公开(公告)号：US08724344B2

公开(公告)日：2014-05-13

申请号：US13486287

申请日：2012-06-01

申请人： David Michael Hugh Matthews

发明人： David Michael Hugh Matthews

IPC分类号： H02M3/335

CPC分类号： H02M3/33507

摘要： A controller for use in a power converter includes a control circuit coupled to control switching of a power switch coupled between a positive input supply rail of the power converter and an energy transfer element input of the power converter. A sampling circuit is coupled to the control circuit and is coupled to receive a signal across the energy transfer element input during an off time of the power switch to provide a sampled output of the converter. The sampled output of the power converter is disabled from being resampled by the sampling circuit during an on time of the power switch. A switch conduction scheduling circuit is included in the control circuit and is coupled to the sampling circuit such that the control circuit is coupled to switch the power switch in response to the sampled output of the power converter.

摘要翻译： 用于功率转换器的控制器包括控制电路，其耦合以控制耦合在功率转换器的正输入电源轨与功率转换器的能量传递元件输入之间的功率开关的切换。 采样电路耦合到控制电路，并被耦合以在电源开关的关断时间期间跨越能量传输元件输入端接收信号，以提供转换器的采样输出。 功率转换器的采样输出在电源开关导通时被禁止被采样电路重新采样。 开关传导调度电路包括在控制电路中并且耦合到采样电路，使得控制电路被耦合以响应于功率转换器的采样输出来切换功率开关。

公开(公告)号：US08558484B2

公开(公告)日：2013-10-15

申请号：US12648003

申请日：2009-12-28

申请人： David Michael Hugh Matthews

发明人： David Michael Hugh Matthews

IPC分类号： H05B41/18

CPC分类号： H02M3/155

摘要： An example power converter includes a first winding, a second winding, a switch, and a controller. The second winding is magnetically coupled to the first winding and the switch is coupled between the first winding and the second winding such that a current flows through the first winding, the second winding and the switch when the switch is in an ON state. The controller is coupled to control the switch to regulate an output of the power converter in response to a feedback signal.

摘要翻译： 示例性功率转换器包括第一绕组，第二绕组，开关和控制器。 第二绕组磁耦合到第一绕组，并且开关耦合在第一绕组和第二绕组之间，使得当开关处于导通状态时，电流流过第一绕组，第二绕组和开关。 控制器被耦合以控制开关以响应于反馈信号来调节功率转换器的输出。

公开(公告)号：US08519693B2

公开(公告)日：2013-08-27

申请号：US13419940

申请日：2012-03-14

申请人： David Michael Hugh Matthews

发明人： David Michael Hugh Matthews

IPC分类号： H02M3/335 ,  G05F1/575

CPC分类号： H02M3/33523 ,  H02J9/005 ,  H02M3/00 ,  Y10T307/406

摘要： A control circuit includes a drive signal generator controlling switching of a power switch to regulate a flow of energy to one or more loads coupled to a power converter output. A regulator circuit charges a capacitor to a first voltage and stops charging the capacitor if an energy requirement of the one or more loads falls below a threshold. The regulator again charges the capacitor after the capacitor is discharged from the first voltage to a second voltage. An unregulated dormant mode control circuit renders dormant the drive signal generator and the regulator circuit while the capacitor is discharged from the first voltage to the second voltage causing the regulation of the flow of energy to the power converter output to cease. The drive signal generator and the regulator circuit are powered up after the capacitor is discharged from the first voltage to the second voltage.

