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1. 发明授权

US06278620B1 Switching power-supply circuit 失效
标题翻译：开关电源电路
公开(公告)号：US06278620B1
公开(公告)日：2001-08-21
申请号：US09667731
申请日：2000-09-22
申请人： Masayuki Yasumura
发明人： Masayuki Yasumura
IPC分类号： H02M3338
CPC分类号： H02M1/4241 , H02M3/3385 , Y02B70/126
摘要： The present invention relates to a switching power-supply circuit comprising: rectifying and smoothing means for generating a rectified and smoothed voltage and outputting the rectified and smoothed voltage as a direct-current input voltage; an insulating converter transformer for transferring a primary-side output to a secondary side; switching means for intermittently passing on the direct-current input voltage to a primary winding of the insulating converter transformer; a primary-side resonance circuit for actuating the switching means in a voltage resonance mode; power-factor improvement means for improving a power factor by generating intermittently a rectified current based on the fed-back switching output voltage; a secondary-side resonance circuit on a secondary side of the insulating converter transformer; direct-current output voltage generation means carrying out a rectification operation in order to generate a secondary-side direct-current output voltage; and constant-voltage control means for executing constant-voltage control on the secondary-side direct-current output voltage.
摘要翻译：开关电源电路技术领域本发明涉及一种开关电源电路，包括：整流和平滑装置，用于产生整流和平滑电压并输出经整流和平滑的电压作为直流输入电压; 用于将初级侧输出传送到次级侧的绝缘转换变压器; 切换装置，用于将所述直流输入电压间歇地传递到所述绝缘转换变压器的初级绕组; 用于以电压共振模式致动所述开关装置的初级侧谐振电路; 功率因数改善装置，用于通过基于所述反馈开关输出电压间歇地产生整流电流来提高功率因数; 在绝缘转换变压器的二次侧的次级侧谐振电路; 直流输出电压产生装置，进行整流动作以产生次级侧直流输出电压; 以及用于对次级侧直流输出电压进行恒定电压控制的恒压控制装置。

2. 发明授权

US06639811B2 Switching power supply unit 有权
标题翻译：开关电源单元
公开(公告)号：US06639811B2
公开(公告)日：2003-10-28
申请号：US10232901
申请日：2002-09-03
申请人： Tatsuya Hosotani , Hiroshi Takemura
发明人： Tatsuya Hosotani , Hiroshi Takemura
IPC分类号： H02M3338
CPC分类号： H02M3/3385
摘要： A switching power supply unit includes first and second switching elements which are alternately turned on/off so as to perform self-excited oscillation. An inductor and a capacitor resonate during an OFF-period of the first switching element. After the second switching element is turned on, a resonance current applied to a series circuit including the second switching element and the indictor is interrupted before energy is completely emitted from a secondary winding. Accordingly, a voltage is generated at the inductor and a voltage at a transformer is reversed. The switching power supply unit also includes an ON-time control circuit in which a time constant is set so as to turn off the second switching element accordingly.
摘要翻译：开关电源单元包括交替地导通/截止以便进行自激振荡的第一和第二开关元件。电感器和电容器在第一开关元件的截止周期期间谐振。在第二开关元件接通之后，施加到包括第二开关元件和指示器的串联电路的谐振电流在能量从次级绕组完全发射之前被中断。因此，在电感器处产生电压，并且变压器处的电压反转。开关电源单元还包括接通时间控制电路，其中设置时间常数以相应地关闭第二开关元件。

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