公开(公告)号：US20160065066A1

公开(公告)日：2016-03-03

申请号：US14493436

申请日：2014-09-23

Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD

Inventor： Hai Bo Zhang ,  Sanford Li

IPC: H02M3/158 ,  H02M1/36

CPC classification number: H02M3/1588 ,  H02M1/36 ,  H02M3/158 ,  H03K17/04 ,  H03K17/162 ,  H03K2217/0054 ,  Y02B70/1466

Abstract: A first softstart signal indicates operation in a load phase for a boost rectifier and a second softstart signal indicates operation in a pulse drive phase which follows the load phase. A rectification transistor is actuated for the duration of the load phase in response to the first softstart circuit to generate a rising output voltage. The rectification transistor is further repeatedly actuated during the pulse drive phase in response to the second softstart circuit to generate a boosted output voltage. A first transistor coupled between a first conduction terminal and a body terminal of the rectification transistor is actuated, and a second transistor coupled between the body terminal and a second conduction terminal of the rectification transistor is deactuated, during the load phase. The first transistor is deactuated, and the second transistor is actuated, during the pulse drive phase.

Abstract translation: 第一软启动信号指示用于升压整流器的负载阶段的操作，并且第二软启动信号指示在跟随负载阶段的脉冲驱动阶段中的操作。 响应于第一软启动电路，整流晶体管在负载阶段的持续时间内被致动以产生上升的输出电压。 响应于第二软启动电路，在脉冲驱动阶段期间，整流晶体管进一步被重新启动以产生升压的输出电压。 耦合在整流晶体管的第一导电端子和体电极端子之间的第一晶体管被致动，并且耦合在整流晶体管的主体端子和第二导通端子之间的第二晶体管在负载阶段期间被去激活。 在脉冲驱动阶段期间，第一晶体管被去激活，并且第二晶体管被致动。

公开(公告)号：US20160062384A1

公开(公告)日：2016-03-03

申请号：US14504494

申请日：2014-10-02

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Meng Wang ,  Xue Lian Zhou

IPC: G05F3/26 ,  H05B33/08

CPC classification number: G05F3/262 ,  H03M1/745 ,  H05B33/0809 ,  H05B33/0815

Abstract: A current source circuit is configured to receive a reference current at the input circuit path of a current mirror circuit. The current mirror circuit mirrors the reference current and generates mirror currents at a number of output circuit paths. A corresponding number of control transistors are connected in series with the output circuit paths. Each control transistor is selectively actuated in response to a control signal. A decoder circuit is configured to receive a variable control signal and generate actuation signals in response thereto to selective actuate the control transistors to pass the mirror current to an output node. At the output node, the passed mirror currents are summed to generate a variable output current. The variable current is monotonically modulated in response to the variable control signal.

Abstract translation: 电流源电路被配置为在电流镜电路的输入电路路径处接收参考电流。 电流镜电路反映参考电流并在多个输出电路路径上产生镜像电流。 相应数量的控制晶体管与输出电路路径串联连接。 每个控制晶体管响应于控制信号被选择性地致动。 解码器电路被配置为接收可变控制信号并响应于此产生致动信号以选择性地致动控制晶体管以将镜电流传递到输出节点。 在输出节点，将通过的镜像电流相加以产生可变输出电流。 可变电流响应于可变控制信号被单调调制。

公开(公告)号：US09276530B1

公开(公告)日：2016-03-01

申请号：US14487313

申请日：2014-09-16

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Qi Yu Liu ,  Ru Feng Du

IPC: H03F3/217 ,  H03F1/52 ,  H02H3/08 ,  H03F3/183

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。

公开(公告)号：US20150183637A1

公开(公告)日：2015-07-02

申请号：US14587324

申请日：2014-12-31

Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO., LTD.