摘要翻译： 控制电路包括驱动信号发生器，其控制功率开关的切换以调节能量流耦合到功率转换器输出的一个或多个负载。 调节器电路将电容器充电到第一电压，并且如果一个或多个负载的能量需求低于阈值，则停止对电容器充电。 在电容器从第一电压放电到第二电压之后，调节器再次对电容器充电。 当电容器从第一电压放电到第二电压时，不调节的休眠模式控制电路使得驱动信号发生器和调节器电路休眠，从而调节对功率转换器输出的能量流动停止。 在电容器从第一电压放电到第二电压之后，驱动信号发生器和调节器电路通电。

公开(公告)号：US08427124B2

公开(公告)日：2013-04-23

申请号：US13193284

申请日：2011-07-28

申请人： Balu Balakrishnan ,  Alex B. Djenguerian ,  Kent Wong ,  David Michael Hugh Matthews

发明人： Balu Balakrishnan ,  Alex B. Djenguerian ,  Kent Wong ,  David Michael Hugh Matthews

IPC分类号： G05F1/40

CPC分类号： H02M3/33523 ,  H02M3/33507 ,  H02M2001/0009 ,  H03K17/0822

摘要： A method and apparatus of reducing peak current variation with changing input line voltage in a switch mode power supply is disclosed. An example method includes sensing a current through a switching device of the switch mode power supply. A variable current limit threshold is generated, which increases from a first level to a second level during an on time of the switching device. The current is compared to the variable current limit threshold. A feedback signal representative of an output voltage of the switch mode power supply is sensed. The switching device is controlled in response to the feedback signal and said comparing the current to the variable current limit threshold.

摘要翻译： 公开了一种通过改变开关模式电源中的输入线电压来降低峰值电流变化的方法和装置。 示例性方法包括感测通过开关模式电源的开关装置的电流。 产生可变电流限制阈值，其在开关装置的接通时间期间从第一电平增加到第二电平。 将电流与可变电流限制阈值进行比较。 检测表示开关模式电源的输出电压的反馈信号。 响应于反馈信号来控制开关装置，并且将电流与可变电流限制阈值进行比较。

公开(公告)号：US08369111B2

公开(公告)日：2013-02-05

申请号：US12848617

申请日：2010-08-02

申请人： Balu Balakrishnan ,  David Michael Hugh Matthews

发明人： Balu Balakrishnan ,  David Michael Hugh Matthews

IPC分类号： H02M3/335 ,  H02H7/122

CPC分类号： H02M3/33523 ,  H02M1/4225 ,  H02M2001/0032 ,  H02M2001/0048 ,  Y02B70/126 ,  Y02B70/1491 ,  Y02B70/16

摘要： A power converter with low power consumption during a standby operating condition. An example power controller includes a main converter coupled to a dc input of the power converter to control a transfer of energy from the dc input of the power converter to a main output of the power converter. A standby converter is also included and is coupled to the dc input of the power converter to control a transfer of energy from the dc input of the power converter to a standby output of the power converter during a standby operating condition of the power converter. A standby circuit is also included and is coupled to the dc input of the power converter and coupled to the main converter. The standby circuit decouples the main converter from the dc input of the power converter during the standby operating condition of the power converter.

摘要翻译： 电源转换器，在待机状态下具有低功耗。 示例性功率控制器包括耦合到功率转换器的直流输入的主转换器，以控制从功率转换器的直流输入到功率转换器的主输出的能量传递。 还包括备用转换器，并且耦合到功率转换器的直流输入，以在功率转换器的待机操作状态期间控制从功率转换器的直流输入到功率转换器的备用输出的能量传递。 还包括备用电路并且耦合到功率转换器的直流输入并耦合到主转换器。 备用电路在电源转换器的待机运行状态下将主转换器与电源转换器的直流输入端分离。

公开(公告)号：US08310845B2

公开(公告)日：2012-11-13

申请号：US12658479

申请日：2010-02-10

申请人： Yury Gaknoki ,  Tiziano Pastore ,  Mingming Mao ,  David Michael Hugh Matthews

发明人： Yury Gaknoki ,  Tiziano Pastore ,  Mingming Mao ,  David Michael Hugh Matthews

IPC分类号： H02M3/335

CPC分类号： H05B33/0815 ,  H02M3/156 ,  H02M3/33507

摘要： A method of operation for flyback power converter includes operating a controller of the flyback power converter in a regulation mode when a control signal is below a first threshold. The control signal is provided as an input to a terminal of the flyback power converter. When the control signal is below a second threshold and above the first threshold, the controller is operated in a limiting mode. The controller is operated in an external command mode when the control signal is below a third threshold and above the second threshold. Lastly, when the control signal is above the third threshold, the controller is operated in a protection mode.

