DRIVING CIRCUIT OF LIGHT EMITTING DIODES HAVING AT LEAST ONE BYPASS CIRCUIT, AND DRIVING METHOD THEREOF
    5.
    发明申请
    DRIVING CIRCUIT OF LIGHT EMITTING DIODES HAVING AT LEAST ONE BYPASS CIRCUIT, AND DRIVING METHOD THEREOF 审中-公开
    具有至少一个旁路电路的发光二极管的驱动电路及其驱动方法

    公开(公告)号:US20120262074A1

    公开(公告)日:2012-10-18

    申请号:US13425412

    申请日:2012-03-20

    IPC分类号: H05B37/02

    CPC分类号: H05B33/083

    摘要: A driving circuit of light emitting diodes includes a power supply circuit, at least one bypass circuit, and a temperature control circuit. The power supply circuit is used for providing a driving voltage to at least one series of light emitting diodes. Each bypass circuit of the at least one bypass circuit is used for being turned on when an ambient temperature is lower than a predetermined temperature. The temperature control circuit is coupled to the at least one bypass circuit for detecting the ambient temperature, and sending a control signal to the at least one bypass circuit when the ambient temperature is lower than the predetermined temperature. Therefore, the driving voltage can still drive the at least one series of light emitting diodes when the ambient temperature is lower than the predetermined temperature.

    摘要翻译: 发光二极管的驱动电路包括电源电路,至少一个旁路电路和温度控制电路。 电源电路用于向至少一系列的发光二极管提供驱动电压。 当环境温度低于预定温度时,所述至少一个旁路电路的每个旁路电路用于接通。 温度控制电路耦合到至少一个旁路电路,用于检测环境温度,并且当环境温度低于预定温度时,将控制信号发送到至少一个旁路电路。 因此,当环境温度低于预定温度时,驱动电压仍能驱动至少一系列的发光二极管。