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1. 发明授权

US09941848B1 Transconductance with capacitances feedback compensation amplifier 有权
公开(公告)号：US09941848B1
公开(公告)日：2018-04-10
申请号：US14520060
申请日：2014-10-21
申请人： Cirrus Logic, Inc.
发明人： Ramin Zanbaghi , Aaron Brennan , Johann Gaboriau , Prashanth Drakshapalli , Vamsikrishna Parupalli
IPC分类号： H03F1/34 , H03F3/187 , H03F1/02
CPC分类号： H03F3/187 , H03F1/02 , H03F1/14 , H03F2200/03 , H03F2200/135 , H03F2200/408 , H03F2200/54
摘要： In accordance with embodiments of the present disclosure, a transconductance with capacitances feedback compensation amplifier may include a capacitor in parallel with an inner feedback loop of the amplifier for providing cascade compensation to the amplifier.

2. 发明申请

US20140252975A1 Reduction of Supply Current Variations Using Compensation Current Control 有权
标题翻译：使用补偿电流控制减少电源电流变化
公开(公告)号：US20140252975A1
公开(公告)日：2014-09-11
申请号：US14203755
申请日：2014-03-11
申请人： Cirrus Logic, Inc.
发明人： Prashanth Drakshapalli , Rahul Singh , Siddharth Maru , John L. Melanson
IPC分类号： H02M3/335 , H05B33/08
CPC分类号： H02M3/33507 , H05B33/0815 , Y02B20/347
摘要： A power distribution system and method includes a controller that is configured to control a switching power converter. In at least one embodiment, the controller includes a compensation current control circuit to control a compensation current that reduces and, in at least one embodiment, approximately eliminates variations in current drawn by the controller during a particular operational time period. In at least one embodiment, the power distribution system is a lamp that includes the controller, a switching power converter, and one or more light sources, such as light emitting diodes.
摘要翻译：配电系统和方法包括配置成控制开关功率转换器的控制器。在至少一个实施例中，控制器包括补偿电流控制电路，用于控制减小的补偿电流，并且在至少一个实施例中，大致消除了在特定操作时间段期间控制器所绘制的电流的变化。在至少一个实施例中，配电系统是包括控制器，开关功率转换器和一个或多个光源（诸如发光二极管）的灯。

3. 发明申请

US20130155728A1 Isolation of Secondary Transformer Winding Current During Auxiliary Power Supply Generation 有权
标题翻译：辅助电源发电期间二次变压器绕组电流的隔离
公开(公告)号：US20130155728A1
公开(公告)日：2013-06-20
申请号：US13715451
申请日：2012-12-14
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Prashanth Drakshapalli , Siddharth Maru
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/4258 , H02M1/44 , H02M3/33523 , H02M3/33561 , H02M3/33576 , H02M5/2576 , H02M7/217 , H02M2001/0006 , H02M2001/0048 , H05B33/0815 , H05B33/0845 , H05B37/02 , Y02B20/346 , Y02B20/347 , Y02B70/126 , Y02B70/1491
摘要： An electronic system and method include a controller to actively control power transfer from a primary winding of a switching power converter to an auxiliary-winding of an auxiliary power supply. The switching power converter is controlled and configured such that during transfer of power to the auxiliary-winding, the switching power converter does not transfer charge to one or more secondary-windings of the switching power converter. Thus, the switching power converter isolates one or more secondary transformer winding currents from an auxiliary-winding current. By isolating the charge delivered to the one or more secondary-windings from charge delivered to the auxiliary-winding, the controller can accurately determine an amount of charge delivered to the secondary-windings and, thus, to a load.
摘要翻译：电子系统和方法包括控制器，用于主动地控制从开关功率转换器的初级绕组到辅助电源的辅助绕组的功率传递。开关电源转换器被控制和配置为使得在向辅助绕组传递电力时，开关功率转换器不将电荷传送到开关功率转换器的一个或多个次级绕组。因此，开关功率转换器将一个或多个次级变压器绕组电流与辅助绕组电流隔离。通过将输送到一个或多个次级绕组的电荷从传送到辅助绕组的电荷隔离，控制器可以精确地确定输送到次级绕组的电荷量，从而准确地确定负载。

