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公开(公告)号：US20170231045A1
公开(公告)日：2017-08-10
申请号：US15018375
申请日：2016-02-08
Applicant: Cree, Inc.
Inventor： Yuequan Hu , Qingcong Hu
IPC: H05B33/08
CPC classification number: H05B33/0845 , H05B33/0812 , H05B33/0815 , H05B33/0851
Abstract: A solid state light fixture includes a light emitting diode (LED) load and a driver circuit that selectively provides one of a switched-mode drive current and a linear-mode drive current to the LED load in response to a dimming control signal.
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公开(公告)号：US20150312974A1
公开(公告)日：2015-10-29
申请号：US14292001
申请日：2014-05-30
Applicant: Cree, Inc.
Inventor： Qingcong Hu , Ashish Ekbote
IPC: H05B33/08
CPC classification number: F21K9/20 , F21K9/23 , F21K9/64 , F21S8/088 , F21V3/00 , F21V7/0066 , F21V14/04 , F21V17/02 , F21V23/007 , F21V23/06 , F21V29/503 , F21V29/773 , F21W2131/10 , F21W2131/103 , F21Y2101/00 , F21Y2107/30 , F21Y2115/10 , H01R43/00 , H05B33/08 , H05B33/0815 , H05B33/0827 , H05B33/0848 , H05B33/089 , Y02B20/341 , Y02B20/347
Abstract: A SEPIC driver circuit with low input current ripple is disclosed. Embodiments of the present invention provide a driver circuit that accommodates universal input, has a wide output voltage range and good efficiency. An LED lighting system using such as circuit is also disclosed. In at least some embodiments, the circuit is configured as a single-ended primary inductor converter circuit using a magnetic element, and a floating capacitor is connected between the input winding and the output winding of the magnetic element. In some embodiments, an inductor is also included at the DC input to the circuit. An output rectifier such as a diode can also be connected to the output winding of the magnetic element, and an output capacitor can be connected across the output of the circuit. An FET, a bipolar transistor, or a plurality of FETs can be used as the switching device.
Abstract translation: 公开了具有低输入电流纹波的SEPIC驱动电路。 本发明的实施例提供一种适应通用输入的驱动电路，具有宽的输出电压范围和良好的效率。 还公开了使用诸如电路的LED照明系统。 在至少一些实施例中，电路被配置为使用磁性元件的单端初级电感器转换器电路，并且浮置电容器连接在输入绕组和磁性元件的输出绕组之间。 在一些实施例中，电感器也包括在电路的DC输入端。 诸如二极管的输出整流器也可以连接到磁性元件的输出绕组，并且输出电容器可以跨越电路的输出端连接。 可以使用FET，双极晶体管或多个FET作为开关器件。
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3.发明授权Dual mode power supply controller with charge balance multipliers and charge balance multiplier circuits 有权具有电荷平衡乘法器和电荷平衡乘法器电路的双模式电源控制器公开(公告)号：US09509215B2
公开(公告)日：2016-11-29
申请号：US13734327
申请日：2013-01-04
Applicant: Cree, Inc.
Inventor： Michael Walters , Qingcong Hu
CPC classification number: H02M7/217 , H02M1/08 , H02M3/156 , H02M2001/0009 , H02M2001/0016 , H05B33/0815 , H05B33/0848
Abstract: A circuit for generating an output current includes a control signal generating circuit that is configured to generate a control signal. The control signal is a function of a level of an analog input voltage signal, and a level of the output current is a function of a level of an analog input current signal and the level of the analog input voltage signal.
Abstract translation: 用于产生输出电流的电路包括被配置为产生控制信号的控制信号发生电路。 控制信号是模拟输入电压信号的电平的函数，输出电流的电平是模拟输入电流信号的电平和模拟输入电压信号的电平的函数。
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公开(公告)号：US09484805B2
公开(公告)日：2016-11-01
申请号：US13664979
申请日：2012-10-31
Applicant: Cree, Inc.
Inventor： Michael Walters , Qingcong Hu
CPC classification number: H02M1/4225 , Y02B70/126
Abstract: A power conversion circuit includes a voltage boost circuit including a boost inductor configured to generate an output voltage in response to an input voltage, and a boost controller configured to control operation of the voltage boost circuit. The boost controller is configured to control operation of the voltage boost circuit in response to a level of current in the boost inductor.
