公开(公告)号：US06654259B2

公开(公告)日：2003-11-25

申请号：US10013370

申请日：2001-12-13

申请人： Wako Koshita ,  Katsumi Kobori

发明人： Wako Koshita ,  Katsumi Kobori

IPC分类号： H02M3335

CPC分类号： H02M3/3376 ,  H02M2007/4818 ,  Y02B70/1441

摘要： An object of the present invention is to create the optimum resonating condition to constantly decrease switching losses. A converter transformer capable of varying the leakage inductance is employed as a converter transformer, and a control circuit is arranged to detect an input voltage applied to a switching circuit and a voltage drop brought about in a current detecting resistor which allows a load current to flow. Thus, the leakage inductance of the converter transformer can be controlled.

公开(公告)号：US20080238862A1

公开(公告)日：2008-10-02

申请号：US12051320

申请日：2008-03-19

申请人： Katsumi Kobori

发明人： Katsumi Kobori

IPC分类号： G09G3/36

CPC分类号： H05B41/2828 ,  G09G3/3406 ,  G09G2320/041 ,  G09G2320/0633

摘要： A fluorescent lamp driving method drives a fluorescent lamp by using an alternating current driving signal generated by an inverter circuit using direct current power as an input. The driving signal is supplied from the inverter circuit to a load including the fluorescent lamp. The method includes the steps of, by using a sum current detecting circuit, detecting a current change in the signal, by using a control circuit, controlling the driving signal generated by the inverter circuit on the basis of the current change detected by the sum current detecting circuit, and controlling a current of the supplied signal to be constant, by using a temperature detecting circuit, detecting the temperature of the fluorescent lamp, and, by using a correction circuit, on the basis of the temperature of the fluorescent lamp detected by the temperature detecting circuit, correcting the controlling the current of the supplied signal to be constant.

摘要翻译： 荧光灯驱动方法通过使用由直流电源作为输入的逆变器电路产生的交流驱动信号来驱动荧光灯。 驱动信号从逆变器电路提供给包括荧光灯的负载。 该方法包括以下步骤：通过使用总和电流检测电路，通过使用控制电路来检测信号中的电流变化，基于由电流检测的电流变化来控制由逆变器电路产生的驱动信号 通过使用温度检测电路，检测荧光灯的温度，并且通过使用校正电路，基于由荧光灯检测到的荧光灯的温度，将检测电路的电流控制为恒定 所述温度检测电路将所提供的信号的电流控制为恒定。

公开(公告)号：US06836393B2

公开(公告)日：2004-12-28

申请号：US10093113

申请日：2002-03-07

申请人： Susumu Kaneko ,  Katsumi Kobori

发明人： Susumu Kaneko ,  Katsumi Kobori

IPC分类号： H02H700

CPC分类号： H02M7/5233

摘要： A power supply unit designed to control a power output and protect an overload easily, economically with little loss. A DC output which is generated by smoothing a rectified current of a rectifier circuit connected to an AC power source is subjected to switching by a switching circuit, creating an AC output which is supplied to a current resonance circuit. A peak detection circuit detects the peak voltage of a resonance voltage of this current resonance circuit. On the basis of a comparison output of the voltage comparator comparing the peak voltage to the reference voltage of a reference voltage source, the switching frequency of the switching circuit is controlled by a switching control circuit so that it is controlled to cause the peak voltage to match the reference voltage. In this manner, the output power is maintained on the constant level.

