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1. 发明授权

US09634566B2 Controlling the common mode voltage of a non-isolated buck-boost converter 有权
公开(公告)号：US09634566B2
公开(公告)日：2017-04-25
申请号：US14612946
申请日：2015-02-03
申请人： Cirrus Logic, Inc.
发明人： Eric J. King , John L. Melanson
IPC分类号： H02M3/158 , H03F1/02 , H03F3/185 , H03F3/217 , H04R1/00 , H03F3/181
CPC分类号： H02M3/1582 , H02M3/1588 , H03F1/0227 , H03F3/181 , H03F3/217
摘要： A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based at least on an input signal to the switching power stage, determine the differential output voltage to be driven at the load, and based on the differential output voltage to be driven at the load, apply a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage.

2. 发明授权

US09599977B1 Programmable system architecture for power controllers including thread execution responsive to power train event 有权
公开(公告)号：US09599977B1
公开(公告)日：2017-03-21
申请号：US14198076
申请日：2014-03-05
申请人： Cirrus Logic, Inc.
发明人： Jean C. Pina , John L. Melanson , Robert T. Grisamore , Eric J. King , Spencer Isaacson
IPC分类号： G05D3/12 , G05B19/042 , G05B19/05
CPC分类号： G05B19/054 , G05B19/0423 , G05B19/0428
摘要： A power train may have a power train input and a power train output, wherein the power train is configured to transfer electrical energy from the power train input to a load coupled to the power train output in conformity with one or more power train control signals. A scheduler may be configured to receive events from the power train and, responsive to each particular event, schedule execution of a thread of control instructions responsive to the particular event, wherein the thread is selected from a plurality of threads. A processor may be configured to execute the threads of control instructions scheduled by the scheduler, such that for each particular event the processor generates one or more power train control signals responsive to the particular event within a first switching cycle of receipt of the particular event or within a second switching cycle immediately subsequent to the first switching cycle.

3. 发明授权

US09240725B2 Coordinated dimmer compatibility functions 有权
公开(公告)号：US09240725B2
公开(公告)日：2016-01-19
申请号：US14102809
申请日：2013-12-11
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Eric J. King
IPC分类号： G05F1/00 , H02M3/335 , H02M1/36 , H05B33/08 , H02M1/00
CPC分类号： H02M7/06 , H02M1/36 , H02M3/33507 , H02M2001/0006 , H05B33/0815 , Y02B20/346 , Y10T307/352 , Y10T307/50
摘要： A system and method includes a controller that is configured to coordinate (i) a low impedance path for a dimmer current, (ii), control of switch mode power conversion and (iii) an inactive state to, for example, to allow a dimmer to function normally from cycle to cycle of an alternating current (AC) supply voltage. In at least one embodiment, the dimmer functions normally when the dimmer conducts at a correct phase angle indicated by a dimmer input setting and avoids prematurely resetting while conducting. In at least one embodiment, by coordinating functions (i), (ii), and (iii), the controller controls a power converter system that is compatible with a triac-based dimmer. In at least one embodiment, the controller coordinates functions (i), (ii), and (iii) in response to a particular dimming level indicated by a phase cut, rectified input voltage supplied to the power converter system.

4. 发明申请

US20150222235A1 SWITCHED MODE AMPLIFIER 审中-公开
公开(公告)号：US20150222235A1
公开(公告)日：2015-08-06
申请号：US14612889
申请日：2015-02-03
申请人： Cirrus Logic, Inc.
发明人： Eric Swanson , John L. Melanson , John C. Tucker , Eric J. King
IPC分类号： H03F1/02 , H03F3/217 , H04R1/00 , H03F3/185
CPC分类号： H02M3/1582 , H02M3/1588 , H03F1/0227 , H03F3/181 , H03F3/217
摘要： A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based on a measured parameter associated with the switching power stage, select a selected operational mode of the power converter from a plurality of operational modes, and sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer electrical energy from an input source of the power converter to the load in accordance with the selected operational mode.A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based at least on an input signal to the switching power stage, determine the differential output voltage to be driven at the load, and based on the differential output voltage to be driven at the load, apply a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage.A method may include sequentially applying a plurality of switch configurations in a power converter to selectively activate or deactivate each of the plurality of switches in order operate the power converter as a differential output buck converter, such that: during a charging phase of the power converter, the power inductor is coupled between (i) one of a first terminal of a power source and a second terminal of the power source and (ii) one of a first terminal of the output load and a second terminal of the output load; during a transfer phase of the power converter, at least one of the plurality of switches is activated in order to couple the power inductor between the first terminal of the output load and a second terminal of the output load; and the output voltage comprises a differential voltage between the first and second terminal of the output load.

