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    • 1. 发明申请
    • CIRCUIT FOR DRIVING SYNCHRONOUS RECTIFIER AND POWER SUPPLY APPARATUS INCLUDING THE SAME
    • 驱动同步整流器的电路及其相关的电源设备
    • US20150171728A1
    • 2015-06-18
    • US14571910
    • 2014-12-16
    • SAMSUNG ELECTRO-MECHANICS CO., LTD.
    • Jung Chul GONGJong Rok KIMHo Joon JANGHwan CHO
    • H02M1/08H02M7/217
    • H02M3/33592Y02B70/1475
    • A circuit for driving a synchronous rectifier may include a voltage level detecting unit detecting a voltage level of the synchronous rectifier; an on/off signal generating unit generating an on signal controlling the synchronous rectifier to be turned on when the voltage level detected by the voltage level detecting unit is decreased to a voltage level equal to or less than a preset reference voltage level, and generating an off signal controlling the synchronous rectifier to be turned off when the voltage level detected by the voltage level detecting unit is increased to a voltage level exceeding the reference voltage level; a minimum time determining unit controlling the synchronous rectifier to be turned on during a preset first period; and a blanking time determining unit controlling the synchronous rectifier so as not to be turned on during a preset second period after the synchronous rectifier has been turned off.
    • 用于驱动同步整流器的电路可以包括检测同步整流器的电压电平的电压电平检测单元; 当由电压电平检测单元检测到的电压电平降低到等于或小于预设参考电压电平的电压电平时,产生控制同步整流器导通的导通信号的开/关信号产生单元, 关闭信号,当由电压电平检测单元检测到的电压电平增加到超过参考电压电平的电压电平时,控制同步整流器截止; 最小时间确定单元,其在预设的第一时段期间控制所述同步整流器导通; 以及消隐时间确定单元,控制所述同步整流器,以便在所述同步整流器已经被断开之后的预设的第二时段期间不被接通。