公开(公告)号：US20130027990A1

公开(公告)日：2013-01-31

申请号：US13193411

申请日：2011-07-28

申请人： Stefan Bäurle ,  Guangchao Darson Zhang ,  Arthur B. Odell ,  Mingming Mao ,  Michael Yue Zhang ,  Edward Deng

发明人： Stefan Bäurle ,  Guangchao Darson Zhang ,  Arthur B. Odell ,  Mingming Mao ,  Michael Yue Zhang ,  Edward Deng

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M1/12

摘要： An example integrated circuit controller for use in a switching power supply includes a pulse width modulation (PWM) circuit and a timing circuit. The PWM circuit controls a switch to regulate an output of the power supply in response to a switch current flowing through the switch and in response to a clock signal having a switching period. The timing circuit provides the clock signal and increases the switching period in response to an on time of the switch exceeding a threshold time.

摘要翻译： 用于开关电源的示例性集成电路控制器包括脉宽调制（PWM）电路和定时电路。 PWM电路控制开关以响应于流过开关的开关电流并且响应于具有开关周期的时钟信号来调节电源的输出。 定时电路提供时钟信号，并响应于开关的接通时间超过阈值时间而增加开关周期。

公开(公告)号：US08355266B2

公开(公告)日：2013-01-15

申请号：US13398000

申请日：2012-02-16

申请人： Alex B. Djenguerian ,  Arthur B. Odell ,  Henson Wu

发明人： Alex B. Djenguerian ,  Arthur B. Odell ,  Henson Wu

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M3/156 ,  H02M3/33507 ,  H02M2001/0045

摘要： A controller for use in a power converter includes a control circuit to be coupled to a current controller coupled to an energy transfer element. A first, second or third current is enabled in the current controller in response to the control circuit. The first current is substantially zero, the second current is greater than the third current, and the third current is greater than the first current. The third current only partially discharges a capacitance coupled to a terminal coupled between the energy transfer element and the current controller. A first feedback circuit coupled to the control circuit generates a first feedback signal after a full discharge pulse of current through the current controller. A second feedback circuit coupled to the control circuit generates a second feedback signal after a partial discharge pulse of current through the current controller.

摘要翻译： 用于功率转换器的控制器包括耦合到耦合到能量传递元件的电流控制器的控制电路。 响应于控制电路，在电流控制器中使能第一，第二或第三电流。 第一电流基本为零，第二电流大于第三电流，第三电流大于第一电流。 第三电流仅部分地放电耦合到耦合在能量传递元件和电流控制器之间的端子的电容。 耦合到控制电路的第一反馈电路在通过电流控制器的电流的完全放电脉冲之后产生第一反馈信号。 耦合到控制电路的第二反馈电路在通过电流控制器的电流的局部放电脉冲之后产生第二反馈信号。

公开(公告)号：US08339811B2

公开(公告)日：2012-12-25

申请号：US13293042

申请日：2011-11-09

申请人： Alex B. Djenguerian ,  Arthur B. Odell ,  Henson Wu

发明人： Alex B. Djenguerian ,  Arthur B. Odell ,  Henson Wu

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M3/335

摘要： An output voltage sensor for use in a power converter controller includes a first pulse sampler circuit coupled to receive a feedback signal representative of an output of a power converter. The first pulse sampler circuit is coupled to capture a first peak voltage representative of a second peak of a ringing voltage of the feedback signal at a first time in the feedback signal. A second pulse sampler circuit is coupled to receive the feedback signal representative of the output of the power converter. The second pulse sampler circuit is coupled to capture a second peak voltage representative of the second peak of the ringing voltage of the feedback signal at a second time in the feedback signal. The output voltage sensor is coupled to output a change signal to a drive circuit of the power converter controller in response to the first and second peak voltages.