5. 发明申请

US20150222185A1 SYSTEMS AND METHODS FOR CONTROLLING COMMON MODE VOLTAGE OF MULTI-MODE POWER CONVERTER 有权
公开(公告)号：US20150222185A1
公开(公告)日：2015-08-06
申请号：US14612946
申请日：2015-02-03
申请人： Cirrus Logic, Inc.
发明人： Eric J. King , John L. Melanson
IPC分类号： H02M3/158
CPC分类号： H02M3/1582 , H02M3/1588 , H03F1/0227 , H03F3/181 , H03F3/217
摘要： A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based on a measured parameter associated with the switching power stage, select a selected operational mode of the power converter from a plurality of operational modes, and sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer electrical energy from an input source of the power converter to the load in accordance with the selected operational mode.A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based at least on an input signal to the switching power stage, determine the differential output voltage to be driven at the load, and based on the differential output voltage to be driven at the load, apply a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage.A method may include sequentially applying a plurality of switch configurations in a power converter to selectively activate or deactivate each of the plurality of switches in order operate the power converter as a differential output buck converter, such that: during a charging phase of the power converter, the power inductor is coupled between (i) one of a first terminal of a power source and a second terminal of the power source and (ii) one of a first terminal of the output load and a second terminal of the output load; during a transfer phase of the power converter, at least one of the plurality of switches is activated in order to couple the power inductor between the first terminal of the output load and a second terminal of the output load; and the output voltage comprises a differential voltage between the first and second terminal of the output load.

6. 发明申请

US20150216002A1 LOW-COST LOW-POWER LIGHTING SYSTEM AND LAMP ASSEMBLY 有权
标题翻译：低成本低功率照明系统和灯组件
公开(公告)号：US20150216002A1
公开(公告)日：2015-07-30
申请号：US14166211
申请日：2014-01-28
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Eric J. King
IPC分类号： H05B33/08 , H05B37/02
CPC分类号： H05B33/0845 , H05B33/0803 , H05B33/0809 , H05B33/0815 , H05B37/02 , H05B39/04
摘要： In accordance with embodiments of the present disclosure, a method and apparatus may include receiving an input waveform from a dimmer, wherein the input waveform is periodic at a first frequency. The method and apparatus may also include generating an output waveform independent of a load coupled to the output waveform, wherein the output waveform is periodic at a second frequency substantially greater than the first frequency, wherein at least one of the second frequency and an amplitude of the output waveform is based on a phase-cut angle of the input waveform indicative of a control setting of the dimmer.
摘要翻译：根据本公开的实施例，方法和装置可以包括从调光器接收输入波形，其中输入波形是以第一频率周期性的。所述方法和装置还可以包括生成独立于耦合到输出波形的负载的输出波形，其中输出波形在基本上大于第一频率的第二频率周期性地，其中第二频率和幅度中的至少一个输出波形基于表示调光器的控制设置的输入波形的相位角。

7. 发明申请

US20140167652A1 SYSTEMS AND METHODS FOR CONTROLLING A POWER CONTROLLER 有权
标题翻译：控制功率控制器的系统和方法
公开(公告)号：US20140167652A1
公开(公告)日：2014-06-19
申请号：US13903632
申请日：2013-05-28
申请人： Cirrus Logic, Inc.
发明人： Eric J. King , Daniel J. Baker , John L. Melanson
IPC分类号： H05B33/08
CPC分类号： F21V23/02 , H05B33/0815
摘要： In accordance with systems and methods of the present disclosure, an apparatus may include a power converter and a controller. The controller may be configured to monitor a voltage at an input of the power converter, cause the power controller to transfer energy from the input to a load at a target current, decrease the target current responsive to determining that the voltage is less than or equal to an undervoltage threshold, and increase the target current responsive to determining that the voltage is greater than or equal to a maximum threshold voltage.
摘要翻译：根据本公开的系统和方法，装置可以包括功率转换器和控制器。控制器可以被配置为监视功率转换器的输入处的电压，使得功率控制器将能量从输入传递到目标电流的负载，响应于确定电压小于或等于响应于确定电压大于或等于最大阈值电压而增加目标电流。

