METHOD AND APPARATUS FOR CONDITIONAL RESPONSE TO A FAULT CONDITION IN A SWITCHING POWER SUPPLY
    1.
    发明申请
    METHOD AND APPARATUS FOR CONDITIONAL RESPONSE TO A FAULT CONDITION IN A SWITCHING POWER SUPPLY 失效
    开关电源故障状态条件响应的方法与装置

    公开(公告)号:US20080259653A1

    公开(公告)日:2008-10-23

    申请号:US12145291

    申请日:2008-06-24

    IPC分类号: H02M3/335

    CPC分类号: H02M1/32 H02M3/33507

    摘要: Techniques are disclosed to regulate an output of a power converter. One example power converter controller circuit includes a line sense input to be coupled to receive a signal representative of an input voltage of a power converter. A feedback input to be coupled to receive a feedback signal representative of an output of the power converter is also included. A drive signal generator is also included to generate a drive signal coupled to control switching of a switch to provide a regulated output parameter at the output of the power converter in response to the feedback signal. The drive signal generator is coupled to receive a plurality of inputs including the line sense input and the feedback input. The drive signal generator is coupled to latch the power converter into an off state in response to a detection of a fault condition in the power converter as detected by the plurality of inputs if the power converter input voltage is above a first threshold level. The drive signal generator to be unresponsive to the signal representative of the power converter input voltage while the controller is regulating the output parameter at the output of the power converter.

    摘要翻译: 公开了调节功率转换器的输出的技术。 一个示例性功率转换器控制器电路包括要耦合以接收表示功率转换器的输入电压的信号的线路感测输入。 还包括要耦合以接收表示功率转换器的输出的反馈信号的反馈输入。 还包括驱动信号发生器以产生耦合以控制开关的开关的驱动信号,以响应于反馈信号在功率转换器的输出处提供稳定的输出参数。 驱动信号发生器被耦合以接收包括线路感测输入和反馈输入的多个输入。 如果功率转换器输入电压高于第一阈值电平,则驱动信号发生器被耦合以响应于由多个输入检测到的功率转换器中的故障状况的检测,将功率转换器锁存到断开状态。 在控制器调节功率转换器输出端的输出参数时,驱动信号发生器对代表功率转换器输入电压的信号无响应。

    Method for reducing the cost of voltage regulation circuitry in switch mode power supplies
    3.
    发明申请
    Method for reducing the cost of voltage regulation circuitry in switch mode power supplies 失效
    降低开关电源电压调节电路成本的方法

    公开(公告)号:US20060119328A1

    公开(公告)日:2006-06-08

    申请号:US11336728

    申请日:2006-01-20

    IPC分类号: G05F1/613 G05F3/16

    摘要: A reduced cost voltage regulation circuit for switched mode power supplies. In one example, a current sense circuit includes a current sense terminal of a voltage regulation circuit. A voltage difference between the current sense terminal and a voltage reference terminal of the voltage regulation circuit is substantially fixed when a first current to be sensed by the current sense circuit at the current sense terminal is substantially equal to a first current sense threshold. A power transistor is also included and is coupled to the current sense circuit and coupled between a power supply input terminal of the voltage regulation circuit and a power supply output terminal of the voltage regulation circuit. The power transistor is coupled to be switched in response to the first current to be sensed by the current sense circuit at the current sense terminal to control a transfer of energy from the input of the power supply to the output of the power supply to regulate an output voltage of the power supply.

    摘要翻译: 用于开关式电源的降低成本的电压调节电路。 在一个示例中,电流检测电路包括电压调节电路的电流检测端子。 当电流感测端子处的电流感测电路要感测的第一电流基本上等于第一电流检测阈值时,电流检测端子和电压调节电路的电压参考端子之间的电压差基本上是固定的。 还包括功率晶体管,并且耦合到电流感测电路并且耦合在电压调节电路的电源输入端子和电压调节电路的电源输出端子之间。 功率晶体管被耦合以响应于由电流感测端子处的电流感测电路感测的第一电流而被切换,以控制从电源的输入到电源的输出的能量传递,以调节 电源的输出电压。