摘要翻译： 用于反激式功率转换器的操作方法包括当控制信号低于第一阈值时，以调节模式操作回扫功率转换器的控制器。 该控制信号被提供给反激式功率转换器的端子作为输入。 当控制信号低于第二阈值并高于第一阈值时，控制器在限制模式下操作。 当控制信号低于第三阈值并高于第二阈值时，控制器以外部命令模式操作。 最后，当控制信号高于第三阈值时，控制器工作在保护模式。

公开(公告)号：US08300434B2

公开(公告)日：2012-10-30

申请号：US13315166

申请日：2011-12-08

申请人： Yury Gaknoki ,  Mingming Mao ,  David Michael Hugh Matthews ,  Tiziano Pastore

发明人： Yury Gaknoki ,  Mingming Mao ,  David Michael Hugh Matthews ,  Tiziano Pastore

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/4258 ,  H02M3/33515 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B70/126

摘要： An example controller includes a feedback sensor circuit that receives a feedback signal representative of an output of a power converter. A feedback sampling signal generator is coupled to generate a feedback sampling signal. The feedback sensor circuit samples the feedback signal in response to the feedback sampling signal. A state machine controls switching of a switch of a power converter circuit according to one of a plurality of operating condition states in response to the feedback sensor circuit. Each of the plurality of operating condition states includes a substantially fixed switch on time. A feedback time period signal generator generates a feedback time period signal received by the state machine. A period of the feedback time period signal is substantially greater than a period of the feedback sampling signal. The state machine is updated in response to the feedback time period signal.

摘要翻译： 示例性控制器包括反馈传感器电路，其接收表示功率转换器的输出的反馈信号。 耦合反馈采样信号发生器以产生反馈采样信号。 反馈传感器电路响应于反馈采样信号对反馈信号进行采样。 响应于反馈传感器电路，状态机根据多个操作状态中的一个来控制功率转换器电路的开关的切换。 多个操作状态中的每一个包括基本上固定的开关开关。 反馈时间周期信号发生器产生由状态机接收的反馈时间周期信号。 反馈时间周期信号的周期显着大于反馈采样信号的周期。 响应于反馈时间段信号更新状态机。

公开(公告)号：US20120105018A1

公开(公告)日：2012-05-03

申请号：US13345257

申请日：2012-01-06

申请人： Balu Balakrishnan ,  David Kung ,  Raymond Kenneth Orr ,  David Michael Hugh Matthews

发明人： Balu Balakrishnan ,  David Kung ,  Raymond Kenneth Orr ,  David Michael Hugh Matthews

IPC分类号： H02J7/00

CPC分类号： H02M1/32 ,  H02M1/12 ,  H02M1/126 ,  H02M1/36 ,  H02M2001/322

摘要： A switch is coupled to a control circuit and to an input of a power converter. The control circuit is coupled to drive the switch in a first operating mode to transfer energy from the input to an output of the power converter when an electrical energy source is coupled to the input of the power converter. The control circuit is coupled to drive the switch in a second operating mode when the electrical energy source is uncoupled from the input. A capacitance is coupled between input terminals of the input of the power converter and is discharged to a threshold voltage in less than a maximum period of time from when the electrical energy source is uncoupled from the input terminals. The control circuit is coupled to drive the switch to have a high average impedance in the first operating mode.

