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1. 发明授权

US10721799B2 LED driving device, constant-power dimming circuit and dimming method thereof 有权
公开(公告)号：US10721799B2
公开(公告)日：2020-07-21
申请号：US16615129
申请日：2018-05-09
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO., LTD
发明人： Xiaoyu Chen , Xunsheng Deng , Bo Chen , Yanquan Mai
IPC分类号： H05B45/10 , H05B45/3725 , H05B45/40 , H05B45/345 , H05B45/325
摘要： An LED driving device and a constant power dimming circuit and dimming method therefor. The constant power dimming circuit comprises a line voltage compensation module, a modulation module, a filtering module, and a constant current source module. The line voltage compensation module detects changes in line voltage and outputs a first reference voltage. The modulation module modulates the first reference voltage and outputs to the filtering module a second reference voltage. The filtering module filters the second reference voltage signal and then outputs a third reference voltage to the constant current source module. The constant current source module outputs constant current to drive an LED load to operate. By controlling a constant current source circuit, when the duty cycle of the PWM signal is not changed but a mains input voltage is changed, the input power of the system can be maintained constant, and voltage flicker is reduced.

2. 发明授权

US11019694B2 Apparatus and method for simultaneously adjusting brightness and color temperature, and LED lamp 有权
公开(公告)号：US11019694B2
公开(公告)日：2021-05-25
申请号：US16644628
申请日：2018-05-25
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO., LTD
发明人： Yanquan Mai , Xunsheng Deng , Bo Chen , Xiaoyu Chen , Wenpan Wang
IPC分类号： H05B45/10 , H05B45/31 , H05B45/20
摘要： An apparatus and method for simultaneously adjusting brightness and color temperature, and an LED lamp. The apparatus includes a phase control dimmer, a rectification module, a phase detection module, a current control module and an LED module. Cutting the phase of an input alternating current by the phase control dimmer changes the effective voltage of the alternating current, then the cut alternating current is rectified by the rectification module and output to the LED module, thus adjusting the brightness of the LED module; information about the cut phase is detected by the phase detection module and a current control signal is output to a current control module according to the cut phase information, and the current control module controls change in the brightness ratio of mixed colors of the LED module according to the current control signal and adjusts the color temperature of the LED module.

3. 发明申请

US20160037592A1 DRIVING DEVICE FOR LED AND THE DRIVING METHOD THEREOF 审中-公开
标题翻译： LED驱动装置及其驱动方法
公开(公告)号：US20160037592A1
公开(公告)日：2016-02-04
申请号：US14666368
申请日：2013-07-08
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO.,LTD
发明人： Xiaoyu Chen , Bo Chen , Xunsheng Deng , Jing Zhang , Yanquan Mai
IPC分类号： H05B33/08
CPC分类号： H05B33/083 , H05B33/0809 , H05B33/0824 , H05B33/0887 , Y02B20/348
摘要： The present invention discloses a driving device for LED and the driving method thereof, includes: a bridge rectifier, at least one LED-lamp bunch and LED-lamp group and P-type switching module and N-type driving module, and a logic controller; the LED-lamp bunch and group are connected orderly in series; the bridge rectifier's positive end connects to the LED-lamp bunch's anode, while a negative end gets grounded; the logic controller connects to the anode and cathode of LED-lamp bunch through the P-type switching module respectively, the cathode of LED-lamp group through N-type driving module, and the negative input end of the bridge rectifier; by controlling the N-type driving module and P-type switching module makes the number of lit-on LED-lamps change following the rectified input signal voltage changes; thus its efficiency is improved and easy to be integrated into chips.
摘要翻译：本发明公开了一种LED驱动装置及其驱动方法，包括：桥式整流器，至少一个LED灯串和LED灯组以及P型开关模块和N型驱动模块，以及逻辑控制器 ; LED灯串和串联有序连接; 桥式整流器的正端连接到LED灯串的阳极，而负端接地; 逻辑控制器分别通过P型开关模块连接到LED灯串的阳极和阴极，LED灯组的阴极通过N型驱动模块和桥式整流器的负输入端连接; 通过控制N型驱动模块和P型开关模块，随着整流的输入信号电压变化，点亮的LED灯的数量发生变化; 因此其效率提高并且易于被集成到芯片中。