    Method and apparatus for a control circuit with multiple operating modes
    4.
    发明授权
    Method and apparatus for a control circuit with multiple operating modes 有权
    具有多种工作模式的控制电路的方法和装置

    公开(公告)号:US08279627B2

    公开(公告)日:2012-10-02

    申请号:US13184349

    申请日:2011-07-15

    IPC分类号: H02M3/335

    CPC分类号: H02M3/33515 H02M3/33507

    摘要: An example controller for use in a power converter includes an oscillator and a logic circuit. The oscillator is to be coupled to a switch of the power converter and determines a switching cycle period of the switch. The logic circuit is also to be coupled to the switch to control a duty cycle of the switch in response to a magnitude of a feedback signal to regulate an output of the power converter. The logic circuit controls the duty cycle of the switch such that a control loop gain of the power converter is substantially constant during a transition of the controller between duty cycle control modes.

    摘要翻译: 用于功率转换器的示例性控制器包括振荡器和逻辑电路。 振荡器将耦合到功率转换器的开关,并确定开关的开关周期周期。 逻辑电路还要耦合到开关,以响应于反馈信号的幅度来控制开关的占空比,以调节功率转换器的输出。 逻辑电路控制开关的占空比,使得在占空比控制模式之间的控制器转换期间,功率转换器的控制环路增益基本上是恒定的。

    METHOD AND APPARATUS TO LIMIT OUTPUT POWER IN A SWITCHING POWER SUPPLY
    5.
    发明申请
    METHOD AND APPARATUS TO LIMIT OUTPUT POWER IN A SWITCHING POWER SUPPLY 有权
    限制开关电源输出功率的方法和装置

    公开(公告)号:US20090256544A1

    公开(公告)日:2009-10-15

    申请号:US12488427

    申请日:2009-06-19

    IPC分类号: G05F1/573

    CPC分类号: H02M3/33507 H02M1/32

    摘要: Techniques are disclosed to adjust a current limit in a switching regulator. One example switching regulator includes a comparator having first and second inputs and an output. The first input of the comparator is adapted to sense a current flow through a switch and the second input of the comparator is adapted to sense a variable current limit value. A controller is coupled to the output of the comparator and to the switch to control switching of the switch to regulate an output of a power supply in response a feedback signal. The controller disables the switch if the sensed current flow through the switch is greater than the sensed variable current limit value. The variable current limit value is set to a first variable current limit value by the controller in response to an input line voltage of the power supply if there is not an over current condition during a first switching cycle that occurs after a skipped switching cycle of the switch. The variable current limit value is set to a second variable current limit value by the controller in response to the input line voltage if there is the over current condition during the first switching cycle that occurs after the skipped switching cycle.

    摘要翻译: 公开了用于调节开关调节器中的电流限制的技术。 一个示例开关调节器包括具有第一和第二输入和输出的比较器。 比较器的第一输入适于感测通过开关的电流,并且比较器的第二输入适于感测可变电流限制值。 控制器耦合到比较器和开关的输出端,以响应于反馈信号来控制开关的开关以调节电源的输出。 如果检测到的电流流过开关,则控制器禁用开关大于检测到的可变电流限制值。 如果在第一开关周期中没有过电流状态,则在可跳过的开关周期之后发生的可变电流限制值被控制器响应于电源的输入线电压而被设置为第一可变电流限制值 开关。 如果在跳过的开关周期之后发生的第一开关周期期间存在过电流状态,则控制器响应于输入线电压将可变电流限制值设置为第二可变电流限制值。

    METHOD AND APPARATUS FOR CONDITIONAL RESPONSE TO A FAULT CONDITION IN A SWITCHING POWER SUPPLY
    6.
    发明申请
    METHOD AND APPARATUS FOR CONDITIONAL RESPONSE TO A FAULT CONDITION IN A SWITCHING POWER SUPPLY 有权
    开关电源故障状态条件响应的方法与装置

