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    • 2. 发明公开
    • ISOLATING POWER SUPPLY AND OUTPUT FEEDBACK METHOD THEREFOR
    • EP3291431A4
    • 2018-05-02
    • EP15890535
    • 2015-08-26
    • ZTE CORP
    • WANG LINGUO
    • H02M3/335
    • H02M3/33523H02M3/33515
    • At least some embodiments of present invention provide an isolated power supply and an output feedback method for the isolated power supply. The isolated power supply includes: an inverter circuit, an isolation transformer, a rectifier circuit and a controller, wherein the isolation transformer comprises at least one primary winding and at least one secondary winding, and the controller is located at a side of the at least one primary winding; the inverter circuit is arranged to convert an input voltage signal of the isolated power supply into a first high-frequency switching signal, and transmit the first high-frequency switching signal to the at least one primary winding; the isolation transformer is arranged to couple the first high-frequency switching signal on the at least one primary winding to the at least one secondary winding, form a second high-frequency switching signal on the at least one secondary winding, couple the second high-frequency switching signal on the at least one secondary winding to the at least one primary winding and form a third high-frequency switching signal on the at least one primary winding; the rectifier circuit is arranged to convert the second high-frequency switching signal on the at least one secondary winding into a direct-current voltage signal; the controller is arranged to obtain the third high-frequency switching signal, obtain an amplitude of the direct-current voltage signal according to the third high-frequency switching signal, and control the inverter circuit according to the amplitude so as to configure the amplitude as a preset threshold value. The isolated power supply solves a problem of a large volume and small power density of a power supply.
    • 5. 发明公开
    • ISOLATING POWER SUPPLY AND OUTPUT FEEDBACK METHOD THEREFOR
    • 隔离电源和输出反馈方法
    • EP3291431A1
    • 2018-03-07
    • EP15890535.6
    • 2015-08-26
    • ZTE Corporation
    • WANG, Linguo
    • H02M3/335
    • H02M3/33523H02M3/33515
    • At least some embodiments of present invention provide an isolated power supply and an output feedback method for the isolated power supply. The isolated power supply includes: an inverter circuit, an isolation transformer, a rectifier circuit and a controller, wherein the isolation transformer comprises at least one primary winding and at least one secondary winding, and the controller is located at a side of the at least one primary winding; the inverter circuit is arranged to convert an input voltage signal of the isolated power supply into a first high-frequency switching signal, and transmit the first high-frequency switching signal to the at least one primary winding; the isolation transformer is arranged to couple the first high-frequency switching signal on the at least one primary winding to the at least one secondary winding, form a second high-frequency switching signal on the at least one secondary winding, couple the second high-frequency switching signal on the at least one secondary winding to the at least one primary winding and form a third high-frequency switching signal on the at least one primary winding; the rectifier circuit is arranged to convert the second high-frequency switching signal on the at least one secondary winding into a direct-current voltage signal; the controller is arranged to obtain the third high-frequency switching signal, obtain an amplitude of the direct-current voltage signal according to the third high-frequency switching signal, and control the inverter circuit according to the amplitude so as to configure the amplitude as a preset threshold value. The isolated power supply solves a problem of a large volume and small power density of a power supply.
    • 本发明的至少一些实施例为隔离电源提供隔离电源和输出反馈方法。 所述隔离电源包括:逆变电路,隔离变压器,整流电路和控制器,所述隔离变压器包括至少一个初级绕组和至少一个次级绕组,所述控制器位于所述至少一个 一个初级绕组; 所述逆变电路用于将所述隔离电源的输入电压信号转换为第一高频开关信号,并将所述第一高频开关信号传输至所述至少一个初级绕组; 所述隔离变压器被布置成将所述至少一个初级绕组上的所述第一高频开关信号耦合到所述至少一个次级绕组,在所述至少一个次级绕组上形成第二高频开关信号, 将所述至少一个次级绕组上的高频开关信号提供给所述至少一个初级绕组,并在所述至少一个初级绕组上形成第三高频开关信号; 所述整流器电路被布置为将所述至少一个次级绕组上的所述第二高频开关信号转换成直流电压信号; 所述控制器用于获取所述第三高频开关信号,根据所述第三高频开关信号获取所述直流电压信号的幅值,并根据所述幅值控制所述逆变电路,从而将所述幅值配置为 预设的阈值。 隔离式电源解决了电源的大容量和小功率密度的问题。