-
公开(公告)号：US20150364993A1
公开(公告)日：2015-12-17
申请号：US14303068
申请日：2014-06-12
Applicant: Cirrus Logic, Inc.
Inventor： Kan Wang , Michael A. Kost , Eric J. King , John L. Melanson , James P. McFarland
IPC: H02M3/156
CPC classification number: H02M3/156 , H05B33/0815 , Y02B20/346
Abstract: A low voltage lamp includes a boost converter stage and a load. The load may include low voltage light producing elements including low voltage light emitting diodes. The boost converter stage receives an electronic transformer output and includes an inductor coupled to a switch and a switch controller that receives one or more controller inputs. Inductor current may be returned to the transformer when the switch is closed and provided to a rectifier coupled to the load when the switch is open. Controller inputs may include a transformer input that receives the transformer output, a sense input indicating switch current, and a load input indicating load voltage. Controller logic may synchronize assertions of a control signal for the switch with edge transitions of the transformer output to maintain peak inductor current within a specified range and to selectively transfer stored energy in the inductor to the load or back to the transformer.
Abstract translation: 低压灯包括升压转换器级和负载。 负载可以包括低电压发光元件，包括低电压发光二极管。 升压转换器级接收电子变压器输出并且包括耦合到开关的电感器和接收一个或多个控制器输入的开关控制器。 当开关关闭时，电感电流可以返回到变压器，当开关打开时，电感电流提供给耦合到负载的整流器。 控制器输入可以包括接收变压器输出的变压器输入，指示开关电流的感测输入和指示负载电压的负载输入。 控制器逻辑可以使开关的控制信号的断言与变压器输出的边沿转换同步，以将峰值电感电流保持在指定范围内，并有选择地将电感中的能量转移到负载或返回到变压器。
-
公开(公告)号：US20150326126A1
公开(公告)日：2015-11-12
申请号：US14706656
申请日：2015-05-07
Applicant: Cirrus Logic, Inc.
Inventor： Siddharth Maru , Eric J. King
IPC: H02M3/158
CPC classification number: H03F1/083 , G05F1/575 , H02M3/158 , H03F1/0277 , H03F3/181 , H03F3/217 , H03F3/2178 , H03F2200/03 , H03F2200/372
Abstract: A power converter may include a power inductor, a plurality of switches arranged to sequentially operate in a plurality of switch configurations, an output for producing the output voltage, wherein a first switch is coupled to a first output terminal of the output and a second switch is coupled to a second output terminal of the output, and a linear amplifier coupled to the output. The controller may be configured to, in a linear amplifier mode of the power stage, enable the linear amplifier to transfer electrical energy from an input source of the power stage to the load, and in at least one mode of the power stage other than the linear amplifier mode, sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer the electrical energy from the input source to the load.
Abstract translation: 功率转换器可以包括功率电感器，多个开关，被布置成顺序地以多个开关配置工作，用于产生输出电压的输出，其中第一开关耦合到输出端的第一输出端，第二开关 耦合到输出的第二输出端，以及耦合到输出的线性放大器。 控制器可以被配置为在功率级的线性放大器模式中使得线性放大器能够将电能从功率级的输入源传输到负载，并且在功率级的至少一种模式中，除了 线性放大器模式，顺序地从多个开关配置施加开关配置，以选择性地激活或去激活多个开关中的每一个，以将电能从输入源传输到负载。
-
公开(公告)号：US20150326125A1
公开(公告)日：2015-11-12
申请号：US14706587
申请日：2015-05-07
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , John L. Melanson , Siddharth Maru
IPC: H02M3/158
CPC classification number: H03F1/083 , G05F1/575 , H02M3/158 , H03F1/0277 , H03F3/181 , H03F3/217 , H03F3/2178 , H03F2200/03 , H03F2200/372
Abstract: In accordance with embodiments of the present disclosure, a system may include an impedance estimator configured to estimate an impedance of a load and generate a target current based at least on an input voltage and the impedance, a voltage feedback loop responsive to a difference between the input voltage and an output voltage of the load, and a current controller configured to, responsive to the voltage feedback loop, the impedance estimator, and the input voltage, generate an output current to the load.
Abstract translation: 根据本公开的实施例，系统可以包括阻抗估计器，其被配置为基于至少基于输入电压和阻抗来估计负载的阻抗并产生目标电流，电压反馈环路响应于 输入电压和负载的输出电压;以及电流控制器，被配置为响应于电压反馈环路，阻抗估计器和输入电压，产生到负载的输出电流。
-
公开(公告)号：US20150264762A1
公开(公告)日：2015-09-17
申请号：US14727995
申请日：2015-06-02
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric J. King
IPC: H05B33/08
CPC classification number: H05B33/0815 , H02M1/4225 , H02M2001/0045 , H05B33/0842 , H05B41/245 , H05B41/2928 , H05B41/34 , Y02B20/346 , Y02B70/126
Abstract: A lighting system includes one or more methods and systems to control dissipation of excess power in the lighting system when the power into a switching power converter from a leading edge, phase-cut dimmer is greater than the power out of the switching power converter. In at least one embodiment, the lighting system includes a controller that controls dissipation of excess energy in the lighting system to prevent a premature disconnection of the phase-cut dimmer. In at least one embodiment, the controller actively controls power dissipation by generating one or more signals to actively and selectively control power dissipation in the lighting system. By actively and selectively controlling power dissipation in the lighting system, the controller intentionally dissipates power when the power into the lighting system should be greater than the power out to a lamp of the lighting system. In at least one embodiment, the controller creates one or more intermixed and/or interspersed power dissipation phases with one or more switching power converter charging and/or flyback phases.
