公开(公告)号：US12283838B2

公开(公告)日：2025-04-22

申请号：US17394782

申请日：2021-08-05

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ross C. Morgan

IPC: H02J50/80 ,  B60L53/53 ,  H02J7/00 ,  H02J50/10 ,  H04B5/79 ,  H02J7/34

Abstract: A system includes a wireless transmission module configured to transmit electrical energy to a wireless receiver module via reverse wireless charging, one or more electronic components other than the wireless transmission module, a battery configured to provide electrical energy to the wireless transmission module and the one or more electronic components, and a battery management module coupled to the battery and the wireless transmission module. The battery management module is configured to determine an amount of power demanded by the wireless transmission module and the one or more electronic components from the battery and dynamically vary power transfer from the wireless transmission module to the wireless receiver module as a function of the amount of power demanded by the one or more electronic components.

公开(公告)号：US11962180B2

公开(公告)日：2024-04-16

申请号：US17220641

申请日：2021-04-01

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Emmanuel Marchais ,  Ross C. Morgan ,  Ivan Perry ,  Eric J. King

IPC: H02J7/00 ,  H02M1/00 ,  H02M3/04

CPC classification number: H02J7/007 ,  H02M1/008 ,  H02J2207/20 ,  H02M3/04

Abstract: A power delivery system may include an inductive power converter comprising a shared connection to a shared voltage from a battery, multiple inductive phases, each of the multiple inductive phases configured to generate a respective voltage from the shared voltage, multiple regulated voltage connections, and one or more switches configured and arranged to selectively assign at least one of the multiple inductive phases to a regulated voltage connection selected from the multiple regulated voltage connections.

公开(公告)号：US12155380B2

公开(公告)日：2024-11-26

申请号：US18188053

申请日：2023-03-22

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ross C. Morgan ,  Yongjie Cheng ,  Lingli Zhang

IPC: H03K17/687 ,  H03K17/06

Abstract: This application relates to methods and apparatus for driving a transducer connected between two output nodes in a bridge-tied-load configuration. A driver receives first and second supply voltages and has charge pumps that generate respective first and second boosted voltages. The driver is operable in a first driver mode in which each output node is modulated between the first and second supply voltage; a second driver mode in which one output nodes is modulated between the first and second supply voltages and the other output node is modulated between either the first boosted voltage and the first supply voltage or between the second supply voltage and the second boosted voltage; and a third driver mode in which one of the output nodes is modulated between the first supply voltage and the first boosted voltage and the other output node is modulated between the second supply voltage and the second boosted voltage.

公开(公告)号：US12101085B1

公开(公告)日：2024-09-24

申请号：US18188067

申请日：2023-03-22

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ross C. Morgan ,  Joe Walker ,  Yongjie Cheng ,  Lingli Zhang

IPC: H03K17/693 ,  H03K3/017 ,  H03K17/687

CPC classification number: H03K17/693 ,  H03K3/017 ,  H03K17/6871

Abstract: This application relates to methods and apparatus for multichannel drivers for driving transducers in different channels. A multichannel driver has a plurality of output stages configured such that two output nodes can be modulated between selected switching voltages with a controlled duty cycle to generate a differential output signal across a respective transducer, each output stage being operable with different switching voltages in different modes of operation. A first set of two or more of the output stages are arranged to receive a voltage output by a capacitive voltage generator to use as a switching voltage. A controller is configured to control the mode of operation and duty-cycle of each of the output stages based on a respective input signal and also based on operation of the other output stages of the first set.

公开(公告)号：US11658673B2

公开(公告)日：2023-05-23

申请号：US17380176

申请日：2021-07-20

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ross C. Morgan ,  Tahir Rashid ,  Jonathan Taylor

IPC: H03M1/10 ,  H02P7/295 ,  G05F3/26 ,  H02J7/00 ,  H03K7/08 ,  H02M3/156 ,  H03M1/50 ,  H02P7/29

CPC classification number: H03M1/1071 ,  G05F3/262 ,  H02J7/0063 ,  H02J7/007182 ,  H02M3/156 ,  H02P7/29 ,  H02P7/295 ,  H03K7/08 ,  H03M1/504

Abstract: The present disclosure relates to circuitry comprising: digital circuitry configured to generate a digital output signal; and monitoring circuitry configured to monitor a supply voltage to the digital circuitry and to output a control signal for controlling operation of the digital circuitry, wherein the control signal is based on the supply voltage.

公开(公告)号：US11552627B2

公开(公告)日：2023-01-10

申请号：US17226843

申请日：2021-04-09

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Tahir Rashid ,  Jonathan Taylor ,  Ross C. Morgan ,  Holger Haiplik

IPC: H03K7/08 ,  H03M1/12

Abstract: The present disclosure relates to circuitry comprising: pulse-width modulation (PWM) circuitry configured to generate a PWM output signal; and monitoring circuitry configured to monitor a supply voltage to the PWM circuitry and to output a control signal for controlling operation of the PWM circuitry, wherein the control signal is based on the supply voltage.

公开(公告)号：US12301247B2

公开(公告)日：2025-05-13

申请号：US18182020

申请日：2023-03-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ross C. Morgan ,  Tahir Rashid ,  Jonathan Taylor

IPC: H03M1/10 ,  G05F3/26 ,  H02J7/00 ,  H02M3/156 ,  H02P7/29 ,  H02P7/295 ,  H03K7/08 ,  H03M1/50

Abstract: The present disclosure relates to circuitry comprising: digital circuitry configured to generate a digital output signal; and monitoring circuitry configured to monitor a supply voltage to the digital circuitry and to output a control signal for controlling operation of the digital circuitry, wherein the control signal is based on the supply voltage.

公开(公告)号：US11990896B2

公开(公告)日：2024-05-21

申请号：US17874357

申请日：2022-07-27

Applicant: Cirrus Logic International Semiconductor Ltd.

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.