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    • 2. 发明授权
    • Method and apparatus for programming a power converter controller with an external programming terminal having multiple functions
    • 用于具有多个功能的外部编程终端对功率转换器控制器进行编程的方法和装置
    • US08630103B2
    • 2014-01-14
    • US13161092
    • 2011-06-15
    • Stefan BäurleGuangchao Darson ZhangMingming Mao
    • Stefan BäurleGuangchao Darson ZhangMingming Mao
    • H02M3/335
    • H02M3/33515H02M3/33507H02M2001/0025
    • A power converter controller is disclosed. An example controller includes a control circuit coupled to receive a feedback signal representative of an output of the power converter. The control circuit coupled to control a switching of a power switch of the power converter in response to the feedback signal to control a transfer of energy from an input of the power converter to the output of the power converter. An internal programming interface circuit is coupled to the control circuit. A coupling switcher is coupled to the internal programming interface circuit. An external programming terminal is selectively coupled to the internal programming interface circuit through the coupling switcher. An external programming circuit coupled to the external programming terminal is coupled to the internal programming interface circuit through the coupling switcher during a startup programming condition and during a fault condition of the power converter. The external programming circuit that is coupled to the external programming terminal is decoupled from the internal programming interface circuit by the coupling switcher during a normal operating condition of the power converter.
    • 公开了一种电力转换器控制器。 示例性控制器包括耦合以接收表示功率转换器的输出的反馈信号的控制电路。 控制电路被耦合以响应于反馈信号来控制功率转换器的功率开关的切换,以控制从功率转换器的输入到功率转换器的输出的能量传递。 内部编程接口电路耦合到控制电路。 耦合切换器耦合到内部编程接口电路。 外部编程终端通过耦合切换器选择性地耦合到内部编程接口电路。 耦合到外部编程终端的外部编程电路在启动编程状态期间和在功率转换器的故障状态期间通过耦合切换器耦合到内部编程接口电路。 耦合到外部编程终端的外部编程电路在功率转换器的正常工作状态期间通过耦合切换器与内部编程接口电路分离。
    • 6. 发明授权
    • Method and apparatus for a control circuit responsive to an impedance coupled to a control circuit terminal
    • 用于响应耦合到控制电路端子的阻抗的控制电路的方法和装置
    • US08582327B2
    • 2013-11-12
    • US13553730
    • 2012-07-19
    • Zhao-Jun WangStefan BäurleDavid Michael Hugh Matthews
    • Zhao-Jun WangStefan BäurleDavid Michael Hugh Matthews
    • H02M3/335
    • H02M3/33523H02M1/32H02M3/33507
    • 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.
    • 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。
    • 7. 发明申请
    • VARIABLE FREQUENCY TIMING CIRCUIT FOR A POWER SUPPLY CONTROL CIRCUIT
    • 用于电源控制电路的可变频率时序电路
    • US20130027996A1
    • 2013-01-31
    • US13193434
    • 2011-07-28
    • Stefan BäurleGuangchao Darson ZhangArthur B. OdellEdward Deng
    • Stefan BäurleGuangchao Darson ZhangArthur B. OdellEdward Deng
    • H02M1/00
    • H02M3/33515H02M3/156H02M3/33507
    • An example integrated circuit controller includes a pulse width modulation (PWM) circuit and a timing circuit. The PWM circuit controls a switch to regulate an output of a power supply in response to a switch current flowing through the switch and in response to a clock signal having a switching period. The timing circuit provides the clock signal and includes a timing capacitor where the switching period of the clock signal is equal to a charging time that the timing capacitor charges to an upper reference voltage plus a discharging time that the timing capacitor discharges to a lower reference voltage. The timing circuit increases the charging time of the timing capacitor by decreasing a rate at which the timing capacitor is charged to increase the switching period of the clock signal if an on time of the switch is greater than or equal to a threshold time.
    • 示例性集成电路控制器包括脉宽调制(PWM)电路和定时电路。 PWM电路控制开关以响应于流过开关的开关电流并且响应于具有开关周期的时钟信号来调节电源的输出。 定时电路提供时钟信号,并且包括定时电容器,其中时钟信号的开关周期等于定时电容器充电到较高参考电压加上定时电容器放电到较低参考电压的放电时间的充电时间 。 如果开关的接通时间大于或等于阈值时间,则定时电路通过降低定时电容器被充电的速率来增加定时电容器的充电时间,以增加时钟信号的开关周期。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR A POWER SUPPLY CONTROLLER RESPONSIVE TO A FEEDFORWARD SIGNAL
    • 一种电源控制器响应信号的方法和装置
    • US20120163041A1
    • 2012-06-28
    • US13404972
    • 2012-02-24
    • Stefan BäurleZhao-Jun Wang
    • Stefan BäurleZhao-Jun Wang
    • H02M3/335
    • H02M3/33507H02M3/335H02M2001/0022
    • 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.
    • 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。
    • 10. 发明授权
    • Method and apparatus to limit output power in a switching power supply
    • 限制开关电源中的输出功率的方法和装置
    • US08143875B2
    • 2012-03-27
    • US13180227
    • 2011-07-11
    • Alex B. DjenguerianStefan BäurleKent Wong
    • Alex B. DjenguerianStefan BäurleKent Wong
    • G05F1/575H02H7/122
    • H02M3/33507H02M1/32
    • An example integrated circuit controller for a power supply includes a modulator, a drive signal generator, a comparator, and a variable current limit generator. The modulator generates an enable signal having logic states responsive to a feedback signal. The drive signal generator either enables or skips enabling a switch of the power supply during a switching period in response to the logic state of the enable signal. The comparator asserts an over current signal to disable the switch if current flowing through the switch exceeds a variable current limit. The variable current limit generator sets the variable current limit to a first current limit in response to one logic state of the enable signal during a switching period and sets the variable current limit to a second current limit if the enable signal transitions logic states and the over current signal is asserted during the switching period.
    • 用于电源的示例集成电路控制器包括调制器,驱动信号发生器,比较器和可变电流限制发生器。 调制器产生具有响应于反馈信号的逻辑状态的使能信号。 驱动信号发生器响应于使能信号的逻辑状态,在切换周期期间启用或跳过使能电源的开关。 如果流过开关的电流超过可变电流限制,比较器将断开过电流信号以禁用开关。 可变电流限制发生器在开关周期期间响应于使能信号的一个逻辑状态将可变电流限制设置为第一电流限制,并且如果使能信号转换逻辑状态并将过流限制设置为第二电流限制,则将可变电流限制设置为第二电流限制 电流信号在开关周期内被断言。