Abstract translation: 照明系统包括一个或多个方法和系统，用于当来自前沿的切换调光器的功率大于开关功率转换器的功率时，控制照明系统中多余功率的耗散。 在至少一个实施例中，照明系统包括控制器，其控制照明系统中的多余能量的耗散以防止相位切割调光器的过早断开。 在至少一个实施例中，控制器通过产生一个或多个信号主动地和有选择地控制照明系统中的功率耗散来主动地控制功率耗散。 通过积极和选择性地控制照明系统中的功率消耗，当进入照明系统的电力应大于照明系统的灯的电力时，控制器有意地耗散功率。 在至少一个实施例中，控制器利用一个或多个开关功率转换器充电和/或反激阶段创建一个或多个混合和/或散置的功率耗散相位。
-
公开(公告)号：US20150054418A1
公开(公告)日：2015-02-26
申请号：US14477297
申请日：2014-09-04
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , John L. Melanson
CPC classification number: H05B33/0815 , H05B37/02 , H05B39/044 , Y10S315/04
Abstract: A system and method includes a controller that is configured to coordinate (i) a low impedance path for a dimmer current, (ii) attaching a dimmer to a power converter system at the leading edge of a phase-cut, rectified input voltage, (iii), control of switch mode power conversion, and (iv) an inactive state to, for example, reduce the dimmer current while allowing a dimmer to function normally from cycle to cycle of an alternating current (AC) supply voltage. In at least one embodiment, the dimmer functions normally when the dimmer conducts at a correct phase angle indicated by a dimmer input setting and avoids prematurely resetting while conducting. In at least one embodiment, by coordinating functions (i), (ii), (iii), and (iv) the controller controls a power converter system that is compatible with a triac-based dimmer.
Abstract translation: 一种系统和方法包括控制器，其被配置为协调（i）用于调光器电流的低阻抗路径，（ii）在相切割整流的输入电压的前沿将调光器附接到功率转换器系统（ iii），开关模式功率转换的控制，以及（iv）非活动状态，例如降低调光器电流，同时允许调光器从交流（AC）电源电压的周期到周期正常工作。 在至少一个实施例中，当调光器以由调光器输入设置指示的正确相位角传导时，调光器正常工作，并避免在导通时过早复位。 在至少一个实施例中，通过协调功能（i），（ii），（iii）和（iv），控制器控制与基于三端双向可控硅的调光器兼容的功率转换器系统。
-
Patent Agency Ranking
公开(公告)号：US20140333205A1
公开(公告)日：2014-11-13
申请号：US14276535
申请日：2014-05-13
Applicant: Cirrus Logic, Inc.
Inventor： Michael A. Kost , Eric J. King , John L. Melanson , Kan Wang , Ramin Zanbaghi
CPC classification number: H02M5/458 , H05B33/0815 , H05B33/0887
Abstract: An electronic transformer stabilization circuit includes a detection circuit and a reactive load. The detection circuit may be configured to receive a transformer output or a transformer signal derived from the transformer output. The detection circuit may determine whether the transformer that generated the transformer output is an electronic transformer. The determination may be made based on the presence of absence of high frequency components in the transformer output. Responsive to determining that an electronic transformer generated the transformer output, the stabilization circuit may operate a switch to connect the reactive load across an output of the transformer. The reactive load may include an inductor and may be configured to draw a stabilization current from the transformer. The stabilization current may ensure that the total current drawn from the transformer exceeds an oscillation current required to maintain reliable operation of the electronic transformer.
Abstract translation: 电子变压器稳定电路包括检测电路和无功负载。 检测电路可以被配置为接收从变压器输出导出的变压器输出或变压器信号。 检测电路可以确定产生变压器输出的变压器是电子变压器。 可以基于变压器输出中是否存在高频分量进行确定。 响应于确定电子变压器产生变压器输出，稳定电路可以操作开关以连接变压器输出端上的无功负载。 无功负载可以包括电感器，并且可以被配置成从变压器抽出稳定电流。 稳定电流可以确保从变压器抽出的总电流超过维持电子变压器可靠运行所需的振荡电流。
-
公开(公告)号：US09831839B2
公开(公告)日：2017-11-28
申请号：US15451882
申请日：2017-03-07
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , Christophe J. Amadi , John L. Melanson
CPC classification number: H03F3/2175 , H03F1/0277 , H03F1/083 , H03F3/181 , H03F3/185 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/231
Abstract: A method for producing an output voltage to a load may include, in a power stage comprising power converter having a power inductor, a plurality of switches arranged to sequentially operate in a plurality of switch configurations, and an output for producing the output voltage comprising a first output terminal and a second output terminal, controlling the linear amplifier to transfer electrical energy from the input source of the power stage to the load in accordance with one or more least significant bits of a digital input signal, and controlling the power converter in accordance with bits of the digital input signal other than the one or more least significant bits to sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer electrical energy from the input source of the power stage to the load.
