
Inventor： Sarang Vadnerkar , Ullas Pazhayaveetil , Eric J. King
Abstract: A method may include operating a DC-DC switch converter in a forced continuous conduction mode in which for each switching cycle of the switch converter during the forced continuous conduction mode, the switch converter operates in a series of phases including: a first phase in which an inductor current flowing in an inductor of the switch converter increases from zero to a controlled positive current magnitude with respect to a first terminal and a second terminal of the inductor; a second phase in which the inductor current decreases from the controlled positive current magnitude to approximately zero; a third phase in which the inductor current decreases from approximately zero to a controlled negative current magnitude with respect to a first terminal and a second terminal of the inductor; and a fourth phase in which the inductor current increases from the controlled negative current magnitude to approximately zero.
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公开(公告)号：US11239752B2
公开(公告)日：2022-02-01
申请号：US15229616
申请日：2016-08-05
Inventor： Jeffrey Allen May , Eric J. King , Ku He , Sarang Vadnerkar , Ullas Pazhayaveetil , Theodore M. Burk
Abstract: A method may include monitoring an input power supply, monitoring an inductance of an inductor of a boost converter, monitoring one or more other characteristics of the boost converter, and calculating a target peak inductor current based on the input power supply voltage, the inductance, the one or more other characteristics of the boost converter, and a target average current of the inductor during a switching cycle of the boost converter. A method may include monitoring an input power supply voltage, monitoring an inductance of an inductor of a boost converter, monitoring one or more other characteristics of the boost converter, and calculating an average current of the inductor during a switching cycle of the boost converter based on the input power supply voltage, the inductance, the one or more other characteristics of the boost converter, and a peak inductor current of the inductor.
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Patent Agency Ranking
公开(公告)号：US10826452B2
公开(公告)日：2020-11-03
申请号：US15887657
申请日：2018-02-02
Inventor： Eric J. King , Emmanuel Marchais
Abstract: A system may include a charge pump configured to boost an input voltage of the charge pump to an output voltage greater than the input voltage, a current mode control loop for current mode control of a power amplifier powered by the output voltage of the charge pump, and a controller configured to, in a current-limiting mode of the controller, control an output power of the charge pump to ensure that an input current of the charge pump is maintained below a current limit, control the power amplifier by placing the power amplifier into a high-impedance mode during the current-limiting mode, and control state variables of a loop filter of the current mode control loop during the current-limiting mode.
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公开(公告)号：US10720835B2
公开(公告)日：2020-07-21
申请号：US16122619
申请日：2018-09-05
Inventor： Eric J. King , Eric B. Smith
Abstract: A method may include monitoring a current through a power inductor of a boost converter and detecting when a mathematical integral of a difference between the current as monitored and a desired average current for the power inductor is equal to zero. Another method may include in a first mode of operation of a boost converter, controlling switching behavior of switches of the boost converter to regulate an output voltage generated by the boost converter and in a second mode of operation of the boost converter, controlling switching behavior of switches of the boost converter to regulate an input current received by the boost converter. Another method may include monitoring a current through a power inductor of a boost converter and detecting when the current as monitored exceeds a maximum current for the power inductor.
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公开(公告)号：US10651800B2
公开(公告)日：2020-05-12
申请号：US15887644
申请日：2018-02-02
Inventor： Eric J. King , John L. Melanson
Abstract: A boosted amplifier system may include a boost stage configured to boost an input voltage of the boost stage to an output voltage greater than the input voltage and an amplifier stage powered by the output voltage of the charge pump and configured to amplify an input signal to generate an output signal. The boost stage may have input current limiting circuitry for ensuring that an input current of the boost stage is maintained below a current limit and the amplifier stage may have an input for receiving an indication of whether the current-limiting circuitry of the boost stage is activated to maintain the input current of the boost stage below the current limit.
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公开(公告)号：US10284090B2
公开(公告)日：2019-05-07
申请号：US15650378
申请日：2017-07-14
Inventor： Firas Azrai , Eric J. King , Aaron J. Brennan
Abstract: In accordance with embodiments of the present disclosure, a system may include a series combination of a boost converter and a power converter coupled together in series, such that the series combination boosts an input voltage to the series combination to an output voltage greater than the input voltage such that a voltage boost provided by the series combination is greater than a voltage boost provided by the boost converter alone. The system may also include an amplifier, wherein an input of the amplifier is coupled to an output of the series combination of the boost converter and the power converter.
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公开(公告)号：US09973156B2
公开(公告)日：2018-05-15
申请号：US15285038
申请日：2016-10-04
Inventor： Eric J. King , Zhaohui He , John L. Melanson , Siddharth Maru
CPC classification number: H03F3/2171 , H02M5/293 , H02M2005/2932 , H03F1/0216 , H03F1/0227 , H03F1/32 , H03F3/185 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/153 , H03F2200/432 , H04R3/12
Abstract: A method may include processing a first signal derived from an input signal with a first path to generate a first path voltage at a first path output, processing a second signal derived from the input signal with a second path to generate a second path voltage at a second path output, the second path comprising a linear amplifier having at least one transistor for driving the second path voltage, generating the first signal and the second signal with a signal splitter, such that the second signal comprises information of the input signal absent from the first signal, and such that the second path voltage is of a sufficient magnitude such that the at least one transistor operates in a saturation region of the at least one transistor throughout a dynamic range of a load voltage equal to the difference of the first path voltage and the second path voltage.
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