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1.发明申请SYSTEMS AND METHODS FOR MINIMIZING POWER DISSIPATION IN A LOW-POWER LAMP COUPLED TO A TRAILING-EDGE DIMMER 有权用于最小化功率放大器的系统和方法，该功率放大器与耦合在一起的调光器公开(公告)号：US20150305107A1
公开(公告)日：2015-10-22
申请号：US14333065
申请日：2014-07-16
Applicant: Cirrus Logic, Inc.
Inventor： Mohit Sood , Vishwanathan Subramanian
CPC classification number: H05B33/0845 , H02M7/04 , H05B37/02 , H05B39/048
Abstract: A controller may predict an estimated occurrence of a high-resistance state of a dimmer, wherein the high-resistance state occurs when the dimmer begins phase-cutting an alternating current voltage signal. The controller may also be configured to operate in a trailing-edge exposure mode for a period of time wherein the period of time includes a time of the estimated occurrence of the high-resistance state in order to allow the controller to detect the occurrence of the high-resistance state, wherein energy is transferred from an input to a dissipative element during the trailing-edge exposure mode. The controller may further be configured to minimize a time between a beginning of the period of time and the estimated occurrence of the high-resistance state by modifying the period of time based on an estimated charging time of a capacitor of the dimmer.
Abstract translation: 控制器可以预测调光器的高电阻状态的估计出现，其中当调光器开始切割交流电压信号时，发生高电阻状态。 控制器还可以被配置为在后沿曝光模式下操作一段时间，其中该时间段包括估计出现高电阻状态的时间，以便允许控制器检测到 高电阻状态，其中在后缘曝光模式期间能量从输入传递到耗散元件。 控制器还可以被配置为通过基于调光器的电容器的估计充电时间来修改时间段来最小化时间段的开始和估计的高电阻状态的发生之间的时间。
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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。
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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。
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公开(公告)号：US20130154496A1
公开(公告)日：2013-06-20
申请号：US13715914
申请日：2012-12-14
Applicant: Cirrus Logic, Inc.
Inventor： Siddharth Maru , Zhaohui He , Mohit Sood
CPC classification number: 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
Abstract: In at least one embodiment, an electronic system and method includes a controller to control a switching power converter in at least two different modes of operation depending on whether the controller detects a dimmer or not and/or whether a load requests more power than either of the two operational modes can provide. In at least one embodiment, the controller detects whether a dimmer is phase cutting an input voltage to a switching power converter. The controller operates the switching power converter in a first mode if the dimmer is detected, and the controller operates the switching power converter in a second mode if the dimmer is not detected. The controller also transitions between operating the switching power converter in the first mode and the second mode if a status of detection of the dimmer changes.
Abstract translation: 在至少一个实施例中，电子系统和方法包括控制器，用于根据控制器是否检测到调光器和/或负载是否要求比任何一个调光器更多的功率来控制至少两种不同的操作模式的开关功率转换器 两种操作模式可以提供。 在至少一个实施例中，控制器检测调光器是否相位切割到开关功率转换器的输入电压。 如果检测到调光器，则控制器以第一模式操作开关功率转换器，并且如果未检测到调光器，则控制器在第二模式下操作开关功率转换器。 如果调光器的检测状态改变，则控制器还在第一模式中操作开关电源转换器和第二模式之间转换。
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公开(公告)号：US09184666B2
公开(公告)日：2015-11-10
申请号：US13833587
申请日：2013-03-15
Applicant: Cirrus Logic, Inc.
Inventor： Mohit Sood , Spencer Isaacson , Rahul Singh , Zhaohui He
CPC classification number: H02M3/33523 , H02M3/335 , H03K17/145 , H05B33/0815 , H05B33/0848 , H05B33/0884 , Y02B20/341 , Y10T307/406 , Y10T307/832
Abstract: A system and method include a controller that reduces power dissipated by a switch, such as a source-controlled field effect transistor, when an estimated amount of power dissipated by the switch exceeds a predetermined threshold. Reducing the power dissipated by the switch prevents damage to the switch due to overheating. The controller determines the estimated amount of power dissipated by the switch using actual drain-to-source current and drain voltage data. In at least one embodiment, the controller includes a fail-safe, estimated power dissipation determination path that activates when the drain voltage data fails a reliability test. Additionally, in at least one embodiment, the controller includes a model of thermal characteristics of the switch. In at least one embodiment, the controller utilizes real-time estimated power dissipation by the switch and the model to determine when the estimated power dissipated by the switch exceeds a power dissipation protection threshold.