Abstract translation: 电力转换电路包括升压电路，其包括响应于输入电压而被配置为产生输出电压的升压电感器和被配置为控制升压电路的操作的升压控制器。 升压控制器被配置为响应于升压电感器中的电流电平来控制升压电路的操作。
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5.发明授权Driving circuits for solid-state lighting apparatus with high voltage LED components and related methods 有权具有高压LED元件的固态照明装置的驱动电路及相关方法公开(公告)号：US08853958B2
公开(公告)日：2014-10-07
申请号：US13662618
申请日：2012-10-29
Applicant: Cree, Inc.
Inventor： Praneet Athalye , Qingcong Hu , Michael Walters , Eric Menzel , Michael James Harris
CPC classification number: H05B33/0815 , H05B33/0812 , Y02B20/46
Abstract: A driving circuit for a solid state lighting apparatus includes a full wave rectifier configured to rectify an alternating current (AC) input voltage signal to generate a rectified input signal, a boost conversion circuit configured to receive the rectified input signal and responsively generate a direct current (DC) output voltage signal and to supply the output voltage signal to a solid state light source, and a boost control circuit coupled to the boost conversion circuit and configured to cause the boost conversion circuit to operate in a constant power mode.
Abstract translation: 固体照明装置的驱动电路包括全波整流器，被配置为整流交流（AC）输入电压信号以产生整流输入信号;升压转换电路，被配置为接收经整流的输入信号并且响应地产生直流 （DC）输出电压信号，并将输出电压信号提供给固态光源，以及升压控制电路，其耦合到升压转换电路并且被配置为使升压转换电路以恒定功率模式工作。
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Patent Agency Ranking
6.发明申请Driving Circuits for Solid-State Lighting Apparatus With High Voltage LED Components and Related Methods 有权具有高压LED组件的固态照明设备的驱动电路及相关方法公开(公告)号：US20130127353A1
公开(公告)日：2013-05-23
申请号：US13662618
申请日：2012-10-29
Applicant: Cree, Inc.
Inventor： Praneet Athalye , Qingcong Hu , Michael Walters , Eric Menzel , Michael James Harris
IPC: H05B37/02
CPC classification number: H05B33/0815 , H05B33/0812 , Y02B20/46
Abstract: A driving circuit for a solid state lighting apparatus includes a full wave rectifier configured to rectify an alternating current (AC) input voltage signal to generate a rectified input signal, a boost conversion circuit configured to receive the rectified input signal and responsively generate a direct current (DC) output voltage signal and to supply the output voltage signal to a solid state light source, and a boost control circuit coupled to the boost conversion circuit and configured to cause the boost conversion circuit to operate in a constant power mode.
Abstract translation: 固体照明装置的驱动电路包括全波整流器，被配置为整流交流（AC）输入电压信号以产生整流输入信号;升压转换电路，被配置为接收经整流的输入信号并且响应地产生直流 （DC）输出电压信号，并将输出电压信号提供给固态光源，以及升压控制电路，其耦合到升压转换电路并且被配置为使升压转换电路以恒定功率模式工作。
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公开(公告)号：US20180172246A1
公开(公告)日：2018-06-21
申请号：US15386700
申请日：2016-12-21
Applicant: Cree, Inc.
Inventor： Donald Walker , Qingcong Hu , Boris Karpichev , Andrew Bendtsen , Kurt Wilcox
CPC classification number: F21V21/005 , F21S2/00 , F21S8/061 , F21V15/015 , F21V23/007 , F21V23/0442 , F21V23/0464 , F21V23/06 , F21Y2103/10 , F21Y2115/10 , G02B6/0078 , G02B6/0083
Abstract: A luminaire has a light emitting portion extending between first second end caps to define a length between the first end cap and the second end cap. The first end cap comprises a receptacle and the second end cap comprises a post both of which extend in an insertion direction. The receptacles are configured to closely receive the posts and the insertion direction is disposed transversely to the length. A method of assembling a luminaire assembly includes positioning a first end cap of a first luminaire over a second end cap of a second luminaire; moving the first end cap relative to the second end cap in the insertion direction; and inserting the post into the receptacle. An electrical connector on the first end cap may connect with a mating electrical connector on the second end cap to complete an electrical connection between the first luminaire and the second luminaire.