4. 发明授权

US11297706B2 Detection circuit and device of TRIAC dimmer and detection method 有权
公开(公告)号：US11297706B2
公开(公告)日：2022-04-05
申请号：US17378445
申请日：2021-07-16
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO., LTD
发明人： Yu'An Ye , Xunsheng Deng , Wenpan Wang
IPC分类号： H05B45/50 , H05B45/3575 , H05B45/14 , F21S4/24 , F21Y115/10
摘要： Disclosed are detection circuit and device of TRIAC dimmer and detection method. Detection circuit comprises line voltage sampling module, peak voltage sampling module, average voltage sampling module, judgment module, bleeder module, line voltage sampling module samples line voltage, outputs sampling voltage to peak voltage sampling module and average voltage sampling module; peak voltage sampling module outputs first comparison voltage to judgment module according to sampling voltage, average voltage sampling module outputs second comparison voltage to judgment module according to sampling voltage; judgment module compares first comparison voltage with second comparison voltage and outputs control signal according to comparison result to control connection or disconnection of bleeder module; bleeder module provides discharge current for TRIAC dimmer when being connected. According to invention, problem that detection result of TRIAC dimmer is unreliable can be effectively solved, and detection accuracy is improved.

5. 发明授权

US11082936B2 Device time synchronization control method and system in wireless mesh network 有权
公开(公告)号：US11082936B2
公开(公告)日：2021-08-03
申请号：US16621592
申请日：2018-05-09
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO., LTD
发明人： Wenpan Wang , Yanquan Mai , Xunsheng Deng , Bo Chen
IPC分类号： H04W4/00 , H04W56/00 , H04L7/00 , H04W84/18
摘要： Device time synchronization control method in wireless mesh network, comprising: pulse converter converts input AC into periodic pulse signal; controller sends time setting instruction to adjacent node device at preset time; adjacent node device updates device time according to preset algorithm when periodic signal is on rising edge or falling edge, take updated device time as setting time and forward to other adjacent node devices before arrival of next rising edge or falling edge; other adjacent devices update own device time when periodic signal is on rising edge or falling edge; after all node devices finish updating device time, controller sends control commands, and all node devices execute synchronously upon arrival of execution time. Node devices update own time according to pulse signal changes, realizing clock synchronization and synchronization control over node devices by uniform execution time.

6. 发明授权

US10660173B2 System and method using switch to realize light fixture dimming and state restoration 有权
公开(公告)号：US10660173B2
公开(公告)日：2020-05-19
申请号：US16616366
申请日：2018-05-09
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO., LTD
发明人： Yanquan Mai , Xunsheng Deng , Bo Chen , Xiaoyu Chen
IPC分类号： H05B45/00 , H05B45/10 , H05B45/37 , H05B47/16
摘要： A system and method using a switch to realize light fixture dimming and state restoration. The system comprises a switch, a line voltage sampling module, a switching action judging module and a dimming control module. The switch connects to at least one light fixture. The line voltage sampling module samples a rectified line voltage output and outputs a corresponding voltage level signal. The switching action judging module identifies and determines a current switching action and outputs a corresponding control instruction to the dimming control module. The dimming control module regulates the lighting state of each light fixture or controls each light fixture to return to its initial lighting state. By identifying and judging switching actions to realize light fixture dimming and state restoration control, the invention can realize a regular dimming function, and can quickly restore the light to a preset initial lighting state.

7. 发明授权

US10292236B2 Linear constant current LED drive device capable of driving reduced number of LEDs 有权
公开(公告)号：US10292236B2
公开(公告)日：2019-05-14
申请号：US15571204
申请日：2016-04-07
申请人： Shenzhen Sendis Semiconductor Co., LTD
发明人： Xiaoyu Chen , Bo Chen , Xunsheng Deng , Yanquan Mai
IPC分类号： H05B37/02 , H05B33/08
摘要： A linear constant current LED drive device capable of driving reduced number of LEDs, comprises: a rectifier module, an energy storage component, a switch module, a constant current supply module, a measurement module and a control module. When voltage differences between two ends of both switch module and constant current supply module are less than according threshold voltages, control module turns on switch module, enabling rectifier module to charge energy storage component and LED string lights. When voltage difference between two ends of either switch module or constant current supply module exceeds according threshold voltage, control module turns off switch module, enabling energy storage component to charge LED string lights. So rectifier module and energy storage component supply electricity to plurality of LED string lights alternately, number of LEDs can be reduced, while maintaining high drive efficiency.