Abstract translation: 一种系统和方法包括当由开关消耗的估计功率超过预定阈值时，减少由诸如源极控制的场效应晶体管等开关消耗的功率的控制器。 降低开关消耗的功率可以防止由于过热而损坏开关。 控制器使用实际的漏极 - 源极电流和漏极电压数据确定开关耗散的功率的估计量。 在至少一个实施例中，控制器包括故障安全的估计功率耗散确定路径，当漏极电压数据失败可靠性测试时激活。 另外，在至少一个实施例中，控制器包括开关的热特性模型。 在至少一个实施例中，控制器利用开关和模型的实时估计的功率消耗来确定由开关消耗的估计功率何时超过功率耗散保护阈值。
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Patent Agency Ranking
6.发明申请ACCELERATION OF OUTPUT ENERGY PROVISION FOR A LOAD DURING START-UP OF A SWITCHING POWER CONVERTER 有权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
Applicant: CIRRUS LOGIC, INC.
Inventor： Siddharth Maru , Zhaohui He , Mohit Sood , Prashanth Drakshapalli , Rahul Singh
IPC: H02M3/335
CPC classification number: H02M3/33523 , H02M3/335 , H03K17/145 , H05B33/0815 , H05B33/0848 , H05B33/0884 , Y02B20/341 , Y10T307/406 , Y10T307/832
Abstract: 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.
Abstract translation: 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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7.发明授权Systems and methods for minimizing power dissipation in a low-power lamp coupled to a trailing-edge dimmer 有权用于最小化耦合到后缘调光器的低功率灯中的功率耗散的系统和方法公开(公告)号：US09215772B2
公开(公告)日：2015-12-15
申请号：US14333065
申请日：2014-07-16
Applicant: Cirrus Logic, Inc.
Inventor： Mohit Sood , Vishwanathan Subramanian
CPC classification number: H05B33/0845 , H02M7/04 , H05B37/02 , H05B39/048
Abstract: A controller may predict an estimated occurrence of a high-resistance state of a dimmer, wherein the high-resistance state occurs when the dimmer begins phase-cutting an alternating current voltage signal. The controller may also be configured to operate in a trailing-edge exposure mode for a period of time wherein the period of time includes a time of the estimated occurrence of the high-resistance state in order to allow the controller to detect the occurrence of the high-resistance state, wherein energy is transferred from an input to a dissipative element during the trailing-edge exposure mode. The controller may further be configured to minimize a time between a beginning of the period of time and the estimated occurrence of the high-resistance state by modifying the period of time based on an estimated charging time of a capacitor of the dimmer.
Abstract translation: 控制器可以预测调光器的高电阻状态的估计出现，其中当调光器开始切割交流电压信号时，发生高电阻状态。 控制器还可以被配置为在后沿曝光模式下操作一段时间，其中该时间段包括估计出现高电阻状态的时间，以便允许控制器检测到 高电阻状态，其中在后缘曝光模式期间能量从输入传递到耗散元件。 控制器还可以被配置为通过基于调光器的电容器的估计充电时间来修改时间段来最小化时间段的开始和估计的高电阻状态的发生之间的时间。
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8.发明授权公开(公告)号：US09214862B2
公开(公告)日：2015-12-15
申请号：US14495564
申请日：2014-09-24
Applicant: Cirrus Logic, Inc.
