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公开(公告)号：US20050243492A1
公开(公告)日：2005-11-03
申请号：US10504865
申请日：2003-12-24
申请人： Noritoshi Imamura
发明人： Noritoshi Imamura
CPC分类号： H02M1/4258 , Y02B70/126 , Y02P80/112
摘要： A power factor is improved using a simplified structure without particularly providing a power factor improving circuit, and high efficiency is obtained. For this purpose, one terminal of a direct-current power source 12, from which a pulsating current is obtained, is connected through a choke coil 13 to one end of an auxiliary coil 14c constituting a converter transformer 14; the other end of the auxiliary coil 14c is connected to the other terminal of the direct-current power source 12 through a series circuit of a diode 15 and a capacitor 16; a connection midpoint between the diode 15 and the capacitor 16 is connected to one end of a primary coil 14aof the converter transformer 14; the other end of the primary coil 14a is connected to the other terminal of the direct-current power source 12 through a switching element 17; a secondary coil 14b of the converter transformer 14 is connected to direct-current voltage output terminals 19aand 19b through a rectifying circuit 18; the direct-current voltage output terminal 19a is connected to an input side of a pulse width modulation control circuit 20; and an output terminal of the pulse width modulation control circuit 20 is connected to a control electrode of the switching element 17.
摘要翻译： 在不特别提供功率因数改善电路的情况下，使用简化的结构来改善功率因数，并且获得高效率。 为此，获得脉动电流的直流电源12的一个端子通过扼流线圈13连接到构成变换器变压器14的辅助线圈14c的一端; 辅助线圈14c的另一端通过二极管15和电容器16的串联电路连接到直流电源12的另一个端子; 二极管15和电容器16之间的连接中点连接到变换器变压器14的初级线圈14a的一端; 初级线圈14a的另一端通过开关元件17连接到直流电源12的另一端子; 转换器变压器14的次级线圈14b通过整流电路18连接到直流电压输出端子19a和19b; 直流电压输出端子aa连接到脉宽调制控制电路20的输入侧; 并且脉冲宽度调制控制电路20的输出端连接到开关元件17的控制电极。
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公开(公告)号：US20050117371A1
公开(公告)日：2005-06-02
申请号：US10895826
申请日：2004-07-22
申请人： Noritoshi Imamura
发明人： Noritoshi Imamura
CPC分类号： H02M1/4258 , G05F1/70 , Y02B70/126 , Y02P80/112
摘要： The object of the present invention is to improve the power factor and at the same time to obtain a high efficient operation. It is constituted such that one terminal of a DC power supply 12 from which a pulsating flow is obtained is connected to a connection mid point of one terminal of a primary winding 15a and the other terminal of an auxiliary winding 15c wound in phase on a converter transformer 15 by means of a series circuit of a choke coil 13 and a first diode 14; one terminal of the auxiliary winding 15c of the converter transformer 15 is connected to the other terminal of the DC power supply 12 through a first capacitor 16 and at the same time the other terminal of the primary winding 15a is connected to the other terminal of the DC power supply 12 through a switching device 17; a secondary winding 15b wound in counter phase with the primary winding 15a for the converter transformer 15 is connected to a DC voltage output terminal 19a, 19b through a rectifying circuit 18; the DC voltage output terminal 19a is connected to an input side of a pulse width modulation control circuit 20; and an output terminal of the pulse width modulation circuit 20 is connected to a control electrode of the switching device 17.
摘要翻译： 本发明的目的是提高功率因数并同时获得高效率的操作。 构成为使得获得脉动流的直流电源12的一个端子连接到初级绕组15a的一个端子的连接中点，并且辅助绕组15c的另一个端子相位缠绕在 转换器变压器15，通过扼流线圈13和第一二极管14的串联电路; 变流器变压器15的辅助绕组15c的一个端子通过第一电容器16连接到直流电源12的另一个端子，同时初级绕组15a的另一个端子连接到另一个端子 的直流电源12; 与变换器变压器15的初级绕组15a相反地卷绕的次级绕组15b通过整流电路18连接到直流电压输出端子21a，19b; 直流电压输出端子aa连接到脉宽调制控制电路20的输入侧; 并且脉冲宽度调制电路20的输出端子连接到开关装置17的控制电极。
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公开(公告)号：US06175219B1
公开(公告)日：2001-01-16
申请号：US09382547
申请日：1999-08-25
申请人： Noritoshi Imamura , Katsumi Kobori
发明人： Noritoshi Imamura , Katsumi Kobori
IPC分类号： G05F110
CPC分类号： H02M3/155 , H02M2003/1552
摘要： A booster type converter (19) wherein a boosting inductor is constituted from a transformer (20) provided with an auxiliary winding (20b), a capacitor (26) is connected to the auxiliary winding, whereby the capacitor is charged by means of resonance of a leakage inductance of the transformer (20) and the capacitor (26), and at the same time, it makes possible to conduct zero voltage switching of the booster type converter (19) on the basis of the electric charge charged in the capacitor, whereby it is intended to attain high efficiency in the booster type converter.
