公开(公告)号：US20240276611A1

公开(公告)日：2024-08-15

申请号：US18563444

申请日：2022-05-19

申请人： SIGNIFY HOLDING B.V.

发明人： YU WANG ,  JIE FU ,  ZHIQUAN CHEN ,  GANG WANG

IPC分类号： H05B45/355 ,  H02M1/00 ,  H02M1/15 ,  H02M1/42 ,  H05B45/36 ,  H05B45/3725

CPC分类号： H05B45/355 ,  H02M1/0043 ,  H02M1/15 ,  H02M1/4225 ,  H05B45/36 ,  H05B45/3725

摘要： A driving arrangement is provided for driving a load, comprising a driver input for receiving an input power and a driver output to be coupled to the load. A high frequency switch mode PFC converter converts the input power to a PFC converter power and a high frequency switch mode regulator has an output connected in series with the output of the PFC converter. A superimposed power from the PFC converter and the regulator with synchronized high frequency switching is provided to the load. This enables a high frequency ripple to be at least partially cancelled. Wherein the charging phase of the PFC converter at least partially overlaps with the first phase of the regulator in which phase the regulated power increases.

公开(公告)号：US11997772B2

公开(公告)日：2024-05-28

申请号：US18053873

申请日：2022-11-09

申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

发明人： Liqiang Zhu ,  Qian Fang ,  Zhilin Fan ,  Ke Li

IPC分类号： H05B45/355 ,  H05B45/14

CPC分类号： H05B45/355 ,  H05B45/14

摘要： System and method for controlling a bleeder current to increase a power factor of an LED lighting system without any TRIAC dimmer. For example, the system for controlling a bleeder current to increase a power factor of an LED lighting system without any TRIAC dimmer includes: a first current controller configured to receive a rectified voltage generated by a rectifier that directly receives an AC input voltage without through any TRIAC dimmer; and a second current controller configured to: control a light emitting diode current flowing through one or more light emitting diodes that receive the rectified voltage not clipped by any TRIAC dimmer; and generate a sensing voltage based at least in part upon the light emitting diode current, the sensing voltage representing the light emitting diode current in magnitude.

公开(公告)号：US20240130016A1

公开(公告)日：2024-04-18

申请号：US18539341

申请日：2023-12-14

申请人： Jianhua Liang

发明人： Jianhua Liang

IPC分类号： H05B45/24 ,  H05B45/315 ,  H05B45/325 ,  H05B45/355

CPC分类号： H05B45/24 ,  H05B45/315 ,  H05B45/325 ,  H05B45/355

摘要： The present disclosure discloses a multifunctional dimmable driving power supply, including an alternating current (AC) input, a high-power factor correction circuit, an AC/direct current (DC) conversion circuit, a load, a phase-cut input signal, an analog input signal, a micro control unit (MCU) control module, a multishift switching device, a metal oxide semiconductor field effect transistor (MOSFET) driving circuit, a rotational potentiometer, and a temperature sensor module. The multishift switching device on the power supply is used to select different frequency outputs, switch different color temperature values, and select different curve outputs, so that the multifunctional dimmable driving power supply has high universality.

公开(公告)号：US11864281B2

公开(公告)日：2024-01-02

申请号：US17849492

申请日：2022-06-24

申请人： ERP POWER, LLC

发明人： Michael Archer ,  Louis Chen ,  James H. Mohan

IPC分类号： H05B45/14 ,  H05B45/355 ,  F21K9/238 ,  F21V19/00

CPC分类号： H05B45/14 ,  F21K9/238 ,  F21V19/003 ,  H05B45/355

摘要： An integrated multi-layered lighting system includes a first board having a first component area and a first light area, a second board coupled to and offset from the first board, the second board having a first opening overlapping the first light area of the first board in a plan view, and a second component area overlapping the first component area of the first board in a plan view, a plurality of light emitting diodes (LEDs) coupled to the first board and positioned in the first light area corresponding to the first opening of the second board, and a light driver configured to drive the plurality of LEDs and including a plurality of first components coupled to the first board and positioned in the first component area and a plurality of second components coupled to the second board and positioned in the second component area.

公开(公告)号：US11764688B2

公开(公告)日：2023-09-19

申请号：US17734544

申请日：2022-05-02

申请人： Lutron Technology Company LLC

发明人： Dragan Veskovic

IPC分类号： H05B45/10 ,  H02M3/335 ,  H05B45/00 ,  H05B45/382 ,  H05B45/385 ,  H05B45/39 ,  H05B45/37 ,  H05B44/00 ,  H05B45/30 ,  H02M1/08 ,  H05B45/355 ,  H05B45/3725 ,  H05B45/38 ,  H02M1/00

CPC分类号： H02M3/33538 ,  H02M1/08 ,  H02M3/33546 ,  H02M3/33553 ,  H05B44/00 ,  H05B45/00 ,  H05B45/10 ,  H05B45/30 ,  H05B45/37 ,  H05B45/382 ,  H05B45/385 ,  H05B45/39 ,  H02M1/0009 ,  H05B45/355 ,  H05B45/3725 ,  H05B45/38 ,  Y02B20/30

摘要： A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) includes first and second semiconductor switches, a transformer, a capacitor, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducted through a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The capacitor is electrically coupled between the junction of the first and second semiconductor switches and the primary winding. The current sense circuit receives a sense voltage and averages the sense voltage when the first semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.