Inventor： Poornima Mazumdar , Mohit Sood , Rahul Singh , Sahil Singh
CPC classification number: H02M3/156 , H02M3/33507 , H02M2001/0054 , H02M2001/0058 , Y02B70/1491
Abstract: A controller may be configured to generate a control signal to activate and deactivate a switch of a switching power converter in order to control a switching period and a peak current of the switching power converter to maintain a regulated current of the switching power converter at a desired current level such that: if the switching period decreases below a minimum switching period, the controller increases the switching period by a ringing period of a voltage of the switch and increases the peak current to compensate for the increase of the switching period in order to maintain the regulated current, and if the peak current increases above a maximum peak current, the controller decreases the switching period by a ringing period of the voltage of the switch and decreases the peak current to compensate for the decrease of the switching period in order to maintain the regulated current.
Abstract translation: 控制器可以被配置为产生控制信号以激活和停用开关功率转换器的开关，以便控制开关功率转换器的开关周期和峰值电流，以将开关功率转换器的调节电流保持在期望的 电流电平使得：如果开关周期降低到最小开关周期以下，则控制器将开关周期增加开关电压的振铃周期，并增加峰值电流以补偿开关周期的增加以便维持 调节电流，并且如果峰值电流增加到最大峰值电流以上，则控制器将开关周期减小开关的电压的振铃周期，并降低峰值电流以补偿开关周期的减小以便维持 调节电流。
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公开(公告)号：US09178444B2
公开(公告)日：2015-11-03
申请号：US13715914
申请日：2012-12-14
Applicant: Cirrus Logic, Inc.
Inventor： Siddharth Maru , Zhaohui He , Mohit Sood
CPC classification number: 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
Abstract: In at least one embodiment, an electronic system and method includes a controller to control a switching power converter in at least two different modes of operation depending on whether the controller detects a dimmer or not and/or whether a load requests more power than either of the two operational modes can provide. In at least one embodiment, the controller detects whether a dimmer is phase cutting an input voltage to a switching power converter. The controller operates the switching power converter in a first mode if the dimmer is detected, and the controller operates the switching power converter in a second mode if the dimmer is not detected. The controller also transitions between operating the switching power converter in the first mode and the second mode if a status of detection of the dimmer changes.
Abstract translation: 在至少一个实施例中，电子系统和方法包括控制器，用于根据控制器是否检测到调光器和/或负载是否要求比任何一个调光器更多的功率来控制至少两种不同的操作模式的开关功率转换器 两种操作模式可以提供。 在至少一个实施例中，控制器检测调光器是否相位切割到开关功率转换器的输入电压。 如果检测到调光器，则控制器以第一模式操作开关功率转换器，并且如果未检测到调光器，则控制器在第二模式下操作开关功率转换器。 如果调光器的检测状态改变，则控制器还在第一模式中操作开关功率转换器和第二模式之间转换。
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10.发明申请公开(公告)号：US20150303796A1
公开(公告)日：2015-10-22
申请号：US14495564
申请日：2014-09-24
Applicant: Cirrus Logic, Inc.
Inventor： Poornima Mazumdar , Mohit Sood , Rahul Singh , Sahil Singh
IPC: H02M3/156
CPC classification number: H02M3/156 , H02M3/33507 , H02M2001/0054 , H02M2001/0058 , Y02B70/1491
Abstract: A controller may be configured to generate a control signal to activate and deactivate a switch of a switching power converter in order to control a switching period and a peak current of the switching power converter to maintain a regulated current of the switching power converter at a desired current level such that: if the switching period decreases below a minimum switching period, the controller increases the switching period by a ringing period of a voltage of the switch and increases the peak current to compensate for the increase of the switching period in order to maintain the regulated current, and if the peak current increases above a maximum peak current, the controller decreases the switching period by a ringing period of the voltage of the switch and decreases the peak current to compensate for the decrease of the switching period in order to maintain the regulated current.
Abstract translation: 控制器可以被配置为产生控制信号以激活和停用开关功率转换器的开关，以便控制开关功率转换器的开关周期和峰值电流，以将开关功率转换器的调节电流保持在期望的 电流电平使得：如果开关周期降低到最小开关周期以下，则控制器将开关周期增加开关电压的振铃周期，并增加峰值电流以补偿开关周期的增加以便维持 调节电流，并且如果峰值电流增加到最大峰值电流以上，则控制器将开关周期减小开关的电压的振铃周期，并降低峰值电流以补偿开关周期的减小以便维持 调节电流。
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