公开(公告)号：US20150303246A1

公开(公告)日：2015-10-22

申请号：US14297008

申请日：2014-06-05

Applicant: Cirrus Logic, Inc.

Inventor： Zhonghai Shi ,  Vince Deems ,  Hong Tian

IPC: H01L49/02 ,  H01L21/02 ,  H01L21/3205 ,  H01L29/06 ,  H01L21/762

CPC classification number: H01L21/32055 ,  H01L21/76224 ,  H01L21/763 ,  H01L27/0802 ,  H01L28/20 ,  H01L29/0649

Abstract: In accordance with embodiments of the present disclosure, an integrated circuit may include at least one region of shallow-trench isolation field oxide, at least one region of dummy diffusion, and a polycrystalline semiconductor resistor. The at least one region of shallow-trench isolation field oxide may be formed on a semiconductor substrate. The at least one region of dummy diffusion may be formed adjacent to the at least one region of shallow-trench isolation field oxide on the semiconductor substrate. The polycrystalline semiconductor resistor may comprise at least one resistor arm formed with a polycrystalline semiconductor material, wherein the at least one resistor arm is formed over each of the at least one region of shallow-trench isolation field oxide and the at least one region of dummy diffusion.

Abstract translation: 根据本公开的实施例，集成电路可以包括浅沟槽隔离场氧化物的至少一个区域，至少一个虚拟扩散区域和多晶半导体电阻器。 浅沟槽隔离场氧化物的至少一个区域可以形成在半导体衬底上。 可以在半导体衬底上的浅沟槽隔离场氧化物的至少一个区域附近形成虚拟扩散的至少一个区域。 多晶半导体电阻器可以包括形成有多晶半导体材料的至少一个电阻臂，其中至少一个电阻臂形成在浅沟槽隔离场氧化物的至少一个区域中的每一个上，并且虚拟的至少一个区域 扩散。

公开(公告)号：US20150303171A1

公开(公告)日：2015-10-22

申请号：US14690763

申请日：2015-04-20

Applicant: Cirrus Logic, Inc.

Inventor： David T. Patten ,  Jason Hwang ,  Joseph Martin Gabriel, III

IPC: H01L23/00 ,  H01L21/683

CPC classification number: H01L24/97 ,  H01L21/6835 ,  H01L21/6836 ,  H01L24/83 ,  H01L2221/68318 ,  H01L2224/83005

Abstract: In accordance with embodiments of the present disclosure, a method may include providing a substrate adapted for use in wafer processing equipment, wherein the substrate includes an adhesive applied thereto. The method may also include reconstituting a plurality of device packages onto the substrate. In accordance with these and other embodiments of the present disclosure, an apparatus may include a substrate adapted for use in wafer processing equipment, an adhesive applied to the substrate, and a plurality of device packages reconstituted onto the substrate.

Abstract translation: 根据本公开的实施例，方法可以包括提供适于在晶片加工设备中使用的基板，其中所述基板包括施加到其上的粘合剂。 该方法还可以包括将多个器件封装复原到衬底上。 根据本公开的这些和其他实施例，装置可以包括适用于晶片处理设备的基板，施加到基板的粘合剂以及重构到基板上的多个器件封装。

公开(公告)号：US09167664B2

公开(公告)日：2015-10-20

申请号：US13798926

申请日：2013-03-13

Applicant: Cirrus Logic, Inc.

Inventor： Yanhui Xie ,  Eric Jerome King ,  John L. Melanson ,  Michael A. Kost

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B37/02 ,  H05B33/0803 ,  H05B33/0809 ,  H05B33/0815 ,  H05B33/0845 ,  Y02B20/383

Abstract: In accordance with these and other embodiments of the present disclosure, a system and method for providing compatibility between a load and a secondary winding of an electronic transformer driven by a trailing-edge dimmer may include predicting based on an electronic transformer secondary signal an estimated occurrence of a high-resistance state of the trailing-edge dimmer, wherein the high-resistance state occurs when the trailing-edge dimmer begins phase-cutting an alternating current voltage signal and operating the load in a high-current mode for a period of time immediately prior to the estimated occurrence of the high-resistance state.

