公开(公告)号：US09474120B2

公开(公告)日：2016-10-18

申请号：US14884850

申请日：2015-10-16

申请人： Dialog Semiconductor (UK) Limited

发明人： Julian Tyrrell ,  Sander Heuvelmans ,  Nebojsa Jelaca ,  Gary Hague

IPC分类号： H05B33/08

CPC分类号： H05B33/0845 ,  H05B33/0815 ,  Y02B20/346

摘要： A controller for a driver circuit of a solid state lighting (SSL) device is described. The driver circuit comprises a power converter to transfer energy from AC mains voltage to the SSL device. The controller determines a dim level for the SSL device. The controller also determines a synchronization signal by comparing a voltage derived from the input voltage with a pre-determined threshold. The controller determines a sequence of PWM pulses based on the synchronization signal. The controller operates the power converter in a first operation mode for supplying energy to the SSL device at a first energy level within the sequence of PWM pulses, and operates the power converter in a second operation mode in between the PWM pulses. The second energy level is lower than the first energy level and the first energy level and/or a width of the PWM pulses depend on the dim level.

摘要翻译： 描述了用于固态照明（SSL）装置的驱动电路的控制器。 驱动器电路包括一个功率转换器，用于将能量从交流电源电压传输到SSL设备。 控制器确定SSL设备的昏暗级别。 控制器还通过将从输入电压导出的电压与预定阈值进行比较来确定同步信号。 控制器基于同步信号确定PWM脉冲序列。 所述控制器以第一操作模式操作所述功率转换器，以在所述PWM脉冲序列内的第一能量级向所述SSL装置提供能量，并且在所述PWM脉冲之间的第二操作模式下操作所述功率转换器。 第二能量水平低于第一能级，并且第一能级和/或PWM脉冲的宽度取决于昏暗水平。

公开(公告)号：US20160119992A1

公开(公告)日：2016-04-28

申请号：US14884850

申请日：2015-10-16

申请人： Dialog Semiconductor (UK) Limited

发明人： Julian Tyrrell ,  Sander Heuvelmans ,  Nebojsa Jelaca ,  Gary Hague

IPC分类号： H05B33/08

CPC分类号： H05B33/0845 ,  H05B33/0815 ,  Y02B20/346

摘要： A controller for a driver circuit of a solid state lighting (SSL) device is described. The driver circuit comprises a power converter to transfer energy from AC mains voltage to the SSL device. The controller determines a dim level for the SSL device. The controller also determines a synchronization signal by comparing a voltage derived from the input voltage with a pre-determined threshold. The controller determines a sequence of PWM pulses based on the synchronization signal. The controller operates the power converter in a first operation mode for supplying energy to the SSL device at a first energy level within the sequence of PWM pulses, and operates the power converter in a second operation mode in between the PWM pulses. The second energy level is lower than the first energy level and the first energy level and/or a width of the PWM pulses depend on the dim level.

摘要翻译： 描述了用于固态照明（SSL）装置的驱动电路的控制器。 驱动电路包括一个功率转换器，用于将能量从交流电源电压传输到SSL设备。 控制器确定SSL设备的昏暗级别。 控制器还通过将从输入电压导出的电压与预定阈值进行比较来确定同步信号。 控制器基于同步信号确定PWM脉冲序列。 所述控制器以第一操作模式操作所述功率转换器，以在所述PWM脉冲序列内的第一能量级向所述SSL装置提供能量，并且在所述PWM脉冲之间的第二操作模式下操作所述功率转换器。 第二能级低于第一能级，并且第一能级和/或PWM脉冲的宽度取决于昏暗级别。