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121.发明授权Switching converter to operate in pulse width modulation mode or pulse skipping mode 有权开关转换器工作在脉宽调制模式或脉冲跳过模式公开(公告)号：US09423816B2
公开(公告)日：2016-08-23
申请号：US14531314
申请日：2014-11-03
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd
Inventor： Meng Wang , Xue Lian Zhou
IPC: G05F3/26
CPC classification number: G05F3/262 , H02M1/08 , H02M3/158 , H02M2001/0032 , Y02B70/16
Abstract: An electronic device may include a switching converter configured to convert an input voltage to an output voltage, and being selectively operable in a pulse skipping mode based upon a control signal. The switching converter may include a comparator having a first input configured to receive an error signal, a second input configured to receive a skipping mode reference signal, and an output configured to generate the control signal. A reference generator may be configured to generate the skipping mode reference signal as a function of a difference between the output voltage and the input voltage.
Abstract translation: 电子设备可以包括被配置为将输入电压转换为输出电压并且可以基于控制信号以脉冲跳过模式选择性地操作的开关转换器。 开关转换器可以包括具有被配置为接收错误信号的第一输入的比较器，被配置为接收跳过模式参考信号的第二输入和被配置为产生控制信号的输出。 参考发生器可以被配置为根据输出电压和输入电压之间的差产生跳跃模式参考信号。
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122.发明申请TWO-STAGE ERROR AMPLIFIER WITH NESTED-COMPENSATION FOR LDO WITH SINK AND SOURCE ABILITY 有权具有针对LDO的消除补偿的两级错误放大器，具有吸收和源极性公开(公告)号：US20160187902A1
公开(公告)日：2016-06-30
申请号：US14592040
申请日：2015-01-08
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd
Inventor： Ni Zeng
IPC: G05F1/575
CPC classification number: G05F1/575
Abstract: A low dropout amplifier may include an error amplifier having first and second inputs coupled to a reference signal and a feedback signal, respectively. The error amplifier may be configured to generate first and second error signals at first and second outputs, respectively, with the first and second error signals based upon a difference between the reference signal and the feedback signal. A sink stage may be coupled to the first output and configured to generate a sink current based upon the first error signal. A source stage may be coupled to the second output and configured to generate a source current based upon the second error signal. An output node may be coupled to receive the sink and source currents.
Abstract translation: 低压差放大器可以包括分别具有耦合到参考信号和反馈信号的第一和第二输入的误差放大器。 误差放大器可以被配置为基于参考信号和反馈信号之间的差异，分别在第一和第二输出处产生第一和第二误差信号，第一和第二误差信号。 宿台可以耦合到第一输出并且被配置为基于第一误差信号产生宿电流。 源级可以耦合到第二输出并被配置为基于第二误差信号产生源电流。 输出节点可以被耦合以接收信宿和源电流。
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123.发明授权Input clamping structure for sound quality improvement in car-radio class-AB power amplifier design 有权输入钳位结构，用于汽车无线电类AB功率放大器设计中的音质改善公开(公告)号：US09331644B2
公开(公告)日：2016-05-03
申请号：US14599701
申请日：2015-01-19
Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD
Inventor： Mei Yang , YueHua Wang , Xaut Zhang , Kelvin Wen , XiangSheng Li
CPC classification number: H03F3/211 , H03F3/187 , H03F3/26 , H03F3/4508 , H03F3/45475 , H03F3/68 , H03F2200/03 , H03F2203/21131 , H03F2203/45102 , H03F2203/45154 , H03F2203/45244 , H03F2203/45528 , H03F2203/45552
Abstract: A clamping circuit for a class AB amplifier includes a reference voltage circuit, four NPN Darlington transistors having inputs coupled to the reference voltage circuit, and outputs for providing four clamped voltages and a split NPN Darlington transistor having an input coupled to the reference voltage circuit, and four separate outputs for providing four AC ground voltages.
Abstract translation: 用于AB类放大器的钳位电路包括参考电压电路，具有耦合到参考电压电路的输入的四个NPN达林顿晶体管和用于提供四个钳位电压的输出和具有耦合到参考电压电路的输入的分立NPN达林顿晶体管， 和四个单独的输出，用于提供四个交流接地电压。
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公开(公告)号：US20160065148A1
公开(公告)日：2016-03-03
申请号：US14487313
申请日：2014-09-16
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd
Inventor： Qi Yu Liu , Ru Feng Du
CPC classification number: H03F1/523 , H03F3/183 , H03F3/185 , H03F3/211 , H03F3/2171 , H03F3/2173 , H03F3/45475 , H03F2200/03 , H03F2200/462 , H03F2200/78 , H03F2203/45512 , H03F2203/45528 , H03F2203/45594
Abstract: A class-D audio amplifier incorporates an overcurrent protection scheme implementing two overcurrent thresholds to avoid a dynamic impedance drop. When output current reaches the first threshold as a result of an impedance drop across the speaker, the overcurrent protection circuitry limits the output current to the value of the first threshold, but does not shut down the circuit. The second threshold is used to detect an overcurrent condition to shut down the circuit. Current limiting logic of a first channel monitors the overcurrent condition of a second channel and controls the first channel output in response thereto. This permits the second channel output current to reach the second threshold if the circuit is experiencing a short-circuit condition. This scheme also allows the output current to drop below the first threshold if the overcurrent condition of the second channel is caused by an impedance drop across the output speaker.
