公开(公告)号：US09204503B1

公开(公告)日：2015-12-01

申请号：US13933849

申请日：2013-07-02

Applicant: Cirrus Logic, Inc.

Inventor： Michael A. Kost

IPC: H05B37/02 ,  H05B37/00 ,  H05B33/08

CPC classification number: H05B33/0809 ,  H05B33/0815 ,  H05B33/0827

Abstract: In accordance with methods and systems of the present disclosure, an integrated circuit may include an output terminal and a switching circuit. The output terminal may supply charging current to a magnetic storage element for supplying energy to two or more lighting devices coupled to the magnetic storage element. The switching circuit may have an input coupled to an input power source and an output coupled to the output terminal for charging the magnetic storage element during charging intervals, wherein energy is supplied from the magnetic storage element to a first one of the lighting devices during flyback intervals following the charging intervals occurring during a first synchronization phase and to a second one of the lighting devices during flyback intervals following the charging intervals occurring during a second synchronization phase.

Abstract translation: 根据本公开的方法和系统，集成电路可以包括输出端子和开关电路。 输出端子可以向磁存储元件提供充电电流，以向耦合到磁存储元件的两个或更多个照明装置提供能量。 开关电路可以具有耦合到输入电源的输入和耦合到输出端的输出，用于在充电间隔期间对磁存储元件充电，其中在回扫期间能量从磁存储元件供应到第一个照明装置 在第一同步阶段期间发生的充电间隔之后的间隔，以及在第二同步阶段期间发生的充电间隔之后的反激间隔期间的照明装置中的第二个间隔。

公开(公告)号：US20150340956A1

公开(公告)日：2015-11-26

申请号：US14701946

申请日：2015-05-01

Applicant: Cirrus Logic, Inc.

Inventor： Yanhui Xie ,  Michael A. Kost ,  John L. Melanson ,  Zhaohui He ,  Chris M. Franklin

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H05B33/08 ,  H05B33/0815 ,  Y02B20/346

Abstract: A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the switching power converter utilizes a transformer to transfer energy from a primary-side of the transformer to a secondary-side of the transformer. In at least one embodiment, the switching power converter control parameters includes a secondary-side conduction time delay that represents a time delay between when the primary-side ceases conducting a primary-side current and the secondary-side begins to conduct a secondary-side current. In at least one embodiment, determining and accounting for this secondary-side conduction time delay increases the prediction accuracy of the secondary-side current value and accurate delivery of energy to a load when the controller does not directly sense the secondary-side current provided to the load.

Abstract translation: 配电系统包括开关电源转换器的控制器，以控制开关功率转换器并确定一个或多个开关功率转换器控制参数。 在至少一个实施例中，开关功率转换器利用变压器将能量从变压器的初级侧传递到变压器的次级侧。 在至少一个实施例中，开关功率转换器控制参数包括次级侧导通时间延迟，其表示在初级侧停止进行初级侧电流和次级侧之间的时间延迟开始进行二次侧 当前。 在至少一个实施例中，确定和计算该次级侧导通时间延迟增加了次级侧电流值的预测精度，并且当控制器不直接感测提供给 负载。

公开(公告)号：US20150338453A1

公开(公告)日：2015-11-26

申请号：US14720304

申请日：2015-05-22

Applicant: Cirrus Logic, Inc.

Inventor： Martin Joseph Gabriel, III ,  Jason Hwang

IPC: G01R31/26 ,  G01R1/073 ,  G01R31/02

CPC classification number: G01R31/26 ,  G01R1/073 ,  G01R31/02 ,  G01R31/2894

Abstract: Systems and methods for multi-site placement of singulated semiconductor devices are presented. The systems and methods for multi-site placement may facilitate multi-site testing of the singulated semiconductor devices. A method may include determining a quantity of singulated semiconductor devices to be arranged in a test configuration. The method may also include determining, using a data processing device, a test configuration in response to the quantity. In further embodiments, the method may include placing the singulated semiconductor devices in a test frame according to the test configuration.

Abstract translation: 提出了用于单位半导体器件的多位置放置的系统和方法。 用于多位置放置的系统和方法可以促进单个半导体器件的多位点测试。 一种方法可以包括确定要布置在测试配置中的单个半导体器件的数量。 该方法还可以包括响应于数量来确定使用数据处理设备的测试配置。 在另外的实施例中，该方法可以包括根据测试配置将分割的半导体器件放置在测试框架中。

公开(公告)号：US20150326126A1

公开(公告)日：2015-11-12

申请号：US14706656

申请日：2015-05-07

Applicant: Cirrus Logic, Inc.

Inventor： Siddharth Maru ,  Eric J. King

IPC: H02M3/158

CPC classification number: H03F1/083 ,  G05F1/575 ,  H02M3/158 ,  H03F1/0277 ,  H03F3/181 ,  H03F3/217 ,  H03F3/2178 ,  H03F2200/03 ,  H03F2200/372

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20150326125A1

公开(公告)日：2015-11-12

申请号：US14706587

申请日：2015-05-07

Applicant: Cirrus Logic, Inc.