摘要翻译： 开关耦合到控制电路和功率转换器的输入端。 当电能源耦合到功率转换器的输入端时，控制电路被耦合以在第一操作模式下驱动开关以将能量从输入传递到功率转换器的输出端。 当电能源与输入端分离时，控制电路被耦合以在第二操作模式下驱动开关。 电容耦合在功率转换器的输入端的输入端之间，并且在电能从输入端分离之后的最小时间内被放电到阈值电压。 控制电路被耦合以驱动开关以在第一操作模式中具有高平均阻抗。

公开(公告)号：US08159839B2

公开(公告)日：2012-04-17

申请号：US13090102

申请日：2011-04-19

申请人： David Michael Hugh Matthews

发明人： David Michael Hugh Matthews

IPC分类号： H02M3/335 ,  G05F1/575

CPC分类号： H02M3/33523 ,  H02J9/005 ,  H02M3/00 ,  Y10T307/406

摘要： A control circuit for use in a power converter with an unregulated dormant mode of operation is disclosed. In one aspect a power converter includes a drive signal generator that is coupled to generate a drive signal to control switching of a power switch coupled to the control circuit to regulate a flow of energy to an output of the power converter in response to an energy requirement of one or more loads coupled to the output of the power converter. A regulator circuit is coupled to charge a capacitor. The capacitor determines a time period. The regulator circuit is coupled to not charge the capacitor if the energy requirement of the one or more loads coupled to the output of the power converter falls below a threshold. The regulator is coupled to again charge the capacitor after the time period has elapsed. An unregulated dormant mode control circuit is coupled to render dormant the drive signal generator and the regulator circuit during the time period thereby causing regulation of the flow of energy to the output of power converter output to cease. The unregulated dormant mode control circuit is further coupled to power up the drive signal generator and the regulator after the time period has elapsed.

摘要翻译： 公开了一种用于具有未调节的休眠操作模式的功率转换器的控制电路。 在一个方面，功率转换器包括驱动信号发生器，其被耦合以产生驱动信号以控制耦合到控制电路的功率开关的切换，以响应于能量需求来调节能量流到功率转换器的输出 耦合到功率转换器的输出的一个或多个负载。 耦合电容器的调节器电路。 电容器确定一个时间段。 如果耦合到功率转换器的输出的一个或多个负载的能量需求低于阈值，则调节器电路被耦合以不对电容器充电。 在经过时间之后，稳压器被耦合以对电容器再次充电。 耦合不调节的休眠模式控制电路以在该时间段期间使驱动信号发生器和调节器电路休眠，由此导致能量流向功率转换器输出的输出的调节停止。 未调节的休眠模式控制电路还被耦合以在经过该时间段之后给驱动信号发生器和调节器供电。

公开(公告)号：US20110085358A1

公开(公告)日：2011-04-14

申请号：US12579247

申请日：2009-10-14

申请人： David Michael Hugh Matthews

发明人： David Michael Hugh Matthews

IPC分类号： H02M3/335

CPC分类号： H02M3/33507

摘要： A power supply control circuit for use in a power supply is disclosed. An example power supply control circuit includes a power switch coupled between first and second terminals. The first terminal is to be coupled to a positive input supply rail of the power supply. The second terminal is to be coupled to an energy transfer element input of the power supply. A sampling circuit is coupled to a third terminal. The sampling circuit coupled to sample a signal across the energy transfer element input of the power supply during an off time of the power switch to provide a sampled output of the power supply. The sampled output of the power supply is disabled from being be resampled by the sampling circuit during an on time of the power switch. A control circuit coupled to the sampling circuit and the power switch, the control circuit coupled to switch the power switch in response to the sampled output of the power supply.

摘要翻译： 公开了一种用于电源的电源控制电路。 示例性电源控制电路包括耦合在第一和第二端子之间的功率开关。 第一个端子要耦合到电源的正输入电源轨。 第二端子被耦合到电源的能量传递元件输入端。 采样电路耦合到第三端子。 所述采样电路耦合以在所述电源开关的断开时间期间跨越所述电源的所述能量传递元件输入端采样信号，以提供所述电源的采样输出。 在电源开关接通时，电源的采样输出被禁止被采样电路重新采样。 耦合到采样电路和电源开关的控制电路，所述控制电路被耦合以响应于电源的采样输出来切换电源开关。