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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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12.发明授权Two terminal drive of bipolar junction transistor (BJT) of a light emitting diode (LED)-based bulb 有权基于发光二极管（LED）的灯泡的双极结型晶体管（BJT）的两端驱动器公开(公告)号：US09496855B2
公开(公告)日：2016-11-15
申请号：US14444087
申请日：2014-07-28
Applicant: Cirrus Logic, Inc.
Inventor： Siddharth Maru , John L. Melanson , Rahul Singh , Eric King , Thirumalai Rengachari , Ramin Zanbaghi , Arnab Kumar Dutta
CPC classification number: H03K4/48 , H05B33/0815 , H05B37/02 , Y02B20/347
Abstract: A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as for LED-based light bulbs. The BJT may be switched on and off from a controller coupled to two terminals of the BJT. Through the two terminals, the control IC may dynamically adjust a reverse recovery time period of the BJT. The reverse recovery time period may be adjusted by changing an amount of base charge that accumulates on the BJT. Additional, the reverse recovery may be controlled through the use of a reverse base current source applied to the BJT after beginning switching off the BJT.
Abstract translation: 双极结型晶体管（BJT）可用于功率级DC-DC转换器，例如用于基于LED的灯泡。 BJT可以从耦合到BJT的两个端子的控制器接通和断开。 通过两个端子，控制IC可以动态地调整BJT的反向恢复时间段。 可以通过改变在BJT上积累的基本电荷的量来调整反向恢复时间段。 此外，可以通过在开始关闭BJT之后使用施加到BJT的反向基极电流源来控制反向恢复。
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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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14.发明授权High-efficiency lighting devices having dimmer and/or load condition measurement 有权具有调光和/或负载状态测量的高效照明装置公开(公告)号：US09101010B2
公开(公告)日：2015-08-04
申请号：US14212546
申请日：2014-03-14
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric King , Siddharth Maru
CPC classification number: H05B33/0806 , H05B33/0845 , H05B33/0848 , H05B39/044 , Y02B20/383
Abstract: A circuit for powering high-efficiency lighting devices from a thyristor-controlled dimmer includes a power converter for powering the high-efficiency lighting devices from input terminals of the circuit. The circuit also includes a control circuit that controls the input current drawn by the input terminals at least while the power converter transfers energy to the lighting devices. The circuit also includes a sensing circuit that determines or measures at least one attach current characteristic at the input terminals and stores an indication of the characteristic for subsequent operation of the control circuit.
Abstract translation: 用于从晶闸管控制的调光器为高效照明装置供电的电路包括用于从电路的输入端为高效照明装置供电的电力转换器。 该电路还包括控制电路，其至少在电力转换器将能量传递到照明装置时，控制由输入端子汲取的输入电流。 电路还包括感测电路，其确定或测量输入端子处的至少一个附着电流特性，并存储用于控制电路的后续操作的特性指示。
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15.发明申请COMPENSATING FOR A REVERSE RECOVERY TIME PERIOD OF A BIPOLAR JUNCTION TRANSISTOR (BJT) IN SWITCH-MODE OPERATION OF A LIGHT-EMITTING DIODE (LED)-BASED BULB 有权双极性晶体管（BJT）在发光二极管（LED）的开关模式操作中的反向恢复时间周期的补偿公开(公告)号：US20150028768A1
公开(公告)日：2015-01-29
申请号：US14341984
申请日：2014-07-28
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Thirumalai Rengachari , Siddharth Maru , Ramin Zanbaghi , Firas Azrai , Rahul Singh
CPC classification number: H05B33/0815 , H02M3/156 , H05B33/0845 , H05B37/02
Abstract: A turn-off transition time period, also referred to as a reverse recovery time period, may be compensated for by a controller of a power stage including a bipolar junction transistor (BJT). The reverse recovery time period may be measured in one switching cycle and a subsequent switching cycle may include compensations based on the measured reverse recovery time period. That is the switching on and off of the BJT may be compensated to obtain a desired average output current to a load. When the reverse recovery time period is known, an error in the peak current obtained due to the reverse recovery time period may be calculated. The calculated error may be used to offset the target peak current for controlling the switching of the BJT to begin a turn-off transition of the BJT earlier in a switching cycle and thus reduce error in peak current at the BJT.
Abstract translation: 还可以通过包括双极结型晶体管（BJT）的功率级的控制器补偿关断转换时间段（也称为反向恢复时间周期）。 可以在一个开关周期内测量反向恢复时间段，并且随后的开关周期可以包括基于所测量的反向恢复时间段的补偿。 也就是说，可以补偿BJT的接通和断开以获得期望的负载平均输出电流。 当已知反向恢复时间周期时，可以计算由于反向恢复时间段而获得的峰值电流的误差。 计算出的误差可用于偏移目标峰值电流，以控制BJT的开关，以便在开关周期中较早地开始BJT的关断转换，从而减小BJT的峰值电流误差。
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Patent Agency Ranking
16.发明申请Controlled Electronic System Power Dissipation via an Auxiliary-Power Dissipation Circuit 审中-公开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
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Prashanth Drakshapalli , Siddharth Maru , Rahul Singh
IPC: H05B33/08
CPC classification number: H05B33/0809 , H05B33/0815 , H05B33/0848 , Y02B20/346 , Y02B20/383
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US10812024B2
公开(公告)日：2020-10-20
申请号：US14706587
申请日：2015-05-07
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , John L. Melanson , Siddharth Maru
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.
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公开(公告)号：US09577587B2
公开(公告)日：2017-02-21
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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19.发明授权Compensating for a reverse recovery time period of a bipolar junction transistor (BJT) in switch-mode operation of a light-emitting diode (LED)-based bulb 有权在基于发光二极管（LED）的灯泡的开关模式操作中补偿双极结型晶体管（BJT）的反向恢复时间周期公开(公告)号：US09504106B2
公开(公告)日：2016-11-22
申请号：US14341984
申请日：2014-07-28
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Thirumalai Rengachari , Siddharth Maru , Ramin Zanbaghi , Firas Azrai , Rahul Singh
CPC classification number: H05B33/0815 , H02M3/156 , H05B33/0845 , H05B37/02
Abstract: A turn-off transition time period, also referred to as a reverse recovery time period, may be compensated for by a controller of a power stage including a bipolar junction transistor (BJT). The reverse recovery time period may be measured in one switching cycle and a subsequent switching cycle may include compensations based on the measured reverse recovery time period. That is the switching on and off of the BJT may be compensated to obtain a desired average output current to a load. When the reverse recovery time period is known, an error in the peak current obtained due to the reverse recovery time period may be calculated. The calculated error may be used to offset the target peak current for controlling the switching of the BJT to begin a turn-off transition of the BJT earlier in a switching cycle and thus reduce error in peak current at the BJT.
Abstract translation: 还可以通过包括双极结型晶体管（BJT）的功率级的控制器补偿关断转换时间段（也称为反向恢复时间周期）。 可以在一个开关周期内测量反向恢复时间段，并且随后的开关周期可以包括基于所测量的反向恢复时间段的补偿。 也就是说，可以补偿BJT的接通和断开以获得期望的负载平均输出电流。 当已知反向恢复时间周期时，可以计算由于反向恢复时间段而获得的峰值电流的误差。 计算出的误差可用于偏移目标峰值电流，以控制BJT的开关，以便在开关周期中较早地开始BJT的关断转换，从而减小BJT的峰值电流误差。
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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。
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