摘要翻译： 电源单元设计用于控制功率输出，并在经济上轻松，轻松地保护负载，损耗小。 通过平滑与AC电源连接的整流电路的整流电流而产生的直流输出由切换电路进行切换，产生供给到电流谐振电路的AC输出。 峰值检测电路检测该电流谐振电路的谐振电压的峰值电压。 基于电压比较器的比较输出，比较峰值电压与参考电压源的参考电压的比较，开关电路的开关频率由开关控制电路控制，以便控制其峰值电压 匹配参考电压。 以这种方式，输出功率保持在恒定水平。

公开(公告)号：US20080218663A1

公开(公告)日：2008-09-11

申请号：US12041332

申请日：2008-03-03

申请人： Katsumi Kobori

发明人： Katsumi Kobori

IPC分类号： G02F1/1335 ,  H05B41/14

CPC分类号： H05B41/2828 ,  H05B41/2853

摘要： A fluorescent tube driving method for driving a fluorescent tube on the basis of an alternating current driving signal generated by an inverter circuit that uses a direct current power supply produced by directly rectifying the voltage of a commercial power supply includes the steps of: detecting an input voltage supplied to the inverter circuit by a voltage detector; detecting an output current of the inverter circuit that drives the fluorescent tube on the basis of the alternating current driving signal by using an electric current detector; and controlling an alternating current driving signal generated by the inverter circuit on the basis of the output current of the inverter circuit, which is detected by the electric current detector, and an input voltage supplied to the inverter circuit, the input voltage being detected by the voltage detector, and suppressing a variation in the output current detected by the electric current detector.

摘要翻译： 一种荧光管驱动方法，用于根据由直流整流商用电源电压产生的直流电源的逆变器电路产生的交流驱动信号驱动荧光灯管，其特征在于：检测输入 通过电压检测器提供给逆变器电路的电压; 通过使用电流检测器检测基于交流驱动信号驱动荧光管的逆变器电路的输出电流; 并且根据由电流检测器检测到的逆变器电路的输出电流和提供给逆变器电路的输入电压来控制由逆变器电路产生的交流驱动信号，由 电压检测器，并且抑制由电流检测器检测的输出电流的变化。

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。

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

IPC分类号： H02M3/28 ,  H02M3/335 ,  H02M3/337

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。

公开(公告)号：US06816395B2

公开(公告)日：2004-11-09

申请号：US10221961

申请日：2003-02-19

申请人： Katsumi Kobori ,  Masami Okada

发明人： Katsumi Kobori ,  Masami Okada

IPC分类号： H02M324

CPC分类号： H02M3/28 ,  H02M3/33507 ,  H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

摘要： The present invention provides a switching power supply which includes a main rectifying and smoothing circuit (40) and a secondary rectifying and smoothing circuit (50) for rectifying and smoothing an output obtained at a secondary coil (22) of a converter transformer (20) whose primary coil (21) is supplied with a switching output from a switching element (30) which switches a direct input. A error detecting circuit (60), which is driven by a secondary rectified and smoothed output from the secondary rectifying and smoothing circuit (50), detects a main rectified and smoothed output from the main rectifying and smoothing circuit (40) to be supplied to loads so as to control the switching operation of the switching element (30) by the PWM controlling circuit (80) so that the main rectified and smoothed output is caused to be a predetermined state, and compares the voltage of the secondary rectified and smoothed output with the voltage of the main rectified and smoothed output so as to change the operation state of the PWM controlling circuit (80) to the standby mode in case the voltage of the secondary rectified and smoothed output declines to come below the voltage of the main rectified and smoothed output by a predetermined value.

摘要翻译： 本发明提供了一种开关电源，其包括主整流平滑电路（40）和用于对转换变压器（20）的次级线圈（22）获得的输出进行整流和平滑的二次整流和平滑电路（50） 其初级线圈（21）从切换直接输入的开关元件（30）提供开关输出。 由二次整流和平滑电路（50）的二次整流平滑输出驱动的误差检测电路（60）检测主整流平滑电路（40）的主整流平滑输出，供给至 负载，以便通过PWM控制电路（80）控制开关元件（30）的开关操作，使得主整流平滑输出为预定状态，并将二次整流和平滑输出的电压 与主整流平滑输出的电压，以便在二次整流平滑输出的电压下降到主要整流的电压的情况下，将PWM控制电路（80）的工作状态改变为待机模式 并使输出平滑化预定值。

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。