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11. 发明申请

US20060176716A1 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：US20060176716A1
公开(公告)日：2006-08-10
申请号：US11397524
申请日：2006-04-03
申请人： Balu Balakrishnan , Alex Djenguerian , Kent Wong , David Michael Matthews
发明人： Balu Balakrishnan , Alex Djenguerian , Kent Wong , David Michael Matthews
IPC分类号： H02M3/335
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. An example circuit includes a switch including first, second and third terminals. The first terminal is coupled or decoupled to the second terminal in response to a control signal received at the third terminal. Voltage sense circuitry is included and is coupled to sense a voltage drop across the switch. The voltage drop is representative of a current in the switch during an on time of the switch. The voltage sense circuitry has a variable current limit threshold that increases between a first level and a second level during the on time of the switch. The control signal is responsive to the variable current limit threshold to regulate a power supply with 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.
摘要翻译：一种电源，包括一个调节电路，该电路用线路电压保持大致恒定的负载电流。示例电路包括包括第一，第二和第三端子的开关。响应于在第三终端处接收到的控制信号，第一终端被耦合或去耦到第二终端。包括电压检测电路，并耦合以感测开关两端的电压降。电压降在开关导通时代表开关中的电流。电压检测电路具有可变电流限制阈值，其在开关导通时间在第一电平和第二电平之间增加。控制信号响应于可变电流限制阈值，以具有输出特性的输出特性来调节电源，输出特性具有低于输出电流阈值的近似恒定的输出电压和低于输出电压阈值的近似恒定的输出电流。

12. 发明申请

US20050168202A1 Method and apparatus for reducing audio noise in a switching regulator 有权
标题翻译：用于减少开关调节器中的音频噪声的方法和装置
公开(公告)号：US20050168202A1
公开(公告)日：2005-08-04
申请号：US11100065
申请日：2005-04-05
申请人： Balu Balakrishnan , Alex Djenguerian , Kent Wong
发明人： Balu Balakrishnan , Alex Djenguerian , Kent Wong
IPC分类号： H02M3/28 , H02M3/335
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.
摘要翻译：利用开/关控制的开关调节器，通过调节开关调节器的电流限制来减轻轻负载时的音频噪声。在一个实施例中，开关调节器包括状态机，其基于来自驱动信号的先前N个周期的电源的输出的反馈信号值的模式来调整开关调节器的电流限制。状态机在轻负载下调节电流限制，使得不跳过周期以将开关调节器的工作频率降低到音频频率范围，直到通过变压器的磁通密度足够低以减少音频噪声的产生。

13. 发明申请

US20070285068A1 Method and apparatus for reducing audio noise in a switching regulator 有权
公开(公告)号：US20070285068A1
公开(公告)日：2007-12-13
申请号：US11729262
申请日：2007-03-27
申请人： Balu Balakrishnan , Alex Djenguerian , Kent Wong
发明人： Balu Balakrishnan , Alex Djenguerian , Kent Wong
IPC分类号： G05F1/573
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.

14. 发明申请

US20050146900A1 Method and apparatus for trimming current limit and frequency to maintain a constant maximum power 失效
标题翻译：用于调整电流限制和频率以保持恒定最大功率的方法和装置
公开(公告)号：US20050146900A1
公开(公告)日：2005-07-07
申请号：US11071380
申请日：2005-03-02
申请人： Balu Balakrishnan , Alex Djenguerian , David Matthews
发明人： Balu Balakrishnan , Alex Djenguerian , David Matthews
IPC分类号： H02M3/28 , H02M1/00 , H02M1/32 , H02M3/155 , H02M3/156 , H02M3/335 , H02M3/00
CPC分类号： H02M1/32 , G05F3/262 , H02M3/156 , H02M3/33507 , H02M7/003 , H02M2001/0093 , H03K17/0822
摘要： Methods and apparatuses to trim current limit (Ip) and frequency (f) to maintain a constant maximum power. In one aspect of the invention, a power supply regulator having a peak current limit detection threshold and an operating frequency is disclosed. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the Ipm·fn product substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1. In another aspect of the invention, the power supply regulator has a control circuit having a control threshold current. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the product of Ipm·fn divided by the control threshold current substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1.
摘要翻译：限制电流极限（I SUB）和频率（f）的方法和装置以维持恒定的最大功率。在本发明的一个方面，公开了具有峰值电流限制检测阈值和工作频率的电源调节器。峰值电流限制阈值或工作频率被特别地调整，以保持从一个电源控制器基本上恒定的电压I n 到另一个，其中m基本上等于2，并且n基本上等于1.在本发明的另一方面，电源调节器具有具有控制阈值电流的控制电路。对峰值电流限制阈值或工作频率进行特殊调整，以保持I / O的乘积除以控制阈值电流从一个电源控制器基本上恒定到另一个，其中m基本上等于2，并且n基本上等于1。