摘要翻译： 用于功率转换器控制器的输出电压传感器包括耦合以接收表示功率转换器的输出的反馈信号的第一脉冲采样器电路。 第一脉冲采样器电路被耦合以在反馈信号中的第一时间捕获表示反馈信号的振铃电压的第二峰值的第一峰值电压。 第二脉冲采样器电路被耦合以接收表示功率转换器的输出的反馈信号。 第二脉冲采样器电路被耦合以在反馈信号中的第二时间捕获代表反馈信号的振铃电压的第二峰值的第二峰值电压。 输出电压传感器被耦合以响应于第一和第二峰值电压将变化信号输出到功率转换器控制器的驱动电路。

公开(公告)号：US08194423B2

公开(公告)日：2012-06-05

申请号：US13102986

申请日：2011-05-06

申请人： Balu Balakrishnan ,  Arthur B. Odell

发明人： Balu Balakrishnan ,  Arthur B. Odell

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/335 ,  H02M3/33515 ,  H02M2001/0035 ,  Y02B70/16

摘要： An example controller for use in a power supply regulator includes a switch signal generator, a modulation circuit, and a multi-cycle modulator circuit. The modulation circuit modulates the duty cycle of a pulse width modulated switching signal to provide a fixed peak switching current in the switch during light load conditions and a variable peak switching current during load conditions other than the light load condition. The multi-cycle modulator circuit enables the switch signal generator to provide a switch signal uninterrupted if the load condition is other than the light load condition and disables the switch signal generator for a first time period and then enables the switch signal generator for a second time period when the load condition is the light load condition. The multi-cycle modulator circuit adjusts the first time period in response to the feedback signal to regulate the output.

摘要翻译： 用于电源调节器的示例性控制器包括开关信号发生器，调制电路和多周期调制器电路。 调制电路调制脉冲宽度调制开关信号的占空比，以在轻负载条件下在开关中提供固定的峰值开关电流，以及在轻负载条件之外的负载条件下的可变峰值开关电流。 如果负载条件不是轻负载状态，则多循环调制器电路使得开关信号发生器不间断地提供开关信号，并且在第一时间段内禁用开关信号发生器，然后再次使能开关信号发生器 负载条件为轻负载条件时的周期。 多周期调制器电路响应于反馈信号调整第一时间段以调节输出。

公开(公告)号：US20120014141A1

公开(公告)日：2012-01-19

申请号：US12835653

申请日：2010-07-13

申请人： Ionut A. Nania ,  Arthur B. Odell

发明人： Ionut A. Nania ,  Arthur B. Odell

IPC分类号： H02M3/335

CPC分类号： H02M3/33546 ,  H02M1/36 ,  H02M3/335

摘要： A reset voltage circuit for a forward power converter includes a reset capacitor and a memory capacitor. The reset capacitor is to be coupled to recycle energy from a primary winding of a transformer to an input bulk capacitor during a resetting of the transformer. The memory capacitor is to be coupled to store a first voltage equal to an input voltage of the power converter when the input voltage is at a steady-state value. The memory capacitor is further to set a voltage across the primary winding during the resetting of the transformer to a magnitude greater than or equal to the first voltage when the input voltage of the forward power converter drops below the steady-state value.

摘要翻译： 用于正向功率转换器的复位电压电路包括复位电容器和存储电容器。 在复位变压器期间，复位电容器被耦合以将来自变压器的初级绕组的能量再循环到输入大容量电容器。 当输入电压处于稳态值时，存储器电容器被耦合以存储等于功率转换器的输入电压的第一电压。 当正向功率转换器的输入电压低于稳态值时，存储电容进一步在变压器复位期间将初级绕组两端的电压设置为大于或等于第一电压的幅度。

公开(公告)号：US20110211373A1

公开(公告)日：2011-09-01

申请号：US13102986

申请日：2011-05-06

申请人： Balu Balakrishnan ,  Arthur B. Odell

发明人： Balu Balakrishnan ,  Arthur B. Odell

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/335 ,  H02M3/33515 ,  H02M2001/0035 ,  Y02B70/16

摘要： An example controller for use in a power supply regulator includes a switch signal generator, a modulation circuit, and a multi-cycle modulator circuit. The modulation circuit modulates the duty cycle of a pulse width modulated switching signal to provide a fixed peak switching current in the switch during light load conditions and a variable peak switching current during load conditions other than the light load condition. The multi-cycle modulator circuit enables the switch signal generator to provide a switch signal uninterrupted if the load condition is other than the light load condition and disables the switch signal generator for a first time period and then enables the switch signal generator for a second time period when the load condition is the light load condition. The multi-cycle modulator circuit adjusts the first time period in response to the feedback signal to regulate the output.