摘要翻译： 一种升压型转换器（19），其中升压电感器由设置有辅助绕组（20b）的变压器（20）构成，电容器（26）连接到辅助绕组，由此电容器通过谐振 变压器（20）和电容器（26）的漏电感，同时可以根据在电容器中充电的电荷进行升压型变换器（19）的零电压切换， 从而旨在在增压型转换器中获得高效率。
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公开(公告)号：US6043993A
公开(公告)日：2000-03-28
申请号：US283232
申请日：1999-04-01
申请人： Katsumi Kobori , Noritoshi Imamura
发明人： Katsumi Kobori , Noritoshi Imamura
CPC分类号： H02M3/3372 , H02M3/3376
摘要： In a switching power source, by alternately turning on first and second MOS transistors, a switching current flows to a primary winding of a transformer, and an alternate current is transferred to a secondary side. The alternate voltage caused in a secondary winding is full-wave rectified by first and second diodes. Resonance elements (capacitor and coil) are connected to a tertiary winding coupled to an isolation transfer, thereby enabling the primary side to be set into a resonated state and to be set to a current resonance type switching power source. Since a leakage inductance of the transformer is not set to a resonance element, an interval between the windings of the isolation transformer can be closely coupled. Since a resonance current is not directly turned on/off, a peak value of the primary current is decreased and switching loss and loss due to an on-resistance can be decreased. The efficiency of a current resonance type switching power source is thus improved.
摘要翻译： 在开关电源中，通过交替地接通第一和第二MOS晶体管，开关电流流向变压器的初级绕组，并且将交流电流传送到次级侧。 次级绕组中产生的交流电压由第一和第二二极管全波整流。 谐振元件（电容器和线圈）连接到耦合到隔离转移的三级绕组，从而使初级侧能够被设置为谐振状态并被设置为电流谐振型开关电源。 由于变压器的漏电感未设置为谐振元件，隔离变压器的绕组之间的间隔可以紧密耦合。 由于谐振电流不直接导通/截止，所以初级电流的峰值减小，并且能够降低由导通电阻引起的开关损耗和损耗。 因此，提高了电流谐振型开关电源的效率。
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公开(公告)号：US07023711B2
公开(公告)日：2006-04-04
申请号：US10895826
申请日：2004-07-22
申请人： Noritoshi Imamura
发明人： Noritoshi Imamura
IPC分类号： H02M3/335
CPC分类号： H02M1/4258 , G05F1/70 , Y02B70/126 , Y02P80/112
摘要： The object of the present invention is to improve the power factor and at the same time to obtain a high efficient operation. It is constituted such that one terminal of a DC power supply 12 from which a pulsating flow is obtained is connected to a connection mid point of one terminal of a primary winding 15a and the other terminal of an auxiliary winding 15c wound in phase on a converter transformer 15 by means of a series circuit of a choke coil 13 and a first diode 14; one terminal of the auxiliary winding 15c of the converter transformer 15 is connected to the other terminal of the DC power supply 12 through a first capacitor 16 and at the same time the other terminal of the primary winding 15a is connected to the other terminal of the DC power supply 12 through a switching device 17; a secondary winding 15b wound in counter phase with the primary winding 15a for the converter transformer 15 is connected to a DC voltage output terminal 19a, 19b through a rectifying circuit 18; the DC voltage output terminal 19a is connected to an input side of a pulse width modulation control circuit 20; and an output terminal of the pulse width modulation circuit 20 is connected to a control electrode of the switching device 17.
摘要翻译： 本发明的目的是提高功率因数并同时获得高效率的操作。 构成为使得获得脉动流的直流电源12的一个端子连接到初级绕组15a的一个端子的连接中点，并且辅助绕组15c的另一个端子相位缠绕在 转换器变压器15，通过扼流线圈13和第一二极管14的串联电路; 变流器变压器15的辅助绕组15c的一个端子通过第一电容器16连接到直流电源12的另一个端子，同时初级绕组15a的另一个端子连接到另一个端子 的直流电源12; 与变换器变压器15的初级绕组15a相反地卷绕的次级绕组15b通过整流电路18连接到直流电压输出端子21a，19b; 直流电压输出端子aa连接到脉宽调制控制电路20的输入侧; 并且脉冲宽度调制电路20的输出端子连接到开关装置17的控制电极。
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公开(公告)号：US6130825A
公开(公告)日：2000-10-10
申请号：US266263
申请日：1999-03-11
申请人： Noritoshi Imamura , Katsumi Kobori
发明人： Noritoshi Imamura , Katsumi Kobori
IPC分类号： H02M3/28 , H02M3/335 , H02M7/5387
CPC分类号： H02M3/33592 , Y02B70/1433 , Y02B70/1475
摘要： In a switching power supply, primary-side MOS transistors are alternately turned on, so that a resonant current flows into the primary winding of a transformer and an alternate power is transferred to the secondary side. The alternate voltage generated at the secondary winding is applied by the voltage generated at the wound-up secondary winding to the gates of secondary-side MOS transistors such that they are turned on respectively in periods when the polarity of the voltage is positive. Rectified currents flow into a capacitor through a choke coil to perform synchronous rectification. If the voltage of a smoothing capacitor becomes higher than the alternate output voltage when the transformer is inverted, reverse currents flow into the secondary-side MOS transistors. With the counterelectromotive force of the choke coil, the reverse currents flowing when the transformer is inverted are suppressed, and the efficiency of the switching power supply is prevented from decreasing.