15. 发明申请

US20060273773A1 Method and apparatus for trimming current limit and frequency to maintain a constant maximum power 失效
标题翻译：用于调整电流限制和频率以保持恒定最大功率的方法和装置
公开(公告)号：US20060273773A1
公开(公告)日：2006-12-07
申请号：US11503448
申请日：2006-08-11
申请人： Balu Balakrishnan , Alex Djenguerian , David Matthews
发明人： Balu Balakrishnan , Alex Djenguerian , David Matthews
IPC分类号： G05F1/00
CPC分类号： H02M1/32 , G05F3/262 , H02M3/156 , H02M3/33507 , H02M7/003 , H02M2001/0093 , H03K17/0822
摘要： A method which regulates a power supply is disclosed. In one aspect of the invention, the method includes sensing an excess control current through a control terminal with a control current sensor circuit. A transistor is switched with a control circuit in response to the control current sensor circuit and an oscillator that is coupled to a trim circuit, which is trimmed during manufacture of a circuit, to regulate the output of a power supply. A current through the transistor is limited with a current limit circuit that is coupled to the trim circuit, which is trimmed during manufacture of the circuit. A maximum deliverable power value of the power supply is determined by said trimming of the trim circuit during manufacture of the circuit.
摘要翻译：公开了一种调节电源的方法。在本发明的一个方面，该方法包括通过控制电流传感器电路感测通过控制端的过量的控制电流。响应于控制电流传感器电路和耦合到在电路制造期间被修整的微调电路的振荡器来调节晶体管的输出，控制电路被控制电路切换。通过晶体管的电流受限于电流限制电路，该限流电路耦合到在电路制造期间被修整的微调电路。电源的最大输出功率值由电路制造期间的微调电路的修整决定。

16. 发明申请

US20060022659A1 Method and apparatus for trimming current limit and frequency to maintain a constant maximum power 有权
标题翻译：用于调整电流限制和频率以保持恒定最大功率的方法和装置
公开(公告)号：US20060022659A1
公开(公告)日：2006-02-02
申请号：US11237254
申请日：2005-09-28
申请人： Balu Balakrishnan , Alex Djenguerian , David Matthews
发明人： Balu Balakrishnan , Alex Djenguerian , David Matthews
IPC分类号： G05F1/40
CPC分类号： H02M1/32 , G05F3/262 , H02M3/156 , H02M3/33507 , H02M7/003 , H02M2001/0093 , H03K17/0822
摘要： Methods and apparatuses to trim current limit (Ip) and frequency (f) to maintain a constant maximum power. In one aspect of the invention, a power supply regulator having a peak current limit detection threshold and an operating frequency is disclosed. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the Ipm·fn product substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1. In another aspect of the invention, the power supply regulator has a control circuit having a control threshold current. The peak current limit threshold or the operating frequency are adjusted specifically to maintain the product of Ipm·fn divided by the control threshold current substantially constant from one power supply controller to another where m is substantially equal to 2 and n is substantially equal to 1.
摘要翻译：限制电流极限（I SUB）和频率（f）的方法和装置以维持恒定的最大功率。在本发明的一个方面，公开了具有峰值电流限制检测阈值和工作频率的电源调节器。峰值电流限制阈值或工作频率被特别地调整，以保持从一个电源控制器基本上恒定的电压I n 到另一个，其中m基本上等于2，并且n基本上等于1.在本发明的另一方面，电源调节器具有具有控制阈值电流的控制电路。对峰值电流限制阈值或工作频率进行特殊调整，以保持I / O的乘积除以控制阈值电流从一个电源控制器基本上恒定到另一个，其中m基本上等于2，并且n基本上等于1。