公开(公告)号：US20240163991A1

公开(公告)日：2024-05-16

申请号：US17985917

申请日：2022-11-14

申请人： INVENT10 LIMITED

发明人： Kam Wah SIU

IPC分类号： H05B45/355 ,  H02M1/14 ,  H02M1/42 ,  H02M7/06

CPC分类号： H05B45/355 ,  H02M1/14 ,  H02M1/42 ,  H02M7/06

摘要： Embodiments of the invention overcome prior approaches by creating a single-stage, high-power LED driver topology. In one aspect, the topology may be used and suitable for driving horticultural LED lights.

公开(公告)号：US11963272B2

公开(公告)日：2024-04-16

申请号：US18133940

申请日：2023-04-12

申请人： Mate. LLC

发明人： Jason Neudorf ,  Steven Lyons ,  Kyle Hathaway

IPC分类号： H05B45/355 ,  H05B45/10 ,  H05B45/14 ,  H05B45/20 ,  H05B45/37 ,  H05B45/50 ,  H05B47/175 ,  H05B47/19 ,  H05B47/21

CPC分类号： H05B45/10 ,  H05B45/14 ,  H05B45/20 ,  H05B45/355 ,  H05B45/37 ,  H05B45/50 ,  H05B47/175 ,  H05B47/22

摘要： A lighting system including monitoring of input power and output power parameters to a set of lighting loads to detect power faults and/or anomalies. The set of sensing circuits include primary side and secondary side sensing circuits that communicate with a set of monitoring circuits to process the information supplied by the sensing circuits. If a fault and/or anomaly is sensed or detected, a signal is transmitted to provide an alert.

公开(公告)号：US20230397312A1

公开(公告)日：2023-12-07

申请号：US18200594

申请日：2023-05-23

申请人： Traxon Technologies Ltd.

发明人： Joe GASIEWICZ ,  John DAVIS

IPC分类号： H05B45/35 ,  H05B45/355 ,  H05B45/18 ,  H05B45/14 ,  H05B47/17

CPC分类号： H05B45/35 ,  H05B45/355 ,  H05B45/18 ,  H05B45/14 ,  H05B47/17

摘要： The invention concerns a lighting arrangement having at least two light strings, each light string comprising at least one optoelectronic component configured for a power consumption in operation of more than 8 W. A couple of adjustable current sources are connected to a respective one of the at least two light strings and configured to provide an adjustable supply current to respective one of the at least two light strings. The arrangement further comprises an AC/DC converter utilizing GaN based FET technology configured to provide a DC supply voltage to the at least two adjustable current sources and the respective light strings connected thereto. Finally, a control circuit is coupled to the at least two adjustable current sources and configured to individually adjust a duty cycle for each of the at least two adjustable current sources and the supply current provided by the at least two adjustable current sources.

公开(公告)号：US20230396172A1

公开(公告)日：2023-12-07

申请号：US18449159

申请日：2023-08-14

申请人： Lutron Technology Company LLC

发明人： Dragan Veskovic

IPC分类号： H02M3/335 ,  H05B45/10 ,  H05B45/00 ,  H05B45/382 ,  H05B45/385 ,  H05B45/39 ,  H05B45/37 ,  H05B44/00 ,  H05B45/30 ,  H02M1/08

CPC分类号： H02M3/33538 ,  H02M3/33546 ,  H05B45/10 ,  H05B45/00 ,  H05B45/382 ,  H05B45/385 ,  H05B45/39 ,  H05B45/37 ,  H05B44/00 ,  H05B45/30 ,  H02M3/33553 ,  H02M1/08 ,  Y02B20/30 ,  H05B45/355

摘要： A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) includes first and second semiconductor switches, a transformer, a capacitor, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducted through a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The capacitor is electrically coupled between the junction of the first and second semiconductor switches and the primary winding. The current sense circuit receives a sense voltage and averages the sense voltage when the first semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.

公开(公告)号：US20230328859A1

公开(公告)日：2023-10-12

申请号：US18206636

申请日：2023-06-07

申请人： HYASIC INCORPORATION

发明人： Xi Tu ,  Chengdong Zhang ,  Junjie Zheng

IPC分类号： H05B45/355 ,  H05B45/325 ,  H05B45/48

CPC分类号： H05B45/355 ,  H05B45/325 ,  H05B45/48

摘要： An intelligent adjustment method and system for an LED backlight drive, a device and a storage medium are disclosed. The method includes: acquiring optimized channel current on each of other LED substring branches other than a non-maximum conduction branch; calculating, according to the optimized channel current, the number of cycles of conducting PWM of each LED substring branch in one frame of a frame synchronizing signal as the number of cycles of the optimized conducting PWM; and adjusting a channel current of each LED substring branch to be a corresponding optimized channel current, and adjusting the number of cycles of a conducting PWM of each LED substring branch to be the number of cycles of the optimized conducting PWM.