-
1.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.
-
公开(公告)号：US20230381814A1
公开(公告)日：2023-11-30
申请号：US18323779
申请日：2023-05-25
Inventor： Axel THOMSEN , Eric J. KING , Anthony S. DOY , Thomas H. HOFF , John L. MELANSON
CPC classification number: B06B1/0223 , G06F3/016 , B06B1/0215 , B06B1/0688 , H10N30/802
Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers. A driver circuit has first and second switching drivers for driving the transducer in a bridge-tied-load configuration, each of the switching drivers having a respective output stage for controllably switching the respective driver output node between high and low switching voltages with a controlled duty cycle. Each of switching drivers is operable in a plurality of different driver modes, wherein the switching voltages are different in said different driver modes. A controller controls the driver mode of operation and the duty cycle of the switching drivers based on the input signal. The controller is configured to control the duty cycles of the first and second switching drivers within defined minimum and maximum limits of duty cycles; and to transition between driver modes of operation when the duty cycle of one of the switching drivers reaches a duty cycle limit.
-
公开(公告)号：US20230369882A1
公开(公告)日：2023-11-16
申请号：US18308480
申请日：2023-04-27
Inventor： John L. MELANSON , Eric J. KING
CPC classification number: H02J7/345 , H02M1/0087 , H02J7/04 , H02J2207/20
Abstract: A battery charging system may include a first current source for charging a battery that provides a direct current for charging the battery and a second current source for charging the battery that provides an alternating current for charging the battery and that provides electrical energy for operation of a system load of the battery during discharging of the battery. Further, a battery charging system may include a first current source for charging a battery that provides a direct current for charging the battery and a second current source for charging the battery that provides an alternating current at a frequency of at least 5 KHz for charging the battery.
-
公开(公告)号：US20230132872A1
公开(公告)日：2023-05-04
申请号：US17898635
申请日：2022-08-30
Inventor： John L. MELANSON , Eric J. KING , Thomas H. HOFF , Lingli ZHANG
IPC: H03M1/06
Abstract: Pulse width modulation (PWM) driver circuitry comprising: a loop filter configured to receive an analog input signal and to output a digital loop filter output signal based on the analog input signal and an analog feedback signal; and a PWM modulator configured to receive a digital signal based on the digital loop filter output signal and to output a PWM signal, wherein the PWM driver circuitry further comprises a feedback path coupled to an output of the PWM driver circuitry for the analog feedback signal.
-
5.发明申请公开(公告)号：US20210367510A1
公开(公告)日：2021-11-25
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.
-
Patent Agency Ranking
公开(公告)号：US20210344305A1
公开(公告)日：2021-11-04
申请号：US17376811
申请日：2021-07-15
Inventor： Eric J. KING
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.
-
公开(公告)号：US20190302161A1
公开(公告)日：2019-10-03
申请号：US16267079
申请日：2019-02-04
Inventor： Zhong YOU , Siddharth MARU , Tejasvi DAS , Luke LAPOINTE , Eric J. KING , Anthony S. DOY , Srdjan MARJIANOVIC , Drew KINNEY , Matthew BEARDSWORTH , Emmanuel MARCHAIS
Abstract: A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency, and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a mechanical member relative to the resistive-inductive-capacitive sensor, wherein the displacement of the mechanical member causes a change in an impedance of the resistive-inductive-capacitive sensor.
-
公开(公告)号：US20170272044A1
公开(公告)日：2017-09-21
申请号：US15270687
申请日：2016-09-20
Inventor： John L. MELANSON , Eric J. KING , Zhaohui HE , Siddharth MARU
CPC classification number: H03F3/2173 , H03F3/187 , H03F2200/165 , H03F2200/432 , H04R3/02 , H04R2420/03
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.
-
公开(公告)号：US20240429929A1
公开(公告)日：2024-12-26
申请号：US18824537
申请日：2024-09-04
Inventor： John L. MELANSON , Eric J. KING , Thomas H. HOFF , Lingli ZHANG
Abstract: Pulse width modulation (PWM) driver circuitry comprising: a loop filter configured to receive an analog input signal and to output a digital loop filter output signal based on the analog input signal and an analog feedback signal; and a PWM modulator configured to receive a digital signal based on the digital loop filter output signal and to output a PWM signal, wherein the PWM driver circuitry further comprises a feedback path coupled to an output of the PWM driver circuitry for the analog feedback signal.
-
10.发明公开公开(公告)号：US20230336013A1
公开(公告)日：2023-10-19
申请号：US18295530
申请日：2023-04-04
Inventor： Emmanuel A. MARCHAIS , Eric J. KING , John L. MELANSON
IPC: G01R31/367 , G01R31/389 , H02J7/00
CPC classification number: H02J7/0068 , G01R31/367 , G01R31/389
Abstract: A method of adapting a battery charging profile of a battery may include monitoring one or more parameters associated with the battery during normal operation of a device powered from the battery and while the battery is simultaneously charged by a charger and is discharged by a dynamic system load of the device, determining an impedance of the battery based on the one or more parameters, determining a condition of the battery based on the impedance and the one or more parameters, and adapting the battery charging profile based on the condition.
-
-
-
-
-
-
-
-
-
Search Results
78
records
(took 0.026 seconds)
