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1. 发明授权

US10638579B2 Power supply system 有权
公开(公告)号：US10638579B2
公开(公告)日：2020-04-28
申请号：US16342219
申请日：2017-11-03
申请人： Ellego Powertec Oy
发明人： Jari Kalervo Nurmi , Terho Otso Tapio Kaikuranta
IPC分类号： H05B45/00 , H05B37/02 , H05B45/37 , H05B47/18 , B64F1/00 , H02J7/00 , H05B47/23 , H05B45/10 , B64F1/18 , H05B47/105 , H05B47/185 , H02M7/515
CPC分类号： H05B45/37 , B64F1/002 , B64F1/18 , H02J7/0068 , H02M7/515 , H05B45/00 , H05B45/10 , H05B47/105 , H05B47/18 , H05B47/185 , H05B47/23 , Y02B20/347
摘要： The invention relates to power supply systems. There is provided an apparatus and a method for supplying electric power to an electric device. In the method an indication of a desired power level to be supplied to the electric device is obtained. Electric power is received as DC power by a constant current regulator unit, which inverts the DC power to AC power and supplies the AC power to a reactance (T1) to be transformed to an output power. The output power is supplied from the reactance (T1) to the electric device. The method further comprises adjusting the AC power supplied to the reactance (T1) by using at least two of the following:

voltage level of the AC power;
the frequency of the AC power;
a waveform of the AC power.

2. 发明申请

US20180310388A1 DRIVER CIRCUIT FOR PROVIDING CONSTANT VOLTAGE TO AN AUXILIARY CIRCUIT 审中-公开
公开(公告)号：US20180310388A1
公开(公告)日：2018-10-25
申请号：US16019933
申请日：2018-06-27
申请人： Timothy CHEN , Andrew HUSSEY , Hao WANG
发明人： Timothy CHEN , Andrew HUSSEY , Hao WANG
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B37/0272 , H05B33/0815 , H05B33/0845 , Y02B20/347
摘要： A driver circuit receiving wireless communication over a wireless network is disclosed. The driver circuit includes a lighting load, a main driver, and an auxiliary driver. The lighting load is selectively illuminated based on an output voltage being provided to the lighting load that is at least a forward voltage of the lighting load. The wireless communication is indicative of whether the lighting load is to be illuminated. The main driver is for controlling current and voltage within the driver circuit such that if the wireless communication indicates the lighting load is to be illuminated, then the current delivered to the lighting load is regulated by the main driver, and if the wireless communication indicates the lighting load is not to be illuminated, then the output voltage delivered to the lighting load is controlled by the main driver is below the forward voltage.

3. 发明申请

US20180177010A1 LED DRIVER AND DRIVING METHOD 审中-公开
公开(公告)号：US20180177010A1
公开(公告)日：2018-06-21
申请号：US15579060
申请日：2016-05-25
申请人： PHILIPS LIGHTING HOLDING B.V.
发明人： JUNHU LIU , XIANHUI ZHANG , CHUN YANG
IPC分类号： H05B33/08 , H02M3/335
CPC分类号： H05B33/0815 , H02M3/33523 , H02M2001/0006 , H02M2001/0032 , Y02B20/347 , Y02B70/16
摘要： An LED driver uses a switch mode power supply either to provide a regulated LED current (in a first mode) that connects directly to the LED arrangement or a regulated LED voltage (in a second mode) to an LED output terminal. An auxiliary power supply is either based on an auxiliary secondary side (i.e. an auxiliary secondary side winding) when in the first mode, or it is based on the regulated LED voltage when in the second mode. The LED driver further comprises an input adapted to receive a standby command for the driver, wherein the main controlling unit is adapted to control the driver in the second mode when receiving the standby command for the driver. In this way, the driver has a single shared stage which can operated in a regulated current (i.e. constant current) mode to drive the LED arrangement directly or a regulated voltage (i.e. constant voltage) mode. It can adaptively change between modes to improve the standby power efficiency. When the load is turned on (e.g. a first mode), the driver may function in constant current mode, and when the load is turned off (e.g. a second, standby mode), the driver works in constant voltage mode with the output voltage stepped down so that not sufficient to turn on the LED arrangement to be driven by the driver but enough to provide auxiliary power via the auxiliary power supply, in order to improve the auxiliary power efficiency.

