公开(公告)号：US08374006B2

公开(公告)日：2013-02-12

申请号：US13411297

申请日：2012-03-02

Applicant: Leif Lund ,  Alex B. Djenguerian ,  William M. Polivka

Inventor： Leif Lund ,  Alex B. Djenguerian ,  William M. Polivka

IPC: H02H7/122

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M2001/0025

Abstract: An example controller for a primary side control power converter includes a feedback circuit, a driver circuit, and an adjustable voltage reference circuit. The feedback circuit is coupled to compare a feedback signal representative of a bias winding voltage of the power converter with a voltage reference. The driver circuit is coupled to output a switching signal to control a switch of the power converter to regulate an output of the power converter in response the feedback circuit. The adjustable voltage reference circuit is coupled to adjust the voltage reference such that the bias winding voltage is adjusted nonlinearly in response to a load condition at the output of the power converter. The adjustable voltage reference circuit is further coupled to detect the load condition in response to the switching signal.

Abstract translation: 用于初级侧控制功率转换器的示例性控制器包括反馈电路，驱动电路和可调电压基准电路。 反馈电路被耦合以将表示功率转换器的偏置绕组电压的反馈信号与参考电压进行比较。 驱动电路被耦合以输出开关信号以控制功率转换器的开关，以响应于反馈电路来调节功率转换器的输出。 耦合可调电压参考电路以调整电压参考，使得偏置绕组电压响应于功率转换器的输出处的负载条件而非线性地调节。 可调电压参考电路还被耦合以响应于开关信号检测负载条件。

公开(公告)号：US20120163043A1

公开(公告)日：2012-06-28

申请号：US13411297

申请日：2012-03-02

Applicant: Leif Lund ,  Alex B. Djenguerian ,  William M. Polivka

Inventor： Leif Lund ,  Alex B. Djenguerian ,  William M. Polivka

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M2001/0025

Abstract: An example controller for a primary side control power converter includes a feedback circuit, a driver circuit, and an adjustable voltage reference circuit. The feedback circuit is coupled to compare a feedback signal representative of a bias winding voltage of the power converter with a voltage reference. The driver circuit is coupled to output a switching signal to control a switch of the power converter to regulate an output of the power converter in response the feedback circuit. The adjustable voltage reference circuit is coupled to adjust the voltage reference such that the bias winding voltage is adjusted nonlinearly in response to a load condition at the output of the power converter. The adjustable voltage reference circuit is further coupled to detect the load condition in response to the switching signal.

Abstract translation: 用于初级侧控制功率转换器的示例性控制器包括反馈电路，驱动电路和可调电压基准电路。 反馈电路被耦合以将表示功率转换器的偏置绕组电压的反馈信号与参考电压进行比较。 驱动电路被耦合以输出开关信号以控制功率转换器的开关，以响应于反馈电路来调节功率转换器的输出。 耦合可调电压参考电路以调整电压参考，使得偏置绕组电压响应于功率转换器的输出处的负载条件而非线性地调节。 可调电压参考电路还被耦合以响应于开关信号检测负载条件。

公开(公告)号：US08194421B2

公开(公告)日：2012-06-05

申请号：US13170018

申请日：2011-06-27

Applicant: Alex B. Djenguerian ,  Leif Lund

Inventor： Alex B. Djenguerian ,  Leif Lund

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M3/33507 ,  H02M2001/0009 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10T307/406

Abstract: A method for controlling an output of a power converter includes generating a drive signal with a control circuit, entering a dormant mode of operation that includes powering down the control circuit if a flow of energy to an output of the power converter is less than a threshold value for more than a first period of time, and powering up the control circuit after it is in the dormant mode of operation for a second period of time.

Abstract translation: 用于控制功率转换器的输出的方法包括利用控制电路产生驱动信号，进入休眠模式，其包括如果对功率转换器的输出的能量流量小于阈值的电源，则控制电路断电 值超过第一时间段，并且在控制电路处于第二时间段的休眠模式之后上电。

公开(公告)号：US20100194445A1

公开(公告)日：2010-08-05

申请号：US12363550

申请日：2009-01-30

Applicant: Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

Inventor： Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

IPC: H03B1/00

CPC classification number: H02M3/33507 ,  H02M1/44 ,  H02M7/527 ,  H02M2001/007

Abstract: A controller for a power supply includes a logic block and a time-to-frequency converter. The logic block is to generate a drive signal in response to a clock signal. The drive signal is to be coupled to control switching of a power switch of the power supply to regulate an output of the power supply. The time-to-frequency converter is coupled to the logic block and generates the clock signal having a frequency responsive to a time period of the drive signal.

