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41. 发明授权

US5038053A Temperature-compensated integrated circuit for uniform current generation 失效
标题翻译：用于均匀电流产生的温度补偿集成电路
公开(公告)号：US5038053A
公开(公告)日：1991-08-06
申请号：US497996
申请日：1990-03-23
申请人： Alex B. Djenguerian , Ramanatha V. Balakrishnan
发明人： Alex B. Djenguerian , Ramanatha V. Balakrishnan
IPC分类号： G05F3/26
CPC分类号： G05F3/267
摘要： An integrated circuit has a first resistor and a second resistor. A base-emitter voltage differential is maintained across the first resistor to develop a first resistor current and a base-emitter voltage is maintained across the second resistor to develop a second resistor current. The first resistor current is mirrored and the second resistor current is subtracted from the mirrored current to obtain a reference current. The resistors have resistance values so that the products of each resistor current multiplied by its temperature coefficient are equal. The resulting reference current is temperature independent.
摘要翻译：集成电路具有第一电阻器和第二电阻器。在第一电阻器两端保持基极 - 发射极电压差，以产生第一电阻器电流，并且跨越第二电阻器保持基极 - 发射极电压以产生第二电阻器电流。第一个电阻电流被镜像，并从镜像电流中减去第二个电阻电流以获得参考电流。电阻器具有电阻值，使得每个电阻器电流乘以其温度系数的乘积相等。所得到的参考电流与温度无关。

42. 发明授权

US08482938B2 Method and apparatus providing a multi-function terminal for a power supply controller 有权
标题翻译：提供电源控制器的多功能端子的方法和装置
公开(公告)号：US08482938B2
公开(公告)日：2013-07-09
申请号：US12969406
申请日：2010-12-15
申请人： Balu Balakrishnan , Alex B. Djenguerian , Leif O. Lund
发明人： Balu Balakrishnan , Alex B. Djenguerian , Leif O. Lund
IPC分类号： H02M3/335
CPC分类号： H02M1/32 , H02M3/33507
摘要： A power supply controller circuit is disclosed. An example power supply controller circuit includes a control circuit coupled to generate a switching waveform to be used to regulate an output of a power supply. A current input circuit is coupled to receive a current representative of an input of the power supply. The current input circuit is to generate a sense signal in response to the current representative of the input of the power supply. A first comparator is coupled to the current input circuit to receive the sense signal. The first comparator coupled to generate a first signal in response to the sense signal being above a first threshold. An enable/disable logic circuit is coupled to the first comparator. The enable/disable logic circuit is coupled to deactivate the control circuit in response to the first signal.
摘要翻译：公开了电源控制器电路。示例性电源控制器电路包括耦合以产生用于调节电源的输出的开关波形的控制电路。电流输入电路被耦合以接收代表电源的输入的电流。电流输入电路是响应于表示电源输入的电流而产生感测信号。第一比较器耦合到电流输入电路以接收感测信号。第一比较器被耦合以响应于感测信号产生高于第一阈值的第一信号。使能/禁止逻辑电路耦合到第一比较器。启用/禁用逻辑电路被耦合以响应于第一信号去激活控制电路。

43. 发明授权

US08427124B2 Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权
标题翻译：用于在开关模式电源中用线电压维持恒定负载电流的方法和装置
公开(公告)号：US08427124B2
公开(公告)日：2013-04-23
申请号：US13193284
申请日：2011-07-28
申请人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews
发明人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews
IPC分类号： G05F1/40
CPC分类号： H02M3/33523 , H02M3/33507 , H02M2001/0009 , H03K17/0822
摘要： A method and apparatus of reducing peak current variation with changing input line voltage in a switch mode power supply is disclosed. An example method includes sensing a current through a switching device of the switch mode power supply. A variable current limit threshold is generated, which increases from a first level to a second level during an on time of the switching device. The current is compared to the variable current limit threshold. A feedback signal representative of an output voltage of the switch mode power supply is sensed. The switching device is controlled in response to the feedback signal and said comparing the current to the variable current limit threshold.
摘要翻译：公开了一种通过改变开关模式电源中的输入线电压来降低峰值电流变化的方法和装置。示例性方法包括感测通过开关模式电源的开关装置的电流。产生可变电流限制阈值，其在开关装置的接通时间期间从第一电平增加到第二电平。将电流与可变电流限制阈值进行比较。检测表示开关模式电源的输出电压的反馈信号。响应于反馈信号来控制开关装置，并且将电流与可变电流限制阈值进行比较。