Abstract translation: 根据本公开的这些和其他实施例，用于提供由后沿调光器驱动的电子变压器的负载和次级绕组之间的兼容性的系统和方法可以包括基于电子变压器次级信号预测估计出现 的后缘调光器的高电阻状态，其中当后沿调光器开始相位切割交流电压信号并且以高电流模式操作负载一段时间时，发生高电阻状态 紧接在估计出现高电阻状态之前。

公开(公告)号：US20150295584A1

公开(公告)日：2015-10-15

申请号：US14680830

申请日：2015-04-07

Applicant: Cirrus Logic, Inc.

Inventor： Tejasvi Das ,  John L. Melanson ,  John C. Tucker ,  Xiaofan Fei

IPC: H03M1/00 ,  H03M1/70 ,  H03M1/66 ,  H03M1/08 ,  H03M1/78

CPC classification number: H03M1/002 ,  H03M1/0845 ,  H03M1/66 ,  H03M1/662 ,  H03M1/68 ,  H03M1/70 ,  H03M1/785 ,  H03M3/32 ,  H03M3/392 ,  H03M3/414 ,  H03M3/416 ,  H03M3/50

Abstract: In accordance with embodiments of the present disclosure, a processing system may include a plurality of processing paths including a first processing path and a second processing path, a digital-to-analog stage output, and a controller. The first processing path may include a first digital-to-analog converter for converting the digital input signal into a first intermediate analog signal, the first digital-to-analog converter configured to operate in a high-power state and a low-power state. The second processing path may include a second digital-to-analog converter for converting a digital input signal into a second intermediate analog signal. The digital-to-analog stage output may be configured to generate an analog signal comprising a sum of the first intermediate analog signal and the second intermediate analog signal. The controller may be configured to operate the first digital-to-analog converter in the lower-power state when a magnitude of the digital input signal is below a threshold magnitude.

Abstract translation: 根据本公开的实施例，处理系统可以包括多个处理路径，包括第一处理路径和第二处理路径，数模转换阶段输出和控制器。 第一处理路径可以包括用于将数字输入信号转换成第一中间模拟信号的第一数模转换器，第一数模转换器被配置为在大功率状态和低功率状态 。 第二处理路径可以包括用于将数字输入信号转换成第二中间模拟信号的第二数模转换器。 数模转换级输出可以被配置为产生包括第一中间模拟信号和第二中间模拟信号之和的模拟信号。 控制器可以被配置为当数字输入信号的幅度低于阈值幅度时，在较低功率状态下操作第一数模转换器。

公开(公告)号：US20150269926A1

公开(公告)日：2015-09-24

申请号：US14734321

申请日：2015-06-09

Applicant: Cirrus Logic, Inc.

Inventor： Jeffrey Alderson ,  Jon D. Hendrix ,  Dayong Zhou ,  Antonio John Miller ,  Chin Yong ,  Gautham Devendra Kamath

IPC: G10K11/178

CPC classification number: G10K11/178 ,  G10K11/16 ,  G10K2210/00 ,  G10K2210/108 ,  G10K2210/3014 ,  G10K2210/3017 ,  G10K2210/3028 ,  G10K2210/30391 ,  G10L2021/02165 ,  H04B3/237

Abstract: A personal audio device, such as a wireless telephone, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone is also provided proximate to the speaker to provide an error signal indicative of the effectiveness of the noise cancellation. A secondary path estimating adaptive filter is used to estimate the electro-acoustical path from the noise canceling circuit through the transducer so that source audio can be removed from the error signal. A level of the source audio with respect to the ambient audio is determined to determine whether the system may generate erroneous anti-noise and/or become unstable.

Abstract translation: 诸如无线电话的个人音频设备包括自适应噪声消除（ANC）电路，其自适应地从参考麦克风信号产生抗噪声信号，并将抗噪声信号注入扬声器或其他换能器输出以引起取消 的环境音频声音。 还提供了靠近扬声器的误差麦克风以提供指示噪声消除的有效性的误差信号。 二次路径估计自适应滤波器用于估计通过换能器的噪声消除电路的电声路径，从而可以从误差信号中去除源音频。 确定相对于环境音频的源音频的电平以确定系统是否可能产生错误的抗噪声和/或变得不稳定。

公开(公告)号：US20150256953A1

公开(公告)日：2015-09-10

申请号：US14200458

申请日：2014-03-07

Applicant: Cirrus Logic, Inc.

