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6 条记录 (耗时 0.017 秒)

    Three-terminal, low voltage pulse width modulation controller IC
    1.
    发明授权
    Three-terminal, low voltage pulse width modulation controller IC 失效
    三端，低电压脉宽调制控制器IC

    公开(公告)号：US06775164B2

    公开(公告)日：2004-08-10

    申请号：US10099661

    申请日：2002-03-14

    申请人： Chuck Wong ,  Paul W. Latham, II ,  Shawn Laliberte

    发明人： Chuck Wong ,  Paul W. Latham, II ,  Shawn Laliberte

    IPC分类号： H02M100

    CPC分类号： H02M1/36 ,  H02M3/156 ,  H02M3/335

    摘要： A three-terminal low-voltage PWM controller chip includes a first terminal for receiving operating bias current supply and a feedback control signal related to an output parameter of an electrical circuit to be controlled; a second terminal connected to an output switch providing digital width-modulated control pulses to control duty cycle of the electrical circuit; a third terminal ground connection; a clocked pulse width modulation circuit responsive to current flow between the second terminal and the third terminal and the feedback control value for controlling the digital output switch; and, feedback signal separation circuitry for separating the feedback control signal from the operating bias current supply. A start-up circuit is also provided.

    摘要翻译： 三端低电压PWM控制器芯片包括用于接收工作偏置电流源的第一端子和与要控制的电路的输出参数相关的反馈控制信号; 连接到输出开关的第二端子，提供数字宽度调制的控制脉冲以控制电路的占空比; 第三端接地连接; 响应于第二端子和第三端子之间的电流的时钟脉冲宽度调制电路和用于控制数字输出开关的反馈控制值; 以及用于将反馈控制信号与工作偏置电流源分离的反馈信号分离电路。 还提供启动电路。

    Cradle charger controller with below ground level biasing
    2.
    发明授权
    Cradle charger controller with below ground level biasing 失效
    底座充电器控制器低于地面偏置

    公开(公告)号：US07830115B2

    公开(公告)日：2010-11-09

    申请号：US11856513

    申请日：2007-09-17

    申请人： Chuck Wong

    发明人： Chuck Wong

    IPC分类号： H02J7/00 ,  H02J7/04 ,  H02J7/16

    CPC分类号： H01M10/44 ,  H01M10/46 ,  H02J7/025 ,  H02J7/045 ,  H02J50/12 ,  H02J50/40

    摘要： A cradle charging system comprises a charging cradle defining a space for a battery of an electronic device. Transformer charging circuitry for charging the battery in the electronic device includes a primary side circuitry for receiving a charging voltage. Secondary side circuitry inductively couples the charging voltage to the battery. The secondary side circuitry provides a controlled output signal based on either constant voltage control or constant current control responsive to a charge level of the battery.

    摘要翻译： 支架充电系统包括限定用于电子设备的电池的空间的充电座。 用于为电子设备中的电池充电的变压器充电电路包括用于接收充电电压的初级侧电路。 次级侧电路将充电电压感应耦合到电池。 次级侧电路基于电池的充电电平，基于恒定电压控制或恒定电流控制来提供受控的输出信号。

    Start-up circuit for flyback converter having secondary pulse width modulation
    3.
    发明授权
    Start-up circuit for flyback converter having secondary pulse width modulation 失效
    具有次脉冲宽度调制的反激式转换器的启动电路

    公开(公告)号：US06456511B1

    公开(公告)日：2002-09-24

    申请号：US09608459

    申请日：2000-06-29

    申请人： Chuck Wong

    发明人： Chuck Wong

    IPC分类号： H02M3335

    CPC分类号： H02M1/36 ,  H02M3/33523

    摘要： An output isolated, switching power supply has a transformer with a primary and two secondaries, an electronic switch in series with the primary, a first rectifier and filter on the first secondary to provide bias power during both startup and operating modes, and a second rectifier and filter on the second secondary to provide regulated output power. A resistor-capacitor network on the primary side provide an initial operating condition, such as a single control pulse, to the electronic switch which causes sufficient energy to be transferred through the first secondary to supply sufficient startup energy to operate a current control integrated circuit on the secondary side in a staged fashion. After the initial operating condition, the current control integrated circuit generates and applies a control signal to the electronic switch through an isolation circuit to cause the electronic switch to turn on and off in controlled fashion in order to deliver regulated power to the output of the supply. The low voltage, secondary side, current control integrated circuit provides a further aspect of the present invention.