44. 发明授权

US08355266B2 Apparatus and method for sensing of isolated output 失效
标题翻译：用于感测隔离输出的装置和方法
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。

45. 发明授权

US08339811B2 Apparatus and method for detecting a change in output voltage of an isolated power converter 失效
标题翻译：用于检测隔离电力转换器的输出电压变化的装置和方法
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。

46. 发明申请

US20120280670A1 OFF-LINE CONVERTER WITH DIGITAL CONTROL 失效
标题翻译：带数字控制的离线转换器
公开(公告)号：US20120280670A1
公开(公告)日：2012-11-08
申请号：US13552040
申请日：2012-07-18
申请人： Balu Balakrishnan , Alex B. Djenguerian , Leif O. Lund
发明人： Balu Balakrishnan , Alex B. Djenguerian , Leif O. Lund
IPC分类号： G05F1/10
CPC分类号： H02M3/33515 , H02M3/157 , H02M3/335 , H02M3/33507 , H02M3/33523
摘要： A power converter includes an input and an output. A regulation circuit is coupled between the power converter input and the power converter output. The regulation circuit is coupled to receive a feedback signal representative of the power converter output. The feedback signal has a first feedback state that represents a level at the power converter output that is above a threshold level and a second feedback state that represents a level at the power converter output that is below the threshold level. An oscillator is included in the regulation circuit that provides an oscillation signal that cycles between two states. The regulation circuit is coupled to be responsive to the oscillation signal and to a change between the first and second feedback states to enable or disable a flow of energy from the power converter input to the power converter output.
摘要翻译：功率转换器包括输入和输出。功率转换器输入和功率转换器输出之间耦合调节电路。该调节电路被耦合以接收表示功率转换器输出的反馈信号。反馈信号具有第一反馈状态，其表示功率转换器输出处于阈值电平以上的电平，第二反馈状态表示功率转换器输出处于低于阈值电平的电平。调节电路中包含振荡器，该振荡器提供在两种状态之间循环的振荡信号。该调节电路被耦合以响应于振荡信号和第一和第二反馈状态之间的变化，以使得能够从功率转换器输入到功率转换器输出的能量流动。

47. 发明授权

US08279643B2 Method and apparatus to select a parameter/mode based on a measurement during an initialization period 失效
标题翻译：在初始化期间基于测量选择参数/模式的方法和装置
公开(公告)号：US08279643B2
公开(公告)日：2012-10-02
申请号：US13343579
申请日：2012-01-04
申请人： Alex B. Djenguerian , Robert J. Mayell , Kent Wong
发明人： Alex B. Djenguerian , Robert J. Mayell , Kent Wong
IPC分类号： H02M1/00 , G05F1/00
CPC分类号： H02M3/33515 , H02M3/33523
摘要： An integrated circuit includes a threshold detection circuit that is coupled to measure a signal from a first resistive external circuit coupled between a fourth external terminal of the integrated circuit and a first external terminal of the integrated circuit during a duration of an initialization period after the fourth external terminal has been charged to a supply threshold value. A regulator circuit is coupled to charge the fourth external terminal to the supply threshold value during the initialization period of the integrated circuit. A selection circuit is coupled to the threshold detection circuit to select a parameter/mode of the integrated circuit in response to the signal measured from the first resistive external circuit during the duration of the initialization period after the fourth external terminal has been charged to the supply threshold value.
摘要翻译：一种集成电路包括阈值检测电路，该阈值检测电路被耦合以测量来自集成电路的第四外部端子和集成电路的第一外部端子之间的第一电阻外部电路的信号，在第四个外部端子已经被充电到电源阈值。耦合到稳压器电路，以在集成电路的初始化期间对第四外部端子充电至电源阈值。选择电路耦合到阈值检测电路，以在第四外部端子已经被充电到电源之后的初始化时段期间响应于从第一电阻外部电路测量的信号来选择集成电路的参数/模式阈值。