17. 发明申请

US20100254166A1 METHOD AND APPARATUS FOR ON/OFF CONTROL OF A POWER CONVERTER 失效
标题翻译：电源转换器开/关控制的方法和装置
公开(公告)号：US20100254166A1
公开(公告)日：2010-10-07
申请号：US12816982
申请日：2010-06-16
申请人： Alex B. Djenguerian , Balu Balakrishnan , Erdem Bircan , David Michael Hugh Matthews
发明人： Alex B. Djenguerian , Balu Balakrishnan , Erdem Bircan , David Michael Hugh Matthews
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M3/157
摘要： A power converter control method and apparatus is disclosed. An example power converter controller according to aspects of the present invention includes a feedback sampling circuit coupled to receive a feedback signal representative of an output of a power converter to generate feedback signal samples during enabled switching cycles. The power converter controller also includes a switch conduction control circuit coupled to the feedback sampling circuit. The switch conduction control circuit includes switch conduction enable circuitry coupled to enable or disable the conduction of a power switch during a switching cycle in response to the feedback signal samples. The switch conduction control circuit also includes switch conduction scheduling circuitry coupled to determine a varying number of future enabled and disabled switching cycles in response to the feedback signal samples from a present switching cycle and one or more past switching cycles.
摘要翻译：公开了一种功率转换器控制方法和装置。根据本发明的方面的示例性功率转换器控制器包括反馈采样电路，其被耦合以接收表示功率转换器的输出的反馈信号，以在启用的开关周期期间产生反馈信号采样。电力转换器控制器还包括耦合到反馈采样电路的开关导通控制电路。开关导通控制电路包括开关导通使能电路，其耦合以响应于反馈信号采样而在开关周期期间启用或禁用功率开关的导通。开关导通控制电路还包括耦合以响应于来自当前开关周期和一个或多个过去开关周期的反馈信号样本确定未来启用和禁用的开关周期的变化数量的开关导通调度电路。

18. 发明申请

US20090251121A1 METHOD AND APPARATUS PROVIDING FINAL TEST AND TRIMMING FOR A POWER SUPPLY CONTROLLER 有权
标题翻译：为电源控制器提供最终测试和调试的方法和设备
公开(公告)号：US20090251121A1
公开(公告)日：2009-10-08
申请号：US12484982
申请日：2009-06-15
申请人： Balu Balakrishnan , Alex B. Djenguerian , Erdem Bircan
发明人： Balu Balakrishnan , Alex B. Djenguerian , Erdem Bircan
IPC分类号： G05F3/02
CPC分类号： G11C29/021 , G06F1/26 , G11C29/02 , H02M1/32 , H02M1/36 , H02M3/00 , H02M3/157
摘要： A power supply controller having final test and trim circuitry. In one embodiment, a power supply controller for switched mode power supply includes a selector circuit, a trim circuit, a shutdown circuit and a disable circuit. The trim circuit includes a programmable circuit connection that can be selected by the selector circuit by toggling a voltage on an external terminal such as for example a power supply terminal, a control terminal or a function terminal of the power supply controller. The programmable circuit connection in the trim circuit can be programmed by applying a programming voltage to the external terminal. The shutdown circuit shuts down the power supply controller if the temperature rises above an over temperature threshold voltage. The shutdown circuit includes adjustment circuitry that can be used to test the shutdown circuit. The adjustment circuitry can adjust and reduce the over temperature threshold of the power supply controller. Thus, the power supply controller can be tested without having to actually heat the part. The disable circuit includes a programmable circuit connection, which when programmed prevents further trimming of power supply controller and prevents adjustment of the shutdown circuit over temperature threshold.
摘要翻译：具有最终测试和调整电路的电源控制器。在一个实施例中，用于开关模式电源的电源控制器包括选择器电路，微调电路，关断电路和禁用电路。微调电路包括可由选择器电路通过切换外部端子（例如电源端子，控制端子或电源控制器的功能端子）的电压来选择的可编程电路连接。可以通过向外部端子施加编程电压来对编程电路中的可编程电路连接进行编程。如果温度超过过温阈值电压，关闭电路会关闭电源控制器。关断电路包括可用于测试关断电路的调节电路。调节电路可以调节和降低电源控制器的过温阈值。因此，可以对电源控制器进行测试，而无需实际加热部件。禁用电路包括可编程电路连接，其在编程时防止进一步修整电源控制器并防止关断电路在温度阈值以上的调整。

