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1. 发明授权

US08013586B2 Synchronous rectifier having precise on/off switching times 有权
标题翻译：同步整流器具有精确的开/关切换时间
公开(公告)号：US08013586B2
公开(公告)日：2011-09-06
申请号：US11961401
申请日：2007-12-20
申请人： Ondrej Tlaskal , Bohumil Janik , David Burda , Julien Picq , Miroslav Hukel
发明人： Ondrej Tlaskal , Bohumil Janik , David Burda , Julien Picq , Miroslav Hukel
IPC分类号： G05F1/00
CPC分类号： H02M1/38 , H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A synchronous rectifier, including an energy storage element having a terminal; a power supply input, connected to the terminal of the storage element in a first time interval; a reference line connected to the terminal of the storage element in a second time interval; and a zero comparator, coupled to the terminal of the storage element to detect a current flowing in the energy storage element and disconnect the terminal of the storage element from the reference line upon detecting a zero current, the zero comparator having an offset and a propagation time; the zero comparator further having an offset control input and an output. An offset regulating loop is coupled between the output of the zero comparator and the offset control input and regulates the offset of the zero comparator to compensate the propagation time.
摘要翻译：一种同步整流器，包括具有端子的能量存储元件; 电源输入，在第一时间间隔连接到所述存储元件的终端; 在第二时间间隔连接到所述存储元件的终端的参考线; 以及零比较器，耦合到存储元件的端子以检测流过能量存储元件的电流，并且在检测到零电流时将存储元件的端子与参考线断开，零比较器具有偏移和传播时间; 零比较器还具有偏移控制输入和输出。偏移调节回路耦合在零比较器的输出和偏移控制输入之间，并调节零比较器的偏移量以补偿传播时间。

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