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公开(公告)号：US12255481B2
公开(公告)日：2025-03-18
申请号：US17395682
申请日：2021-08-06
Inventor： John L. Melanson , Eric J. King , Emmanuel Marchais
IPC: H02J7/00
Abstract: A battery management system, may include an input configured to couple to a power supply, an output configured to couple to a battery, and battery management circuitry coupled between the power supply and the battery and configured to deliver electrical energy to the output at a significantly higher peak-to-average power ratio than receipt of electrical energy to the input.
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公开(公告)号：US11764595B2
公开(公告)日：2023-09-19
申请号：US17237373
申请日：2021-04-22
Inventor： Graeme G. Mackay , Ajit Sharma , Jason W. Lawrence , Eric J. King
CPC classification number: H02J7/0048 , H01M10/44 , H02M3/1582
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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公开(公告)号：US11728779B2
公开(公告)日：2023-08-15
申请号：US16745511
申请日：2020-01-17
Inventor： Jeffrey A. May , Eric J. King , Christian Larsen , Eric Eklund
CPC classification number: H03G3/007 , H02M3/04 , H03F3/20 , H03G3/004 , H03G3/3005 , H03F2200/03 , H04R3/00
Abstract: A power converter may include an input for receiving an input signal and output for generating an intermediate signal that is a power converted signal from the input signal wherein the intermediate signal is determined based on various parameters of a signal path that utilizes the intermediate signal, wherein the various parameters comprise one or more of the following: a peak output signal of the signal path, energy requested over a period of time by the signal path, available energy from an energy source to the power converter, stored energy at an output of the power converter, and stored energy of a battery for providing electrical energy at the input.
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公开(公告)号：US11515707B2
公开(公告)日：2022-11-29
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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15.发明授权公开(公告)号：US11476766B2
公开(公告)日：2022-10-18
申请号：US17119517
申请日：2020-12-11
Inventor： Jason W. Lawrence , Eric J. King , Graeme G. Mackay , Theodore M. Burk
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.
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Patent Agency Ranking
公开(公告)号：US11456704B2
公开(公告)日：2022-09-27
申请号：US16600621
申请日：2019-10-14
Inventor： Jeffrey Allen May , Eric J. King , Firas Azrai
Abstract: In accordance with embodiments of the present disclosure, a system may include a circuit having a power converter and an amplifier, wherein the power converter is configured to generate an intermediate voltage, provide the intermediate voltage as an amplifier supply voltage to the amplifier, and share the intermediate voltage with one or more additional circuits external to the circuit, wherein at least one of the one or more additional circuits is configured to generate the intermediate voltage.
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公开(公告)号：US11368151B2
公开(公告)日：2022-06-21
申请号：US17349536
申请日：2021-06-16
Inventor： John L. Melanson , Eric J. King , Thomas H. Hoff , Axel Thomsen
IPC: H03B1/00 , H03K3/00 , H03K17/687 , H02N2/00 , H02M3/158
Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers where the switching driver has an output bridge stage for switching an output node between switching voltages and a modulator for controlling the duty cycle of the output bridge stage based on an input signal. The switching driver also includes a voltage controller for providing the switching voltages which is operable to provide different switching voltages in different driver modes. A controller is provided to control the driver mode of operation and the duty cycle of the switching driver based on the input signal, and the controller is configured to transition from a present driver mode to a new driver mode by controlling the voltage controller to provide the switching voltages for the new mode and controlling the modulator to vary the duty cycle of the output bridge stage. The change in duty cycle is controlled such that there is no substantial discontinuity in switching ripple due to the mode transition.
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公开(公告)号：US10659887B2
公开(公告)日：2020-05-19
申请号：US16001596
申请日：2018-06-06
Inventor： Eric J. King , Christian Larsen , Anthony S. Doy
IPC: H03F3/217 , H04R17/00 , H03F3/183 , H04R3/00 , H03F3/187 , H02M3/07 , H02M1/00 , H02M3/158 , H04R1/10
Abstract: A system may include a charge pump configured to transfer electrical energy from a source of electrical energy coupled to an input of the charge pump to an energy storage device coupled to an output of the charge pump and configured to store the electrical energy transferred from the source of electrical energy, a power converter configured to transfer electrical energy from the energy storage device to an output of the power converter, wherein the power converter comprises a first plurality of switches and a power inductor arranged such that one switch of the first plurality of switches is coupled between the power inductor and the output of the charge pump, an output stage configured to transfer electrical energy between the output of the power converter to a load coupled to an output of the output stage, the output stage comprising a second plurality of switches, and a controller configured to generate an output voltage at the output of the output stage as an amplified version of an input signal.
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公开(公告)号：US10483924B2
公开(公告)日：2019-11-19
申请号：US15925469
申请日：2018-03-19
Inventor： Tejasvi Das , John L. Melanson , Eric J. King
Abstract: An audio amplifier circuit for providing an output signal to an audio transducer may include a power amplifier and a control circuit. The power amplifier may include an audio input for receiving an audio input signal, an audio output for generating the output signal based on the audio input signal, and a power supply input for receiving a power supply voltage, wherein the power supply voltage is variable among at least a first supply voltage and a second supply voltage greater than the first supply voltage and wherein the power supply voltage is generated by a configurable charge pump power supply. The control circuit may be configured to predict, based on one or more characteristics of a signal indicative of the output signal, an occurrence of a condition for changing the power supply voltage, and responsive to predicting the occurrence of the condition, change, at an approximate zero crossing of the signal indicative of the output signal, the power supply voltage.
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公开(公告)号：US10461640B2
公开(公告)日：2019-10-29
申请号：US15283839
申请日：2016-10-03
Inventor： Eric J. King , Siddharth Maru , John L. Melanson
Abstract: An apparatus may include a power converter having a power supply input for receiving an input power supply voltage generated by a power supply, an output for generating an output voltage to a load, and a power inductor coupled between the power supply input and the output may and further include an energy storage element coupled to the power supply input, the power inductor, and the output such that operation of the power inductor is split temporally between delivering energy to the energy storage element and delivering energy to the load, and operation of the energy storage element is split temporally between delivering energy to the load and receiving energy from one or both of the power supply and the load.
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