4. 发明申请

US20150171889A1 LOW POWER ANALOG-TO-DIGITAL CONVERTER FOR SENSING GEOPHONE SIGNALS 有权
标题翻译：用于感应地球信号的低功率模拟数字转换器
公开(公告)号：US20150171889A1
公开(公告)日：2015-06-18
申请号：US14636417
申请日：2015-03-03
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Rahul Singh , Prashanth Drakshapalli , Dale Brummel , Stephen T. Hodapp
IPC分类号： H03M3/00 , G01V1/18
CPC分类号： G01V1/181 , H03M3/424 , H03M3/45 , H03M3/454
摘要： A low power analog-to-digital converter configured to sense sensor signals may include a loop filter and a feedback digital-to-analog converter. The loop filter may have a loop filter input configured to receive an input current signal from a sensor and generate an output signal responsive to the input current signal. The feedback digital-to-analog converter may have a feedback output configured to generate a current-mode or charge-mode feedback output signal responsive to the output signal, the feedback output coupled to the loop filter input in order to combine the input current signal and the feedback output signal at the input.
摘要翻译：被配置为感测传感器信号的低功率模数转换器可以包括环路滤波器和反馈数模转换器。环路滤波器可以具有环路滤波器输入，其被配置为从传感器接收输入电流信号，并响应于输入电流信号产生输出信号。反馈数模转换器可以具有被配置为响应于输出信号产生电流模式或电荷模式反馈输出信号的反馈输出，反馈输出耦合到环路滤波器输入，以便组合输入电流信号和输入端的反馈输出信号。

5. 发明申请

US20140265916A1 Controlled Electronic System Power Dissipation via an Auxiliary-Power Dissipation Circuit 审中-公开
标题翻译：受控电子系统通过辅助耗散电路进行功耗
公开(公告)号：US20140265916A1
公开(公告)日：2014-09-18
申请号：US14212376
申请日：2014-03-14
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Prashanth Drakshapalli , Siddharth Maru , Rahul Singh
IPC分类号： H05B33/08
CPC分类号： H05B33/0809 , H05B33/0815 , H05B33/0848 , Y02B20/346 , Y02B20/383
摘要： An electronic system and method include a controller to actively control transfer of excess energy to an auxiliary-winding of an auxiliary power dissipation circuit. The excess energy is a transfer of energy from a primary winding of a switching power converter to the auxiliary-winding of the auxiliary power dissipation circuit. In at least one embodiment, the electronic system is a lighting system that includes a triac-based dimmer. The excess energy is energy drawn through the primary-side winding of the switching power converter to provide operational compatibility between a dimmer through which a power supply provides energy to the switching power converter and a load to which the switching power converter provides energy.
摘要翻译：电子系统和方法包括控制器，用于主动地控制向辅助功率耗散电路的辅助绕组传递过剩能量。过量的能量是能量从开关功率转换器的初级绕组传递到辅助功率耗散电路的辅助绕组。在至少一个实施例中，电子系统是包括基于三端双向可控硅的调光器的照明系统。过量的能量是通过开关功率转换器的初级侧绕组抽取的能量，以提供调光器之间的操作兼容性，通过该调光器，电源向开关功率转换器提供能量和开关功率转换器提供能量的负载。

6. 发明授权

US09609701B2 Switch-mode drive sensing of reverse recovery in bipolar junction transistor (BJT)-based power converters 有权
公开(公告)号：US09609701B2
公开(公告)日：2017-03-28
申请号：US14634716
申请日：2015-02-27
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Ramin Zanbaghi , Thirumalai Rengachari , Prashanth Drakshapalli , Rahul Singh , Arnab Kumar Dutta
IPC分类号： H05B37/02 , H05B33/08 , H02M3/335
CPC分类号： H05B33/0815 , H02M3/335 , H05B33/0845 , H05B33/0887 , H05B37/02
摘要： A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as a converter in LED-based light bulbs. The power stage may be operated by a controller to maintain a desired current output to the LED load. The controller may operate the power stage by monitoring a start and end of a reverse recovery time of the BJT. Information regarding the start and end of the reverse recovery time may be used in the control of the power stage to improve efficiency of the power stage.

7. 发明授权

US09335429B2 Low power analog-to-digital converter for sensing geophone signals 有权
标题翻译：用于感应地震检波器信号的低功耗模数转换器
公开(公告)号：US09335429B2
公开(公告)日：2016-05-10
申请号：US14636417
申请日：2015-03-03
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , Rahul Singh , Prashanth Drakshapalli , Dale Brummel , Stephen T. Hodapp
IPC分类号： H03M3/00 , G01V1/18
CPC分类号： G01V1/181 , H03M3/424 , H03M3/45 , H03M3/454
摘要： A low power analog-to-digital converter configured to sense sensor signals may include a loop filter and a feedback digital-to-analog converter. The loop filter may have a loop filter input configured to receive an input current signal from a sensor and generate an output signal responsive to the input current signal. The feedback digital-to-analog converter may have a feedback output configured to generate a current-mode or charge-mode feedback output signal responsive to the output signal, the feedback output coupled to the loop filter input in order to combine the input current signal and the feedback output signal at the input.
摘要翻译：被配置为感测传感器信号的低功率模数转换器可以包括环路滤波器和反馈数模转换器。环路滤波器可以具有环路滤波器输入，其被配置为从传感器接收输入电流信号，并响应于输入电流信号产生输出信号。反馈数模转换器可以具有被配置为响应于输出信号产生电流模式或电荷模式反馈输出信号的反馈输出，反馈输出耦合到环路滤波器输入，以便组合输入电流信号和输入端的反馈输出信号。