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公开(公告)号：US09871522B2
公开(公告)日：2018-01-16
申请号：US14701025
申请日：2015-04-30
Applicant: Cree, Inc.
Inventor： Qingcong Hu , Daniel Pope
IPC: H05B33/08 , H03K19/0185
CPC classification number: H03K19/018521 , H05B33/0815 , Y02B20/346
Abstract: A level shifting circuit can include a level shifting circuit input node that can be coupled to an input signal, where the input signal can be configured to switch between discrete voltage levels in an input voltage domain. A level shifting circuit output node of the level shifting circuit can be configured to provide shifted voltage levels that are shifted relative to the input signal responsive to switching of the input signal. A constant voltage element can have a first terminal that can be coupled to the level shifting circuit input node and can have a second terminal that can be coupled to the level shifting circuit output node. The constant voltage element can be configured to provide a constant voltage level shift to the input signal to provide the shifted voltage levels responsive to switching of the input signal between the discrete voltage levels in the first voltage domain.
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9.发明申请DUAL MODE POWER SUPPLY CONTROLLER WITH CHARGE BALANCE MULTIPLIERS AND CHARGE BALANCE MULTIPLIER CIRCUITS 有权带电荷平衡乘法器和充电平衡乘法器电路的双模式电源控制器公开(公告)号：US20170077833A1
公开(公告)日：2017-03-16
申请号：US15359737
申请日：2016-11-23
Applicant: Cree, Inc.
Inventor： Michael Walters , Qingcong Hu
CPC classification number: H02M7/217 , H02M1/08 , H02M3/156 , H02M2001/0009 , H02M2001/0016 , H05B33/0815 , H05B33/0848
Abstract: A circuit for generating an output current includes a control signal generating circuit that is configured to generate a control signal. The control signal is a function of a level of an analog input voltage signal, and a level of the output current is a function of a level of an analog input current signal and the level of the analog input voltage signal.
Abstract translation: 用于产生输出电流的电路包括被配置为产生控制信号的控制信号发生电路。 控制信号是模拟输入电压信号的电平的函数，输出电流的电平是模拟输入电流信号的电平和模拟输入电压信号的电平的函数。
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公开(公告)号：US20160156269A1
公开(公告)日：2016-06-02
申请号：US14558214
申请日：2014-12-02
Applicant: Cree, Inc.
Inventor： Qingcong Hu
CPC classification number: H02M3/33507 , H02M1/44 , H02M2001/0058 , H05B33/0815 , Y02B20/346 , Y02B70/1491
Abstract: Driver circuitry includes power converter circuitry, switching control circuitry, and switching frequency limiting circuitry. The power converter circuitry is configured to receive and selectively provide an input signal to one or more power conversion components via a power converter switching element to produce a regulated output signal. The switching control circuitry is coupled to the power converter switching element and configured to provide a switching control signal for controlling the power converter switching element based on a frequency limited switching trigger signal. The switching frequency limiting circuitry is coupled to the power converter circuitry and the switching control circuitry and configured to receive a switching indicator signal from the power converter circuitry and provide the frequency limited switching trigger signal based on the switching indicator signal and the switching control signal such that the frequency limited switching trigger signal limits the frequency of the switching control signal.
Abstract translation: 驱动器电路包括功率转换器电路，开关控制电路和开关频率限制电路。 功率转换器电路被配置为经由功率转换器开关元件接收并选择性地向一个或多个功率转换组件提供输入信号以产生调节的输出信号。 开关控制电路耦合到功率转换器开关元件，并且被配置为提供用于基于频率限制开关触发信号来控制功率转换器开关元件的开关控制信号。 开关频率限制电路耦合到功率转换器电路和开关控制电路，并被配置为从功率转换器电路接收切换指示符信号，并且基于切换指示符信号和切换控制信号提供频率限制切换触发信号，例如 频率限制开关触发信号限制开关控制信号的频率。
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