48. 发明申请

US20120081930A1 METHOD AND APPARATUS TO LIMIT MAXIMUM SWITCH CURRENT IN A SWITCHING POWER SUPPLY 失效
标题翻译：限制开关电源中最大开关电流的方法和装置
公开(公告)号：US20120081930A1
公开(公告)日：2012-04-05
申请号：US13315131
申请日：2011-12-08
申请人： Alex B. Djenguerian , Andrew J. Morrish
发明人： Alex B. Djenguerian , Andrew J. Morrish
IPC分类号： H02M3/335
CPC分类号： H02M1/32 , H02M3/33507 , H02M2001/0009 , H02M2001/0038
摘要： An integrated circuit for use in a power supply includes a drive signal generator, a short on time detector, and an oscillator. The drive signal generator generates a drive signal in response to a clock signal. The short on time detector provides an output indicating that consecutive on times of the drive signal are short on times. An on time of the drive signal is a short on time if a switch current of the switch exceeds a current limit after a leading edge blanking period and if the on time of the switch is less than or equal to a sum of the leading edge blanking period and a current limit delay time period. The oscillator generates the clock signal and changes a frequency of the clock signal from a first frequency to a lower second frequency in response to the output of the short on time detector.
摘要翻译：用于电源的集成电路包括驱动信号发生器，短时间检测器和振荡器。驱动信号发生器响应于时钟信号产生驱动信号。短时间检测器提供一个输出，指示驱动信号的连续接通时间短。如果在前沿消隐周期之后开关的开关电流超过电流限制，并且如果开关的接通时间小于或等于前沿消隐的总和，则驱动信号的导通时间是短暂的周期和当前限制延迟时间段。振荡器响应于短时间检测器的输出而产生时钟信号并将时钟信号的频率从第一频率改变到较低的第二频率。

49. 发明申请

US20120051098A1 METHOD AND APPARATUS FOR POWER CONVERTER FAULT CONDITION DETECTION 失效
标题翻译：用于电力转换器故障状态检测的方法和装置
公开(公告)号：US20120051098A1
公开(公告)日：2012-03-01
申请号：US13289932
申请日：2011-11-04
申请人： Alex B. Djenguerian , Erdem Bircan
发明人： Alex B. Djenguerian , Erdem Bircan
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M1/32
摘要： An example controller includes a feedback circuit coupled to provide feedback information representative of an output of the power converter during at least a portion of an OFF time of a power switch. A sense input receives a sense signal that is representative of a reflected voltage representative of an input voltage of the power converter during at least a portion of an ON time of the power switch. A fault detector is to be coupled to detect a fault condition in response to the reflected voltage being below a fault threshold for a fault period of time. A control is coupled to the fault detector and the feedback circuit to control switching of the power switch to regulate the output of the power converter in response to the feedback information and inhibit the switching of the power switch in response to the fault detector detecting the fault condition.
摘要翻译：示例性控制器包括反馈电路，其被耦合以在功率开关的OFF时间的至少一部分期间提供表示功率转换器的输出的反馈信息。感测输入在电源开关的接通时间的至少一部分期间接收表示代表功率转换器的输入电压的反射电压的感测信号。要故障检测器被耦合以响应于在故障时间段内的反射电压低于故障阈值来检测故障状况。控制器耦合到故障检测器和反馈电路，以响应于反馈信息来控制功率开关的切换以调节功率转换器的输出，并且响应于故障检测器检测到故障而禁止电源开关的切换条件。

50. 发明申请

US20110267843A1 METHOD AND APPARATUS TO LIMIT OUTPUT POWER IN A SWITCHING POWER SUPPLY 失效
标题翻译：限制开关电源输出功率的方法和装置
公开(公告)号：US20110267843A1
公开(公告)日：2011-11-03
申请号：US13180227
申请日：2011-07-11
申请人： Alex B. Djenguerian , Stefan Bäurle , Kent Wong
发明人： Alex B. Djenguerian , Stefan Bäurle , Kent Wong
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/32
摘要： An example integrated circuit controller for a power supply includes a modulator, a drive signal generator, a comparator, and a variable current limit generator. The modulator generates an enable signal having logic states responsive to a feedback signal. The drive signal generator either enables or skips enabling a switch of the power supply during a switching period in response to the logic state of the enable signal. The comparator asserts an over current signal to disable the switch if current flowing through the switch exceeds a variable current limit. The variable current limit generator sets the variable current limit to a first current limit in response to one logic state of the enable signal during a switching period and sets the variable current limit to a second current limit if the enable signal transitions logic states and the over current signal is asserted during the switching period.
摘要翻译：用于电源的示例集成电路控制器包括调制器，驱动信号发生器，比较器和可变电流限制发生器。调制器产生具有响应于反馈信号的逻辑状态的使能信号。驱动信号发生器响应于使能信号的逻辑状态，在切换周期期间启用或跳过使能电源的开关。如果流过开关的电流超过可变电流限制，比较器将断开过电流信号以禁用开关。可变电流限制发生器在开关周期期间响应于使能信号的一个逻辑状态将可变电流限制设置为第一电流限制，并且如果使能信号转换逻辑状态并将过流限制设置为第二电流限制，则将可变电流限制设置为第二电流限制电流信号在开关周期内被断言。

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