公开(公告)号：US20060119328A1

公开(公告)日：2006-06-08

申请号：US11336728

申请日：2006-01-20

申请人： Kent Wong ,  Arthur Odell ,  Stefan Baurle

发明人： Kent Wong ,  Arthur Odell ,  Stefan Baurle

IPC分类号： G05F1/613 ,  G05F3/16

CPC分类号： H02M1/32 ,  H02M3/156 ,  H02M2001/0009 ,  H02M2001/0025

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。

公开(公告)号：US20050083023A1

公开(公告)日：2005-04-21

申请号：US10986622

申请日：2004-11-12

申请人： Kent Wong ,  Arthur Odell ,  Stefan Baurle

发明人： Kent Wong ,  Arthur Odell ,  Stefan Baurle

IPC分类号： H02M3/155 ,  G05F1/40 ,  G05F1/613 ,  G05F1/656 ,  H02M1/00 ,  H02M1/32 ,  H02M3/02 ,  H02M3/156 ,  H02M3/28

CPC分类号： H02M1/32 ,  H02M3/156 ,  H02M2001/0009 ,  H02M2001/0025

摘要： A reduced cost voltage regulation circuit for switched mode power supplies. In one embodiment, a voltage regulation circuit includes a current sense circuit having a current sense terminal to conduct a current to be sensed by the current sense circuit. A voltage difference between the current sense terminal and a voltage reference terminal is substantially fixed when the current to be sensed by the current sense circuit is substantially equal to a first current sense threshold. The voltage regulation circuit also includes a first impedance coupled between the current sense terminal and the voltage reference terminal to provide a second current sense threshold. The second current sense threshold is equal to a sum of the first current sense threshold and a current to flow through the first impedance. The voltage regulation circuit further includes a second impedance coupled between the current sense terminal and an input terminal. The input terminal has a voltage threshold relative to the voltage reference terminal that is different from a voltage at the current sense terminal by an amount that is a product of the second impedance and the second current threshold.

摘要翻译： 用于开关式电源的降低成本的电压调节电路。 在一个实施例中，电压调节电路包括具有电流检测端子的电流检测电路，以传导由电流感测电路感测的电流。 当电流检测电路要感测的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基准端子之间的电压差基本上是固定的。 电压调节电路还包括耦合在电流检测端子和电压参考端子之间的第一阻抗以提供第二电流检测阈值。 第二电流检测阈值等于第一电流检测阈值和流过第一阻抗的电流之和。 电压调节电路还包括耦合在电流感测端子和输入端子之间的第二阻抗。 输入端子具有相对于电压参考端子的电压阈值，该电压阈值与电流检测端子处的电压不同于第二阻抗和第二电流阈值的乘积量。

公开(公告)号：US20080259653A1

公开(公告)日：2008-10-23

申请号：US12145291

申请日：2008-06-24

申请人： Stefan Baurle ,  Alex B. Djenguerian ,  Kent Wong

发明人： Stefan Baurle ,  Alex B. Djenguerian ,  Kent Wong

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。

公开(公告)号：US20090256544A1

公开(公告)日：2009-10-15

申请号：US12488427

申请日：2009-06-19

申请人： Alex B. Djenguerian ,  Stefan Baurle ,  Kent Wong

发明人： Alex B. Djenguerian ,  Stefan Baurle ,  Kent Wong

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。

公开(公告)号：US20090251931A1

公开(公告)日：2009-10-08

申请号：US12413232

申请日：2009-03-27

申请人： Stefan Baurle ,  Alex B. Djenguerian ,  Kent Wong

发明人： Stefan Baurle ,  Alex B. Djenguerian ,  Kent Wong

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。

公开(公告)号：US20070242488A1

公开(公告)日：2007-10-18

申请号：US11811244

申请日：2007-06-07

申请人： Stefan Baurle ,  Alex Djenguerian ,  Kent Wong

发明人： Stefan Baurle ,  Alex Djenguerian ,  Kent Wong

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。

公开(公告)号：US20070176589A1

公开(公告)日：2007-08-02

申请号：US11732209

申请日：2007-04-02

申请人： Alex Djenguerian ,  Stefan Baurle ,  Kent Wong

发明人： Alex Djenguerian ,  Stefan Baurle ,  Kent Wong

IPC分类号： G05F1/00

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 switch to be coupled to an energy transfer element of a power supply. A controller to generate a drive signal is coupled to control switching of the switch to regulate an output of the power supply. A current limiter is included in the controller to adjust the drive signal to limit a current though the switch to a variable current limit value. The variable current limit value is set by the current limiter in response to an input line voltage to be coupled to the energy transfer element.

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。 一个示例性开关调节器包括要耦合到电源的能量传递元件的开关。 用于产生驱动信号的控制器被耦合以控制开关的切换以调节电源的输出。 控制器中包含一个限流器，用于调节驱动信号，以将通过开关的电流限制在可变电流限制值。 可变电流限制值由电流限制器响应于要耦合到能量传递元件的输入线电压而设置。

公开(公告)号：US20070007938A1

公开(公告)日：2007-01-11

申请号：US11179144

申请日：2005-07-11

申请人： Alex Djenguerian ,  Stefan Baurle ,  Kent Wong

发明人： Alex Djenguerian ,  Stefan Baurle ,  Kent Wong

IPC分类号： G05F1/00

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 switch to be coupled to an energy transfer element of a power supply. A controller to generate a drive signal is coupled to control switching of the switch to regulate an output of the power supply. A current limiter is included in the controller to adjust the drive signal to limit a current though the switch to a variable current limit value. The variable current limit value is set by the current limiter in response to an input line voltage to be coupled to the energy transfer element.

公开(公告)号：US20080164858A1

公开(公告)日：2008-07-10

申请号：US12052609

申请日：2008-03-20

申请人： Alex B. Djenguerian ,  Stefan Baurle ,  Kent Wong

发明人： Alex B. Djenguerian ,  Stefan Baurle ,  Kent Wong

IPC分类号： G05F1/00

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。

公开(公告)号：US20070008749A1

公开(公告)日：2007-01-11

申请号：US11178132

申请日：2005-07-07

申请人： Stefan Baurle ,  Alex Djenguerian ,  Kent Wong

发明人： Stefan Baurle ,  Alex Djenguerian ,  Kent Wong

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 includes an energy transfer element coupled between an input and an output of the power converter. A switch included in the power converter is coupled to the input of the energy transfer element. The power converter also includes a controller circuit coupled to the switch. The controller circuit is also coupled to receive a feedback signal representative of the output of the power converter and coupled to receive a signal representative of the power converter input voltage. The controller circuit is coupled to control switching of the switch to provide a regulated output parameter at the output of the power converter in response to the feedback signal. The controller circuit is coupled 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 power converter input voltage is above a threshold level. The controller circuit is also unresponsive to the signal representative of the power converter input voltage 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包括耦合在功率转换器的输入和输出之间的能量传递元件。 包括在功率转换器中的开关耦合到能量传递元件的输入端。 功率转换器还包括耦合到开关的控制器电路。 控制器电路还被耦合以接收表示功率转换器的输出的反馈信号，并被耦合以接收代表功率转换器输入电压的信号。 控制器电路被耦合以控制开关的开关，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。 如果功率转换器输入电压高于阈值电平，则控制器电路被耦合以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。 在功率转换器输出参数调节时，控制器电路对代表功率转换器输入电压的信号也无响应。