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1. 发明授权

US09161400B2 Method and apparatus for cancelling output current ripples in LED driving circuits 有权
标题翻译：消除LED驱动电路中输出电流波纹的方法和装置
公开(公告)号：US09161400B2
公开(公告)日：2015-10-13
申请号：US14037909
申请日：2013-09-26
申请人： Huizhou Light Engine Limited
发明人： Kam Wah Siu , Wa Hing Leung , Siu Hong Wong , Bo Tian
IPC分类号： H05B33/08 , H05B37/02
CPC分类号： H05B33/0815 , H05B33/0812 , Y02B20/345 , Y02B20/347
摘要： A device and method for reducing current ripple to a light emitting diode array having a single stage power factor correction driver with an output voltage ripple that is reduced by using a linear current regulator connected in series between the single stage power factor correction driver and the light emitting diode array, which actively adjusts an equivalent impedance of the linear current regulator in correspondence with the output voltage ripple of the single stage power factor correction driver.
摘要翻译：一种用于减小具有单级功率因数校正驱动器的发光二极管阵列的电流纹波的装置和方法，其具有通过使用串联连接在单级功率因数校正驱动器和光之间的线性电流调节器而减小的输出电压纹波发光二极管阵列，其主动地调节与单级功率因数校正驱动器的输出电压纹波对应的线性电流调节器的等效阻抗。

2. 发明申请

US20150084527A1 METHOD AND APPARATUS FOR CANCELLING OUTPUT CURRENT RIPPLES IN LED DRIVING CIRCUITS 有权
标题翻译：在LED驱动电路中取消输出电流的方法和装置
公开(公告)号：US20150084527A1
公开(公告)日：2015-03-26
申请号：US14037909
申请日：2013-09-26
申请人： Huizhou Light Engine Limited
发明人： Kam Wah Siu , Wa Hing Leung , Siu Hong Wong , Bo Tian
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0812 , Y02B20/345 , Y02B20/347
摘要： A device and method for reducing current ripple to a light emitting diode array having a single stage power factor correction driver with an output voltage ripple that is reduced by using a linear current regulator connected in series between the single stage power factor correction driver and the light emitting diode array, which actively adjusts an equivalent impedance of the linear current regulator in correspondence with the output voltage ripple of the single stage power factor correction driver.
摘要翻译：一种用于减小具有单级功率因数校正驱动器的发光二极管阵列的电流纹波的装置和方法，其具有通过使用串联连接在单级功率因数校正驱动器和光之间的线性电流调节器而减小的输出电压纹波发光二极管阵列，其主动地调节与单级功率因数校正驱动器的输出电压纹波对应的线性电流调节器的等效阻抗。

3. 发明授权

US09161404B2 AC LED array configuration switching circuit triggered by source voltage level 有权
标题翻译：交流LED阵列配置开关电路由源极电压触发
公开(公告)号：US09161404B2
公开(公告)日：2015-10-13
申请号：US14052045
申请日：2013-10-11
申请人： Huizhou Light Engine Limited
发明人： Siu Hong Wong , Wa Hing Leung , Kam Wah Siu
IPC分类号： H05B33/08
CPC分类号： H05B33/0824
摘要： An LED lighting circuit where the configuration of the connection of two or more LEDs are changed from parallel to series through the use of solid state switches depending on whether the voltage level from an AC source measured by a voltage detector exceeds the sum of the forward voltages of the LEDs. Also, a method of activating LEDs in an LED array lighting apparatus involving applying a rectified alternating current to two or more LEDs, each LED having a forward bias voltage; comparing the rectified alternating current to the sum of the forward bias voltages of the two or more LEDs; and changing the circuit configuration of the two or more LEDs between a parallel connection and a series connection with respect to the rectified alternating current depending on whether the rectified alternating current exceeds the sum of the forward bias voltages of the two or more LEDs.
摘要翻译：一种LED照明电路，其中根据来自电压检测器测量的来自AC电源的电压电平是否超过正向电压之和，通过使用固态开关将两个或更多个LED的连接的配置从并行改变为串联的LED。另外，在LED阵列照明装置中激活LED的方法，包括将整流的交流电施加到两个或更多个LED，每个LED具有正向偏置电压; 将整流的交流电流与两个或更多个LED的正向偏置电压的和进行比较; 以及根据整流的交流电流是否超过两个或更多个LED的正向偏置电压之和，相对于整流的交流电流在并联连接和串联连接之间改变两个或更多个LED的电路配置。

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