8. 发明申请

US20140055055A1 POWER CONVERSION WITH CONTROLLED CAPACITANCE CHARGING INCLUDING ATTACH STATE CONTROL 有权
标题翻译：具有控制电容充电的功率转换，包括附加状态控制
公开(公告)号：US20140055055A1
公开(公告)日：2014-02-27
申请号：US13836423
申请日：2013-03-15
申请人： CIRRUS LOGIC, INC.
发明人： John L. Melanson , Eric J. King
IPC分类号： H02M3/335 , H05B33/08
CPC分类号： H02M3/335 , H05B33/0809 , H05B33/0815
摘要： An electronic system includes a controller that actively controls a rate of charging and discharging of an energy storage capacitor to maintain compatibility with a dimmer. The controller actively controls charging of a capacitor circuit in a switching power converter to a first voltage level across the capacitor circuit. The controller further allows the capacitor to discharge to obtain a second voltage level across the capacitor circuit. The second voltage level is sufficient to draw a current through a phase-cut dimmer to prevent the dimmer from prematurely resetting. The first voltage is sufficient to allow the capacitor to discharge to the second voltage level during each cycle of the line voltage.
摘要翻译：电子系统包括控制器，其主动地控制储能电容器的充电和放电速率以保持与调光器的兼容性。控制器主动控制开关功率转换器中的电容器电路对电容器电路两端的第一电压电平的充电。控制器还允许电容器放电以在电容器电路两端获得第二电压电平。第二电压电平足以通过相位切割调光器画出电流，以防止调光器过早复位。第一电压足以允许电容器在线路电压的每个周期期间放电到第二电压电平。

9. 发明授权

US10812024B2 System with multiple signal loops and switched mode converter 有权
公开(公告)号：US10812024B2
公开(公告)日：2020-10-20
申请号：US14706587
申请日：2015-05-07
申请人： Cirrus Logic, Inc.
发明人： Eric J. King , John L. Melanson , Siddharth Maru
IPC分类号： H03F1/08 , H02M3/158 , H03F3/217 , H03F1/02 , H03F3/181 , H02M7/00 , H02M7/48
摘要： In accordance with embodiments of the present disclosure, a system may include an impedance estimator configured to estimate an impedance of a load and generate a target current based at least on an input voltage and the impedance, a voltage feedback loop responsive to a difference between the input voltage and an output voltage of the load, and a current controller configured to, responsive to the voltage feedback loop, the impedance estimator, and the input voltage, generate an output current to the load.

10. 发明授权

US09577587B2 Switched mode amplifier with single-ended buck mode 有权
标题翻译：具有单端降压模式的开关模式放大器
公开(公告)号：US09577587B2
公开(公告)日：2017-02-21
申请号：US14706624
申请日：2015-05-07
申请人： Cirrus Logic, Inc.
发明人： Siddharth Maru , Eric J. King
IPC分类号： H03F1/08 , H03F3/217 , G05F1/575 , H02M3/158 , H03F1/02 , H03F3/181
CPC分类号： H03F1/083 , G05F1/575 , H02M3/158 , H03F1/0277 , H03F3/181 , H03F3/217 , H03F3/2178 , H03F2200/03 , H03F2200/372
摘要： A power converter may include a power inductor, a plurality of switches arranged to sequentially operate in a plurality of switch configurations, an output for producing the output voltage, wherein a first switch is coupled to a first output terminal of the output and a second switch is coupled to a second output terminal of the output, and a linear amplifier coupled to the output. The controller may be configured to, in a linear amplifier mode of the power stage, enable the linear amplifier to transfer electrical energy from an input source of the power stage to the load, and in at least one mode of the power stage other than the linear amplifier mode, sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer the electrical energy from the input source to the load.
摘要翻译：功率转换器可以包括功率电感器，多个开关，被布置成顺序地以多个开关配置工作，用于产生输出电压的输出，其中第一开关耦合到输出端的第一输出端，第二开关耦合到输出的第二输出端，以及耦合到输出的线性放大器。控制器可以被配置为在功率级的线性放大器模式中使得线性放大器能够将电能从功率级的输入源传输到负载，并且在功率级的至少一种模式中，除了线性放大器模式，顺序地从多个开关配置施加开关配置，以选择性地激活或去激活多个开关中的每一个，以将电能从输入源传输到负载。

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