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公开(公告)号：US10193505B2
公开(公告)日：2019-01-29
申请号：US15661446
申请日：2017-07-27
Inventor： Emmanuel Marchais , Lingli Zhang , Eric J. King , Christian Larsen
Abstract: In accordance with embodiments of the present disclosure, a system may have a configurable control loop technology, wherein the system comprises a first mode control loop, a second mode control loop and a reconfigurable pulse width modulator (PWM) configured to generate an output signal from an input signal. The reconfigurable PWM may include a digital PWM and an analog PWM and may be configured such that when the first mode control loop is activated, the reconfigurable PWM utilizes the analog PWM to generate the output signal from the input signal and when the second mode control loop is activated, the reconfigurable PWM utilizes the digital PWM to generate the output signal from the input signal and the digital PWM receives its input from a digital proportional integral derivative controller.
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公开(公告)号：US10090814B2
公开(公告)日：2018-10-02
申请号：US15270687
申请日：2016-09-20
Inventor： John L. Melanson , Eric J. King , Zhaohui He , Siddharth Maru
Abstract: A signal processing system for producing a load voltage at a load output of the signal processing system, wherein the load output comprises a first load terminal having a first load voltage and a second load terminal having a second load voltage such that the load voltage comprises a difference between the first load voltage and the second load voltage, and may include a first processing path configured to process a first signal derived from an input signal to generate the first load voltage at a first processing path output, a second processing path configured to process a second signal received at a second processing path input and derived from the input signal, wherein the second signal comprises information of the input signal absent from the first signal, to generate the second load voltage at a second processing path output, and a high-pass filter coupled between the first processing path output and the second processing path input.
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公开(公告)号：US12108223B2
公开(公告)日：2024-10-01
申请号：US18460218
申请日：2023-09-01
Inventor： Anthony S. Doy , Eric J. King
IPC: H04R3/00 , H03F3/217 , H03K17/687
CPC classification number: H04R3/00 , H03K17/687 , H03F3/217
Abstract: The application describes a switched driver (401) for outputting a drive signal at an output node (402) to drive a load such as a transducer. The driver receives respective high-side and low-side voltages (VinH, VinL) defining an input voltage at first and second input nodes and has connections for first and second capacitors (403H, 403L). A network of switching paths is configured such that each of the first and second capacitors can be selectively charged to the input voltage, the first input node can be selectively coupled to a first node (N1) by a path that include or bypass the first capacitor, and the second input node can be selectively coupled to a second node (N2) by a path that includes or bypasses the second capacitor. The output node (402) can be switched between two switching voltages at the first or second nodes. The driver is selectively operable in different operating modes, where the switching voltages are different in each of said modes.
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公开(公告)号：US12107551B2
公开(公告)日：2024-10-01
申请号：US17376811
申请日：2021-07-15
Inventor： Eric J. King
CPC classification number: H03F1/0227 , H02M3/158 , H03F3/187 , H03F2200/03 , H03F2200/504
Abstract: A mobile device may include a power supply configured to generate a supply voltage, a power converter configured to generate a converted voltage from the supply voltage wherein the converted voltage is significantly different than the supply voltage, and a plurality of power domains. The plurality of power domains may include a first power domain that is global to the mobile device and comprising a first plurality of electronic components powered from the converted voltage and a second power domain that is global to the mobile device and comprising a second plurality of electronic components powered from the supply voltage, wherein power requirements of each of the second plurality of electronic components are significantly higher than power requirements of each of the first plurality of electronic components.
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公开(公告)号：US11990896B2
公开(公告)日：2024-05-21
申请号：US17874357
申请日：2022-07-27
Inventor： Axel Thomsen , Eric J. King , Thomas H. Hoff , John L. Melanson , Angus Black , Ross C. Morgan , Malcolm Blyth
IPC: H03K17/687 , H02M3/158 , H02N2/00
CPC classification number: H03K17/6871 , H02M3/158 , H02N2/0075
Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers. A switching driver has first and second supply node for receiving supply voltages and includes an output bridge stage, a capacitor and a network of switches. The network of switches is operable in different switch states to provide different switching voltages to the output bridge stage. A controller is configured to control the switch state of the network of switches and a duty cycle of output switches of the output bridge stage based on an input signal to generate an output signal for driving the transducer.
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Patent Agency Ranking
公开(公告)号：US11463008B2
公开(公告)日：2022-10-04
申请号：US17080030
申请日：2020-10-26
Inventor： Graeme G. Mackay , Eric J. King , Ajit Sharma
IPC: H02M3/158 , G01R19/165 , H02M1/00 , H02M3/156
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：US11183849B1
公开(公告)日：2021-11-23
申请号：US17154428
申请日：2021-01-21
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：US11152906B2
公开(公告)日：2021-10-19
申请号：US17012209
申请日：2020-09-04
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：US11031867B2
公开(公告)日：2021-06-08
申请号：US16202463
申请日：2018-11-28
Inventor： Mikel Ash , Eric J. King , Lingli Zhang , Graeme G. Mackay
Abstract: A method may include controlling switching behavior of switches of a switch-mode power supply based on a desired physical quantity associated with the switch-mode power supply, wherein the desired physical quantity is based at least in part on a slope compensation signal and generating the slope compensation signal to have a compensation value of approximately zero at an end of a duty cycle of operation of the switch-mode power supply.
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公开(公告)号：US10998867B2
公开(公告)日：2021-05-04
申请号：US16846335
申请日：2020-04-11
Inventor： Thomas Hoff , Eric J. King
Abstract: A power output circuit supplies an audio power output signal that is adjusted to prevent clipping when needed based on an estimate of available energy from the power supply supplying the power output circuit. The power output circuit may be an audio power output circuit that generates an audio power output signal from samples of an audio program that are stored in a buffer. A processing block determines an energy requirement for producing the audio power output signal from the audio program and adjusts an amplitude of the audio power output signal in conformity with the determined energy requirement and an available energy determined for the power supply so that the audio power output signal is reproduced without clipping of the audio power output signal.
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