专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明授权

US06833692B2 Method and apparatus for maintaining an approximate constant current output characteristic in a switched mode power supply 失效
标题翻译：用于在开关模式电源中维持近似恒定电流输出特性的方法和装置
公开(公告)号：US06833692B2
公开(公告)日：2004-12-21
申请号：US10346808
申请日：2003-01-16
申请人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews , Erdem Bircan
发明人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong , David Michael Hugh Matthews , Erdem Bircan
IPC分类号： G05F156
CPC分类号： H02M3/33507 , H02M3/156 , H02M2001/0006
摘要： A regulator circuit maintaining an approximate constant current output characteristic. In one aspect, a disclosed regulator controls a switch that has a current limit threshold. A supply terminal and feedback terminal of the regulator are connected together as a control terminal such that a shunt regulator current is the control terminal current in excess of the internal supply current consumed by the regulator. The current limit threshold of the switch is changed as a function of the shunt regulator current. In another aspect, a control input of the regulator circuit receives a current that is the sum of the internal supply current consumed by the regulator circuit and a feedback current. The feedback current is a fraction of the consumption current of the regulator circuit and the current limit threshold of the switch is changed as a function of the feedback current.
摘要翻译：一种保持近似恒流输出特性的稳压电路。在一个方面，所公开的调节器控制具有电流限制阈值的开关。调节器的电源端子和反馈端子作为控制端子连接在一起，使得并联调节器电流是超过调节器消耗的内部电源电流的控制端子电流。开关的电流限制阈值作为分流调节器电流的函数而改变。在另一方面，调节器电路的控制输入接收作为调节器电路消耗的内部电源电流与反馈电流之和的电流。反馈电流是调节器电路的消耗电流的一小部分，并且开关的电流限制阈值作为反馈电流的函数而改变。

82. 发明授权

US06781357B2 Method and apparatus for maintaining a constant load current with line voltage in a switch mode power supply 有权
公开(公告)号：US06781357B2
公开(公告)日：2004-08-24
申请号：US10253307
申请日：2002-09-23
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： G05F140
CPC分类号： H02M3/33523 , H02M3/33507 , H02M2001/0009 , H03K17/0822
摘要： A power supply including a regulation circuit that maintains an approximately constant load current with line voltage. In one embodiment, a regulation circuit includes a semiconductor switch and current sense circuitry to sense the current in the semiconductor switch. The current sense circuitry has a current limit threshold. The regulation circuit current limit threshold is varied from a first level to a second level during the time when the semiconductor switch is on. One embodiment of the regulation circuit is used in a power supply having an output characteristic having an approximately constant output voltage below an output current threshold and an approximately constant output current below an output voltage threshold.

83. 发明授权

US06667605B2 Method and apparatus for reducing audio noise in a switching regulator 失效
公开(公告)号：US06667605B2
公开(公告)日：2003-12-23
申请号：US10285266
申请日：2002-10-30
申请人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong
发明人： Balu Balakrishnan , Alex B. Djenguerian , Kent Wong
IPC分类号： G05F1571
CPC分类号： H02M3/33507 , H02M1/44 , H02M3/33515 , H02M2001/0025 , H02M2001/0032 , Y02B70/16
摘要： A switching regulator utilizing on/off control that reduces audio noise at light loads by adjusting the current limit of the switching regulator. In one embodiment, a switching regulator includes a state machine that adjusts the current limit of the switching regulator based on a pattern of feedback signal values from the output of the power supply for a preceding N cycles of the drive signal. The state machine adjusts the current limit lower at light loads such that cycles are not skipped to reduce the operating frequency of the switching regulator into the audio frequency range until the flux density through the transformer is sufficiently low to reduce the generation of audio noise.