Inventor： Jing-En LUAN

IPC: B81B7/00 ,  B81C1/00

CPC classification number: B81C1/0023 ,  B81B7/007 ,  H01L24/97 ,  H01L2224/32145 ,  H01L2224/48095 ,  H01L2224/48145 ,  H01L2224/73265 ,  H01L2924/181 ,  H01L2924/00012 ,  H01L2924/00

Abstract: An electronic device may include first and second laterally spaced apart interconnect substrates defining a slotted opening, and a first IC in the slotted opening and electrically coupled to one or more of the first and second interconnect substrates. The electronic device may include a first other IC over the first IC and electrically coupled to one or more of the first and second interconnect substrates, and encapsulation material over the first and second interconnect substrates, the first IC, and the first other IC.

Abstract translation: 电子设备可以包括限定开槽开口的第一和第二横向间隔开的互连基板，以及开槽开口中的第一IC，并且电耦合到第一和第二互连基板中的一个或多个。 电子器件可以包括位于第一IC上的第一其它IC，并且电耦合到第一和第二互连衬底中的一个或多个，以及在第一和第二互连衬底，第一IC和第一其他IC上的封装材料。

公开(公告)号：US09019026B2

公开(公告)日：2015-04-28

申请号：US14073198

申请日：2013-11-06

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Hong Wu Lin

IPC: H03K3/023 ,  H03K3/0231

CPC classification number: H03K3/0231

Abstract: An oscillator module includes a first MOS transistor and a capacitor. The capacitor is coupled between a gate and source of the first MOS transistor. The drain of the first MOS transistor receives a first bias current and generates an oscillating output signal. A switching circuit operates in response to the oscillating output signal to selective charge and discharge the capacitor. A current sourcing circuit is configured to generate the bias current. The current sourcing circuit includes a second MOS transistor which has an identical layout to the first MOS transistor and receives a second bias current. A resistor is coupled between a gate and source of the second MOS transistor. The current sourcing circuit further includes a current mirror having an input configured to receive a reference current passing through the resistor and generate the first and second bias currents.

Abstract translation: 振荡器模块包括第一MOS晶体管和电容器。 电容器耦合在第一MOS晶体管的栅极和源极之间。 第一MOS晶体管的漏极接收第一偏置电流并产生振荡输出信号。 开关电路响应于振荡输出信号而工作以对电容器进行选择性充电和放电。 电流源电路被配置为产生偏置电流。 电流源电路包括与第一MOS晶体管具有相同布局并接收第二偏置电流的第二MOS晶体管。 电阻器耦合在第二MOS晶体管的栅极和源极之间。 电流源电路还包括电流镜，其具有被配置为接收通过电阻器的参考电流并产生第一和第二偏置电流的输入。

公开(公告)号：US08988117B2

公开(公告)日：2015-03-24

申请号：US14310865

申请日：2014-06-20

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Lin Li

IPC: H03K3/00 ,  H03K19/003 ,  G01R31/26

CPC classification number: H03K19/00361 ,  G01R31/2621

Abstract: A high side driver circuit includes a driver stage having an input, an output, a first power terminal and a second power terminal, a transistor having a first power terminal, a second power terminal, and a control terminal coupled to the output of the driver stage, and a switch coupled between the second power terminal of the driver stage and the second power terminal of the transistor.

Abstract translation: 高侧驱动器电路包括具有输入端，输出端，第一电源端子和第二电源端子的驱动级，具有第一电源端子，第二电源端子和耦合到驱动器的输出端的控制端子的晶体管 并且耦合在驱动器级的第二电源端子和晶体管的第二电源端子之间的开关。

公开(公告)号：US20150042229A1

公开(公告)日：2015-02-12

申请号：US14454867

申请日：2014-08-08

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Yi Jun Duan ,  Tao Tao Huang

IPC: H05B33/08

CPC classification number: H05B33/0851 ,  H03F3/45215 ,  H03F2200/351 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0827 ,  H05B33/0887 ,  Y02B20/341 ,  Y02B20/347

Abstract: A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during operation. The driving current source module is controlled based on a detection result of a voltage on the node.