4. 发明授权

US09998026B2 Techniques for assessing condition of leds and power supply 有权
公开(公告)号：US09998026B2
公开(公告)日：2018-06-12
申请号：US14373227
申请日：2013-01-21
申请人： OSRAM SYLVANIA INC. , Bernhard Siessegger , Marijan Kostrun
发明人： Bernhard Siessegger , Marijan Kostrun
IPC分类号： G01R31/44 , H02M7/06 , H05B37/02 , H05B33/08 , H01L25/16 , H05B41/39 , H01L27/15 , H01L33/62 , H01L25/075 , G01R31/26 , G01R31/40 , G01R31/02
CPC分类号： H02M7/06 , G01R31/028 , G01R31/2633 , G01R31/2635 , G01R31/40 , G01R31/44 , H01L25/0753 , H01L25/167 , H01L27/156 , H01L33/62 , H01L2224/48091 , H01L2224/48227 , H01L2224/48247 , H01L2924/12032 , H01L2924/12044 , H01L2924/1301 , H01L2924/13033 , H01L2924/1305 , H01L2924/13091 , H05B33/0803 , H05B33/0806 , H05B33/0812 , H05B33/0815 , H05B33/0821 , H05B33/0827 , H05B33/083 , H05B33/0845 , H05B33/0848 , H05B33/0851 , H05B33/086 , H05B33/0884 , H05B33/0893 , H05B37/02 , H05B37/0209 , H05B41/39 , Y02B20/343 , Y02B20/345 , Y02B20/346 , Y02B20/347 , Y10T307/615 , H01L2924/00014 , H01L2924/00
摘要： Techniques are disclosed for assessing the conditions of LEDs and power supplies of solid state lighting systems. The techniques can be used, for example, to measure the capacitance of an output capacitor C in a switch-mode power supply (SMPS), and to measure the condition of the LEDs being driven by that power supply. In some cases, this assessment can be implemented in a lighting controller that controls the lighting system, which may be configured to simultaneously determine C and the conditions of LEDs. In one example case, the techniques can be implemented, for instance, in a micro-controller operating the lighting system. A lighting system implementing the techniques can be periodically assessed so as to provide real-time diagnostic capability. Numerous example embodiments of SMPS LED lighting systems will be apparent in light of this disclosure.

5. 发明授权

US09980340B2 Linear solid-state lighting with electric arc detection and prevention free of fire hazard 有权
公开(公告)号：US09980340B2
公开(公告)日：2018-05-22
申请号：US15666495
申请日：2017-08-01
申请人： Aleddra Inc.
发明人： Chungho Hsia
IPC分类号： H05B33/08 , F21V25/12 , F21K9/278 , F21K9/275 , F21Y115/10 , F21Y103/10 , F21V23/06
CPC分类号： H05B33/0887 , F21K9/275 , F21K9/278 , F21V23/06 , F21V25/04 , F21V25/12 , F21Y2103/10 , F21Y2115/10 , H02M1/32 , H02M2001/0058 , H05B33/0803 , H05B33/0806 , H05B33/0809 , H05B33/0815 , H05B33/0845 , H05B33/0884 , Y02B20/347 , Y02B70/1491
摘要： A linear light-emitting diode (LED)-based solid-state lamp comprises an LED driving circuit, LED arrays, a rectifier configured to convert an input AC voltage into a DC voltage, and an electric arc detection and current control module. The electric arc detection and current control module comprises a first derivative circuit configured to detect voltage variations from the DC voltage provided by the rectifier. The DC voltage varies drastically when an electric arc occurs while maintaining intact when the input AC voltage is not affected by the electric arc. The first derivative circuit takes a first-derivative of the voltage variations, coupling to a comparator circuit to determine if the electric arc occurs. When the electric arc is detected, the electric arc detection and current control module shuts off a current return from the LED arrays to reach the rectifier, hence preventing the electric arc from occurring during relamping or operating.

6. 发明申请

US20180098396A1 SYSTEMS AND METHODS FOR CURRENT REGULATION IN LIGHT-EMITTING-DIODE LIGHTING SYSTEMS 审中-公开
公开(公告)号：US20180098396A1
公开(公告)日：2018-04-05
申请号：US15835251
申请日：2017-12-07
申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
发明人： Meng Li , Mingli Kang , Liqiang Zhu , Lieyi Fang
IPC分类号： H05B33/08 , H02M3/156 , H02M1/088
CPC分类号： H05B33/0815 , H02M1/088 , H02M3/156 , H05B33/0842 , Y02B20/347
摘要： Systems and methods are provided herein for current regulation. An example system controller includes: a first controller terminal configured to receive an input voltage, the first controller terminal being further configured to allow a first current flowing into the system controller based at least in part on the input voltage in response to one or more switches being closed; a second controller terminal configured to allow the first current to flow out of the system controller through the second controller terminal in response to the one or more switches being closed; a fourth controller terminal coupled to the third controller terminal through a first capacitor, the first capacitor not being any part of the system controller; and an error amplifier configured to generate a compensation signal based at least in part on the current sensing signal, the error amplifier including a second capacitor.