Abstract translation: 用于电源的控制器包括逻辑块和时间 - 频率转换器。 逻辑块是响应于时钟信号产生驱动信号。 驱动信号被耦合以控制电源的电源开关的切换以调节电源的输出。 时间 - 频率转换器耦合到逻辑块，并产生具有响应于驱动信号的时间周期的频率的时钟信号。

公开(公告)号：US08908395B2

公开(公告)日：2014-12-09

申请号：US13465882

申请日：2012-05-07

Applicant: Alex B. Djenguerian ,  Leif Lund

Inventor： Alex B. Djenguerian ,  Leif Lund

IPC: H02M5/27 ,  G05F1/577 ,  H02J3/14 ,  H02M3/335

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M3/33507 ,  H02M2001/0009 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10T307/406

Abstract: An example power converter includes an energy transfer element, a switch, and a control circuit. The control circuit includes a drive signal generator and an unregulated dormant mode control circuit. The unregulated dormant mode control circuit renders dormant the drive signal generator thereby ceasing the regulation of the output by the drive signal generator when the energy requirement of the one or more loads falls below a threshold for more than a first period of time. The drive signal generator is unresponsive to changes in the energy requirements of the one or more loads when dormant. The unregulated dormant mode control circuit powers up the drive signal generator after a second period of time has elapsed, such that the drive signal generator is again responsive to changes in the energy requirement of the one or more loads after the second period of time has elapsed.

Abstract translation: 示例性功率转换器包括能量传递元件，开关和控制电路。 控制电路包括驱动信号发生器和未调节的休眠模式控制电路。 当所述一个或多个负载的能量需求低于阈值超过第一时间段时，所述非调节休眠模式控制电路使所述驱动信号发生器休眠，由此停止所述驱动信号发生器输出的调节。 当休眠时，驱动信号发生器对一个或多个负载的能量需求的变化无响应。 未经调节的休眠模式控制电路在经过第二时间段之后对驱动信号发生器供电，使得驱动信号发生器再次响应于在第二时间段之后的一个或多个负载的能量需求的变化已经过去 。

公开(公告)号：US20120250368A1

公开(公告)日：2012-10-04

申请号：US13523570

申请日：2012-06-14

Applicant: Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

Inventor： Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M1/44 ,  H02M7/527 ,  H02M2001/007

Abstract: A controller for regulating an output of a power supply includes a logic block and an oscillator. The logic block generates the drive signal to control switching of a power switch in response to a clock signal. The clock signal has a frequency that decreases responsive to a time period of the drive signal, where a decrease in the time period of the drive signal represents an increase in an input voltage of the power supply. The oscillator is coupled to generate the clock signal in response to a waveform having an amplitude swing. The oscillator alters the waveform in response to the time period of the drive signal.

Abstract translation: 用于调节电源的输出的控制器包括逻辑块和振荡器。 逻辑块产生驱动信号，以响应于时钟信号来控制功率开关的切换。 时钟信号具有响应于驱动信号的时间段而减小的频率，其中驱动信号的时间段的减小表示电源的输入电压的增加。 振荡器被耦合以响应于具有幅度摆幅的波形而产生时钟信号。 振荡器响应于驱动信号的时间周期来改变波形。

公开(公告)号：US08669751B2

公开(公告)日：2014-03-11

申请号：US13523570

申请日：2012-06-14

Applicant: Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

Inventor： Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

IPC: G05F5/00 ,  G05F1/00 ,  H02M3/335 ,  H03K5/01

CPC classification number: H02M3/33507 ,  H02M1/44 ,  H02M7/527 ,  H02M2001/007

Abstract: A controller for regulating an output of a power supply includes a logic block and an oscillator. The logic block generates the drive signal to control switching of a power switch in response to a clock signal. The clock signal has a frequency that decreases responsive to a time period of the drive signal, where a decrease in the time period of the drive signal represents an increase in an input voltage of the power supply. The oscillator is coupled to generate the clock signal in response to a waveform having an amplitude swing. The oscillator alters the waveform in response to the time period of the drive signal.