Abstract translation: 配置为驱动发光装置的驱动装置包括可操作以在操作期间经由节点向发光装置提供电流的驱动电流源模块。 耦合到节点的保护模块和驱动电流源模块在操作期间选择性地向节点注入电流。 基于节点上的电压的检测结果来控制驱动电流源模块。

公开(公告)号：US20140327419A1

公开(公告)日：2014-11-06

申请号：US14267957

申请日：2014-05-02

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Ni Zeng

IPC: G05F1/573

CPC classification number: G05F1/573

Abstract: A current limiting circuit includes a current sensing module that is configured to sense an output current of a power transistor and to generate a corresponding sensing current which is proportional to the output current. A first current limiting module coupled to the current sensing module is configured to generate a first limiting current based on the sensing current when a variation of the output current of the power transistor exceeds a first current level. A second current limiting module coupled to the current sensing module is configured to generate a second limiting current based on the sensing current when a variation of the output current of the power transistor exceeds a second current level. A converting module coupled to the first and second current limiting modules and the power transistor controls a gate voltage of the power transistor based at least on the first and second limiting currents.

Abstract translation: 电流限制电路包括电流感测模块，其被配置为感测功率晶体管的输出电流并产生与输出电流成比例的相应感测电流。 耦合到电流感测模块的第一限流模块被配置为当功率晶体管的输出电流的变化超过第一电流电平时，基于感测电流产生第一极限电流。 耦合到电流感测模块的第二限流模块被配置为当功率晶体管的输出电流的变化超过第二电流电平时，基于感测电流产生第二极限电流。 耦合到第一和第二限流模块的转换模块和功率晶体管至少基于第一和第二限制电流来控制功率晶体管的栅极电压。

公开(公告)号：US20130169610A1

公开(公告)日：2013-07-04

申请号：US13648826

申请日：2012-10-10

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Tao Tao Huang ,  Meng Wang

IPC: G09G5/00 ,  H03K3/00

CPC classification number: G09G3/36 ,  G09G3/3696

Abstract: A driving circuit includes a controller, a converter and a feedback module. The controller receives an input supply at a supply node, and generates a control signal according to the input supply. The converter receive an input signal at an input node and a control signal at a control node, and is configured to convert the input signal to a driving signal in response to the control signal. The driving signal of the converter is feedback by the feedback module to the controller. The input supply is generated from the input signal or the feedback driving signal. The drive circuit may drive a display device.

Abstract translation: 驱动电路包括控制器，转换器和反馈模块。 控制器在供电节点处接收输入电源，并根据输入电源产生控制信号。 转换器在输入节点处接收输入信号并在控制节点接收控制信号，并且被配置为响应于控制信号将输入信号转换成驱动信号。 转换器的驱动信号由反馈模块反馈给控制器。 输入电源由输入信号或反馈驱动信号产生。 驱动电路可以驱动显示装置。

公开(公告)号：US20210172983A1

公开(公告)日：2021-06-10

申请号：US16746444

申请日：2020-01-17

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Dino COSTANZO ,  Cheng Pan CAI ,  Xi Yu XU

IPC: G01R19/25 ,  G01R15/14 ,  H02P27/08 ,  H02M1/00 ,  H02M7/5387

Abstract: A three-phase load is powered by a PWM (e.g., SVPWM) driven DC-AC inverter having a single shunt-topology. A shunt voltage and a branch voltage of the inverter (across a transistor to be calibrated) are measured during a second period of each SVPWM sector, and the drain-to-source resistance of the calibrated transistor is calculated. During the fourth period of each SVPWM sector, the branch voltage is measured again, and another branch voltage across another transistor is measured. Using the drain-to-source resistance of the calibrated transistor and the voltage across the calibrated transistor measured during the fourth period, the phase current through the calibrated transistor is calculated. Using the other branch voltage measured during the fourth period and the drain-to-source resistance of its corresponding transistor (known from a prior SVPWM sector), the phase current through that transistor is calculated. From the two calculated phase currents, the other phase current can be calculated.