    摘要翻译： 一个输出隔离的开关电源具有一个初级和两个二次变压器，一个与初级串联的电子开关，第一个次级的第一个整流器和滤波器，以在启动和运行模式下提供偏置功率;第二个整流器 并在第二个次级上进行滤波以提供稳定的输出功率。 初级侧的电阻 - 电容网络向电子开关提供诸如单个控制脉冲的初始操作条件，这导致足够的能量通过第一次级传递以提供足够的启动能量来操作电流控制集成电路 次要方式分阶段进行。 在初始操作状态之后，电流控制集成电路通过隔离电路产生控制信号并向电子开关施加控制信号，使得电子开关以受控的方式导通和断开，以便将调节的电力输送到电源的输出端 。 低压二次侧电流控制集成电路提供本发明的另一方面。

    USB charger using current limit
    4.
    发明授权
    USB charger using current limit 有权
    USB充电器使用电流限制

    公开(公告)号：US09166429B2

    公开(公告)日：2015-10-20

    申请号：US12428741

    申请日：2009-04-23

    申请人： Chuck Wong

    发明人： Chuck Wong

    IPC分类号： H02J7/00

    CPC分类号： H02J7/0052 ,  H02J7/0072 ,  H02J2007/0059 ,  H02J2007/0062

    摘要： A universal serial bus charger comprises a universal serial bus connector for providing a connection to a voltage source. An output voltage connector provides a charging voltage to a connected battery. A switching voltage regulator generates the charging voltage responsive to the voltage source. Control circuitry monitors an actual charging current applied to the connected battery and provides a programmed current signal enabling the actual charging current to operate at a programmed level if the actual charging current does not exceed a programmed charging current level. The control circuitry provides a charging current limit signal enabling the actual charging current to operate at a predetermined charge current limit if the actual charging current exceeds the programmed charging current level. PWM control circuitry generates switching control signals to control operation of the switching voltage regulator responsive to the control circuitry.

    摘要翻译： 通用串行总线充电器包括用于提供与电压源的连接的通用串行总线连接器。 输出电压连接器为连接的电池提供充电电压。 开关电压调节器响应于电压源产生充电电压。 控制电路监控施加到连接的电池的实际充电电流，并提供编程的电流信号，使得实际充电电流能够在编程电平下工作，如果实际充电电流不超过编程的充电电流电平。 如果实际充电电流超过编程的充电电流电平，则控制电路提供充电电流限制信号，使得实际充电电流能够以预定的充电电流限制工作。 PWM控制电路产生开关控制信号，以响应于控制电路来控制开关电压调节器的操作。

    USB CHARGER USING SENSOR-LESS CURRENT LIMIT
    5.
    发明申请
    USB CHARGER USING SENSOR-LESS CURRENT LIMIT 有权
    使用无传感器电流限制的USB充电器

    公开(公告)号：US20090295339A1

    公开(公告)日：2009-12-03

    申请号：US12428741

    申请日：2009-04-23

    申请人： Chuck Wong

    发明人： Chuck Wong

    IPC分类号： H02J7/04

    CPC分类号： H02J7/0052 ,  H02J7/0072 ,  H02J2007/0059 ,  H02J2007/0062

    摘要： A universal serial bus charger comprises a universal serial bus connector for providing a connection to a voltage source. An output voltage connector provides a charging voltage to a connected battery. A switching voltage regulator generates the charging voltage responsive to the voltage source. Control circuitry monitors an actual charging current applied to the connected battery and provides a programmed current signal enabling the actual charging current to operate at a programmed level if the actual charging current does not exceed a programmed charging current level. The control circuitry provides a charging current limit signal enabling the actual charging current to operate at a predetermined charge current limit if the actual charging current exceeds the programmed charging current level. PWM control circuitry generates switching control signals to control operation of the switching voltage regulator responsive to the control circuitry.

    摘要翻译： 通用串行总线充电器包括用于提供与电压源的连接的通用串行总线连接器。 输出电压连接器为连接的电池提供充电电压。 开关电压调节器响应于电压源产生充电电压。 控制电路监控施加到连接的电池的实际充电电流，并提供编程的电流信号，使得实际充电电流能够在编程电平下工作，如果实际充电电流不超过编程的充电电流电平。 如果实际充电电流超过编程的充电电流电平，则控制电路提供充电电流限制信号，使得实际充电电流能够以预定的充电电流限制工作。 PWM控制电路产生开关控制信号，以响应于控制电路来控制开关电压调节器的操作。