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11.发明申请公开(公告)号：US20140218987A1
公开(公告)日：2014-08-07
申请号：US13761601
申请日：2013-02-07
Applicant: CREE, INC.
Inventor： Yuequan Hu , Qingcong Hu
CPC classification number: H01F27/323 , H02M1/4225 , Y02B70/126
Abstract: A power supply circuit includes an input configured to receive an input voltage, an output configured to supply an output voltage, at least one inductor, at least one diode, and at least one switch. The inductor may have a parasitic capacitance less than about 100 pF. Related inductors are also disclosed.
Abstract translation: 电源电路包括被配置为接收输入电压的输入，被配置为提供输出电压的输出，至少一个电感器，至少一个二极管和至少一个开关。 电感器可具有小于约100pF的寄生电容。 还公开了相关电感器。
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公开(公告)号：US10508797B2
公开(公告)日：2019-12-17
申请号：US15386700
申请日：2016-12-21
Applicant: Cree, Inc.
Inventor： Donald Walker , Qingcong Hu , Boris Karpichev , Andrew Bendtsen , Kurt Wilcox
IPC: F21V21/005 , F21V8/00 , F21V23/06 , F21V23/00 , F21S8/06 , F21V15/015 , F21V23/04 , F21Y103/10 , F21Y115/10 , F21S2/00
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：US10141740B2
公开(公告)日：2018-11-27
申请号：US15189610
申请日：2016-06-22
Applicant: Cree, Inc.
Inventor： Qingcong Hu
Abstract: A power converter may be configured to power multiple output loads, including a main output load and at least one auxiliary output load. The power converter may include control circuitry that controls power delivery to output circuits coupled to the output loads. When the main output load is operating in a reduced power mode, the control circuitry may trigger the switching circuitry to increase the supply of power in order to increase the auxiliary voltages used to power the auxiliary loads if one or more of the auxiliary voltages drops below a threshold due to the main output load operating in the reduced power mode.
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14.发明授权公开(公告)号：US09998027B2
公开(公告)日：2018-06-12
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.
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公开(公告)号：US20170373496A1
公开(公告)日：2017-12-28
申请号：US15189610
申请日：2016-06-22
Applicant: Cree, Inc.
Inventor： Qingcong Hu
CPC classification number: H02J1/00 , H02M3/33561 , H02M2001/008
Abstract: A power converter may be configured to power multiple output loads, including a main output load and at least one auxiliary output load. The power converter may include control circuitry that controls power delivery to output circuits coupled to the output loads. When the main output load is operating in a reduced power mode, the control circuitry may trigger the switching circuitry to increase the supply of power in order to increase the auxiliary voltages used to power the auxiliary loads if one or more of the auxiliary voltages drops below a threshold due to the main output load operating in the reduced power mode.
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Patent Agency Ranking
16.发明授权公开(公告)号：US09730289B1
公开(公告)日：2017-08-08
申请号：US15018375
申请日：2016-02-08
Applicant: Cree, Inc.
Inventor： Yuequan Hu , Qingcong Hu
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：US09654010B2
公开(公告)日：2017-05-16
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.
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公开(公告)号：US09791110B2
公开(公告)日：2017-10-17
申请号：US14291829
申请日：2014-05-30
Applicant: Cree, Inc.
Inventor： Yuequan Hu , Daniel Pope , Qingcong Hu
IPC: F21K99/00 , F21V29/503 , F21V23/00 , F21V23/06 , F21V7/00 , F21V3/00 , H01R43/00 , H05B33/08 , F21V17/02 , F21K9/23 , F21W131/10 , F21S8/08 , F21V14/04 , F21V29/77 , F21Y101/00 , F21Y115/10 , F21Y107/30
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 high efficiency driver circuit with fast response is disclosed. Embodiments of the present invention relate to an LED driver that can drive a plural number of LED strings. The driver according to example embodiments includes a voltage converter stage with a feedback loop. The driver can include a speed-up circuit, and/or an adaptive output voltage control circuit, also referred to herein as an overhead control circuit. In at least some embodiments, an input inductor helps to attenuate input current ripple, which could otherwise lead to low high-frequency winding loss in other inductors. The speed-up circuit can provide current regulation of the LED strings and prevent flickering of the LEDs. The overhead control circuit can adjust the output voltage of the driver to an optimum value to improve operating efficiency.
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19.发明申请VOLTAGE LEVEL SHIFTING CIRCUITS FOR SIGNAL LEVELS AND/OR POWER SUPPLY VOLTAGE LEVELS USING CONSTANT VOLTAGE CIRCUIT ELEMENTS, LIGHTING APPARATUSES AND METHODS OF OPERATING THE SAME 有权使用恒定电压电路元件的信号电平和/或电源电压电平的电压水平移动电路，照明装置及其操作方法公开(公告)号：US20160322972A1
公开(公告)日：2016-11-03
申请号：US14701025
申请日：2015-04-30
Applicant: Cree, Inc.
Inventor： Qingcong Hu , Daniel Pope
IPC: H03K19/0185 , H05B33/08
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.
Abstract translation: 电平移位电路可以包括能够耦合到输入信号的电平移位电路输入节点，其中输入信号可被配置为在输入电压域中的离散电压电平之间切换。 电平移位电路的电平移动电路输出节点可以被配置为响应于输入信号的切换而提供相对于输入信号偏移的移位电压电平。 恒定电压元件可以具有可耦合到电平移位电路输入节点的第一端子，并且可以具有可耦合到电平移位电路输出节点的第二端子。 恒定电压元件可以被配置为向输入信号提供恒定的电压电平移位，以响应于第一电压域中的离散电压电平之间的输入信号的切换来提供移位的电压电平。
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20.发明授权公开(公告)号：US09330833B2
公开(公告)日：2016-05-03
申请号：US13761601
申请日：2013-02-07
Applicant: Cree, Inc.
Inventor： Yuequan Hu , Qingcong Hu
CPC classification number: H01F27/323 , H02M1/4225 , Y02B70/126
Abstract: A power supply circuit includes an input configured to receive an input voltage, an output configured to supply an output voltage, at least one inductor, at least one diode, and at least one switch. The inductor may have a parasitic capacitance less than about 100 pF. Related inductors are also disclosed.
Abstract translation: 电源电路包括被配置为接收输入电压的输入，被配置为提供输出电压的输出，至少一个电感器，至少一个二极管和至少一个开关。 电感器可具有小于约100pF的寄生电容。 还公开了相关电感器。
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