    公开(公告)号:US20090251931A1

    公开(公告)日:2009-10-08

    申请号:US12413232

    申请日:2009-03-27

    IPC分类号: H02M3/335

    CPC分类号: H02M1/32 H02M3/33507

    摘要: Techniques are disclosed to regulate an output of a power converter. One example power converter controller circuit includes a line sense input to be coupled to receive a signal representative of an input voltage of a power converter. A feedback input to be coupled to receive a feedback signal representative of an output of the power converter is also included. A drive signal generator is also included to generate a drive signal coupled to control switching of a switch to provide a regulated output parameter at the output of the power converter in response to the feedback signal. The drive signal generator is coupled to receive a plurality of inputs including the line sense input and the feedback input. The drive signal generator is coupled to latch the power converter into an off state in response to a detection of a fault condition in the power converter as detected by the plurality of inputs if the power converter input voltage is above a first threshold level. The drive signal generator to be unresponsive to the signal representative of the power converter input voltage while the controller is regulating the output parameter at the output of the power converter.

    摘要翻译: 公开了调节功率转换器的输出的技术。 一个示例性功率转换器控制器电路包括要耦合以接收表示功率转换器的输入电压的信号的线路感测输入。 还包括要耦合以接收表示功率转换器的输出的反馈信号的反馈输入。 还包括驱动信号发生器以产生耦合以控制开关的开关的驱动信号,以响应于反馈信号在功率转换器的输出处提供稳定的输出参数。 驱动信号发生器被耦合以接收包括线路感测输入和反馈输入的多个输入。 如果功率转换器输入电压高于第一阈值电平,则驱动信号发生器被耦合以响应于由多个输入检测到的功率转换器中的故障状况的检测,将功率转换器锁存到断开状态。 在控制器调节功率转换器输出端的输出参数时,驱动信号发生器对代表功率转换器输入电压的信号无响应。

    Method and apparatus for conditional response to a fault condition in a switching power supply
    7.
    发明申请
    Method and apparatus for conditional response to a fault condition in a switching power supply 失效
    用于对开关电源中的故障状况进行条件响应的方法和装置

    公开(公告)号:US20070242488A1

    公开(公告)日:2007-10-18

    申请号:US11811244

    申请日:2007-06-07

    IPC分类号: H02M3/335

    CPC分类号: H02M1/32 H02M3/33507

    摘要: Techniques are disclosed to regulate an output of a power converter. One example power converter controller circuit includes a line sense input to be coupled to receive a signal representative of an input voltage of a power converter. A feedback input is included and is to be coupled to receive a feedback signal representative of an output of the power converter. A drive signal generator is included and is to generate a drive signal coupled to control switching of a switch to provide a regulated output parameter at the output of the power converter in response to the feedback signal. The drive signal generator is to latch the power converter into an off state in response to a detection of a loss of regulation of a power converter output parameter if the input voltage of the power converter is above a threshold level. The drive signal generator is to be unresponsive to the signal representative of the input voltage of the power converter while the power converter output parameter is in regulation.

    摘要翻译: 公开了调节功率转换器的输出的技术。 一个示例性功率转换器控制器电路包括要耦合以接收表示功率转换器的输入电压的信号的线路感测输入。 反馈输入被包括并且被耦合以接收表示功率转换器的输出的反馈信号。 包括驱动信号发生器,并且产生耦合以控制开关的开关的驱动信号,以响应于反馈信号在功率转换器的输出处提供稳定的输出参数。 如果功率转换器的输入电压高于阈值电平,则驱动信号发生器响应于检测到功率转换器输出参数的调节的损失而将功率转换器锁存到关闭状态。 驱动信号发生器对代表功率转换器的输入电压的信号无响应,而功率转换器输出参数处于调节状态。

    Method and apparatus to provide temporary peak power from a switching regulator

    公开(公告)号:US20060098463A1

    公开(公告)日:2006-05-11

    申请号:US10981959

    申请日:2004-11-05

    IPC分类号: H02M3/335

    CPC分类号: H02M3/33507

    摘要: Various techniques directed to providing temporary peak power from a switching regulator are disclosed. In one aspect, a switching regulator includes a switch that is to be coupled between a power supply input and an energy transfer element of the power supply. A controller is coupled to be responsive to a feedback signal to be received from an output of the power supply. The controller is coupled to switch the switch in response to the feedback signal to regulate the output of the power supply. An oscillator is coupled to provide an oscillating signal to the controller to determine a maximum switching frequency of the switch. The oscillating signal is coupled to oscillate at a first frequency under a first moderate load condition at the power supply output. The oscillating signal is coupled to oscillate at a second frequency under a second peak load condition at the power supply output.

