公开(公告)号：US08437154B2

公开(公告)日：2013-05-07

申请号：US13404972

申请日：2012-02-24

Applicant: Stefan Bäurle ,  Zhao-Jun Wang

Inventor： Stefan Bäurle ,  Zhao-Jun Wang

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/335 ,  H02M2001/0022

Abstract: An example power supply controller includes a switch duty cycle controller coupled to receive a feedback signal and a duty cycle adjust signal. The switch duty cycle controller is coupled to generate a drive signal coupled to control switching of a switch, which is coupled to an energy transfer element, to regulate energy delivered from an input of a power supply to an output of the power supply. The power supply controller also includes a gain selector circuit coupled to receive an input voltage signal, which is representative of an input voltage to the power supply, to generate the duty cycle adjust signal received by the switch duty cycle controller. The duty cycle of the drive signal to be varied in response to a plurality of linear functions over a range of values of the input voltage signal.

Abstract translation: 示例性电源控制器包括耦合以接收反馈信号和占空比调整信号的开关占空比控制器。 开关占空比控制器被耦合以产生耦合以控制耦合到能量传递元件的开关的切换的驱动信号，以调节从电源的输入到电源的输出的能量。 电源控制器还包括一个增益选择器电路，其被耦合以接收表示到电源的输入电压的输入电压信号，以产生由开关占空比控制器接收的占空比调整信号。 驱动信号的占空比响应于输入电压信号的值的范围上的多个线性函数而变化。

公开(公告)号：US08305063B2

公开(公告)日：2012-11-06

申请号：US12550268

申请日：2009-08-28

Applicant: Zhao-Jun Wang ,  Giao M. Pham

Inventor： Zhao-Jun Wang ,  Giao M. Pham

IPC: G05F1/56

CPC classification number: H02M3/156 ,  H02M1/4225 ,  Y02B70/126

Abstract: An example controller for a power supply includes a drive signal generator and a compensation circuit. The drive signal generator is to be coupled to control switching of a switch included in the power supply to regulate an output voltage of the power supply in response to a sensed output voltage such that the output voltage of the power supply is greater than an input voltage of the power supply. The compensation circuit is coupled to the drive signal generator and is also coupled to output an offset current to adjust the sensed output voltage in response to the input voltage of the power supply.

Abstract translation: 用于电源的示例性控制器包括驱动信号发生器和补偿电路。 驱动信号发生器将被耦合以控制包括在电源中的开关的切换，以响应于感测的输出电压来调节电源的输出电压，使得电源的输出电压大于输入电压 的电源。 补偿电路耦合到驱动信号发生器，并且还耦合以输出偏移电流，以响应于电源的输入电压来调节感测的输出电压。

公开(公告)号：US08243480B2

公开(公告)日：2012-08-14

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: H02H7/122

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：US20110089986A1

公开(公告)日：2011-04-21

申请号：US12976316

申请日：2010-12-22

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: H03K7/08

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：US07746119B2

公开(公告)日：2010-06-29

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：US07554315B2

公开(公告)日：2009-06-30

申请号：US12135087

申请日：2008-06-06

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: G05F3/16 ,  G05F1/10

CPC classification number: G05F3/262

Abstract: 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: 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电流分配器。 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。

公开(公告)号：US20130215656A1

公开(公告)日：2013-08-22

申请号：US13399741

申请日：2012-02-17

Applicant: Zhao-Jun Wang ,  Giao Minh Pham

Inventor： Zhao-Jun Wang ,  Giao Minh Pham

IPC: H02M7/06 ,  H03K5/22

CPC classification number: H02M7/06 ,  H02M1/08 ,  H02M3/158 ,  H03K5/24

Abstract: A latching comparator includes a switching logic circuit coupled to receive a latching signal, a first signal and a second signal. An output circuit having an input terminal is coupled to the switching logic circuit. The input terminal of the output circuit is coupled to receive both the first and second signals through the switching logic circuit in response to the latching signal being in a first state. The input terminal of the output circuit is coupled to receive only one of the first and second signals through the switching logic circuit in response to a signal representative of an output terminal of the output circuit and in response to the latching signal being in a second state.