84. 发明授权

US08587284B2 Method and apparatus to limit output power in a switching power supply 失效
标题翻译：限制开关电源中的输出功率的方法和装置
公开(公告)号：US08587284B2
公开(公告)日：2013-11-19
申请号：US13407261
申请日：2012-02-28
申请人： Alex B. Djenguerian , Stefan Bäurle , Kent Wong
发明人： Alex B. Djenguerian , Stefan Bäurle , Kent Wong
IPC分类号： G05F1/575 , H02H7/122
CPC分类号： H02M3/33507 , H02M1/32
摘要： A power supply includes an energy transfer element, a switch, and a controller. The controller 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 the switch current 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 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：电源包括能量传递元件，开关和控制器。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。如果开关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且过电流信号被断言，则将可变电流限制设置为第二电流限制在切换期间。

85. 发明申请

US20120320639A1 METHOD AND APPARATUS TO SELECT A PARAMETER/MODE BASED ON A MEASUREMENT DURING AN INITIALIZATION PERIOD 有权
标题翻译：在初始化期间根据测量选择参数/模式的方法和装置
公开(公告)号：US20120320639A1
公开(公告)日：2012-12-20
申请号：US13601615
申请日：2012-08-31
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： H02M3/335
CPC分类号： H02M3/33515 , H02M3/33523
摘要： A power supply includes an energy transfer element coupled between an input and an output. A switch is coupled to an input of the energy transfer element. A threshold detection circuit includes in an integrated circuit coupled to measure a signal from a resistive external circuit coupled between fourth and first external terminals of the integrated circuit during an initialization period after the fourth external terminal has been charged to a supply threshold value. A regulator circuit is coupled between second and fourth external terminals of the integrated circuit. The regulator circuit is coupled to charge the fourth external terminal to the supply threshold value during the initialization period. A selection circuit is coupled to the threshold detection circuit to select a parameter/mode of the integrated circuit in response to the measured signal.
摘要翻译：电源包括耦合在输入和输出之间的能量传递元件。开关耦合到能量传递元件的输入端。阈值检测电路包括集成电路，其被耦合以在第四外部端子已经被充电到电源阈值之后的初始化时段期间测量来自耦合在集成电路的第四和第一外部端子之间的电阻外部电路的信号。调节器电路耦合在集成电路的第二和第四外部端子之间。在初始化期间，调节器电路被耦合以将第四外部端子充电到电源阈值。选择电路耦合到阈值检测电路以响应于测量的信号选择集成电路的参数/模式。

86. 发明申请

US20120218788A1 METHOD AND APPARATUS FOR DIGITAL CONTROL OF A SWITCHING REGULATOR 有权
标题翻译：一种切换调节器的数字控制方法与装置
公开(公告)号：US20120218788A1
公开(公告)日：2012-08-30
申请号：US13466780
申请日：2012-05-08
申请人： Alex B. Djenguerian , Andrew J. Morrish , Arthur B. Odell , Kent Wong
发明人： Alex B. Djenguerian , Andrew J. Morrish , Arthur B. Odell , Kent Wong
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： In one aspect, a power supply includes an energy transfer element, a switch, a feedback circuit, a comparator, a state machine, and a control circuit. The feedback circuit generates a feedback signal representative of an output level of the power supply. The comparator provides a feedback state signal having a first feedback state that represents the output level of the power supply being above a threshold level and a second feedback state that represents the output level being below the threshold level. The state machine selectively modulates a first signal in response to the feedback state signal, where the first signal is the feedback signal or the threshold value signal. The control circuit is coupled to control switching of the switch to regulate the output level of the power supply in response to the feedback state signal.
摘要翻译：一方面，电源包括能量传递元件，开关，反馈电路，比较器，状态机和控制电路。反馈电路产生表示电源的输出电平的反馈信号。比较器提供具有表示电源的输出电平高于阈值电平的第一反馈状态和表示输出电平低于阈值电平的第二反馈状态的反馈状态信号。状态机响应于反馈状态信号选择性地调制第一信号，其中第一信号是反馈信号或阈值信号。控制电路被耦合以响应于反馈状态信号来控制开关的开关以调节电源的输出电平。

87. 发明申请

US20120099350A1 METHOD AND APPARATUS TO SELECT A PARAMETER/MODE BASED ON A MEASUREMENT DURING AN INITIALIZATION PERIOD 失效
标题翻译：在初始化期间根据测量选择参数/模式的方法和装置
公开(公告)号：US20120099350A1
公开(公告)日：2012-04-26
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
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。