    METHOD AND APPARATUS TO PROVIDE TEMPORARY PEAK POWER FROM A SWITCHING REGULATOR
    9.
    发明申请
    METHOD AND APPARATUS TO PROVIDE TEMPORARY PEAK POWER FROM A SWITCHING REGULATOR 失效
    从开关稳压器提供临时峰值功率的方法和装置

    公开(公告)号:US20090212755A1

    公开(公告)日:2009-08-27

    申请号:US12430709

    申请日:2009-04-27

    IPC分类号: G05F1/00

    CPC分类号: H02M3/33507

    摘要: Various techniques directed to providing temporary peak power from a switching regulator are disclosed. In one aspect, a switching regulator includes a switch that is to be coupled between a power supply input and an energy transfer element of the power supply. A controller is coupled to be responsive to a feedback signal to be received from an output of the power supply. The controller is coupled to switch the switch in response to the feedback signal to regulate the output of the power supply. An oscillator is coupled to provide an oscillating signal to the controller to determine a maximum switching frequency of the switch. The oscillating signal is coupled to oscillate at a first frequency under a first moderate load condition at the power supply output. The oscillating signal is coupled to oscillate at a second frequency under a second peak load condition at the power supply output.

    摘要翻译: 公开了用于提供来自开关调节器的临时峰值功率的各种技术。 在一个方面,开关调节器包括要耦合在电源输入和电源的能量传递元件之间的开关。 控制器被耦合以响应于从电源的输出接收的反馈信号。 控制器耦合以响应于反馈信号切换开关以调节电源的输出。 振荡器被耦合以向控制器提供振荡信号以确定开关的最大开关频率。 振荡信号被耦合以在电源输出处的第一中等负载条件下以第一频率振荡。 振荡信号被耦合以在电源输出处的第二峰值负载条件下以第二频率振荡。

    METHOD AND APPARATUS TO PROVIDE TEMPORARY PEAK POWER FROM A SWITCHING REGULATOR
    10.
    发明申请
    METHOD AND APPARATUS TO PROVIDE TEMPORARY PEAK POWER FROM A SWITCHING REGULATOR 有权
    从开关稳压器提供临时峰值功率的方法和装置

    公开(公告)号:US20080218143A1

    公开(公告)日:2008-09-11

    申请号:US12125839

    申请日:2008-05-22

    IPC分类号: G05F1/10

    CPC分类号: H02M3/33507

    摘要: Various techniques directed to providing temporary peak power from a switching regulator are disclosed. In one aspect, a switching regulator includes a switch that is to be coupled between a power supply input and an energy transfer element of the power supply. A controller is coupled to be responsive to a feedback signal to be received from an output of the power supply. The controller is coupled to switch the switch in response to the feedback signal to regulate the output of the power supply. An oscillator is coupled to provide an oscillating signal to the controller to determine a maximum switching frequency of the switch. The oscillating signal is coupled to oscillate at a first frequency under a first moderate load condition at the power supply output. The oscillating signal is coupled to oscillate at a second frequency under a second peak load condition at the power supply output.

    摘要翻译: 公开了用于提供来自开关调节器的临时峰值功率的各种技术。 在一个方面,开关调节器包括要耦合在电源输入和电源的能量传递元件之间的开关。 控制器被耦合以响应于从电源的输出接收的反馈信号。 控制器耦合以响应于反馈信号切换开关以调节电源的输出。 振荡器被耦合以向控制器提供振荡信号以确定开关的最大开关频率。 振荡信号被耦合以在电源输出处的第一中等负载条件下以第一频率振荡。 振荡信号被耦合以在电源输出处的第二峰值负载条件下以第二频率振荡。