公开(公告)号：US20120112846A1

公开(公告)日：2012-05-10

申请号：US13350455

申请日：2012-01-13

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: H03K7/08

CPC classification number: H02M3/07 ,  H03K7/08

Abstract: An integrated control circuit according to aspects of the present invention includes a capacitor to develop a first current during a first time duration in response to a charge current and to develop a second voltage during a second time duration in response to a discharge current. A comparator is also included and is coupled to the capacitor to indicate when the voltage on the capacitor reaches the second voltage. A control logic sets a duty ratio of a periodic output signal in response to the time it takes the capacitor to discharge from the first voltage to the second voltage. An oscillator is coupled to provide a timing signal to the control logic. In one aspect, the control logic includes an output that is coupled to the oscillator to change a frequency of the oscillator.

Abstract translation: 根据本发明的方面的集成控制电路包括电容器，用于响应于充电电流在第一持续时间期间产生第一电流，并响应于放电电流在第二持续时间期间产生第二电压。 还包括比较器，并且耦合到电容器以指示电容器上的电压何时达到第二电压。 控制逻辑响应于电容器从第一电压放电到第二电压所花费的时间来设置周期性输出信号的占空比。 耦合振荡器以向控制逻辑提供定时信号。 在一个方面，控制逻辑包括耦合到振荡器以改变振荡器的频率的输出。

公开(公告)号：US08138810B2

公开(公告)日：2012-03-20

申请号：US12976316

申请日：2010-12-22

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: H03K3/017

CPC classification number: H02M3/07 ,  H03K7/08

Abstract: An apparatus and method of providing a pulse width modulated signal that is responsive to a current are disclosed. A circuit according to aspects of the present invention includes a capacitor to convert a first current to a first voltage on the capacitor during a first time duration and to discharge a second current from the capacitor to change the first voltage to a second voltage during a second time duration. A comparator is also included and is coupled to an output of the capacitor to compare a voltage on the capacitor to a reference voltage during the second time duration to change a pulse width of a periodic output signal in response to an input current.

Abstract translation: 公开了提供响应于电流的脉宽调制信号的装置和方法。 根据本发明的方面的电路包括电容器，用于在第一持续时间期间将第一电流转换为电容器上的第一电压，并且在第二时间期间将来自电容器的第二电流放电以将第一电压改变为第二电压 持续时间 还包括比较器，并且耦合到电容器的输出，以在第二持续时间期间将电容器上的电压与参考电压进行比较，以响应于输入电流改变周期性输出信号的脉冲宽度。

公开(公告)号：US20110299306A1

公开(公告)日：2011-12-08

申请号：US13213898

申请日：2011-08-19

Applicant: Zhao-Jun Wang ,  Stefan Bäurle ,  David Michael Hugh Matthews

Inventor： Zhao-Jun Wang ,  Stefan Bäurle ,  David Michael Hugh Matthews

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M1/32 ,  H02M3/33507

Abstract: An example power supply controller includes a regulation circuit, a current sense circuit, and a response circuit. The regulation circuit is coupled to regulate a sense terminal to a voltage level. The current sense circuit is coupled to the sense terminal to sense a current through the sense terminal a measurement delay period after a magnitude of the current through the sense terminal reaches a first threshold current level. The response circuit is coupled to the sense circuit and is responsive to the current through the sense terminal only after the measurement delay period.

Abstract translation: 示例性电源控制器包括调节电路，电流检测电路和响应电路。 调节电路被耦合以将感测端子调节到电压电平。 电流感测电路耦合到感测端子，以在通过感测端子的电流的大小达到第一阈值电流水平之后感测通过感测端子的电流测量延迟周期。 响应电路耦合到感测电路，并且仅在测量延迟周期之后才响应于通过感测端子的电流。

公开(公告)号：US20100066414A1

公开(公告)日：2010-03-18

申请号：US12233463

申请日：2008-09-18

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: G11C27/02

CPC classification number: G11C27/026

Abstract: A sample and hold circuit in one aspect includes first and second switches. The first switch can be coupled to receive an input signal and to sample the input signal using a first capacitor. A first leakage current flows between first and second conductive terminals of the first switch and accumulates as a first leakage charge in the first capacitor. A second leakage current flows between the first and second conductive terminals of the second switch and accumulates as a second leakage charge in the second capacitor. An offset circuit produces a compensated sampled value by subtracting a quantity from a signal developed in response to the held sampled signal and charge accumulated through the first switch, wherein the quantity is developed in response to the accumulated leakage charge in the second capacitor.