Abstract translation: D类音频放大器包含实现两个过流阈值的过流保护方案，以避免动态阻抗下降。 当输出电流由于扬声器上的阻抗降低而达到第一阈值时，过电流保护电路将输出电流限制在第一阈值的值，但不关闭电路。 第二个阈值用于检测过电流状态以关闭电路。 第一通道的电流限制逻辑监视第二通道的过电流状况并响应于此控制第一通道输出。 这允许第二通道输出电流达到第二阈值，如果电路正在经历短路状态。 如果第二通道的过电流状态是由输出扬声器上的阻抗下降引起的，则该方案还允许输出电流降至低于第一阈值。
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公开(公告)号：US20150381125A1
公开(公告)日：2015-12-31
申请号：US14613455
申请日：2015-02-04
Inventor： Kelvin Jian Wen , Mei Yang , Zheng Hua Song , Xian Xiong , Cristiano Meroni
CPC classification number: H03F3/187 , H03F3/45475 , H03F3/45941 , H03F2200/03 , H03F2200/441 , H03F2203/45138 , H03F2203/45418 , H03F2203/45424 , H03F2203/45528 , H03F2203/45541
Abstract: A power amplifier includes a clamping circuit configured to provide a clamped voltage from a power supply; an amplifier pair having first inputs coupled to the clamping circuit, second inputs and an output for providing an amplified signal; and a biasing circuit coupled between the clamping circuit and the second inputs. The biasing circuit is configured to adjust input bias voltages of the amplifier pair such that the bias voltage of the output of the amplifier pair varies proportionally to a change of the power supply.
Abstract translation: 功率放大器包括被配置为提供来自电源的钳位电压的钳位电路; 放大器对，其具有耦合到所述钳位电路的第一输入，第二输入和用于提供放大信号的输出; 以及耦合在所述钳位电路和所述第二输入之间的偏置电路。 偏置电路被配置为调整放大器对的输入偏置电压，使得放大器对的输出的偏置电压与电源的变化成比例地变化。
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Patent Agency Ranking
公开(公告)号：US20150228359A1
公开(公告)日：2015-08-13
申请号：US14695110
申请日：2015-04-24
Inventor： Luca Molinari , Hong Wei Wang
Abstract: A failure diagnosis circuit includes a multiplexer and a controller. The multiplexer receives address signals, and selectively outputs one of the address signals to an addressable module in response to a selecting signal. The controller generates a first one of address signals and the selecting signal. A built-in self-test circuit generates the second address signal. The addressable module includes addressable components responsive to the address signal. The controller processes the output of the addressable module responsive to the address signal to make a failure diagnosis. The built-in self-test circuit performs signature analysis on the read out output of the addressable module.
Abstract translation: 故障诊断电路包括多路复用器和控制器。 多路复用器接收地址信号，并且响应于选择信号选择性地将一个地址信号输出到可寻址模块。 控制器产生第一个地址信号和选择信号。 内置的自检电路产生第二个地址信号。 可寻址模块包括响应于地址信号的可寻址组件。 控制器响应于地址信号处理可寻址模块的输出以进行故障诊断。 内置的自检电路对可寻址模块的读出输出执行签名分析。
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公开(公告)号：US09099978B2
公开(公告)日：2015-08-04
申请号：US13692789
申请日：2012-12-03
Inventor： XiangSheng Li , Cristiano Meroni , Mei Yang , XianFeng Xiong
CPC classification number: H03G3/348 , H03F1/52 , H03F3/183 , H03F3/21 , H03F2200/321 , H03F2200/375 , H03F2200/471 , H03F2200/78 , H03G11/00 , H04R1/00 , H04R3/007 , H04R2201/028 , H04R2499/13
Abstract: A method of operating a speaker system including a speaker coupled to an amplifier, and a dedicated digital speaker protection circuit includes turning on the amplifier in a mute mode, after a first delay period, issuing a play command to the amplifier to place the amplifier in a play mode, but without an input signal during a second delay period, and performing a speaker offset detection during the second delay period, wherein, if there is an offset, then the amplifier is forced back into the mute mode, and if there is no offset, then the amplifier is allowed to continue to operate in the play mode. The method also includes issuing a speaker protection control signal or command if an offset is detected.