Abstract translation: 用于调节电源的输出的控制器包括逻辑块和振荡器。 逻辑块产生驱动信号，以响应于时钟信号来控制功率开关的切换。 时钟信号具有响应于驱动信号的时间段而减小的频率，其中驱动信号的时间段的减小表示电源的输入电压的增加。 振荡器被耦合以响应于具有幅度摆幅的波形而产生时钟信号。 振荡器响应于驱动信号的时间周期来改变波形。

公开(公告)号：US08542468B2

公开(公告)日：2013-09-24

申请号：US13451383

申请日：2012-04-19

Applicant: Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

Inventor： Balu Balakrishnan ,  Alex B. Djenguerian ,  Leif Lund

IPC: H02H7/00

CPC classification number: H02M1/32 ,  B29C45/82 ,  B29C2045/824 ,  F16D31/02 ,  H02H7/1213 ,  H02M1/36 ,  H02M3/33507

Abstract: A switched mode power supply includes a transformer and an integrated circuit regulator. The integrated circuit regulator is coupled to the transformer and includes switching regulator logic, a counter, and a switching transistor. The regulator logic generates a switching signal in response to the feedback signal. The counter receives the feedback signal, where the feedback signal periodically cycles between a first state and a second state when the switched mode power supply operates normally. An output of the counter indicates an auto-restart mode of the regulator in response to the feedback signal remaining in the first state for a predetermined count due to a fault condition. The switching transistor is coupled to be turned on and off in response to the switching signal when the output of the counter does not indicate the auto-restart mode and is disabled when the output of the counter indicates the auto-restart mode.

Abstract translation: 开关电源包括变压器和集成电路调节器。 集成电路调节器耦合到变压器并且包括开关调节器逻辑，计数器和开关晶体管。 调节器逻辑响应于反馈信号产生开关信号。 计数器接收反馈信号，当开关模式电源正常工作时，反馈信号周期性地在第一状态和第二状态之间循环。 计数器的输出表示由于故障状况而响应于反馈信号在第一状态下保持预定计数的自动重启模式。 当计数器的输出不指示自动重启模式时，开关晶体管被响应于开关信号而被接通和断开，并且当计数器的输出指示自动重启模式时，开关晶体管被禁止。

公开(公告)号：US20100194367A1

公开(公告)日：2010-08-05

申请号：US12363657

申请日：2009-01-30

Applicant: Leif Lund ,  Alex B. Djenguerian ,  William M. Polivka

Inventor： Leif Lund ,  Alex B. Djenguerian ,  William M. Polivka

IPC: G05F1/00

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M2001/0025

Abstract: An example apparatus to regulate an output voltage of a power converter at light/no load conditions includes a driver circuit, a feedback circuit, and an adjustable voltage reference circuit. The driver circuit is coupled to output a drive signal to switch a power switch between an ON state and an OFF state to regulate an output of the power converter. The feedback circuit is coupled to the driver circuit and is further coupled to output an enable signal to switch the power switch to an ON state in response to an output voltage signal. The adjustable voltage reference circuit is coupled to adjust a voltage reference such that a bias winding voltage of the power converter is adjusted nonlinearly in response to a load that is to be coupled to the output of the power converter.

Abstract translation: 在轻/无负载条件下调节功率转换器的输出电压的示例性装置包括驱动电路，反馈电路和可调电压参考电路。 驱动电路被耦合以输出驱动信号，以在ON状态和OFF状态之间切换电力开关，以调节功率转换器的输出。 反馈电路耦合到驱动器电路，并且还被耦合以输出使能信号，以响应于输出电压信号将功率开关切换到ON状态。 耦合可调电压参考电路以调整电压参考，使得响应于要耦合到功率转换器的输出的负载，非线性地调整功率转换器的偏置绕组电压。

公开(公告)号：US07995359B2

公开(公告)日：2011-08-09

申请号：US12366574

申请日：2009-02-05

Applicant: Alex B. Djenguerian ,  Leif Lund

Inventor： Alex B. Djenguerian ,  Leif Lund

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M1/08 ,  H02M3/33507 ,  H02M2001/0009 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10T307/406

Abstract: A control circuit for use in a power converter with an unregulated dormant mode of operation includes a drive signal generator coupled to generate a drive signal to control switching of a power switch in response to an energy requirement of one or more loads to be coupled to the power converter output. An unregulated dormant mode control circuit is included and is coupled to render dormant the drive signal generator when the energy requirement of the one or more loads falls below a threshold for more than a first period of time. The unregulated dormant mode control circuit is coupled to power up the drive signal generator after a second period of time has elapsed. The drive signal generator is coupled to again be responsive to changes in the energy requirement of the one or more loads after the second period of time has elapsed.

Abstract translation: 用于具有未调节的休眠模式的功率转换器的控制电路包括驱动信号发生器，其被耦合以产生驱动信号，以响应于要耦合到所述功率开关的一个或多个负载的能量需求来控制功率开关的切换 电源转换器输出。 包括未调节的休眠模式控制电路，并且当所述一个或多个负载的能量需求低于阈值超过第一时间段时，耦合以使驱动信号发生器休眠。 未调节的休眠模式控制电路被耦合以在经过第二时间段之后对驱动信号发生器供电。 驱动信号发生器被耦合以再次响应于经过第二时间段之后的一个或多个负载的能量需求的变化。