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1. 发明授权

US11588403B2 Buck-boost converting circuit 有权
公开(公告)号：US11588403B2
公开(公告)日：2023-02-21
申请号：US17128532
申请日：2020-12-21
申请人： Silicon Works Co., Ltd.
发明人： Seung Jin Kim , Jae Seong Lee , Jung Sik Kim , Jeongjin Roh , Ju Pyo Hong , Ju Hyun Lee
IPC分类号： H05B45/37 , H05B45/375 , H05B45/38 , H02M3/158 , H05B45/54 , H05B45/325
摘要： Provided is a buck-boost converting circuit including an LED current regulator and bypass switches. The buck-boost converting circuit includes switches coupled in a matrix form in order to individually control a plurality of LEDs connected in series, an LED current regulator, and a circuit capable of buck-boost conversion.

2. 发明授权

US11581802B2 Power factor correction circuit 有权
公开(公告)号：US11581802B2
公开(公告)日：2023-02-14
申请号：US17638306
申请日：2020-10-05
申请人： Tridonic GmbH & Co KG
发明人： Hans Auer , Patrick Marte
IPC分类号： H05B45/37 , H02M1/42 , H05B45/355 , H02M1/00
摘要： The invention relates to a power factor correction (PFC) circuit (20), comprising an inductor (21) which is configured to provide a discharge current, a capacitor (23) which is connected to the inductor (21) via a switch (24) and which can be charged with said discharge current, a control unit (14) which is configured to alternately switch the switch (24) on and off based on a feedback control, wherein the control unit (14) has an input interface (42) for receiving a feedback signal (ZXCS) which represents a discharge voltage of the inductor (21), wherein the control unit (14), in a DCM mode, is further configured to calculate a switch on time (Ton) of the switch (24) which is after a first local minimum of the discharge voltage, and wherein, after switching off the switch (24), the control unit is configured to: either switch on the switch (24) at a next or closest local minimum of the inductor voltage after Ton, in case Ton is less than a directly or indirectly set reference time (Tref), or close the switch (24) at Ton, in case Ton is equal to or exceeds Tref.

3. 发明授权

US11546977B2 Driver for LED and LED system 有权
公开(公告)号：US11546977B2
公开(公告)日：2023-01-03
申请号：US17045305
申请日：2019-04-03
申请人： CONSUMER LIGHTING (U.S.), LLC
发明人： Dong Xing , Fanbin Wang , Xin Zhou , Can Feng , Langyu Xie
IPC分类号： H05B45/37 , H05B45/00 , H05B45/385
摘要： A driver for a Light Emitting Diode (LED) comprises a main circuit of a Ringing Choke Converter (RCC), a driving circuit of the RCC, and a first adjustment module. The main circuit of the RCC comprises: an energy input terminal, an energy output terminal, and a control terminal. The energy input terminal is configured to receive an input voltage. The energy output terminal is coupled to the LED and configured to provide an output current to the LED. The control terminal is configured to receive a driving signal. The driving circuit comprises a driving signal output terminal coupled to the control terminal, and is configured to provide the driving signal to the main circuit via the driving signal output terminal. The first adjustment module is coupled between the energy input terminal and the driving signal output terminal, and is configured to adjust the driving signal according to the input voltage.

4. 发明授权

US11543086B2 LED tube lamp 有权
公开(公告)号：US11543086B2
公开(公告)日：2023-01-03
申请号：US17338485
申请日：2021-06-03
申请人： JIAXING SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD
发明人： Aiming Xiong , Xintong Liu , Junren Chen , Hechen Hu , Hao Zhang
IPC分类号： F21K9/278 , F21V23/00 , H05B45/10 , H05B45/20 , H05B45/37 , F21V29/70 , F21K9/272 , F21K9/275 , F21V3/06 , H05B45/00 , H05B45/50 , F21V15/015 , F21V23/02 , F21V25/02 , F21V25/04 , H05K1/00 , F21V29/83 , F21Y103/10 , F21Y115/10 , H05K1/14
摘要： A circuit board configuration adapted to carry electronic components of a power supply module is provided. The circuit board configuration comprises: a first circuit board, having a first plane configured to dispose and connect a part of the electronic components; and a second circuit board, electrically connected to the first circuit board and having a second plane configured to dispose and connect another part of the electronic components, wherein at least one of the first and the second circuit boards is disposed, perpendicular to an axial direction of the lamp tube, in an interior space formed by the lamp tube and at least one of the two end caps, so that the a direction normal to the first and the second planes is substantially parallel to the axial direction of the lamp tube.

5. 发明授权

US11528788B1 Light-emitting diode lighting device which improves line regulation 有权
公开(公告)号：US11528788B1
公开(公告)日：2022-12-13
申请号：US17380042
申请日：2021-07-20
申请人： Chiplight Technology (Shenzhen) Co., Ltd.
发明人： Horng-Bin Hsu , Yi-Mei Li , Pen-Li Chou
IPC分类号： H05B45/345 , H05B45/37
摘要： An LED lighting device includes a luminescent device driven by a rectified AC voltage, a current detecting circuit, a current regulating circuit, and a duty cycle detecting circuit. The current regulating circuit is configured to provide a regulating current so that the current flowing through the luminescent device does not exceed the regulating current. The current detecting circuit is configured to monitor the value of the regulating current, and the duty cycle detecting circuit is configured to monitor the duty cycle of the regulating current. The present invention can improve the overall line regulation of the LED lighting device when the rectified AC voltage somehow fluctuates between its upper bound and lower bound.