摘要翻译： 在开关电源中，初级侧MOS晶体管交替导通，使得谐振电流流入变压器的初级绕组，并且替代功率被传递到次级侧。 在次级绕组产生的交替电压通过在绕组次级绕组产生的电压施加到次级侧MOS晶体管的栅极，使得它们在电压的极性为正的时段分别导通。 整流电流通过扼流圈流入电容器进行同步整流。 如果平滑电容器的电压变得高于变压器反相时的交替输出电压，则反向电流流入次级侧MOS晶体管。 利用扼流线圈的反电动势，抑制了变压器反相时流过的反向电流，防止开关电源的效率降低。
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公开(公告)号：US07254045B2
公开(公告)日：2007-08-07
申请号：US10504865
申请日：2003-12-24
申请人： Noritoshi Imamura
发明人： Noritoshi Imamura
IPC分类号： H02M3/335
CPC分类号： H02M1/4258 , Y02B70/126 , Y02P80/112
摘要： A power factor is improved using a simplified structure without particularly providing a power factor improving circuit, and high efficiency is obtained. For this purpose, one terminal of a direct-current power source 12, from which a pulsating current is obtained, is connected through a choke coil 13 to one end of an auxiliary coil 14c constituting a converter transformer 14; the other end of the auxiliary coil 14c is connected to the other terminal of the direct-current power source 12 through a series circuit of a diode 15 and a capacitor 16; a connection midpoint between the diode 15 and the capacitor 16 is connected to one end of a primary coil 14a of the converter transformer 14; the other end of the primary coil 14a is connected to the other terminal of the direct-current power source 12 through a switching element 17; a secondary coil 14b of the converter transformer 14 is connected to direct-current voltage output terminals 19a and 19b through a rectifying circuit 18; the direct-current voltage output terminal 19a is connected to an input side of a pulse width modulation control circuit 20; and an output terminal of the pulse width modulation control circuit 20 is connected to a control electrode of the switching element 17.
摘要翻译： 在不特别提供功率因数改善电路的情况下，使用简化的结构来改善功率因数，并且获得高效率。 为此，获得脉动电流的直流电源12的一个端子通过扼流线圈13连接到构成变换器变压器14的辅助线圈14c的一端; 辅助线圈14c的另一端通过二极管15和电容器16的串联电路连接到直流电源12的另一个端子; 二极管15和电容器16之间的连接中点连接到变换器变压器14的初级线圈14a的一端; 初级线圈14a的另一端通过开关元件17连接到直流电源12的另一端子; 转换器变压器14的次级线圈14b通过整流电路18连接到直流电压输出端子19a和19b; 直流电压输出端子aa连接到脉宽调制控制电路20的输入侧; 并且脉冲宽度调制控制电路20的输出端连接到开关元件17的控制电极。
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公开(公告)号：US6072701A
公开(公告)日：2000-06-06
申请号：US288633
申请日：1999-04-09
申请人： Nobuo Sato , Yuji Sekikawa , Noritoshi Imamura
发明人： Nobuo Sato , Yuji Sekikawa , Noritoshi Imamura
CPC分类号： H02M3/33592 , Y02B70/1433 , Y02B70/1475
摘要： In a switching power source, by alternately turning on the first and second MOS transistors, a resonance current flows to a primary winding of a transformer, and an alternate current is transmitted to a secondary side. With respect to an alternate signal generated in a secondary winding, a gate voltage is applied so that the third MOS transistor and the fourth MOS transistor are conductive, respectively, while the polarity of the alternate signal is positive. Rectifying currents are flowed to a capacitor and a full-wave rectification is executed. Since a control signal for synchronous control is supplied from a signal source to control the first and second switching elements via transformers, a switching timing can be accurately coincided with an on/off timing of a synchronous rectifying device by a simple circuit. The efficiency of a current resonance type switching power source is thus improved.
摘要翻译： 在开关电源中，通过交替地接通第一和第二MOS晶体管，谐振电流流向变压器的初级绕组，并且将交流电流传输到次级侧。 对于在次级绕组中产生的替代信号，施加栅极电压，使得第三MOS晶体管和第四MOS晶体管分别导通，而交替信号的极性为正。 整流电流流向电容器，执行全波整流。 由于用于同步控制的控制信号从信号源提供，以经由变压器来控制第一和第二开关元件，因此可以通过简单的电路将切换定时精确地与同步整流装置的接通/断开定时一致。 因此，提高了电流谐振型开关电源的效率。
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