Inventor： Nitin Kwatra ,  John L. Melanson

IPC: H04R29/00 ,  H04R3/00 ,  H04R1/10

CPC classification number: H04R1/1083 ,  H04R5/04 ,  H04R2410/05 ,  H04R2460/01 ,  H04R2499/11

Abstract: Based on transducer status input signals indicative of whether headphones housing respective transducers are engaged with ears of a listener, a processing circuit may determine whether the headphones are engaged with respective ears of the listener. Responsive to determining that at least one of the headphones is not engaged with its respective ear, the processing circuit may modify at least one of a first output signal to the first transducer and a second output signal to the second transducer such that at least one of the first output signal and the second output signal is different than such signal would be if the headphones were engaged with their respective ears.

Abstract translation: 基于换能器状态输入信号，指示耳机是否包含各个换能器与收听者的耳朵接合，处理电路可以确定耳机是否与收听者的相应耳朵接合。 响应于确定耳机中的至少一个不与其相应的耳朵接合，处理电路可以将第一输出信号中的至少一个修改为第一换能器，并将第二输出信号修改为第二换能器，使得至少一个 第一输出信号和第二输出信号不同于这样的信号，如果耳机与它们各自的耳朵接合。

公开(公告)号：US20150222235A1

公开(公告)日：2015-08-06

申请号：US14612889

申请日：2015-02-03

Applicant: Cirrus Logic, Inc.

Inventor： Eric Swanson ,  John L. Melanson ,  John C. Tucker ,  Eric J. King

IPC: H03F1/02 ,  H03F3/217 ,  H04R1/00 ,  H03F3/185

CPC classification number: H02M3/1582 ,  H02M3/1588 ,  H03F1/0227 ,  H03F3/181 ,  H03F3/217

Abstract: 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.

公开(公告)号：US20150222185A1

公开(公告)日：2015-08-06

申请号：US14612946

申请日：2015-02-03

Applicant: Cirrus Logic, Inc.

Inventor： Eric J. King ,  John L. Melanson

IPC: H02M3/158

CPC classification number: H02M3/1582 ,  H02M3/1588 ,  H03F1/0227 ,  H03F3/181 ,  H03F3/217

Abstract: 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.

公开(公告)号：US20150216002A1

公开(公告)日：2015-07-30

申请号：US14166211

申请日：2014-01-28

Applicant: Cirrus Logic, Inc.

Inventor： John L. Melanson ,  Eric J. King

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0845 ,  H05B33/0803 ,  H05B33/0809 ,  H05B33/0815 ,  H05B37/02 ,  H05B39/04

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09072125B2

公开(公告)日：2015-06-30

申请号：US13799329

申请日：2013-03-13

Applicant: Cirrus Logic, Inc.

Inventor： Eric Jerome King ,  John L. Melanson

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B37/02 ,  H05B33/0803 ,  H05B33/0809 ,  H05B33/0815 ,  H05B33/0845 ,  Y02B20/383

Abstract: An apparatus may include a controller to provide compatibility between a load and a secondary winding of a transformer driven at its primary winding by a dimmer, wherein the controller is configured to: determine from a transformer secondary signal whether the transformer comprises a magnetic transformer or an electronic transformer; and select a compatibility mode of operation from a plurality of modes of operation based on the determination of whether the transformer comprises a magnetic transformer or an electronic transformer. A method for providing compatibility between a load and a secondary winding of a transformer driven at its primary winding by a dimmer may include determining from a transformer secondary signal whether the transformer comprises a magnetic transformer or an electronic transformer and selecting a compatibility mode of operation from a plurality of modes of operation based on the determination of whether the transformer comprises a magnetic transformer or an electronic transformer.

Abstract translation: 一种装置可以包括控制器，以通过调光器提供在其初级绕组上驱动的变压器的负载和次级绕组之间的兼容性，其中所述控制器被配置为：从变压器次级信号确定变压器是否包括磁变压器或 电子变压器; 并且基于对变压器是否包括磁变压器或电子变压器的确定，从多种操作模式中选择兼容性操作模式。 用于通过调光器提供在其初级绕组上驱动的变压器的负载和次级绕组之间的兼容性的方法可以包括从变压器次级信号确定变压器是否包括磁变压器或电子变压器，并且选择兼容性操作模式 基于确定变压器是否包括磁变压器或电子变压器的多种操作模式。