公开(公告)号：US4147900A

公开(公告)日：1979-04-03

申请号：US785680

申请日：1977-04-07

申请人： Mauro L. Gaetano ,  Ambroz K. Skrovanek

发明人： Mauro L. Gaetano ,  Ambroz K. Skrovanek

IPC分类号： H04B3/08

CPC分类号： H04B3/08

摘要： A telephone network protective coupler for connecting terminal equipment to a telephone central office by means of a telephone line. The coupler includes two hybrid circuits which are interconnected to form a transmitting path and a receiving path. A power limiter in the transmitting path can be programmed remotely by selection of an external programming resistor without the direct introduction of noise into the transmitting path. The programming feature permits the gain of the transmitting portion of the device to be varied in steps from 0 to -12dB., and the maximum power output to be varied correspondingly in steps from 0 to -12 dBm. in order to arrive at an optimum signal power level of -12dBm. at the central office. The power limiter includes a controller gain amplifier for varying the attenuation of the transmitting path to a.c. signals, a remotely adjustable attenuator connected to a d.c. voltage source, and a gain control circuit connected to the amplifier and to the attenuator and responsive to adjustment of the attenuator for controling the gain of the amplifier. The power limiter further includes a rectifier for rectifying the a.c. signals after passage through the amplifier, and a maximum power control circuit connected to the rectifier and the attenuator and responsive to the adjustment of the attenuator for keeping the ratio of the amplitude of the rectified a.c. signals to the output voltage of the attenuator less than or substantially equal to a fixed constant.

摘要翻译： 一种电话网络保护耦合器，用于通过电话线将终端设备连接到电话中心局。 耦合器包括互连以形成传输路径和接收路径的两个混合电路。 传输路径中的功率限制器可以通过选择外部编程电阻器进行远程编程，而不会将噪声直接引入到传输路径中。 编程功能允许器件的发送部分的增益从0到-12dB的步进变化，并且最大功率输出将相应地从0变化到-12dBm。 以达到-12dBm的最佳信号功率电平。 在中央办公室。 功率限制器包括一个控制器增益放大器，用于将发送路径的衰减改变为a.c. 信号，一个远程可调衰减器连接到直流 电压源和连接到放大器和衰减器的增益控制电路，并响应衰减器的调节来控制放大器的增益。 功率限制器还包括整流器，用于整流交流 通过放大器的信号，以及连接到整流器和衰减器的最大功率控制电路，并且响应于衰减器的调整，以保持整流的交流电压的幅度比。 信号到衰减器的输出电压小于或基本上等于固定常数。

公开(公告)号：US20120299501A1

公开(公告)日：2012-11-29

申请号：US13488580

申请日：2012-06-05

申请人： Michael A. Kost ,  Mauro L. Gaetano ,  John L. Melanson

发明人： Michael A. Kost ,  Mauro L. Gaetano ,  John L. Melanson

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0824 ,  Y02B20/346

摘要： In at least one embodiment, a controller allows triac-based dimmer to properly function and dim a load whose voltage is regulated by a switching power converter. In at least one embodiment, the switching power converter includes a switch to control voltage conversion of an input voltage to the switching power converter, wherein phase delays are introduced in the input voltage by a triac-based dimmer during a dimming period. In at least one embodiment, the controller is configured to control the switch of the switching power converter to establish an input resistance of the switching power converter during a dimming portion of the input voltage, wherein the input resistance allows the triac-based dimmer to phase modulate a supply voltage to the dimmer so that an output voltage of the dimmer has a substantially uninterrupted phase delay during each half-cycle of the supply voltage during the dimming period.

摘要翻译： 在至少一个实施例中，控制器允许基于triac的调光器正确地对其电压由开关功率转换器调节的负载进行功能和调光。 在至少一个实施例中，开关功率转换器包括用于控制输入电压到开关功率转换器的电压转换的开关，其中在调光期间通过基于三端双向可控硅的调光器在输入电压中引入相位延迟。 在至少一个实施例中，控制器被配置为控制开关功率转换器的开关，以在输入电压的调光部分期间建立开关功率转换器的输入电阻，其中输入电阻允许基于triac的调光器相位 调制到调光器的电源电压，使得调光器的输出电压在调光期间的电源电压的每个半周期期间具有基本上不间断的相位延迟。

公开(公告)号：US20100327765A1

公开(公告)日：2010-12-30

申请号：US12495720

申请日：2009-06-30

申请人： John L. Melanson ,  Mauro L. Gaetano ,  Eric King ,  Robert Grisamore ,  Zhaohui He