Inventor： Eric J. King ,  John L. Melanson ,  Siddharth Maru

IPC: H02M3/158

CPC classification number: H03F1/083 ,  G05F1/575 ,  H02M3/158 ,  H03F1/0277 ,  H03F3/181 ,  H03F3/217 ,  H03F3/2178 ,  H03F2200/03 ,  H03F2200/372

Abstract: 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.

Abstract translation: 根据本公开的实施例，系统可以包括阻抗估计器，其被配置为基于至少基于输入电压和阻抗来估计负载的阻抗并产生目标电流，电压反馈环路响应于 输入电压和负载的输出电压;以及电流控制器，被配置为响应于电压反馈环路，阻抗估计器和输入电压，产生到负载的输出电流。

公开(公告)号：US09178444B2

公开(公告)日：2015-11-03

申请号：US13715914

申请日：2012-12-14

Applicant: Cirrus Logic, Inc.

Inventor： Siddharth Maru ,  Zhaohui He ,  Mohit Sood

IPC: H05B37/02 ,  H02M7/217 ,  H02M1/44 ,  H02M3/335 ,  H02M5/257 ,  H05B33/08 ,  H02M1/42 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M1/4258 ,  H02M1/44 ,  H02M3/33523 ,  H02M3/33561 ,  H02M3/33576 ,  H02M5/2576 ,  H02M7/217 ,  H02M2001/0006 ,  H02M2001/0048 ,  H05B33/0815 ,  H05B33/0845 ,  H05B37/02 ,  Y02B20/346 ,  Y02B20/347 ,  Y02B70/126 ,  Y02B70/1491

Abstract: In at least one embodiment, an electronic system and method includes a controller to control a switching power converter in at least two different modes of operation depending on whether the controller detects a dimmer or not and/or whether a load requests more power than either of the two operational modes can provide. In at least one embodiment, the controller detects whether a dimmer is phase cutting an input voltage to a switching power converter. The controller operates the switching power converter in a first mode if the dimmer is detected, and the controller operates the switching power converter in a second mode if the dimmer is not detected. The controller also transitions between operating the switching power converter in the first mode and the second mode if a status of detection of the dimmer changes.

Abstract translation: 在至少一个实施例中，电子系统和方法包括控制器，用于根据控制器是否检测到调光器和/或负载是否要求比任何一个调光器更多的功率来控制至少两种不同的操作模式的开关功率转换器 两种操作模式可以提供。 在至少一个实施例中，控制器检测调光器是否相位切割到开关功率转换器的输入电压。 如果检测到调光器，则控制器以第一模式操作开关功率转换器，并且如果未检测到调光器，则控制器在第二模式下操作开关功率转换器。 如果调光器的检测状态改变，则控制器还在第一模式中操作开关功率转换器和第二模式之间转换。

公开(公告)号：US09173027B2

公开(公告)日：2015-10-27

申请号：US13791461

申请日：2013-03-08

Applicant: Cirrus Logic, Inc.

Inventor： Jie Su

IPC: H04R3/00

CPC classification number: H04R3/007

Abstract: In accordance with embodiments of the present disclosure, systems and methods may include a controller configured to be coupled to an audio speaker, wherein the controller receives one or more signals indicative of one or more operating characteristics of the audio speaker and compares the one or more operating characteristics to one or more speaker protection thresholds, and based on the comparison, processes an audio input signal to generate an audio output signal communicated from the controller to the audio speaker, further wherein the one or more speaker protection thresholds are based on offline reliability testing of one or more audio speakers similar to the audio speaker and the controller generates one or more modeled parameters for the audio speaker and modifies the one or more speaker protection thresholds based on the one or more modeled parameters.

Abstract translation: 根据本公开的实施例，系统和方法可以包括被配置为耦合到音频扬声器的控制器，其中控制器接收指示音频扬声器的一个或多个操作特性的一个或多个信号，并将该一个或多个 对一个或多个扬声器保护阈值的操作特性，并且基于比较，处理音频输入信号以产生从控制器传送到音频扬声器的音频输出信号，其中，一个或多个扬声器保护阈值基于离线可靠性 类似于音频扬声器的一个或多个音频扬声器的测试和控制器产生用于音频扬声器的一个或多个建模参数，并且基于一个或多个建模的参数修改一个或多个扬声器保护阈值。

公开(公告)号：US20150303796A1

公开(公告)日：2015-10-22

申请号：US14495564

申请日：2014-09-24

Applicant: Cirrus Logic, Inc.