8. 发明授权

US09263964B1 Systems and methods for low-power lamp compatibility with an electronic transformer 有权
标题翻译：与电子变压器低功率灯兼容的系统和方法
公开(公告)号：US09263964B1
公开(公告)日：2016-02-16
申请号：US13972102
申请日：2013-08-21
申请人： Cirrus Logic, Inc.
发明人： Michael A. Kost , Wesley L. Mokry , Prashanth Drakshapalli , Stephen T. Hodapp , Firas Azrai
IPC分类号： H05B37/00 , H02M7/06 , H05B33/08
CPC分类号： H02M7/06 , H02M1/36 , H02M2001/0006 , H05B33/0809 , H05B33/0815
摘要： In accordance with systems and methods of the present disclosure, an apparatus for providing compatibility between a load having a reactive impedance and a secondary winding of an electronic transformer may include a power converter and a circuit. The power converter may be configured to transfer electrical energy from the secondary winding to the load. The circuit may be configured to charge an energy storage device coupled to the power converter following start-up of the electronic transformer in order to increase a voltage of the energy storage device to at least a voltage level sufficient for the electronic transformer to enter steady-state operation.
摘要翻译：根据本公开的系统和方法，用于提供具有无功阻抗的负载和电子变压器的次级绕组之间的兼容性的装置可以包括功率转换器和电路。功率转换器可以被配置为将电能从次级绕组传递到负载。电路可以被配置为对电子变压器起动之后耦合到功率转换器的能量存储装置进行充电，以便将能量存储装置的电压增加到至少足以使电子变压器进入稳定电压的电压，状态操作。

9. 发明授权

US09225252B2 Reduction of supply current variations using compensation current control 有权
标题翻译：使用补偿电流控制减少电源电流变化
公开(公告)号：US09225252B2
公开(公告)日：2015-12-29
申请号：US14203755
申请日：2014-03-11
申请人： Cirrus Logic, Inc.
发明人： Prashanth Drakshapalli , Rahul Singh , Siddharth Maru , John L. Melanson
IPC分类号： H05B37/02 , H02M3/335 , H05B33/08
CPC分类号： H02M3/33507 , H05B33/0815 , Y02B20/347
摘要： A power distribution system and method includes a controller that is configured to control a switching power converter. In at least one embodiment, the controller includes a compensation current control circuit to control a compensation current that reduces and, in at least one embodiment, approximately eliminates variations in current drawn by the controller during a particular operational time period. In at least one embodiment, the power distribution system is a lamp that includes the controller, a switching power converter, and one or more light sources, such as light emitting diodes.
摘要翻译：配电系统和方法包括配置成控制开关功率转换器的控制器。在至少一个实施例中，控制器包括补偿电流控制电路，用于控制减小的补偿电流，并且在至少一个实施例中，大致消除了在特定操作时间段期间控制器所绘制的电流的变化。在至少一个实施例中，配电系统是包括控制器，开关功率转换器和一个或多个光源（诸如发光二极管）的灯。

10. 发明申请

US20140028095A1 ACCELERATION OF OUTPUT ENERGY PROVISION FOR A LOAD DURING START-UP OF A SWITCHING POWER CONVERTER 有权
标题翻译：开关电源转换器启动期间负载的输出能量提供的加速
公开(公告)号：US20140028095A1
公开(公告)日：2014-01-30
申请号：US13829231
申请日：2013-03-14
申请人： CIRRUS LOGIC, INC.
发明人： Siddharth Maru , Zhaohui He , Mohit Sood , Prashanth Drakshapalli , Rahul Singh
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M3/335 , H03K17/145 , H05B33/0815 , H05B33/0848 , H05B33/0884 , Y02B20/341 , Y10T307/406 , Y10T307/832
摘要： An electronic system and method include a controller to operate in a start-up mode to accelerate driving a load to an operating voltage and then operates in a post-start-up mode. A start-up condition occurs when the controller detects that a load voltage is below a predetermined voltage threshold level. The predetermined voltage threshold level is set so that the controller will boost the voltage to an operating value of a load voltage at a faster rate than during normal, steady-state operation. The controller causes a switching power converter to provide charge to the load at a rate in accordance with a start-up mode until reaching an energy-indicating threshold. When the energy-indicating threshold has been reached, the controller causes the switching power converter to (i) decrease the amount of charge provided to the load relative to the charge provided during the start-up mode and (ii) operate in a distinct post-start-up-mode.
摘要翻译：电子系统和方法包括控制器，其以启动模式操作以加速将负载驱动到工作电压，然后在启动后模式下操作。当控制器检测到负载电压低于预定电压阈值电平时，发生启动条件。设定预定的电压阈值电平，使得控制器将以比在正常的稳态操作期间更快的速率将电压升高到负载电压的操作值。控制器使得开关功率转换器以按照启动模式的速率向负载提供电荷，直到达到能量指示阈值。当达到能量指示阈值时，控制器使开关功率转换器（i）减少提供给负载的相对于启动模式期间提供的电荷的电荷量，以及（ii）在不同的位置操作 - 启动模式。

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