发明人： John L. Melanson ,  Mauro L. Gaetano ,  Eric King ,  Robert Grisamore ,  Zhaohui He

IPC分类号： H05B41/36 ,  H02M3/335

CPC分类号： H02M3/3374

摘要： A cascaded power converter having an auxiliary power supply operated from the second switching power stage provides efficient operation by activating the auxiliary power supply early in the startup process. A low energy transfer operating mode is initiated in the second switching power stage to charge the auxiliary power supply output without generating significant disruption at the load. After the first switching power stage is started and the intermediate node voltage has increased to a level sufficient to operate the second switching power stage, the final switching power stage enters a normal operating mode. The low energy transfer operating mode has a substantially reduced switching rate and pulse width from that of the normal operating mode.

摘要翻译： 具有从第二开关功率级操作的辅助电源的级联功率转换器通过在启动过程中提前启动辅助电源来提供有效的操作。 在第二开关功率级中启动低能量传递操作模式以对辅助电源输出进行充电，而不会在负载下产生显着的中断。 在第一开关功率级开始并且中间节点电压已经增加到足以操作第二开关功率级的电平之后，最终开关功率级进入正常工作模式。 低能量转移操作模式与正常操作模式相比具有显着降低的开关速率和脉冲宽度。

公开(公告)号：US08847719B2

公开(公告)日：2014-09-30

申请号：US12241973

申请日：2008-09-30

申请人： John L. Melanson ,  Mauro L. Gaetano

发明人： John L. Melanson ,  Mauro L. Gaetano

IPC分类号： H01F17/06 ,  H01F21/02 ,  H01F27/28 ,  H01F27/30 ,  H01F27/24 ,  H01F3/10 ,  H01F3/14 ,  H01F38/02 ,  H01F38/08

CPC分类号： H01F38/02 ,  H01F3/10 ,  H01F3/14 ,  H01F38/08 ,  H01F2038/026 ,  H02M1/42 ,  H02M2001/0032 ,  Y02B70/12 ,  Y02B70/16

摘要： A transformer includes a core having a first leg, a second leg and a third leg, a split primary winding including first turns about the first leg electrically coupled with second turns about the third leg, and a secondary winding about the second leg. Magnetic flux linking the first turns of the split primary winding and magnetic flux linking the second turns of the primary winding link the secondary winding.

摘要翻译： 变压器包括具有第一腿部，第二腿部和第三腿部的芯部，分离的初级绕组，包括围绕第一腿部的第一匝，第一腿部围绕第三腿部与第二匝电耦合，以及围绕第二腿部的次级绕组。 将分束初级绕组的第一匝和连接初级绕组的第二匝的磁通的磁通链接到次级绕组。

公开(公告)号：US20090190379A1

公开(公告)日：2009-07-30

申请号：US12242298

申请日：2008-09-30

申请人： John L Melanson ,  Mauro L. Gaetano ,  Karl Thompson

发明人： John L Melanson ,  Mauro L. Gaetano ,  Karl Thompson

IPC分类号： H02M3/335

CPC分类号： H02M3/156 ,  H02M2001/0006 ,  Y10S323/901

摘要： A boosted auxiliary winding power supply for a switched-power converter circuit provides operating voltage for control and other circuits early in the start-up phase of converter operation. A boost circuit has an input coupled to the auxiliary winding to boost the voltage available from the auxiliary winding at least during start-up of the switched-power converter. The boost thereby provides a voltage that is greater than the voltage across the auxiliary winding during start-up of the switched-power converter. The boost circuit may be actively switched at a rate higher than a switching rate of the switched-power converter, to increase a rate of rise of the operating voltage. Polarity information, which may be provided from the switched-power converter control circuit, can be used to actively rectify the output of the auxiliary winding.

摘要翻译： 用于开关电源转换器电路的升压辅助绕组电源在转换器运行的启动阶段的早期提供控制和其他电路的工作电压。 升压电路具有耦合到辅助绕组的输入，以至少在开关功率转换器的启动期间升高从辅助绕组可用的电压。 因此，在开关功率转换器的启动期间，升压提供大于辅助绕组上的电压的电压。 升压电路可以以高于开关功率转换器的开关速率的速率主动切换，以增加工作电压的上升速率。 可以从开关电源转换器控制电路提供的极性信息可用于主动地校正辅助绕组的输出。

