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    • 6. 发明申请
    • Efficient Power Supplies and Methods for Creating Such
    • 高效电源及其制作方法
    • US20080232146A1
    • 2008-09-25
    • US12018645
    • 2008-01-23
    • Ted ThomasRoman KorsunskyMichael G. Amaro
    • Ted ThomasRoman KorsunskyMichael G. Amaro
    • H02M7/217
    • H02M3/33592Y02B70/1475
    • Various embodiments of the present invention provide rectifier controllers, power supplies and methods for operating such. As one example, a rectifier controller circuit is disclosed that includes a transistor, a phase locked loop circuit, a period counter and a combinational logic circuit. One leg of the transistor is electrically coupled to a switch node of a power supply, and is in parallel to a diode of the power supply. The phase locked loop circuit receives a signal representing a voltage at the switch node, and is operable to synchronize to a period of the signal representing the voltage at the switch node. The period counter divides the period of the signal representing the voltage at the switch node into segments. The combinational logic circuit is operable to turn the transistor on an assertion delay period after a first transition of the signal representing the voltage at the switch node, and to turn the transistor off before a second transition of the signal representing the voltage at the switch node based on the period counter.
    • 本发明的各种实施例提供了整流器控制器,电源和用于操作的方法。 作为一个示例,公开了一种整流器控制器电路,其包括晶体管,锁相环电路,周期计数器和组合逻辑电路。 晶体管的一条支路电耦合到电源的开关节点,并且与电源的二极管并联。 锁相环电路接收表示开关节点处的电压的信号,并且可操作以与表示开关节点处的电压的信号的周期同步。 周期计数器将表示交换节点处的电压的信号的周期分割成段。 组合逻辑电路可操作以在表示开关节点上的电压的信号的第一跃迁之后将晶体管转换到断言延迟周期,并且在表示开关节点处的电压的信号的第二跃迁之前将晶体管截止 根据期间计数。