公开(公告)号：US09836075B2

公开(公告)日：2017-12-05

申请号：US14521536

申请日：2014-10-23

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

Inventor： Min Chen ,  Wen Liu ,  Hong Xia Li

IPC: G05F1/00 ,  G05F5/00 ,  G05F3/20

CPC classification number: G05F5/00 ,  G05F3/205

Abstract: A voltage detector operates to detect a system power supply voltage and generate a trigger signal. A control signal generator responds to the trigger signal and generates a control signal. A DC bias generator responds to the control signal by generating a DC bias. The control signal controls the DC bias to have a first value when the power supply voltage is a first voltage and have a second value when the power supply voltage is a second voltage different from the first voltage, wherein the first value is different from the second value. A dynamic DC bias is generated which can not only support a larger voltage scope, but also significantly improves signal to noise ratio. The system power supply detection may concern stop/start operation of an automobile engine.

公开(公告)号：US09667138B2

公开(公告)日：2017-05-30

申请号：US14825267

申请日：2015-08-13

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

Inventor： Min Chen ,  Wen Liu

IPC: H02M3/08 ,  G05F3/20 ,  G05F3/24

CPC classification number: H02M3/08 ,  G05F3/205 ,  G05F3/242 ,  H03K17/302 ,  H03K2217/0018

Abstract: An electronic device includes a transistor having a body and a body biasing circuit. The body biasing circuit includes a threshold estimator circuit to estimate a threshold voltage of the transistor and a comparison circuit to compare the threshold voltage of the transistor to a reference threshold voltage and to generate a comparison signal based thereupon. A bias adjust circuit generates a body biasing voltage that biases the body of the transistor as a function of the comparison signal, the body biasing voltage being a voltage that, when applied to the body of the transistor, adjusts the threshold voltage thereof to be equal to the reference threshold voltage.

公开(公告)号：US09312849B2

公开(公告)日：2016-04-12

申请号：US14310952

申请日：2014-06-20

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

Inventor： Min Chen ,  Wen Liu ,  HongXia Li ,  XiaoWu Dai

IPC: H03K17/16

CPC classification number: H03K17/167 ,  H03K17/163 ,  H03K17/164 ,  H03K17/166

Abstract: A switching circuit includes a first input stage having an input for receiving a first input signal, an output, and a power terminal for receiving an increasing analog current, a second input stage having an input for receiving a second input signal, an output, and a power terminal for receiving a decreasing analog current, and an output node coupled to the outputs of the first input stage and the second input stage for providing a switched output signal. An output stage is coupled between the first and second input stages and the output node. The first and second input stages are operational amplifiers.

Abstract translation: 开关电路包括：第一输入级，具有用于接收第一输入信号的输入端，输出端和用于接收增加的模拟电流的电源端;第二输入级，具有用于接收第二输入信号的输入端，输出端，以及 用于接收减小的模拟电流的电源端子，以及耦合到第一输入级和第二输入级的输出的输出节点，用于提供开关输出信号。 输出级耦合在第一和第二输入级与输出节点之间。 第一和第二输入级是运算放大器。

公开(公告)号：US08779801B2

公开(公告)日：2014-07-15

申请号：US13692702

申请日：2012-12-03

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

Inventor： Min Chen ,  Wen Liu ,  HongXia Li ,  XiaoWu Dai

IPC: G01R19/00

CPC classification number: H03K17/167 ,  H03K17/163 ,  H03K17/164 ,  H03K17/166

Abstract: A switching circuit includes a first input stage having an input for receiving a first input signal, an output, and a power terminal for receiving an increasing analog current, a second input stage having an input for receiving a second input signal, an output, and a power terminal for receiving a decreasing analog current, and an output node coupled to the outputs of the first input stage and the second input stage for providing a switched output signal. An output stage is coupled between the first and second input stages and the output node. The first and second input stages are operational amplifiers.

Abstract translation: 开关电路包括：第一输入级，具有用于接收第一输入信号的输入端，输出端和用于接收增加的模拟电流的电源端;第二输入级，具有用于接收第二输入信号的输入端，输出端，以及 用于接收减小的模拟电流的电源端子，以及耦合到第一输入级和第二输入级的输出的输出节点，用于提供开关输出信号。 输出级耦合在第一和第二输入级与输出节点之间。 第一和第二输入级是运算放大器。

公开(公告)号：US20170040889A1

公开(公告)日：2017-02-09

申请号：US14825267

申请日：2015-08-13

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

Inventor： Min Chen ,  Wen Liu

IPC: H02M3/08

CPC classification number: H02M3/08 ,  G05F3/205 ,  G05F3/242 ,  H03K17/302 ,  H03K2217/0018

Abstract: An electronic device includes a transistor having a body and a body biasing circuit. The body biasing circuit includes a threshold estimator circuit to estimate a threshold voltage of the transistor and a comparison circuit to compare the threshold voltage of the transistor to a reference threshold voltage and to generate a comparison signal based thereupon. A bias adjust circuit generates a body biasing voltage that biases the body of the transistor as a function of the comparison signal, the body biasing voltage being a voltage that, when applied to the body of the transistor, adjusts the threshold voltage thereof to be equal to the reference threshold voltage.

Abstract translation: 电子设备包括具有主体和主体偏置电路的晶体管。 身体偏置电路包括用于估计晶体管的阈值电压的阈值估计器电路和用于将晶体管的阈值电压与参考阈值电压进行比较的比较电路，并且基于此产生比较信号。 偏置调节电路产生作为比较信号的函数来偏置晶体管本体的主体偏置电压，主体偏置电压是当施加到晶体管的主体时将其阈值电压调整为相等的电压 到参考阈值电压。

公开(公告)号：US20150115927A1

公开(公告)日：2015-04-30

申请号：US14521536

申请日：2014-10-23

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

Inventor： Min Chen ,  Wen Liu ,  Hong Xia Li

IPC: G05F5/00

CPC classification number: G05F5/00 ,  G05F3/205

Abstract: A voltage detector operates to detect a system power supply voltage and generate a trigger signal. A control signal generator responds to the trigger signal and generates a control signal. A DC bias generator responds to the control signal by generating a DC bias. The control signal controls the DC bias to have a first value when the power supply voltage is a first voltage and have a second value when the power supply voltage is a second voltage different from the first voltage, wherein the first value is different from the second value. A dynamic DC bias is generated which can not only support a larger voltage scope, but also significantly improves signal to noise ratio. The system power supply detection may concern stop/start operation of an automobile engine.

Abstract translation: 电压检测器用于检测系统电源电压并产生触发信号。 控制信号发生器响应触发信号并产生控制信号。 DC偏置发生器通过产生DC偏压来响应控制信号。 当电源电压为第一电压时，控制信号控制DC偏压具有第一值，当电源电压是与第一电压不同的第二电压时，控制信号具有第二值，其中第一值不同于第二电压 值。 产生动态直流偏置，不仅可以支持更大的电压范围，而且可以显着提高信噪比。 系统电源检测可能涉及汽车发动机的停止/起动操作。