6. 发明申请

US20220394833A1 Eliminating Flicker and Open Load Protection for Driver Compatible with NAFTA Dim ECG 有权
公开(公告)号：US20220394833A1
公开(公告)日：2022-12-08
申请号：US17887784
申请日：2022-08-15
申请人： LEDVANCE GmbH
发明人： Zhifeng LI , Hui YE
IPC分类号： H05B45/50 , H05B45/3578 , H05B45/00 , H05B45/37
摘要： An electronic driver for transforming an electronic ballast input voltage into an operating voltage for an LED lighting module. The driver includes a flicker eliminating circuit, which is adapted to operate in a saturation mode when the input voltage is below a threshold voltage. It operates in a switch mode when the input voltage is above a threshold voltage. A voltage drop in the flicker eliminating circuit in the saturation mode is higher than in the switch mode.

7. 发明授权

US11519567B2 LED tube lamp 有权
公开(公告)号：US11519567B2
公开(公告)日：2022-12-06
申请号：US17397076
申请日：2021-08-09
申请人： JIAXING SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD
发明人： Tao Jiang , Aiming Xiong
IPC分类号： F21K9/278 , F21K9/23 , F21K9/235 , F21K9/272 , F21V15/015 , F21V17/10 , F21V23/02 , F21V29/83 , F21V3/06 , F21V3/10 , H05B45/37 , H05B45/50 , F21K9/27 , F21V7/28 , F21V7/22 , F21V23/00 , B23K3/047 , B23K1/00 , H05B6/10 , F21K9/275 , F21V25/02 , B23K101/42 , F21Y101/00 , F21Y115/10 , F21Y103/00 , F21Y103/10 , F21V25/04 , F21V29/70 , F21K9/68 , C03C21/00 , C03C27/04
摘要： An LED tube lamp comprises a glass lamp tube having a main body, two end caps coupled to a respective end of the tube, an LED light strip adhered to inner circumferential surface of the tube by first adhesive, a plurality of LED light sources mounted on a mounting region, a power supply module having a circuit board and a plurality of electronic components mounted on the circuit board, a diffusion layer covering on outer surface or inner surface of the tube, and a protective layer being disposed on surface of the strip and having a plurality of first openings for disposing the plurality of LED light sources. The strip comprises the mounting region and connecting region at an end of the strip. The circuit board is substantially parallel with axial direction of the tube, electrically connects to the connecting region, and stacks with a portion of the connecting region.

8. 发明申请

US20220369439A1 DRIVER FOR LED DEVICE, LED SYSTEM, AND ADAPTATION METHOD FOR LED DEVICE 有权
公开(公告)号：US20220369439A1
公开(公告)日：2022-11-17
申请号：US17761258
申请日：2019-09-17
申请人： CURRENT LIGHTING SOLUTIONS, LLC
发明人： Qiang Zou , Zhichao Liu , Qi Yan
IPC分类号： H05B45/37 , H05B45/345 , H05B45/305
摘要： A driver for a light-emitting diode (LED) device comprises: a rectifier, a current regulator and a detecting module. The rectifier is coupled to a ballast and configured to convert an alternating current from the ballast into a direct current. The current regulator is coupled between the rectifier and the LED device, and configured to receive the direct current from the rectifier and output a driving current to the LED device. The detecting module is configured to detect a signal indicating an output characteristic of the ballast, during a startup stage of the LED device. The current regulator is configured to convert the direct current from the rectifier into the driving current with a value equal to or less than a preset current threshold when the signal meets a preset condition, and the preset current threshold is less than a maximum current the LED device is able to carry without damage.

9. 发明授权

US11503680B2 Systems and methods for operating a light system 有权
公开(公告)号：US11503680B2
公开(公告)日：2022-11-15
申请号：US17095365
申请日：2020-11-11
申请人： The Boeing Company
发明人： Melanie L. Kimsey-Lin
IPC分类号： A61L2/10 , H05B45/00 , A61L2/24 , H05B45/37 , B82Y10/00 , G03F7/20 , H01J61/80 , H05B41/32 , H05G2/00 , H05H1/04 , H05B41/36 , H05B45/10 , H05B45/325 , H05B45/355
摘要： In an example, a method of operating an ultraviolet (UV) light source includes providing a supply power to the UV light source, and activating, using the supply power, the UV light source to emit UV light during a series of activation cycles. The method also includes, during at least one activation cycle in the series, sensing the UV light emitted by the UV light source to measure an optical parameter of the UV light. The optical parameter is related to an antimicrobial efficacy of the UV light. The method further includes adjusting, based on the measured optical parameter, an electrical parameter of the supply power to maintain a target antimicrobial efficacy of the UV light over the series of activation cycles.

10. 发明申请

US20220361302A1 FLICKER MEASUREMENT METHOD AND FLICKER MEASUREMENT SYSTEM 有权
公开(公告)号：US20220361302A1
公开(公告)日：2022-11-10
申请号：US17316284
申请日：2021-05-10
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Marcus Sonst
IPC分类号： H05B45/14 , H05B45/37
摘要： A flicker measurement method is described. The flicker measurement method includes: providing an electrical measurement device, wherein the electrical measurement device includes at least one signal input; providing an LED driver, wherein the LED driver is configured to generate a power signal; electrically connecting the LED driver with the at least one signal input; generating a power signal by the LED driver; and determining a flicker metric based on the power signal by the electrical measurement device. Further, a flicker measurement system is described.

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