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1. 发明授权

US11962180B2 Multi-output multi-phase boost converter with dynamically assignable phases 有权
公开(公告)号：US11962180B2
公开(公告)日：2024-04-16
申请号：US17220641
申请日：2021-04-01
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Emmanuel Marchais , Ross C. Morgan , Ivan Perry , Eric J. King
IPC分类号： H02J7/00 , H02M1/00 , H02M3/04
CPC分类号： H02J7/007 , H02M1/008 , H02J2207/20 , H02M3/04
摘要： 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.

2. 发明授权

US11792569B2 Driver circuits 有权
公开(公告)号：US11792569B2
公开(公告)日：2023-10-17
申请号：US18101816
申请日：2023-01-26
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Anthony S. Doy , Eric J. King
IPC分类号： H04R3/00 , H03K17/687 , H03F3/217
CPC分类号： H04R3/00 , H03K17/687 , H03F3/217
摘要： 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.

3. 发明授权

US11770064B2 Prediction of load current and control current in a power converter using output voltage thresholds by pre-seeding target current values 有权
公开(公告)号：US11770064B2
公开(公告)日：2023-09-26
申请号：US17119553
申请日：2020-12-11
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Jason W. Lawrence , Eric J. King , Graeme G. MacKay
IPC分类号： H02M3/158 , H02M1/00 , H02M3/156 , H02M3/157 , H02M3/04 , H02M1/15
CPC分类号： H02M1/0025 , H02M1/0016 , H02M3/1566 , H02M3/1584 , H02M3/1586 , H02M1/00 , H02M1/0009 , H02M1/15 , H02M3/04 , H02M3/157 , H02M3/1582 , H02M1/0025 , H02M1/0016
摘要： A system for controlling a current in a power converter configured to generate an output voltage may include a control loop having a plurality of comparators, each comparator having a respective reference voltage to which the output voltage is compared, a digital controller configured to calculate one or more pre-seeded control parameters for the current, and an analog state machine configured to, based on outputs of the plurality of comparators, select control parameters for controlling the current. The control parameters may be selected from the pre-seeded control parameters, control parameters for controlling the current to have a magnitude of zero, and control parameters for controlling the current to have a maximum magnitude.

4. 发明授权

US11296598B1 Driver circuitry 有权
公开(公告)号：US11296598B1
公开(公告)日：2022-04-05
申请号：US17192990
申请日：2021-03-05
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Eric J. King , Axel Thomsen , Anthony S. Doy , Thomas H. Hoff , John L. Melanson
IPC分类号： H02M3/07 , H02M3/156
摘要： 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 a greater than the frequency of the charge top-up cycle.

5. 发明授权

US11277129B2 Driver circuitry and operation 有权
公开(公告)号：US11277129B2
公开(公告)日：2022-03-15
申请号：US17314917
申请日：2021-05-07
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Axel Thomsen , Eric J. King , Anthony S. Doy , Thomas H. Hoff , John L. Melanson
IPC分类号： H03B1/00 , H03K3/00 , H03K17/687 , H02N2/00 , H02M3/158
摘要： 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.

6. 发明授权

US10942610B2 False triggering prevention in a resonant phase sensing system 有权
公开(公告)号：US10942610B2
公开(公告)日：2021-03-09
申请号：US16831323
申请日：2020-03-26
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Siddharth Maru , Tejasvi Das , Luke Lapointe , Srdjan Marijanovic , Zhong You , Drew Kinney , Anthony S. Doy , Eric J. King
IPC分类号： G06F3/044 , G06F3/041 , G06F3/045 , G01D5/243 , G01D5/20
摘要： A system may include a resistive-inductive-capacitive sensor, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to at a plurality of periodic intervals, 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. The system may also include a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency and a driving amplitude, wherein at least one of the driving frequency and the driving amplitude varies among the plurality of periodic intervals.

7. 发明授权

US10848061B2 Switching power converter 有权
公开(公告)号：US10848061B2
公开(公告)日：2020-11-24
申请号：US16239092
申请日：2019-01-03
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Eric J. King , Siddharth Maru , John L. Melanson
IPC分类号： H02M1/00 , H02M3/158 , H02M1/088 , H02M1/10 , H02J7/34 , H02M1/084
CPC分类号： H02M3/158 , H02J7/34 , H02J7/345 , H02M1/084 , H02M1/10 , H02M1/088 , H02M3/1582 , H02M2001/008 , H02M2001/009
摘要： 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.

8. 发明授权

US10819238B1 Power system having multiple power conversion units with handoff of power regulation control 有权
公开(公告)号：US10819238B1
公开(公告)日：2020-10-27
申请号：US16032625
申请日：2018-07-11
申请人： Cirrus Logic International Semiconductor, Ltd.
发明人： Eric J. King , Eric B. Smith , Hasnain Akram , Sean Davis
IPC分类号： H02M1/00 , H02M3/158 , G05F1/66 , H02M3/00
摘要： A power supply system and method include multiple power conversion units (PCUs) with independent power generation control and a PCU-to-PCU regulation of power, handoff control system to transfer control of power regulation to a load among the PCUs. The multiple PCUs maintain independent power generation control to collectively provide power to the load and handoff regulation of the power to the load from one PCU to another PCU. The term “handoff” refers to communication between PCUs that affects a transfer and acceptance of regulation of power control. The independent PCU power generation control with singularly located but transferable control of the regulation of power provides a flexible dynamic power supply.

9. 发明授权

US10644661B2 Variable output resistance in a playback path with open-loop pulse-width modulation driver 有权
公开(公告)号：US10644661B2
公开(公告)日：2020-05-05
申请号：US16190427
申请日：2018-11-14
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Tejasvi Das , Eric J. King , Xin Zhao , Xiaofan Fei , Johann G. Gaboriau , Lei Zhu , John L. Melanson , Thomas Hoff
IPC分类号： H03F3/393 , H03F3/217 , H03F3/187 , H03G3/30
CPC分类号： H03F3/393 , H03F3/187 , H03F3/2171 , H03G3/301 , H03F2200/03 , H03F2200/351 , H03F2200/381 , H03F2200/387
摘要： In a signal path comprising an analog path portion configured to operate in a plurality of output impedance modes including a high impedance mode with a first impedance and a low impedance mode with a second impedance, and a digital path portion having a variable digital gain and configured to convert a digital input signal and into an analog signal provided to the analog path portion, a method may include responsive to a condition for switching between the high impedance mode and the low impedance mode or vice versa, transitioning the output impedance continuously or in a series of steps between the first impedance and the second impedance or vice versa and, contemporaneously with transitioning the output impedance, transitioning the variable digital gain continuously or in a series of steps such to maintain a substantially constant overall path gain for the signal path remains substantially constant during transition.

10. 发明授权

US10530303B2 Multi-phase power converter system using multiple amplifier integrated circuits 有权
公开(公告)号：US10530303B2
公开(公告)日：2020-01-07
申请号：US15582861
申请日：2017-05-01
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Jeffrey Allen May , Eric J. King , Firas Azrai
IPC分类号： H03F1/02 , H03F3/187 , H02M3/158
摘要： 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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