Abstract translation: 闭锁比较器包括耦合以接收锁存信号的开关逻辑电路，第一信号和第二信号。 具有输入端的输出电路耦合到开关逻辑电路。 响应于锁存信号处于第一状态，输出电路的输入端被耦合以通过开关逻辑电路接收第一和第二信号。 输出电路的输入端子被耦合以响应于表示输出电路的输出端子的信号并且响应于锁存信号处于第二状态而通过开关逻辑电路仅接收第一和第二信号中的一个信号 。

公开(公告)号：US20120280734A1

公开(公告)日：2012-11-08

申请号：US13548070

申请日：2012-07-12

Applicant: Zhao-Jun Wang

Inventor： Zhao-Jun Wang

IPC: H03K3/017

CPC classification number: H02M3/07 ,  H03K7/08

Abstract: An integrated control circuit according to aspects of the present invention includes an oscillator, a capacitor, and a logic gate. The oscillator generates a periodic timing signal that cycles between a first logic state for a first time duration and a second logic state for a second time duration. The capacitor receives a charge current in response to the periodic timing signal transitioning to the first logic state, where a voltage on the capacitor increases for the first time duration to an initial value. The logic gate generates a periodic output signal having a duty ratio that is responsive to a time that it takes the capacitor to discharge from the initial value to a reference voltage. A period of the periodic output signal is the period of the periodic timing signal.

Abstract translation: 根据本发明的方面的集成控制电路包括振荡器，电容器和逻辑门。 振荡器产生周期性定时信号，其在第一持续时间的第一逻辑状态和第二持续时间的第二逻辑状态之间循环。 电容器响应于周期性定时信号转换到第一逻辑状态而接收充电电流，其中电容器上的电压在第一持续时间内增加到初始值。 逻辑门产生具有占空比的周期性输出信号，占空比响应于电容器从初始值放电到参考电压的时间。 周期性输出信号的周期是周期性定时信号的周期。

公开(公告)号：US20120280666A1

公开(公告)日：2012-11-08

申请号：US13553730

申请日：2012-07-19

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

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

IPC: G05F1/10

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

Abstract: A method, in a power supply controller, of responding to an increase in current through a terminal of the power supply controller, is disclosed. The method includes regulating the terminal to a first voltage level and sensing a magnitude of a first current through the terminal while the controller is regulating the terminal to the first voltage level. The method also includes providing an initial response by the power supply controller in response to the magnitude of the first current exceeding a first threshold current level and then regulating the terminal to a second voltage level after the magnitude of the first current exceeds the first threshold current level. The magnitude of a second current through the terminal is sensed while the controller is regulating the terminal to the second voltage level and the controller determines a final response based on the magnitude of the second current.

Abstract translation: 公开了一种在电源控制器中响应于通过电源控制器的端子的电流增加的方法。 该方法包括：当控制器将端子调节到第一电压电平时，将端子调节到第一电压电平并感测通过端子的第一电流的幅度。 该方法还包括响应于超过第一阈值电流电平的第一电流的幅度提供电源控制器的初始响应，然后在第一电流的幅度超过第一阈值电流之后将端子调节到第二电压电平 水平。 当控制器将端子调节到第二电压电平时，感测通过端子的第二电流的大小，并且控制器基于第二电流的大小来确定最终响应。

公开(公告)号：US08004864B2

公开(公告)日：2011-08-23

申请号：US12497366

申请日：2009-07-02

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 includes a controller and a detection circuit. The controller includes a sense terminal coupled to provide a sense terminal current representative of an input voltage of the power supply during normal operation. The detection circuit is external to the controller and is coupled to the sense terminal. The detection circuit includes a Zener diode coupled to conduct a current to adjust the sense terminal current during a fault condition, where during the fault condition the controller is responsive to a measured impedance of the detection circuit which is determined in response to the sense terminal current.

Abstract translation: 示例性电源包括控制器和检测电路。 控制器包括感测端子，其耦合以在正常操作期间提供代表电源的输入电压的感测端子电流。 检测电路在控制器的外部，并耦合到检测端子。 检测电路包括齐纳二极管，其耦合以在故障状态期间传导电流以调整感测端子电流，其中在故障状态期间，控制器响应于检测电路的测量阻抗，其响应于感测端子电流而确定 。