8. 发明授权

US11076465B2 Multi-segment linear LED drive circuit, device and driving method 有权
公开(公告)号：US11076465B2
公开(公告)日：2021-07-27
申请号：US17077137
申请日：2020-10-22
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO., LTD
发明人： Yanquan Mai , Bo Chen , Xunsheng Deng
IPC分类号： H05B45/36 , H05B45/44
摘要： A multi-segment linear LED drive circuit, device and method. A Multi-segment linear LED drive circuit includes a reference voltage input module, current source module, voltage control module, current regulation module, at least two LED light strings connected in series and at least two driving modules correspondingly. The reference voltage input module provides reference voltage for each of driving module; the current source module provides DC current for voltage control module; the voltage control module controls input voltage of driving module according to DC current; the driving module lights corresponding LED light string on or off according to reference voltage, input voltage and line voltage constant current; the current adjusting module adjusts constant current; constant current of rear driving module is greater than that of front driving module, and when current passes through rear driving module, front driving module stops driving, harmonic influence and circuit implementation cost are reduced.

9. 发明授权

US09591708B2 LED driving device for dynamic segment configurations and the LED lighting apparatus thereof 有权
标题翻译：用于动态段配置的LED驱动装置及其LED照明装置
公开(公告)号：US09591708B2
公开(公告)日：2017-03-07
申请号：US14895999
申请日：2014-07-01
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO.,LTD
发明人： Xiaoyu Chen , Bo Chen , Xunsheng Deng , Yanquan Mai
IPC分类号： H05B33/08
CPC分类号： H05B33/0827 , H05B33/0809 , H05B33/0824 , H05B33/083 , Y02B20/348
摘要： The invention discloses an LED driving device for dynamic segment configurations and the LED lighting apparatus thereof, wherein, the said LED driving device includes a first adjustable LED lamp string unit, a first N-type switch module, at least one second adjustable LED lamp string unit, one unidirectional conduction unit, one P-type switch module, one second N-type switch module, control logic module and current detection module; the control logic module outputs control signals, based on output voltage changes from the bridge rectifier, to control the on and off states of the first adjustable LED lamp string unit, the adjustable LED lamp string module, the P-type switch module, the first and second N-type switch module, also it adjusts the parallel and serial connection states of the first and second adjustable LED lamp string units dynamically. The invention adopts the dynamically configuring technology, improving the lighting effects and the utilization of LED lamps.
摘要翻译：本发明公开了一种用于动态段配置的LED驱动装置及其LED照明装置，其中所述LED驱动装置包括第一可调LED灯串单元，第一N型开关模块，至少一个第二可调LED灯串单元，单向导通单元，一个P型开关模块，一个N型开关模块，控制逻辑模块和电流检测模块; 控制逻辑模块基于来自桥式整流器的输出电压变化输出控制信号，以控制第一可调LED灯串单元，可调节LED灯串模块，P型开关模块，第一可调LED灯串组件的开和关状态和第二N型开关模块，还动态调整第一和第二可调LED灯串单元的并联和串联连接状态。本发明采用动态配置技术，提高LED灯具的照明效果和利用率。

10. 发明授权

US09426859B2 Driving device for LED and the driving method thereof 有权
标题翻译： LED驱动装置及其驱动方法
公开(公告)号：US09426859B2
公开(公告)日：2016-08-23
申请号：US14666368
申请日：2013-07-08
申请人： SHENZHEN SENDIS SEMICONDUCTOR CO.,LTD
发明人： Xiaoyu Chen , Bo Chen , Xunsheng Deng , Jing Zhang , Yanquan Mai
IPC分类号： H05B33/08
CPC分类号： H05B33/083 , H05B33/0809 , H05B33/0824 , H05B33/0887 , Y02B20/348
摘要： The present invention discloses a driving device for LED and the driving method thereof, includes: a bridge rectifier, at least one LED-lamp bunch and LED-lamp group and P-type switching module and N-type driving module, and a logic controller; the LED-lamp bunch and group are connected orderly in series; the bridge rectifier's positive end connects to the LED-lamp bunch's anode, while a negative end gets grounded; the logic controller connects to the anode and cathode of LED-lamp bunch through the P-type switching module respectively, the cathode of LED-lamp group through N-type driving module, and the negative input end of the bridge rectifier; by controlling the N-type driving module and P-type switching module makes the number of lit-on LED-lamps change following the rectified input signal voltage changes; thus its efficiency is improved and easy to be integrated into chips.
摘要翻译：本发明公开了一种LED驱动装置及其驱动方法，包括：桥式整流器，至少一个LED灯串和LED灯组以及P型开关模块和N型驱动模块，以及逻辑控制器 ; LED灯串和串联有序连接; 桥式整流器的正端连接到LED灯串的阳极，而负端接地; 逻辑控制器分别通过P型开关模块连接到LED灯串的阳极和阴极，LED灯组的阴极通过N型驱动模块和桥式整流器的负输入端连接; 通过控制N型驱动模块和P型开关模块，随着整流的输入信号电压变化，点亮的LED灯的数量发生变化; 因此其效率提高并且易于被集成到芯片中。

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