公开(公告)号：US08222872B1

公开(公告)日：2012-07-17

申请号：US12493045

申请日：2009-06-26

申请人： John L. Melanson ,  Mauro L. Gaetano ,  Larry L. Harris

发明人： John L. Melanson ,  Mauro L. Gaetano ,  Larry L. Harris

IPC分类号： G05F1/613 ,  H02M7/162

CPC分类号： H02M3/155 ,  H02M3/33561 ,  H02M2001/0006

摘要： A auxiliary power supply having a selectable operating mode raises efficiency of a switched-power converter. By selectably controlling the input/output behavior of the auxiliary power supply receiving a voltage from an auxiliary winding of one of the power converter magnetic elements, more efficient operation of the auxiliary power supply over the full variation range of the input line voltage is achieved. By selecting the operating mode according to the relationship between the required auxiliary power supply output and the voltage available across the auxiliary winding under current operating conditions, the turns ratio of the auxiliary winding and other circuit parameters can be optimized for efficiency. Selection of the operating mode may be made by detecting the output or input voltage of the multiplier, and the selection may be performed under hysteretic control so that the variation in auxiliary power supply output voltage is reduced dynamically.

摘要翻译： 具有可选操作模式的辅助电源提高了开关电源转换器的效率。 通过可选择地控制从功率转换器磁性元件之一的辅助绕组接收电压的辅助电源的输入/输出特性，实现了在输入线电压的整个变化范围内辅助电源的更有效的操作。 通过根据所需辅助电源输出与辅助绕组在当前工作条件下可用的电压之间的关系选择工作模式，辅助绕组和其他电路参数的匝数比可以优化效率。 可以通过检测乘法器的输出或输入电压来进行操作模式的选择，并且可以在滞后控制下执行选择，使得辅助电源输出电压的变化被动态地减小。

公开(公告)号：US08212491B2

公开(公告)日：2012-07-03

申请号：US12347138

申请日：2008-12-31

申请人： Michael A. Kost ,  Mauro L. Gaetano ,  John L. Melanson

发明人： Michael A. Kost ,  Mauro L. Gaetano ,  John L. Melanson

IPC分类号： H05B41/16

CPC分类号： H05B33/0815 ,  H05B33/0824 ,  Y02B20/346

摘要： In at least one embodiment, a controller allows triac-based dimmer to properly function and dim a load whose voltage is regulated by a switching power converter. In at least one embodiment, the switching power converter includes a switch to control voltage conversion of an input voltage to the switching power converter, wherein phase delays are introduced in the input voltage by a triac-based dimmer during a dimming period. In at least one embodiment, the controller is configured to control the switch of the switching power converter to establish an input resistance of the switching power converter during a dimming portion of the input voltage, wherein the input resistance allows the triac-based dimmer to phase modulate a supply voltage to the dimmer so that an output voltage of the dimmer has a substantially uninterrupted phase delay during each half-cycle of the supply voltage during the dimming period.

摘要翻译： 在至少一个实施例中，控制器允许基于triac的调光器正确地对其电压由开关功率转换器调节的负载进行功能和调光。 在至少一个实施例中，开关功率转换器包括用于控制输入电压到开关功率转换器的电压转换的开关，其中在调光期间通过基于三端双向可控硅的调光器在输入电压中引入相位延迟。 在至少一个实施例中，控制器被配置为控制开关功率转换器的开关，以在输入电压的调光部分期间建立开关功率转换器的输入电阻，其中输入电阻允许基于triac的调光器相位 调制到调光器的电源电压，使得调光器的输出电压在调光期间的电源电压的每个半周期期间具有基本上不间断的相位延迟。

公开(公告)号：US08014176B2

公开(公告)日：2011-09-06

申请号：US12242199

申请日：2008-09-30

申请人： John L. Melanson ,  Mauro L. Gaetano

发明人： John L. Melanson ,  Mauro L. Gaetano

IPC分类号： H02M3/335

CPC分类号： H01F38/02 ,  H01F3/10 ,  H01F3/14 ,  H01F38/08 ,  H01F2038/026 ,  H02M1/42 ,  H02M2001/0032 ,  Y02B70/12 ,  Y02B70/16

摘要： A resonant switching power converter having burst mode transitioning operates during low or zero load conditions with reduced audible noise and component stresses, while improving efficiency. Pulse bursts are generated with a beginning and/or ending pulse duration that differs from mid-burst pulse durations, in order to reduce an amplitude of transients otherwise generated at the beginning and/or end of the bursts. Alternatively, the spacing between the pulses at the beginning and/or end of the bursts may differ from the spacing between the pulses in the middle of the bursts to reduce the transient(s). A number of pulses at the beginning and/or end of the burst can also be set with gradually varying durations, to further reduce component stress and audible vibration in a transformer that couples the resonant tank to the output of the converter.