88. 发明授权

US08116106B2 Method and apparatus to select a parameter/mode based on a measurement during an initialization period 有权
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：US08116106B2
公开(公告)日：2012-02-14
申请号：US12234474
申请日：2008-09-19
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： Techniques are disclosed to select functional parameters and/or operating modes of a circuit based on a measurement during an initialization period. In one aspect an integrated circuit includes a threshold detection circuit coupled to measure during an initialization period of the integrated circuit a signal from a first external circuit comprising one or more components coupled to a first external terminal 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 from the first external circuit during the initialization period of the integrated circuit. The first external terminal is further coupled to one or more additional external circuits, each of which comprising one or more components. The one or more additional external circuits are coupled to provide one or more signals at the first external terminal to be used by the integrated circuit during normal operation at times other than the initialization period to provide at least one additional function for the integrated circuit after the initialization period of the integrated circuit is complete.
摘要翻译：公开了基于在初始化期间的测量来选择电路的功能参数和/或操作模式的技术。在一个方面，集成电路包括阈值检测电路，其耦合以在集成电路的初始化时段期间测量来自第一外部电路的信号，该第一外部电路包括耦合到集成电路的第一外部端子的一个或多个组件。选择电路耦合到阈值检测电路，以在集成电路的初始化期间响应于来自第一外部电路的信号来选择集成电路的参数/模式。第一外部端子还耦合到一个或多个额外的外部电路，每个外部电路包括一个或多个组件。一个或多个附加外部电路被耦合以在第一外部端子处提供一个或多个信号，以在正常操作期间由集成电路在初始化周期之外的时间期间使用，以在集成电路之后提供至少一个附加功能集成电路的初始化周期完成。

89. 发明授权

US08013584B2 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：US08013584B2
公开(公告)日：2011-09-06
申请号：US12904015
申请日：2010-10-13
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 power supply regulator including a variable current limit threshold that increases during an on time of a switch. In one aspect, a power supply regulator includes a comparator coupled to receive a signal representative of a current through a switch during an on time of the switch. The comparator is further coupled to receive a variable current limit threshold that increases during the on time of the switch. The power supply regulator also includes a feedback circuit coupled to receive a feedback signal representative of an output of a power supply. A control circuit is also included and is coupled to the switch, to an output of the comparator, and to an output of the feedback circuit. The control circuit is coupled to control a switching of the switch in response the output of the comparator and the output of the feedback circuit to regulate the output of the power supply.
摘要翻译：一种电源调节器，其包括在开关导通时间期间增加的可变电流限制阈值。在一个方面，电源调节器包括比较器，其耦合以在开关的接通时间期间接收表示通过开关的电流的信号。比较器还被耦合以接收在开关导通时间期间增加的可变电流限制阈值。电源调节器还包括耦合以接收表示电源的输出的反馈信号的反馈电路。还包括控制电路，并且耦合到开关，比较器的输出端和反馈电路的输出端。控制电路被耦合以响应于比较器的输出和反馈电路的输出来控制开关的开关，以调节电源的输出。

90. 发明申请

US20110019441A1 METHOD AND APPARATUS FOR DIGITAL CONTROL OF A SWITCHING REGULATOR 有权
标题翻译：一种切换调节器的数字控制方法与装置
公开(公告)号：US20110019441A1
公开(公告)日：2011-01-27
申请号：US12899405
申请日：2010-10-06
申请人： Alex B. Djenguerian , Andrew J. Morrish , Arthur B. Odell , Kent Wong
发明人： Alex B. Djenguerian , Andrew J. Morrish , Arthur B. Odell , Kent Wong
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： In one aspect, a power supply regulator includes a feedback terminal, a node, a control circuit, a first current source, and a second current source. The node is coupled to the feedback terminal to provide a feedback state signal in response to a feedback current through the feedback terminal. The feedback state signal has feedback states that represent an output of the power supply. The control circuit is to be coupled to a power switch and to receive the feedback state signal to regulate the output of the power supply. The first current source is coupled to the node to provide a first current to the node. The second current source is coupled to the node to selectively remove a second current from the node to modulate the feedback current and to alter the feedback state of the feedback state signal.
摘要翻译：一方面，电源调节器包括反馈端子，节点，控制电路，第一电流源和第二电流源。该节点耦合到反馈端以响应于通过反馈端的反馈电流来提供反馈状态信号。反馈状态信号具有代表电源输出的反馈状态。控制电路将耦合到电源开关并接收反馈状态信号以调节电源的输出。第一电流源耦合到节点以向节点提供第一电流。第二电流源耦合到节点以选择性地从节点去除第二电流以调制反馈电流并改变反馈状态信号的反馈状态。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式