-
公开(公告)号：US09207265B1
公开(公告)日：2015-12-08
申请号：US13942466
申请日：2013-07-15
Applicant: Cirrus Logic, Inc.
Inventor： Robert T. Grisamore , Firas S. Azrai , Mohit Sood , John L. Melanson , Eric J. King , Jean-Charles Pina
CPC classification number: H05B33/0815 , G01R19/0046 , H05B33/0848 , H05B37/0218 , H05B37/0263 , Y02B20/346
Abstract: In at least one embodiment, a lighting system receives an input signal, such as a supply voltage, that can be affected by a dimmer. The supply voltage can be affected by a dimmer when, for example, a dimmer phase cut (i.e. chopped) the supply voltage. A dimmer detection system of the lighting system determines if a dimmer is affecting the supply voltage. In at least one embodiment, the dimmer detection system also determines a type of the dimmer, such as detecting if the dimmer is a leading edge or trailing edge dimmer. In at least one embodiment, the dimmer detection system provides dimmer type data to one or more other circuits such as a switching power converter controller. The one or more other circuits utilize the dimmer type data to affect their operation.
Abstract translation: 在至少一个实施例中，照明系统接收可以受到调光器影响的诸如电源电压的输入信号。 当例如电源电压的调光相切（即切断）时，电源电压可能受到调光器的影响。 照明系统的调光器检测系统确定调光器是否影响电源电压。 在至少一个实施例中，调光器检测系统还确定调光器的类型，例如检测调光器是前缘还是后缘调光器。 在至少一个实施例中，调光器检测系统向诸如开关功率转换器控制器的一个或多个其它电路提供调光器类型的数据。 一个或多个其他电路利用调光器类型的数据来影响其操作。
-
公开(公告)号：US09167662B2
公开(公告)日：2015-10-20
申请号：US13774914
申请日：2013-02-22
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , John L. Melanson , Daniel J. Baker , Mohit Sood , Rahul Singh
CPC classification number: H05B37/02 , H05B33/0815 , H05B33/0845
Abstract: In at least one embodiment, a system and method provide current compensation in a lighting system by controlling a lamp current to prevent a current through a triac-based dimmer from undershooting a holding current value. In at least one embodiment, at least one of the lamps includes a controller that controls circuitry in the lamp to draw more lamp current for a period of time than needed to illuminate a brightness of the lamp at a level corresponding to particular phase-cut angle of the supply voltage. By drawing more current than needed, the controller increases the dimmer current during the period of time to prevent the dimmer current from falling below the holding current value. In at least one embodiment, the period of time corresponds to a compensating pulse of the lamp current at a time when the dimmer current would otherwise fall below the holding current value.
Abstract translation: 在至少一个实施例中，系统和方法通过控制灯电流来提供照明系统中的电流补偿，以防止通过基于三端双向可控硅开关控制器的调光器的电流低于保持电流值。 在至少一个实施例中，灯中的至少一个包括控制器，该控制器控制灯中的电路，以在比与特定相切角对应的水平下照亮灯的亮度所需的时间段吸取更多的灯电流 的电源电压。 通过吸收比所需更多的电流，控制器在一段时间内增加调光器电流，以防止调光器电流降至保持电流值以下。 在至少一个实施例中，该时间段对应于当调光电流否则将低于保持电流值时的灯电流的补偿脉冲。
-
20.发明授权公开(公告)号：US09155163B2
公开(公告)日：2015-10-06
申请号：US14012775
申请日：2013-08-28
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric J. King
CPC classification number: H05B37/02 , H05B33/0815 , H05B33/0851 , H05B39/048
Abstract: In at least one embodiment, an electronic system includes a controller, and the controller provides compatibility between an electronic light source and a trailing edge dimmer. In at least one embodiment, the controller is capable of predicting an estimated occurrence of a trailing edge of a phase cut AC voltage and accelerating a transition of the phase cut AC voltage from the trailing edge to a predetermined voltage threshold. In at least one embodiment, the controller predicts an estimated occurrence of the trailing edge of the phase cut AC voltage on the basis of actual observations from one or more previous cycles of the phase cut AC voltage.
Abstract translation: 在至少一个实施例中，电子系统包括控制器，并且控制器提供电子光源和后缘调光器之间的兼容性。 在至少一个实施例中，控制器能够预测相切切AC电压的后沿的估计出现并且加速相切切断AC电压从后沿到预定电压阈值的转变。 在至少一个实施例中，控制器基于来自相切切断AC电压的一个或多个先前循环的实际观察值来预测相切切AC电压的后沿的估计出现。
-
-
-
-
-
-
-
-
-
Search Results
38
records
(took 0.025 seconds)
