公开(公告)号：US20130027996A1

公开(公告)日：2013-01-31

申请号：US13193434

申请日：2011-07-28

申请人： Stefan Bäurle ,  Guangchao Darson Zhang ,  Arthur B. Odell ,  Edward Deng

发明人： Stefan Bäurle ,  Guangchao Darson Zhang ,  Arthur B. Odell ,  Edward Deng

IPC分类号： H02M1/00

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。

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

IPC分类号： H02M3/335 ,  H02H7/122 ,  H02M1/00 ,  H02M7/757

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。

公开(公告)号：US08531853B2

公开(公告)日：2013-09-10

申请号：US13193434

申请日：2011-07-28

申请人： Stefan Bäurle ,  Guangchao Darson Zhang ,  Arthur B. Odell ,  Edward Deng

发明人： Stefan Bäurle ,  Guangchao Darson Zhang ,  Arthur B. Odell ,  Edward Deng

IPC分类号： H02M3/335 ,  H02M1/00 ,  H02M7/757 ,  H02H7/122

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。

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：US07049794B2

公开(公告)日：2006-05-23

申请号：US10986622

申请日：2004-11-12

申请人： Kent Wong ,  Arthur B. Odell ,  Stefan Bäurle

发明人： Kent Wong ,  Arthur B. Odell ,  Stefan Bäurle

IPC分类号： G05F1/652

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 embodiment, a voltage regulation circuit includes a current sense circuit having a current sense terminal to conduct a current to be sensed by the current sense circuit. A voltage difference between the current sense terminal and a voltage reference terminal is substantially fixed when the current to be sensed by the current sense circuit is substantially equal to a first current sense threshold. The voltage regulation circuit also includes a first impedance coupled between the current sense terminal and the voltage reference terminal to provide a second current sense threshold. The second current sense threshold is equal to a sum of the first current sense threshold and a current to flow through the first impedance. The voltage regulation circuit further includes a second impedance coupled between the current sense terminal and an input terminal. The input terminal has a voltage threshold relative to the voltage reference terminal that is different from a voltage at the current sense terminal by an amount that is a product of the second impedance and the second current threshold.

摘要翻译： 用于开关式电源的降低成本的电压调节电路。 在一个实施例中，电压调节电路包括具有电流检测端子的电流检测电路，以传导由电流感测电路感测的电流。 当电流检测电路要感测的电流基本上等于第一电流检测阈值时，电流检测端子与电压参考端子之间的电压差基本上是固定的。 电压调节电路还包括耦合在电流检测端子和电压参考端子之间的第一阻抗以提供第二电流检测阈值。 第二电流检测阈值等于第一电流检测阈值和流过第一阻抗的电流之和。 电压调节电路还包括耦合在电流感测端子和输入端子之间的第二阻抗。 输入端子具有相对于电压参考端子的电压阈值，该电压阈值与电流检测端子处的电压不同于第二阻抗和第二电流阈值的乘积量。

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

IPC分类号： G05F1/10 ,  G05F1/652 ,  G05F1/613

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。

公开(公告)号：US20120243277A1

公开(公告)日：2012-09-27

申请号：US13486862

申请日：2012-06-01

申请人： Arthur B. Odell

发明人： Arthur B. Odell

IPC分类号： H02M7/06

CPC分类号： H02M1/12 ,  H02M1/4225 ,  H02M3/156 ,  Y02B70/126

摘要： In one aspect, 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： 一方面，功率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。

公开(公告)号：US20120170327A1

公开(公告)日：2012-07-05

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：US08077484B2

公开(公告)日：2011-12-13

申请号：US12770500

申请日：2010-04-29

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： A controller for use in a power converter to detect changes in output voltage. An example controller includes a drive circuit to generate a switching signal. The switching signal is coupled to be received by a power switch to be coupled to an energy transfer element and an input of the power converter to control a transfer of energy from the input of the power converter to an output of the power converter. An output voltage sensor is coupled to the drive circuit and coupled to receive a feedback signal representative of the output of the power converter. The output voltage sensor includes first and second pulse sampler circuits. 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. 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 the drive circuit in response to the first and second peak voltages.

摘要翻译： 用于功率转换器中以检测输出电压变化的控制器。 示例性控制器包括用于产生切换信号的驱动电路。 开关信号被耦合以由功率开关接收以耦合到能量传递元件和功率转换器的输入端，以控制从功率转换器的输入到功率转换器的输出的能量传递。 输出电压传感器耦合到驱动电路并被耦合以接收代表功率转换器的输出的反馈信号。 输出电压传感器包括第一和第二脉冲采样器电路。 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向驱动电路输出改变信号。

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

IPC分类号： G05F1/70 ,  G05F1/575

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 。