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11.发明授权公开(公告)号：US07923973B2
公开(公告)日：2011-04-12
申请号：US12210854
申请日：2008-09-15
申请人： Arthur B. Odell
发明人： Arthur B. Odell
CPC分类号： H02M1/12 , H02M1/4225 , H02M3/156 , Y02B70/126
摘要： A method and apparatus for controlling a power converter. In one aspect, a controller for use in a power converter includes a first calculator coupled to determine an end of an on time of a power switch of the power converter by integrating an input current to output an on time signal representative of the end of the on time of the power switch. The controller also includes a second calculator coupled to determine an end of an off time of the power switch by integrating a difference between an input voltage and an output voltage to output an off time signal representative of the end of the off time of the power switch.
摘要翻译： 一种用于控制功率转换器的方法和装置。 一方面，用于功率转换器的控制器包括第一计算器，其耦合以通过积分输入电流来确定功率转换器的功率开关的导通时间的结束，以输出表示所述功率转换器的结束的导通时间信号 电源开关接通时间。 控制器还包括第二计算器，其耦合以通过积分输入电压和输出电压之间的差来确定功率开关的关闭时间的结束，以输出表示电源开关的关闭时间结束的关闭时间信号 。
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12.发明申请公开(公告)号：US20100067270A1
公开(公告)日：2010-03-18
申请号：US12210854
申请日：2008-09-15
申请人： Arthur B. Odell
发明人： Arthur B. Odell
CPC分类号： H02M1/12 , H02M1/4225 , H02M3/156 , Y02B70/126
摘要： A method and apparatus for controlling a power converter. In one aspect, a controller for use in a power converter includes a first calculator coupled to determine an end of an on time of a power switch of the power converter by integrating an input current to output an on time signal representative of the end of the on time of the power switch. The controller also includes a second calculator coupled to determine an end of an off time of the power switch by integrating a difference between an input voltage and an output voltage to output an off time signal representative of the end of the off time of the power switch.
摘要翻译： 一种用于控制功率转换器的方法和装置。 一方面，用于功率转换器的控制器包括第一计算器，其耦合以通过积分输入电流来确定功率转换器的功率开关的导通时间的结束，以输出表示所述功率转换器的结束的导通时间信号 电源开关接通时间。 控制器还包括第二计算器，其耦合以通过积分输入电压和输出电压之间的差来确定功率开关的关闭时间的结束，以输出表示电源开关的关闭时间结束的关闭时间信号 。
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13.发明授权Method and apparatus for extending the operating range of a flyforward converter 失效用于扩展快速转换器的工作范围的方法和装置公开(公告)号：US07403402B2
公开(公告)日：2008-07-22
申请号：US11724004
申请日：2007-03-13
IPC分类号： H02M3/335
CPC分类号： H02M3/335 , H02M3/33538 , H02M3/33569
摘要： A technique for extending the operating range of a flyforward converter to low input voltages. In one aspect, power converter includes a positive input supply rail and a negative input supply rail. A power converter input voltage is to be applied between the positive and negative input supply rails. A flyback energy transfer element having a flyback input winding and a forward energy transfer element having a forward input winding are also included. The flyback and forward input windings are coupled between the positive and negative input supply rails. Voltage control circuitry coupled to the forward energy transfer element is also included to reduce a voltage across the forward input winding, substantially to zero, when the power converter input voltage falls below a first threshold value.
摘要翻译： 一种用于将快速转换器的工作范围扩展到低输入电压的技术。 一方面，功率转换器包括正输入电源轨和负输入电源轨。 电源转换器输入电压要施加在正负输入电源轨之间。 还包括具有回扫输入绕组和具有正向输入绕组的正向能量转移元件的反激式能量转移元件。 反激式和正向输入绕组耦合在正和负输入电源轨之间。 还包括耦合到正向能量转移元件的电压控制电路，以便当功率转换器输入电压降到低于第一阈值时，将正向输入绕组两端的电压基本上降至零。
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14.发明授权公开(公告)号：US07368894B2
公开(公告)日：2008-05-06
申请号：US11336728
申请日：2006-01-20
申请人： Kent Wong , Arthur B. Odell , Stefan Bäurle
发明人： Kent Wong , Arthur B. Odell , Stefan Bäurle
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。
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公开(公告)号：US07193870B2
公开(公告)日：2007-03-20
申请号：US11191697
申请日：2005-07-28
申请人： Arthur B. Odell
发明人： Arthur B. Odell
IPC分类号： H02H7/122
CPC分类号： H02M1/34 , H02M3/335 , H02M3/33569 , H02M2001/344
摘要： Dissipative clamping apparatuses and methods for electrical circuits. In one aspect of the invention, In one aspect of the invention, a method includes switching a power supply input on an energy transfer element, regulating a power supply output by switching the power supply input on the energy transfer element, clamping a voltage on the energy transfer element to a clamp voltage and varying the clamp voltage in response to the power supply input. In another aspect, an electrical circuit includes a dissipative clamp circuit coupled to an input of the electrical circuit. An inductive element is coupled between the dissipative clamp circuit and an output of the electrical circuit. A switch is coupled in series with the inductive element. The dissipative clamp circuit is coupled to provide a clamp voltage across the inductive element, the clamp voltage is provided by the dissipative clamp circuit responsive to conditions at the input of the electrical circuit, the dissipative clamp circuit is coupled to maintain a voltage across the switch below a switch voltage limit.