Abstract translation: 一种操作包括耦合到放大器的扬声器的扬声器系统和专用数字扬声器保护电路的方法包括：在第一延迟周期之后，以静音模式接通放大器，向放大器发出放大指令以放大放大器 播放模式，但是在第二延迟时段期间没有输入信号，并且在第二延迟周期期间执行扬声器偏移检测，其中，如果存在偏移，则放大器被强制回到静音模式，并且如果存在 无偏移，则允许放大器在播放模式下继续工作。 如果检测到偏移，该方法还包括发出扬声器保护控制信号或命令。
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公开(公告)号：US09083872B2
公开(公告)日：2015-07-14
申请号：US14032607
申请日：2013-09-20
Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO., LTD.
Inventor： Jing-En Luan
IPC: H04N5/225
CPC classification number: H04N5/2254 , H04N5/2257
Abstract: An imaging device may include a housing, an image sensor IC in the housing, a lens adjacent the image sensor IC, and a cap over the lens and having an adhesive filling opening therein. The cap, the housing, and the lens may define an adhesive receiving cavity therein and in communication with the adhesive filling opening. The imaging device may also include adhesive material within the adhesive receiving cavity touching the cap, the housing, and the lens.
Abstract translation: 成像装置可以包括壳体，壳体中的图像传感器IC，与图像传感器IC相邻的透镜，以及透镜上方的盖，并且在其中具有粘合剂填充开口。 盖，壳体和透镜可以在其中限定粘合剂容纳腔并与粘合剂填充开口连通。 成像装置还可以包括粘合剂容纳腔内的接触盖，壳体和透镜的粘合剂材料。
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129.发明授权Operational transconductance amplifier with increased current sinking capability 有权具有增加电流吸收能力的工作跨导放大器公开(公告)号：US09030258B2
公开(公告)日：2015-05-12
申请号：US13875766
申请日：2013-05-02
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Yi Jun Duan
CPC classification number: H03F3/45179 , H02H9/043 , H03F3/45071 , H03F3/45183 , H03F2200/471 , H03F2203/45022 , H03F2203/45526 , H03F2203/45674
Abstract: An amplifier circuit includes an input terminal and an output terminal. A current sinking transistor includes a first conduction terminal coupled to the output terminal and a second conduction terminal coupled to a reference supply node. A voltage sensing circuit has a first input coupled to the input terminal and a second input coupled to the output terminal. An output of the voltage sensing circuit is coupled to the control terminal of the current sinking transistor. The voltage sensing circuit functions to sense a rise in the voltage at the output terminal which exceeds the voltage at the input terminal, and respond thereto by activating the current sinking transistor.
Abstract translation: 放大器电路包括输入端子和输出端子。 电流吸收晶体管包括耦合到输出端子的第一导电端子和耦合到参考电源节点的第二导电端子。 电压感测电路具有耦合到输入端的第一输入和耦合到输出端的第二输入。 电压感测电路的输出耦合到电流吸收晶体管的控制端。 电压感测电路用于感测输出端子处的电压上升超过输入端子处的电压，并通过激活电流吸收晶体管对其进行响应。
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130.发明授权System and method for controlling DCM-CCM oscillation in a current-controlled switching mode power supply converter 有权用于控制电流控制开关模式电源转换器中DCM-CCM振荡的系统和方法公开(公告)号：US09024597B2
公开(公告)日：2015-05-05
申请号：US13658995
申请日：2012-10-24
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Hai Bo Zhang , Jin Li , Yong Jun Wu
CPC classification number: H02M3/158 , H02M2001/0025 , H02M2001/0032 , Y02B70/16
Abstract: A constant-frequency current-mode-controlled boost converter circuit provides slope compensation of an inductor current, reduces reverse inductor current in light output load conditions, and reduces oscillation between a discontinuous current mode and a continuous current mode by enabling or disabling an inductor current threshold. The constant-frequency current-mode-controlled boost converter circuit is efficient and stable in light, medium, and heavy output load conditions.
Abstract translation: 恒流电流模式控制的升压转换器电路提供电感电流的斜率补偿，减少光输出负载条件下的反向电感电流，并通过启用或禁用电感电流减少不连续电流模式和连续电流模式之间的振荡 阈。 恒流电流模式控制升压转换器电路在轻，中，重输出负载条件下是高效稳定的。
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