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    • 24. 发明申请
    • Method and apparatus for transformerless safety isolation in a power supply
    • 电源中无变压器安全隔离的方法和装置
    • US20070253225A1
    • 2007-11-01
    • US11412630
    • 2006-04-26
    • Stefan BaurleDavid MatthewsRoland Saint-Pierre
    • Stefan BaurleDavid MatthewsRoland Saint-Pierre
    • H02M3/335
    • H02M3/07
    • An apparatus and method are disclosed to provide transformerless safety isolation in a power supply. One example regulated power converter includes input terminals included in a primary circuit of the power converter. Output terminals are included in a secondary circuit of the power converter. A plurality of safety capacitors including first and second safety capacitors are also included. Each of the plurality of safety capacitors includes a respective first terminal coupled to the primary circuit and a respective second terminal coupled to the secondary circuit. The plurality of safety capacitors galvanically isolates the primary circuit from the secondary circuit. A power switch is included in the primary circuit. The power switch is coupled such that switching of the power switch causes energy to transfer between the primary and secondary circuits through the plurality of safety capacitors. Substantially all of the energy that is transferred between the primary and secondary circuits is through the plurality of safety capacitors.
    • 公开了一种在电源中提供无变压器安全隔离的装置和方法。 一个示例性调节功率转换器包括包括在功率转换器的初级电路中的输入端子。 输出端子被包括在功率转换器的次级电路中。 还包括包括第一和第二安全电容器的多个安全电容器。 多个安全电容器中的每一个包括耦合到主电路的相应的第一端子和耦合到次级电路的相应的第二端子。 多个安全电容器将初级电路与次级电路电隔离。 电源开关包含在主电路中。 功率开关被耦合,使得功率开关的切换导致能量通过多个安全电容器在初级和次级电路之间传递。 在主电路和次级电路之间传输的基本上所有的能量通过多个安全电容器。