19. 发明申请

US20120002448A1 METHOD AND APPARATUS FOR ON/OFF CONTROL OF A POWER CONVERTER 失效
标题翻译：电源转换器开/关控制的方法和装置
公开(公告)号：US20120002448A1
公开(公告)日：2012-01-05
申请号：US13234058
申请日：2011-09-15
申请人： Alex B. Djenguerian , Balu Balakrishnan , Erdem Bircan , David Michael Hugh Matthews
发明人： Alex B. Djenguerian , Balu Balakrishnan , Erdem Bircan , David Michael Hugh Matthews
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M3/157
摘要： A power converter is disclosed. An example power converter includes an energy transfer element coupled between a power converter input and a power converter output. A power switch is coupled to the energy transfer element and the power converter input. A feedback sampling circuit is coupled to receive a feedback signal representative of the power converter output to generate feedback signal samples during switching cycles. A switch conduction scheduling circuit is coupled to determine enabling and disabling of the power switch in future switching cycles in response to the feedback signal samples from a present switching cycle and one or more past switching cycles. A switch conduction control circuit is coupled to enable or disable conduction of the power switch during a switching cycle to control an amount of energy transferred from the power converter input to the power converter output.
摘要翻译：公开了一种功率转换器。示例性功率转换器包括耦合在功率转换器输入和功率转换器输出之间的能量传递元件。功率开关耦合到能量传递元件和功率转换器输入。耦合反馈采样电路以接收表示功率转换器输出的反馈信号，以在开关周期期间产生反馈信号采样。耦合开关导通调度电路以响应于来自当前开关周期和一个或多个过去开关周期的反馈信号样本，在将来的开关周期中确定功率开关的使能和禁止。开关导通控制电路被耦合以在开关周期期间启用或禁用电力开关的导通，以控制从功率转换器输入传递到功率转换器输出的能量的量。

20. 发明授权

US07881032B2 Method and apparatus providing final test and trimming for a power supply controller 有权
公开(公告)号：US07881032B2
公开(公告)日：2011-02-01
申请号：US12484982
申请日：2009-06-15
申请人： Balu Balakrishnan , Alex B. Djenguerian , Erdem Bircan
发明人： Balu Balakrishnan , Alex B. Djenguerian , Erdem Bircan
IPC分类号： H01H37/76 , H03K19/73
CPC分类号： G11C29/021 , G06F1/26 , G11C29/02 , H02M1/32 , H02M1/36 , H02M3/00 , H02M3/157
摘要： A power supply controller having final test and trim circuitry. In one embodiment, a power supply controller for switched mode power supply includes a selector circuit, a trim circuit, a shutdown circuit and a disable circuit. The trim circuit includes a programmable circuit connection that can be selected by the selector circuit by toggling a voltage on an external terminal such as for example a power supply terminal, a control terminal or a function terminal of the power supply controller. The programmable circuit connection in the trim circuit can be programmed by applying a programming voltage to the external terminal. The shutdown circuit shuts down the power supply controller if the temperature rises above an over temperature threshold voltage. The shutdown circuit includes adjustment circuitry that can be used to test the shutdown circuit. The adjustment circuitry can adjust and reduce the over temperature threshold of the power supply controller. Thus, the power supply controller can be tested without having to actually heat the part. The disable circuit includes a programmable circuit connection, which when programmed prevents further trimming of power supply controller and prevents adjustment of the shutdown circuit over temperature threshold.

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