Inventor： Poornima Mazumdar ,  Mohit Sood ,  Rahul Singh ,  Sahil Singh

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M3/33507 ,  H02M2001/0054 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A controller may be configured to generate a control signal to activate and deactivate a switch of a switching power converter in order to control a switching period and a peak current of the switching power converter to maintain a regulated current of the switching power converter at a desired current level such that: if the switching period decreases below a minimum switching period, the controller increases the switching period by a ringing period of a voltage of the switch and increases the peak current to compensate for the increase of the switching period in order to maintain the regulated current, and if the peak current increases above a maximum peak current, the controller decreases the switching period by a ringing period of the voltage of the switch and decreases the peak current to compensate for the decrease of the switching period in order to maintain the regulated current.

Abstract translation: 控制器可以被配置为产生控制信号以激活和停用开关功率转换器的开关，以便控制开关功率转换器的开关周期和峰值电流，以将开关功率转换器的调节电流保持在期望的 电流电平使得：如果开关周期降低到最小开关周期以下，则控制器将开关周期增加开关电压的振铃周期，并增加峰值电流以补偿开关周期的增加以便维持 调节电流，并且如果峰值电流增加到最大峰值电流以上，则控制器将开关周期减小开关的电压的振铃周期，并降低峰值电流以补偿开关周期的减小以便维持 调节电流。

公开(公告)号：US20150271882A1

公开(公告)日：2015-09-24

申请号：US14220472

申请日：2014-03-20

Applicant: Cirrus Logic, Inc.

Inventor： John L. Melanson ,  Eric King ,  Rahul Singh

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0824 ,  H05B33/0827 ,  H05B33/083 ,  H05B33/0845 ,  H05B37/02 ,  H05B39/047 ,  H05B41/28 ,  H05B41/2827 ,  Y02B20/345 ,  Y02B20/346 ,  Y02B20/347

Abstract: An LED lighting device includes an auxiliary power supply that supplies power to a control circuit of the LED lighting device that receives an input from a terminal of a light-emitting diode (LED) string of the lighting device that has a substantially lower voltage than the line voltage to which the lighting device is connected. The terminal may be within the LED string, or may be an end of the string. A linear regulator may be operated from the voltage drop across a number of the LEDs in the string so that the energy wasted by the auxiliary power supply is minimized. In other designs, the auxiliary power supply may be intermittently connected in series with the LED string only when needed. The intermittent connection can be used to forward bias a portion of the LED string when the voltage supplied to the LED string is low, increasing overall brightness.

Abstract translation: LED照明装置包括辅助电源，其向LED照明装置的控制电路供电，所述控制电路接收来自所述照明装置的发光二极管（LED）串的端子的输入，所述发光二极管（LED） 照明装置所连接的线路电压。 终端可以在LED串内，或者可以是串的末端。 线性调节器可以从串中的多个LED上的电压降来操作，使得由辅助电源浪费的能量最小化。 在其他设计中，辅助电源可以仅在需要时与LED串串联连接。 当提供给LED串的电压低时，可以使用间歇连接来对LED串的一部分进行偏置，从而提高整体亮度。

公开(公告)号：US20150264762A1

公开(公告)日：2015-09-17

申请号：US14727995

申请日：2015-06-02

Applicant: Cirrus Logic, Inc.

Inventor： John L. Melanson ,  Eric J. King

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H02M1/4225 ,  H02M2001/0045 ,  H05B33/0842 ,  H05B41/245 ,  H05B41/2928 ,  H05B41/34 ,  Y02B20/346 ,  Y02B70/126

Abstract: A lighting system includes one or more methods and systems to control dissipation of excess power in the lighting system when the power into a switching power converter from a leading edge, phase-cut dimmer is greater than the power out of the switching power converter. In at least one embodiment, the lighting system includes a controller that controls dissipation of excess energy in the lighting system to prevent a premature disconnection of the phase-cut dimmer. In at least one embodiment, the controller actively controls power dissipation by generating one or more signals to actively and selectively control power dissipation in the lighting system. By actively and selectively controlling power dissipation in the lighting system, the controller intentionally dissipates power when the power into the lighting system should be greater than the power out to a lamp of the lighting system. In at least one embodiment, the controller creates one or more intermixed and/or interspersed power dissipation phases with one or more switching power converter charging and/or flyback phases.

Abstract translation: 照明系统包括一个或多个方法和系统，用于当来自前沿的切换调光器的功率大于开关功率转换器的功率时，控制照明系统中多余功率的耗散。 在至少一个实施例中，照明系统包括控制器，其控制照明系统中的多余能量的耗散以防止相位切割调光器的过早断开。 在至少一个实施例中，控制器通过产生一个或多个信号主动地和有选择地控制照明系统中的功率耗散来主动地控制功率耗散。 通过积极和选择性地控制照明系统中的功率消耗，当进入照明系统的电力应大于照明系统的灯的电力时，控制器有意地耗散功率。 在至少一个实施例中，控制器利用一个或多个开关功率转换器充电和/或反激阶段创建一个或多个混合和/或散置的功率耗散相位。