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1.发明申请公开(公告)号：US20050088862A1
公开(公告)日：2005-04-28
申请号：US10503958
申请日：2003-02-10
申请人： Masaaki Simada , Tomoyasu Yamada
发明人： Masaaki Simada , Tomoyasu Yamada
CPC分类号： H02M1/4208 , H02M1/36 , Y02B70/126
摘要： When an AC power source (1) is turned on, energy is accumulated in a backup capacitor (63) by an energy supply circuit (64). An internal power source (65) supplies the energy accumulated in the capacitor (63) to a control unit (49). Thus, a power factor improvement circuit (40-2) operates. When the power factor improvement circuit (40-2) operates to output a predetermined voltage, an output voltage detection circuit (67) detects the voltage, and switches the internal power source (66) on. The turned on internal power source (66) supplies the energy in the capacitor (63) to a control unit (56) to operate a DC/DC conversion circuit (50). In this way, by operating the DC/DC conversion circuit (50) after operating the power factor improvement circuit (40-2), the capacity of the capacitor (63) can be reduced.
摘要翻译： 当AC电源（1）接通时，由能量供给电路（64）将能量累积在备用电容器（63）中。 内部电源（65）将蓄积在电容器（63）中的能量提供给控制单元（49）。 因此，功率因数改善电路（40-2）工作。 当功率因数改善电路（40-2）工作以输出预定电压时，输出电压检测电路（67）检测电压，并切换内部电源（66）。 接通的内部电源（66）将电容器（63）中的能量提供给控制单元（56）以操作DC / DC转换电路（50）。 以这种方式，通过在操作功率因数改善电路（40-2）之后操作DC / DC转换电路（50），可以减小电容器（63）的容量。
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公开(公告)号：US06842353B2
公开(公告)日：2005-01-11
申请号：US10855030
申请日：2004-05-27
申请人： Tomoyasu Yamada , Masaaki Simada
发明人： Tomoyasu Yamada , Masaaki Simada
CPC分类号： H02M1/4225 , H02M1/36 , H02M3/33523 , H02M2001/0006 , H02M2001/007 , Y02B70/126
摘要： A switching power supply comprising an a.c.-to-d.c. converter circuit for connection to a source of commercial alternating current, and a d.c.-to-d.c. converter circuit for translating the d.c. output voltage of the a.c.-to-d.c. converter into desired d.c. voltage for application to a load. The d.c.-to-d.c. converter circuit is set into operation only after the output voltage of the a.c.-to-d.c. converter circuit has built up sufficiently, in order to preclude instability in the output voltage of the power supply during a startup period.
摘要翻译： 一种开关电源，包括a.c.-d.c。 转换器电路，用于连接到商业交流电源，以及直流到直流。 转换电路，用于转换直流 输出电压a.c.到d.c。 转换成所需的直流 施加到负载的电压。 d.c.-d.c。 转换器电路仅在a.c.-d.c的输出电压之后才能运行。 转换器电路已经充分积累，以防止在启动期间电源的输出电压不稳定。
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公开(公告)号：US06842350B2
公开(公告)日：2005-01-11
申请号：US10858432
申请日：2004-06-01
申请人： Tomoyasu Yamada , Masaaki Simada
发明人： Tomoyasu Yamada , Masaaki Simada
CPC分类号： H02M3/33507 , H02M3/335 , H02M2001/0006
摘要： A dc-to-dc converter includes a transformer having a primary winding connected to an input rectifying and smoothing circuit via an FET or like switching device, and a secondary winding connected to an output rectifying and smoothing circuit. A resonance capacitor is connected in parallel with the switching device. A switch control circuit cyclically turns the switching device on and off so as to keep constant the output voltage of the output rectifying and smoothing circuit by feedback control. The switch control circuit drives the switching device in light load mode when a flyback voltage developed by the transformer terminates earlier than each clock pulse, and in heavy load mode, in which each on-off cycle of the switching device is longer than in the light load mode, when the flyback voltage terminates later than each clock pulse.
摘要翻译： 一个直流 - 直流转换器包括一个变压器，其变压器具有通过FET等开关装置连接到输入整流和平滑电路的初级绕组，以及连接到输出整流和平滑电路的次级绕组。 谐振电容器与开关装置并联连接。 开关控制电路循环地打开和关闭开关装置，以通过反馈控制保持输出整流和平滑电路的输出电压恒定。 当变压器产生的反激电压早于每个时钟脉冲时，开关控制电路在轻负载模式下驱动开关器件，并且在重负载模式中，开关器件的每个开 - 关周期都比在光中长 当回扫电压在每个时钟脉冲之后结束时，负载模式。
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公开(公告)号：US06980446B2
公开(公告)日：2005-12-27
申请号：US10503958
申请日：2003-02-10
申请人： Masaaki Simada , Tomoyasu Yamada
发明人： Masaaki Simada , Tomoyasu Yamada
CPC分类号： H02M1/4208 , H02M1/36 , Y02B70/126
摘要： When an AC power source (1) is turned on, energy is accumulated in a backup capacitor (63) by an energy supply circuit (64). An internal power source (65) supplies the energy accumulated in the capacitor (63) to a control unit (49). Thus, a power factor improvement circuit (40-2) operates. When the power factor improvement circuit (40-2) operates to output a predetermined voltage, an output voltage detection circuit (67) detects the voltage, and switches the internal power source (66) on. The turned on internal power source (66) supplies the energy in the capacitor (63) to a control unit (56) to operate a DC/DC conversion circuit (50). In this way, by operating the DC/DC conversion circuit (50) after operating the power factor improvement circuit (40-2), the capacity of the capacitor (63) can be reduced.
摘要翻译： 当AC电源（1）接通时，由能量供给电路（64）将能量累积在备用电容器（63）中。 内部电源（65）将蓄积在电容器（63）中的能量提供给控制单元（49）。 因此，功率因数改善电路（40-2）工作。 当功率因数改善电路（40-2）工作以输出预定电压时，输出电压检测电路（67）检测电压，并切换内部电源（66）。 接通的内部电源（66）将电容器（63）中的能量提供给控制单元（56）以操作DC / DC转换电路（50）。 以这种方式，通过在操作功率因数改善电路（40-2）之后操作DC / DC转换电路（50），可以减小电容器（63）的容量。
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