摘要翻译： 用于电路的耗散夹紧装置和方法。 在本发明的一个方面，在本发明的一个方面，一种方法包括切换能量传递元件上的电源输入，通过切换能量传递元件上的电源输入来调节电源输出，钳位电压 能量传递元件到钳位电压并响应于电源输入而改变钳位电压。 在另一方面，电路包括耦合到电路输入的耗散钳位电路。 电感元件耦合在耗散钳位电路和电路的输出之间。 开关与电感元件串联耦合。 耗散钳位电路被耦合以在电感元件上提供钳位电压，钳位电压由消耗钳位电路提供，响应于电路输入端的条件，耗散钳位电路被耦合以保持开关两端的电压 低于开关电压限制。
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16.发明授权Method and apparatus for extending the operating range of a flyforward converter 有权用于扩展快速转换器的工作范围的方法和装置公开(公告)号：US07061778B2
公开(公告)日：2006-06-13
申请号：US10862223
申请日：2004-06-07
IPC分类号： H02M3/335
CPC分类号： H02M3/335 , H02M3/33538 , H02M3/33569
摘要： A technique for extending the operating range of a flyforward converter to low input voltages. In one aspect, power converter includes a positive input supply rail and a negative input supply rail. A power converter input voltage is to be applied between the positive and negative input supply rails. A flyback energy transfer element having a flyback input winding and a forward energy transfer element having a forward input winding are also included. The flyback and forward input windings are coupled between the positive and negative input supply rails. Voltage control circuitry coupled to the forward energy transfer element is also included to reduce a voltage across the forward input winding, substantially to zero, when the power converter input voltage falls below a first threshold value.
摘要翻译： 一种用于将快速转换器的工作范围扩展到低输入电压的技术。 一方面，功率转换器包括正输入电源轨和负输入电源轨。 电源转换器输入电压要施加在正负输入电源轨之间。 还包括具有回扫输入绕组和具有正向输入绕组的正向能量转移元件的反激式能量转移元件。 反激式和正向输入绕组耦合在正和负输入电源轨之间。 还包括耦合到正向能量转移元件的电压控制电路，以便当功率转换器输入电压降到低于第一阈值时，将正向输入绕组两端的电压基本上降至零。
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公开(公告)号：US06980451B2
公开(公告)日：2005-12-27
申请号：US10816069
申请日：2004-03-30
申请人： Arthur B. Odell
发明人： Arthur B. Odell
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。
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公开(公告)号：US08611116B2
公开(公告)日：2013-12-17
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
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且响应于开关的接通时间超过阈值时间而增加开关周期。
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19.发明授权公开(公告)号：US08593127B2
公开(公告)日：2013-11-26
申请号：US13486862
申请日：2012-06-01
申请人： Arthur B. Odell
发明人： Arthur B. Odell
CPC分类号： H02M1/12 , H02M1/4225 , H02M3/156 , Y02B70/126
摘要： A power converter includes a power switch, an energy storage element, a driver, a first calculator, and a second calculator. The first calculator coupled to determine an end of an on time of a power switch of the power converter by integrating an input current to output an on time signal representative of the end of the on time of the power switch. The second calculator coupled to determine an end of an off time of the power switch by integrating a difference between an input voltage and an output voltage to output an off time signal representative of the end of the off time of the power switch. The driver controls the power switch such that an input current of the power converter is substantially proportional to an input voltage of the power converter in response to the on time signal and the off time signal.
摘要翻译： 电力转换器包括电源开关，能量存储元件，驱动器，第一计算器和第二计算器。 第一计算器通过积分输入电流来输出表示电源开关的接通时间的接通时间信号来确定电力转换器的电源开关的接通时间的结束。 第二计算器通过积分输入电压和输出电压之间的差来确定电源开关的关闭时间的结束，以输出表示电源开关的关闭时间结束的关闭时间信号。 驱动器控制电源开关，使得功率转换器的输入电流响应于导通时间信号和关断时间信号基本上与功率转换器的输入电压成比例。
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公开(公告)号：US08531853B2
公开(公告)日：2013-09-10
申请号：US13193434
申请日：2011-07-28
CPC分类号： H02M3/33515 , H02M3/156 , H02M3/33507
摘要： An example integrated circuit controller includes a pulse width modulation (PWM) circuit and a timing circuit. The PWM circuit controls a switch to regulate an output of a 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 includes a timing capacitor where the switching period of the clock signal is equal to a charging time that the timing capacitor charges to an upper reference voltage plus a discharging time that the timing capacitor discharges to a lower reference voltage. The timing circuit increases the charging time of the timing capacitor by decreasing a rate at which the timing capacitor is charged to increase the switching period of the clock signal if an on time of the switch is greater than or equal to a threshold time.
摘要翻译： 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，并且包括定时电容器，其中时钟信号的开关周期等于定时电容器充电到较高参考电压加上定时电容器放电到较低参考电压的放电时间的充电时间 。 如果开关的接通时间大于或等于阈值时间，则定时电路通过降低定时电容器被充电的速率来增加定时电容器的充电时间，以增加时钟信号的开关周期。
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