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公开(公告)号：US09698732B2
公开(公告)日：2017-07-04
申请号：US14706656
申请日：2015-05-07
Applicant: Cirrus Logic, Inc.
Inventor： Siddharth Maru , Eric J. King
CPC classification number: H03F1/083 , G05F1/575 , H02M3/158 , H03F1/0277 , H03F3/181 , H03F3/217 , H03F3/2178 , H03F2200/03 , H03F2200/372
Abstract: A controller may be configured to sequentially apply a plurality of switch configurations of a power converter in order to operate the power converter as a differential output converter to switch a polarity of the output voltage, such that: during a charging phase of the power converter, a power inductor is coupled between one of a first terminal and a second terminal of the power source and one of a first terminal and a second terminal of the output load, during a transfer phase of the power converter, at least one of the plurality of switches is activated in order to couple the power inductor between the second terminal of the power source and one of the first terminal of the output load and the second terminal of the output load, wherein the output voltage is a differential voltage between the first terminal and the second terminal.
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公开(公告)号：US20170179895A1
公开(公告)日：2017-06-22
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.
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公开(公告)号：US09654056B2
公开(公告)日：2017-05-16
申请号：US14706680
申请日：2015-05-07
Applicant: Cirrus Logic, Inc.
Inventor： Christophe J. Amadi , Siddharth Maru , Eric J. King
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.
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公开(公告)号：US09595868B2
公开(公告)日：2017-03-14
申请号：US14612734
申请日：2015-02-03
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric J. King
CPC classification number: H02M3/1582 , H02M3/1588 , H03F1/0227 , H03F3/181 , H03F3/217
Abstract: A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based on a measured parameter associated with the switching power stage, select a selected operational mode of the power converter from a plurality of operational modes, and 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 an input source of the power converter to the load in accordance with the selected operational mode.A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based at least on an input signal to the switching power stage, determine the differential output voltage to be driven at the load, and based on the differential output voltage to be driven at the load, apply a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage.A method may include sequentially applying a plurality of switch configurations in a power converter to selectively activate or deactivate each of the plurality of switches in order operate the power converter as a differential output buck converter, such that: during a charging phase of the power converter, the power inductor is coupled between (i) one of a first terminal of a power source and a second terminal of the power source and (ii) one of a first terminal of the output load and a second terminal of the output load; during a transfer phase of the power converter, at least one of the plurality of switches is activated in order to couple the power inductor between the first terminal of the output load and a second terminal of the output load; and the output voltage is a differential voltage between the first and second terminal of the output load.
Abstract translation: 方法可以包括在功率转换器中顺序地施加多个开关配置以选择性地激活或去激活多个开关中的每一个，以便将功率转换器作为差分输出降压转换器操作，使得：在功率转换器的充电阶段期间 功率电感器耦合在（i）电源的第一端和电源的第二端之一以及（ii）输出负载的第一端和输出负载的第二端之一; 在功率转换器的传送阶段期间，激活多个开关中的至少一个以便在输出负载的第一端子和输出负载的第二端子之间耦合功率电感器; 并且输出电压是输出负载的第一和第二端子之间的差分电压。
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公开(公告)号：US20150326187A1
公开(公告)日：2015-11-12
申请号：US14706624
申请日：2015-05-07
Applicant: Cirrus Logic, Inc.
Inventor： Siddharth Maru , Eric J. King
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。
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Patent Agency Ranking
26.发明申请SWITCHING POWER CONVERTER INPUT VOLTAGE APPROXIMATE ZERO CROSSING DETERMINATION 审中-公开切换电源转换器输入电压近似零交叉测量公开(公告)号：US20150171853A1
公开(公告)日：2015-06-18
申请号：US14104137
申请日：2013-12-12
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , John L. Melanson
CPC classification number: H03K17/13 , H05B33/0815 , H05B33/0845 , Y02B20/346
Abstract: In at least one embodiment, the controller senses a leading edge, phase cut AC input voltage value to a switching power converter during a cycle of the AC input voltage. The controller senses the voltage value at a time prior to a zero crossing of the AC input voltage and utilizes the voltage value to determine the approximate zero crossing. In at least one embodiment, by determining an approximate zero crossing of the AC input voltage, the controller is unaffected by any disturbances of the dimmer that could otherwise make detecting the zero crossing problematic. The particular way of determining an approximate zero crossing is a matter of design choice. In at least one embodiment, the controller approximates the AC input voltage using a function that estimates a waveform of the AC input voltage and determines the approximate zero crossing of the AC input voltage from the approximation of the AC input voltage.
Abstract translation: 在至少一个实施例中，控制器在交流输入电压的周期期间感测到开关功率转换器的前沿，相切割AC输入电压值。 控制器感测交流输入电压过零之前的电压值，并利用电压值来确定近似过零点。 在至少一个实施例中，通过确定AC输入电压的近似零交叉，控制器不受调光器的任何干扰影响，否则可能会使检测到零交叉问题。 确定近似过零点的具体方法是设计选择的问题。 在至少一个实施例中，控制器使用估计AC输入电压的波形的函数来近似AC输入电压，并根据AC输入电压的近似确定AC输入电压的近似过零点。
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27.发明申请SYSTEMS AND METHODS FOR LOW-POWER LAMP COMPATIBILITY WITH A LEADING-EDGE DIMMER AND AN ELECTRONIC TRANSFORMER 有权用于低功率灯兼容性的系统和方法与引线边缘调光器和电子变压器公开(公告)号：US20140167639A1
公开(公告)日：2014-06-19
申请号：US13903591
申请日：2013-05-28
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , Daniel J. Baker , John L. Melanson
IPC: F21V23/02
CPC classification number: F21V23/02 , H05B33/0815
Abstract: Methods and systems to provide compatibility between a load and a secondary winding of an electronic transformer driven by a leading-edge dimmer may include: (a) responsive to determining that energy is available from the electronic transformer, drawing a requested amount of power from the electronic transformer thus transferring energy from the electronic transformer to an energy storage device in accordance with the requested amount of power; and (b) transferring energy from the energy storage device to the load at a rate such that a voltage of the energy storage device is regulated within a predetermined voltage range.
Abstract translation: 提供由前缘调光器驱动的电子变压器的负载和次级绕组之间的兼容性的方法和系统可以包括：（a）响应于确定来自电子变压器的能量可用，从 电子变压器，因此根据所要求的功率量将能量从电子变压器传输到能量存储装置; 和（b）以能够将能量存储装置的电压调节到规定的电压范围内的速度将能量从能量存储装置传递给负载。
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28.发明申请公开(公告)号：US20130342123A1
公开(公告)日：2013-12-26
申请号：US14012775
申请日：2013-08-28
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric J. King
IPC: H05B37/02
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。
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公开(公告)号：US20130221871A1
公开(公告)日：2013-08-29
申请号：US13774914
申请日：2013-02-22
Applicant: CIRRUS LOGIC, INC.
Inventor： Eric J. King , John L. Melanson , Daniel J. Baker
IPC: H05B37/02
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：US10116215B2
公开(公告)日：2018-10-30
申请号：US14612889
申请日：2015-02-03
Applicant: Cirrus Logic, Inc.
Inventor： Eric Swanson , John L. Melanson , John C. Tucker , Eric J. King
Abstract: A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based on a measured parameter associated with the switching power stage, select a selected operational mode of the power converter from a plurality of operational modes, and 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 an input source of the power converter to the load in accordance with the selected operational mode.
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