摘要翻译： 用于电源调节器的示例性控制器包括开关信号发生器，调制电路和多周期调制器电路。 调制电路调制脉冲宽度调制开关信号的占空比，以在轻负载条件下提供开关中的固定峰值开关电流，以及在轻负载条件之外的负载条件期间可变峰值开关电流。 如果负载条件不是轻负载状态，则多循环调制器电路使得开关信号发生器不间断地提供开关信号，并且在第一时间段内禁用开关信号发生器，然后再次使能开关信号发生器 负载条件为轻负载条件时的周期。 多周期调制器电路响应于反馈信号调整第一时间段以调节输出。

公开(公告)号：US07880451B2

公开(公告)日：2011-02-01

申请号：US12484007

申请日：2009-06-12

申请人： Arthur B. Odell

发明人： Arthur B. Odell

IPC分类号： G05F1/10 ,  G05F1/652

CPC分类号： H02M3/1588 ,  H02M3/155 ,  H02M2001/0045 ,  H02M2001/009 ,  Y02B70/1466 ,  Y10T307/406 ,  Y10T307/461 ,  Y10T307/469 ,  Y10T307/484

摘要： Techniques are disclosed to control a power converter with multiple output voltages. One example regulated power converter includes a an energy transfer element coupled between a power converter input and first and second power converter outputs. A switch is coupled between the power converter input and the energy transfer element such that switching of the switch causes a first output voltage to be generated at the first power converter output and a second output voltage to be generated at the second power converter output. A current in the energy transfer element is coupled to increase when a voltage across the energy transfer element is a difference between an input voltage at the power converter input and the first output voltage. The current in the energy transfer element is coupled to decrease when the voltage across the energy transfer element is a sum of the first and second output voltages.

摘要翻译： 公开了用于控制具有多个输出电压的功率转换器的技术。 一个示例性调节功率转换器包括耦合在功率转换器输入和第一和第二功率转换器输出之间的能量传递元件。 开关耦合在功率转换器输入和能量传递元件之间，使得开关的切换导致在第一功率转换器输出端产生第一输出电压，并在第二功率转换器输出端产生第二输出电压。 当能量传递元件两端的电压是功率转换器输入端的输入电压与第一输出电压之差时，能量传递元件中的电流被耦合以增加。 当能量传递元件上的电压是第一和第二输出电压的和时，能量传递元件中的电流被耦合以减小。

公开(公告)号：US20090251116A1

公开(公告)日：2009-10-08

申请号：US12484007

申请日：2009-06-12

申请人： Arthur B. Odell

发明人： Arthur B. Odell

IPC分类号： G05F1/577

CPC分类号： H02M3/1588 ,  H02M3/155 ,  H02M2001/0045 ,  H02M2001/009 ,  Y02B70/1466 ,  Y10T307/406 ,  Y10T307/461 ,  Y10T307/469 ,  Y10T307/484

摘要： Techniques are disclosed to control a power converter with multiple output voltages. One example regulated power converter includes a an energy transfer element coupled between a power converter input and first and second power converter outputs. A switch is coupled between the power converter input and the energy transfer element such that switching of the switch causes a first output voltage to be generated at the first power converter output and a second output voltage to be generated at the second power converter output. A current in the energy transfer element is coupled to increase when a voltage across the energy transfer element is a difference between an input voltage at the power converter input and the first output voltage. The current in the energy transfer element is coupled to decrease when the voltage across the energy transfer element is a sum of the first and second output voltages.