Abstract translation: 一个方面的采样和保持电路包括第一和第二开关。 第一开关可以被耦合以接收输入信号并且使用第一电容器对输入信号进行采样。 第一泄漏电流在第一开关的第一和第二导电端子之间流动，并在第一电容器中作为第一泄漏电荷积累。 第二漏电流在第二开关的第一和第二导电端子之间流动，并在第二电容器中作为第二泄漏电荷积累。 偏移电路通过从响应于保持的采样信号而产生的信号和通过第一开关累积的电荷减去量产生补偿采样值，其中响应于第二电容器中的累积泄漏电荷而产生量。

公开(公告)号：US07629823B2

公开(公告)日：2009-12-08

申请号：US11543503

申请日：2006-10-04

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: H03K3/017

CPC classification number: H02M3/07 ,  H03K7/08

Abstract: An apparatus and method of providing a pulse width modulated signal that is responsive to a current are disclosed. A circuit according to aspects of the present invention includes a capacitor to convert a first current to a first voltage on the capacitor during a first time duration and to discharge a second current from the capacitor to change the first voltage to a second voltage during a second time duration. A comparator is also included and is coupled to an output of the capacitor to compare a voltage on the capacitor to a reference voltage during the second time duration to change a pulse width of a periodic output signal in response to an input current.

Abstract translation: 公开了提供响应于电流的脉宽调制信号的装置和方法。 根据本发明的方面的电路包括电容器，用于在第一持续时间期间将第一电流转换为电容器上的第一电压，并且在第二时间期间将来自电容器的第二电流放电以将第一电压改变为第二电压 持续时间 还包括比较器，并且耦合到电容器的输出，以在第二持续时间期间将电容器上的电压与参考电压进行比较，以响应于输入电流改变周期性输出信号的脉冲宽度。

公开(公告)号：US07576528B2

公开(公告)日：2009-08-18

申请号：US11543506

申请日：2006-10-04

Applicant: Zhao-Jun Wang ,  Stefan Bäurle ,  David Michael Hugh Matthews

Inventor： Zhao-Jun Wang ,  Stefan Bäurle ,  David Michael Hugh Matthews

IPC: G05F1/00

CPC classification number: H02M3/33523 ,  H02M1/32 ,  H02M3/33507

Abstract: A power supply controller measuring impedance includes a sense circuit coupled to a sense terminal. A regulation circuit is coupled to the sense circuit and is also coupled to regulate the sense terminal to a first voltage level when a current flowing through the sense terminal is less than a first threshold current level. The regulation circuit is further coupled to regulate the sense terminal to a second voltage level when the current flowing through the sense terminal reaches the first threshold current level. A response circuit is coupled to the sense circuit and is responsive to the current flowing through the sense terminal when the sense terminal is regulated at the second voltage level.