摘要翻译： 具有突发模式转换的谐振开关功率转换器在低或零负载条件下操作，同时提高效率，同时具有降低的可听噪声和分量应力。 产生具有不同于脉冲串脉冲持续时间的开始和/或结束脉冲持续时间的脉冲脉冲串，以便减少在脉冲串的开始和/或结束时另外产生的瞬变幅度。 或者，脉冲串的开始和/或结束处的脉冲之间的间隔可能与脉冲串中间的脉冲之间的间隔不同，以减少瞬态。 在脉冲串的开始和/或结束处的脉冲数也可以设定为具有逐渐变化的持续时间，以进一步降低将谐振回路耦合到转换器的输出端的变压器中的分量应力和可听振动。

公开(公告)号：US08008898B2

公开(公告)日：2011-08-30

申请号：US12242298

申请日：2008-09-30

申请人： John L. Melanson ,  Mauro L. Gaetano ,  Karl Thompson

发明人： John L. Melanson ,  Mauro L. Gaetano ,  Karl Thompson

IPC分类号： G05F1/613

CPC分类号： H02M3/156 ,  H02M2001/0006 ,  Y10S323/901

摘要： A boosted auxiliary winding power supply for a switched-power converter circuit provides operating voltage for control and other circuits early in the start-up phase of converter operation. A boost circuit has an input coupled to the auxiliary winding to boost the voltage available from the auxiliary winding at least during start-up of the switched-power converter. The boost thereby provides a voltage that is greater than the voltage across the auxiliary winding during start-up of the switched-power converter. The boost circuit may be actively switched at a rate higher than a switching rate of the switched-power converter, to increase a rate of rise of the operating voltage. Polarity information, which may be provided from the switched-power converter control circuit, can be used to actively rectify the output of the auxiliary winding.

摘要翻译： 用于开关电源转换器电路的升压辅助绕组电源在转换器运行的启动阶段的早期提供控制和其他电路的工作电压。 升压电路具有耦合到辅助绕组的输入，以至少在开关功率转换器的启动期间升高从辅助绕组可用的电压。 因此，在开关功率转换器的启动期间，升压提供大于辅助绕组上的电压的电压。 升压电路可以以高于开关功率转换器的开关速率的速率主动切换，以增加工作电压的上升速率。 可以从开关电源转换器控制电路提供的极性信息可用于主动地校正辅助绕组的输出。

公开(公告)号：US20100020570A1

公开(公告)日：2010-01-28

申请号：US12242199

申请日：2008-09-30

申请人： John L. Melanson ,  Mauro L. Gaetano

发明人： John L. Melanson ,  Mauro L. Gaetano

IPC分类号： H02M3/337

CPC分类号： H01F38/02 ,  H01F3/10 ,  H01F3/14 ,  H01F38/08 ,  H01F2038/026 ,  H02M1/42 ,  H02M2001/0032 ,  Y02B70/12 ,  Y02B70/16

摘要： A resonant switching power converter having burst mode transitioning operates during low or zero load conditions with reduced audible noise and component stresses, while improving efficiency. Pulse bursts are generated with a beginning and/or ending pulse duration that differs from mid-burst pulse durations, in order to reduce an amplitude of transients otherwise generated at the beginning and/or end of the bursts. Alternatively, the spacing between the pulses at the beginning and/or end of the bursts may differ from the spacing between the pulses in the middle of the bursts to reduce the transient(s). A number of pulses at the beginning and/or end of the burst can also be set with gradually varying durations, to further reduce component stress and audible vibration in a transformer that couples the resonant tank to the output of the converter.

摘要翻译： 具有突发模式转换的谐振开关功率转换器在低或零负载条件下操作，同时提高效率，同时具有降低的可听噪声和分量应力。 产生具有不同于脉冲串脉冲持续时间的开始和/或结束脉冲持续时间的脉冲脉冲串，以便减少在脉冲串的开始和/或结束时另外产生的瞬变幅度。 或者，脉冲串的开始和/或结束处的脉冲之间的间隔可能与脉冲串中间的脉冲之间的间隔不同，以减少瞬态。 在脉冲串的开始和/或结束处的脉冲数也可以设定为具有逐渐变化的持续时间，以进一步降低将谐振回路耦合到转换器的输出端的变压器中的分量应力和可听振动。