7. 发明授权

US09924569B2 LED driving circuit 有权
公开(公告)号：US09924569B2
公开(公告)日：2018-03-20
申请号：US15194070
申请日：2016-06-27
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Jianxin Wang , Hongbin Lai , Wei Chen
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827 , H05B33/086 , Y02B20/347
摘要： An LED driving circuit for driving an LED load including N LED strings, where N is a positive integer no less than 2, can include: (i) a power converter having a power switch; (ii) a constant current control circuit that controls a switching operation of the power switch such that the power converter generates a driving current for the LED load; (iii) N control switches respectively coupled in series to the N LED strings; (iv) a PWM signal generator configured to generate N color tuning PWM signals; and (v) a color tuning control circuit configured to output N switching control signals according to the N color tuning PWM signals, to control switching operations of the N control switches, to regulate a ratio of a current through each LED string of the LED load to the driving current, and to regulate the color temperature of the LED load.

8. 发明授权

US09894718B1 Constant current source LED driver circuit with self-clamped output 有权
公开(公告)号：US09894718B1
公开(公告)日：2018-02-13
申请号：US14556392
申请日：2014-12-01
申请人： Universal Lighting Technologies, Inc.
发明人： Wei Xiong , Rohan Dayal , Candice Ungacta
IPC分类号： H05B37/00 , H05B39/00 , H05B41/14 , H05B33/08 , H05B37/02
CPC分类号： H05B33/08 , H05B33/0809 , H05B33/0815 , H05B33/0848 , H05B33/0851 , H05B37/02 , Y02B20/346 , Y02B20/347 , Y02B20/348
摘要： A driver circuit provides current to a light source from a resonant tank having a single inductive element. The driver circuit is coupled to DC power source having a power rail and a ground, and includes a power inverter providing AC input to the tank, which further includes a DC blocking capacitor and a primary winding of the inductive element coupled in series between the output of the inverter and the ground. A leakage inductance of the inductive element provides resonant inductance for the tank. The inductive element further distributes power output from the resonant tank to a plurality of secondary windings coupled to an output rectifier. A resonant capacitor coupled across output ends of the secondary windings provides resonant capacitance for the tank. The output voltages across the secondary windings are clamped to a value based in part on a turns ratio between respective secondary windings.

9. 发明授权

US09872347B2 Systems and methods for current regulation in light-emitting-diode lighting systems 有权
公开(公告)号：US09872347B2
公开(公告)日：2018-01-16
申请号：US15041985
申请日：2016-02-11
申请人： ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
发明人： Meng Li , Mingli Kang , Liqiang Zhu , Lieyi Fang
IPC分类号： G05F1/00 , H05B37/02 , H05B39/04 , H05B41/36 , H05B33/08 , H02M1/088 , H02M3/156
CPC分类号： H05B33/0815 , H02M1/088 , H02M3/156 , H05B33/0842 , Y02B20/347
摘要： Systems and methods are provided herein for current regulation. An example system controller includes: a first controller terminal configured to receive an input voltage, the first controller terminal being further configured to allow a first current flowing into the system controller based at least in part on the input voltage in response to one or more switches being closed; a second controller terminal configured to allow the first current to flow out of the system controller through the second controller terminal in response to the one or more switches being closed; a fourth controller terminal coupled to the third controller terminal through a first capacitor, the first capacitor not being any part of the system controller; and an error amplifier configured to generate a compensation signal based at least in part on the current sensing signal, the error amplifier including a second capacitor.

10. 发明申请

US20170310160A1 LED SMART CONTROL CIRCUIT AND LED LIGHTING DEVICE CONTAINING THE SAME 审中-公开
公开(公告)号：US20170310160A1
公开(公告)日：2017-10-26
申请号：US15325600
申请日：2016-07-11
申请人： ZHEJIANG SHENGHUI LIGHTING CO., LTD
发明人： Yehua WAN , Lifeng LING , Songan YE , Jinxiang SHEN
IPC分类号： H02J9/06 , H02J7/00 , F21V3/04 , F21S9/02 , F21K9/232 , F21K9/238 , H05B33/08 , F21V29/70 , F21Y2115/10
CPC分类号： H02J9/065 , F21K9/232 , F21K9/235 , F21K9/238 , F21S9/02 , F21S9/022 , F21V3/062 , F21V23/003 , F21V29/70 , F21Y2115/10 , H02J7/0068 , H05B33/0803 , H05B33/0815 , Y02B20/347 , Y02B20/348 , Y02B20/383
摘要： A light-emitting diode (LED) smart control circuit and the related LED lighting device are provided. The LED smart control circuit includes a microprocessor, a bridge rectifier, a transformer circuit, a power grid detection unit, a voltage detection unit, a battery charging controller, a first sampling circuit, a second sampling circuit, a constant current controller, and an external rechargeable battery. The LED smart control circuit is configured for controlling LED light source components to emit light. An LED lighting device includes the LED light source components, a smart control circuit board, a rechargeable battery, a shell, and a lamp head. The smart control circuit board is integrated with the disclosed LED smart control circuit.

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