Abstract translation: 测量阻抗的电源控制器包括耦合到感测端子的感测电路。 调节电路耦合到感测电路，并且还耦合以当流过感测端子的电流小于第一阈值电流电平时将感测端子调节到第一电压电平。 当流过感测端的电流达到第一阈值电流电平时，调节电路还被耦合以将感测端子调节到第二电压电平。 响应电路耦合到感测电路，并且当感测端子被调节在第二电压电平时响应于流过感测端子的电流。

公开(公告)号：US20090189682A1

公开(公告)日：2009-07-30

申请号：US12414473

申请日：2009-03-30

Applicant: Alex B. Djenguerian ,  William B. Smith ,  Kent Wong ,  Zhao-Jun Wang

Inventor： Alex B. Djenguerian ,  William B. Smith ,  Kent Wong ,  Zhao-Jun Wang

IPC: G05F1/10

CPC classification number: H03K19/1732 ,  Y10T307/858

Abstract: A method is disclosed to add functionality to a terminal of a high voltage integrated circuit without the penalty of additional high voltage circuitry. The benefit is that alternative modes of operation can be selected for testing, trimming parameters of the integrated circuit, or any other purpose without the cost of an additional terminal. In one embodiment, ordinary low voltage circuitry monitors the voltage on the terminal that normally is exposed to high voltage. The configuration of a simple voltage detector and an ordinary latch allows easy entry into the test and trimming mode when the integrated circuit is not in the intended application, but prohibits entry into the test and trimming mode when the integrated circuit operates in the intended application.

Abstract translation: 公开了一种方法来向高压集成电路的终端添加功能，而不会造成额外的高压电路的损失。 其优点在于可以选择替代的操作模式用于测试，整流电路的修整参数，或任何其他目的，而不需要额外的终端的成本。 在一个实施例中，普通的低压电路监控通常暴露于高电压的端子上的电压。 当集成电路不在预期应用中时，简单电压检测器和普通锁存器的配置允许容易地进入测试和修整模式，但是当集成电路在预期应用中工作时，禁止进入测试和修整模式。

公开(公告)号：US07535130B2

公开(公告)日：2009-05-19

申请号：US12119373

申请日：2008-05-12

Applicant: Alex B. Djenguerian ,  William B. Smith ,  Zhao-Jun Wang ,  Kent Wong

Inventor： Alex B. Djenguerian ,  William B. Smith ,  Zhao-Jun Wang ,  Kent Wong

IPC: H02B1/24 ,  H03K19/00

CPC classification number: H03K19/1732 ,  Y10T307/858

Abstract: A method is disclosed to add functionality to a terminal of a high voltage integrated circuit without the penalty of additional high voltage circuitry. The benefit is that alternative modes of operation can be selected for testing, trimming parameters of the integrated circuit, or any other purpose without the cost of an additional terminal. In one embodiment, ordinary low voltage circuitry monitors the voltage on the terminal that normally is exposed to high voltage. The configuration of a simple voltage detector and an ordinary latch allows easy entry into the test and trimming mode when the integrated circuit is not in the intended application, but prohibits entry into the test and trimming mode when the integrated circuit operates in the intended application.

Abstract translation: 公开了一种方法来向高压集成电路的终端添加功能，而不会造成额外的高压电路的损失。 其优点在于可以选择替代的操作模式用于测试，整流电路的修整参数，或任何其他目的，而不需要额外的终端的成本。 在一个实施例中，普通的低压电路监控通常暴露于高电压的端子上的电压。 当集成电路不在预期应用中时，简单电压检测器和普通锁存器的配置允许容易地进入测试和修整模式，但是当集成电路在预期应用中工作时，禁止进入测试和修整模式。

公开(公告)号：US20080024105A1

公开(公告)日：2008-01-31

申请号：US11493504

申请日：2006-07-25

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: G05F3/16

CPC classification number: G05F3/262

Abstract: Examples of a method and apparatus for adjusting a reference are disclosed. In one aspect of the invention, a circuit includes a current divider to divide a current from a current source into a first current and a reference current. The circuit also includes a current mirror coupled to the current divider to receive the first current from the current divider and to receive an adjustment current. The adjustment current is to set the reference current.

Abstract translation: 公开了用于调整参考的方法和装置的示例。 在本发明的一个方面中，电路包括用于将电流从电流源分成第一电流和参考电流的分流器。 该电路还包括耦合到电流分配器的电流镜，以从电流分配器接收第一电流并接收调整电流。 调整电流是设置参考电流。