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    • 1. 发明授权
    • Power supply apparatus
    • 电源设备
    • US06522560B1
    • 2003-02-18
    • US09951997
    • 2001-09-13
    • Wei-Ming LinHeng-Chia FanKo-Yu HsiaoHsin-Liang Lin
    • Wei-Ming LinHeng-Chia FanKo-Yu HsiaoHsin-Liang Lin
    • H02M542
    • H02M3/33507H02M3/33592H02M2001/0006Y02B70/1475
    • A power supply apparatus comprises a switching circuit including a primary power train circuit, a main transformer and a secondary power train circuit for receiving and rectifying an input voltage, an output filter for providing an output voltage to a load, and a voltage feedback coupled in series between the output voltage and the input voltage, in which the voltage feedback circuit includes a feedback control circuit for detecting the output voltage and outputting a voltage feedback control signal in response to the output voltage, a control circuit for outputting a first oscillating signal to the primary power train circuit, a magnetic element coupled in series between the feedback control circuit and the control circuit for receiving a second oscillating signal from the control circuit and coupling the second oscillating signal to the secondary power train circuit to drive the secondary power train circuit to accomplish synchronous rectification and coupling the voltage feedback control signal to the control circuit, and a rectifier circuit coupled in series between the feedback control circuit and the magnetic element for rectifying the second oscillating signal into an auxiliary voltage for operating the feedback control circuit.
    • 电源装置包括切换电路,其包括用于接收和整流输入电压的主电力系统电路,主变压器和二次电力系统电路,用于向负载提供输出电压的输出滤波器和耦合到 串联在输出电压和输入电压之间,其中电压反馈电路包括用于检测输出电压的反馈控制电路并且响应于输出电压输出电压反馈控制信号;控制电路,用于将第一振荡信号输出到 所述主动力传动系电路,串联在所述反馈控制电路和所述控制电路之间的磁性元件,用于从所述控制电路接收第二振荡信号,并将所述第二振荡信号耦合到所述次级动力传动系电路以驱动所述次级动力传动系电路 实现电压反馈的同步整流和耦合 控制电路的控制信号,以及串联在反馈控制电路和磁性元件之间的整流电路,用于将第二振荡信号整流为用于操作反馈控制电路的辅助电压。