摘要翻译： 公开了用于控制具有多个输出电压的功率转换器的技术。 一个示例性调节功率转换器包括耦合在功率转换器输入和第一和第二功率转换器输出之间的能量传递元件。 开关耦合在功率转换器输入和能量传递元件之间，使得开关的切换导致在第一功率转换器输出端产生第一输出电压，并在第二功率转换器输出端产生第二输出电压。 当能量传递元件两端的电压是功率转换器输入端的输入电压与第一输出电压之差时，能量传递元件中的电流被耦合以增加。 当能量传递元件上的电压是第一和第二输出电压的和时，能量传递元件中的电流被耦合以减小。

公开(公告)号：US07397680B2

公开(公告)日：2008-07-08

申请号：US11582642

申请日：2006-10-17

申请人： Arthur B. Odell

发明人： Arthur B. Odell

IPC分类号： H02M7/04

CPC分类号： H02J7/0016 ,  H02M1/10 ,  H02M1/32 ,  H02M2001/0032 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02B70/16

摘要： A circuit that provides a method and apparatus to actively balance capacitor leakage current from series stacked capacitors and disconnects itself when stacked capacitors are configured for doubler operation. In one embodiment, the active circuit includes high voltage low current transistors, such as for example a PNP bipolar transistor and an NPN bipolar transistor, that are configured in a sink-source voltage follower arrangement with the bases of the transistors connected to a voltage divider network and referenced to a fraction of a DC input voltage with a very high impedance, low dissipative resistor divider network. In one embodiment, the emitters of the PNP and NPN transistors are both tied to the connection point between capacitors in the stack and provide an active sink-source drive, which maintains the voltage at this point to be bounded by the input reference voltages of sink-source followers.

摘要翻译： 一种电路，提供了一种方法和装置，用于主动平衡串联堆叠电容器的电容器漏电流，并且当层叠电容器配置为倍增器操作时自身断开。 在一个实施例中，有源电路包括高电压低电流晶体管，例如PNP双极晶体管和NPN双极晶体管，其配置在宿源电压跟随器结构中，晶体管的基极连接到分压器 网络并以具有非常高阻抗，低耗散电阻分压网络的直流输入电压的一小部分参考。 在一个实施例中，PNP和NPN晶体管的发射极都被连接到堆叠中的电容器之间的连接点，并且提供有源宿源驱动器，其保持在该点处的电压由接收器的输入参考电压 来源追随者。

公开(公告)号：US07310048B2

公开(公告)日：2007-12-18

申请号：US11121808

申请日：2005-05-04

申请人： Balu Balakrishnan ,  Arthur B. Odell

发明人： Balu Balakrishnan ,  Arthur B. Odell

IPC分类号： G08B21/00

CPC分类号： G01R19/16552 ,  H02J5/00 ,  H02J7/02 ,  H02J7/025

摘要： Techniques are disclosed to sense a current in a circuit. For instance, current sense circuit according to the teachings of the present invention includes a current sense resistor coupled to an input of the current sense circuit. The current sense resistor is coupled to receive a current to be sensed from the input of the current sense circuit. The current to be sensed is converted to a current sense voltage. A first PN junction diode is coupled to the current sense resistor. A light emitting diode (LED) is coupled to the first PN junction diode to provide a current sense threshold substantially proportional to a difference between a forward voltage drop of the LED and a forward voltage drop of the first PN junction diode. The first PN junction diode is coupled to be biased from the forward voltage drop of the LED. The LED is coupled to the current sense resistor to generate an output when the current sense voltage from the current sense resistor reaches the current sense threshold.

摘要翻译： 公开了用于感测电路中的电流的技术。 例如，根据本发明的教导的电流检测电路包括耦合到电流检测电路的输入的电流检测电阻器。 电流检测电阻器被耦合以从电流检测电路的输入接收要感测的电流。 要感测的电流被转换为电流感测电压。 第一PN结二极管耦合到电流检测电阻器。 发光二极管（LED）耦合到第一PN结二极管，以提供基本上与LED的正向压降和第一PN结二极管的正向压降之间的差成比例的电流检测阈值。 第一PN结二极管被耦合以从LED的正向压降偏置。 当来自电流检测电阻的电流感测电压达到电流检测阈值时，LED耦合到电流检测电阻器以产生输出。