公开(公告)号：US06366480B2

公开(公告)日：2002-04-02

申请号：US09797963

申请日：2001-03-02

申请人： Tatsuya Hosotani ,  Hiroshi Takemura ,  Yasuji Okamoto

发明人： Tatsuya Hosotani ,  Hiroshi Takemura ,  Yasuji Okamoto

IPC分类号： H02M3335

CPC分类号： H02M3/3385

摘要： A switching power supply apparatus has a transformer having a primary winding and a secondary winding, a first switching element connected in series with the primary winding, a first control circuit for controlling the on-time of the first switching element whereby the output is controlled, and a rectification circuit for rectifying the output from the secondary winding, whereby input voltage is applied to the first winding when the first switching element is on and causes current to flow therein so that energy is stored in the transformer, and the energy stored in the transformer is released as electric current from the secondary winding when the first switching element is off, and the current is rectified in the rectification circuit to obtain an output. The rectification circuit comprises a rectification diode, a second switching element connected in parallel to the rectification diode, a second switching element drive winding provided in the transformer to generate a voltage which causes the second switching element to be on, and a second control circuit for turning on the second switching element by use of a voltage from the second switching element drive winding, and turning off the second switching element after a time determined by a predetermined time constant by use of a further switching element connected to the control terminal of the second switching element.

摘要翻译： 开关电源装置具有初级绕组和次级绕组的变压器，与初级绕组串联连接的第一开关元件，用于控制第一开关元件导通时间的第一控制电路，从而控制输出， 以及整流电路，用于整流来自次级绕组的输出，由此当第一开关元件接通时使输入电压施加到第一绕组，并且使电流流过其中，从而将能量存储在变压器中，并且存储在 当第一开关元件断开时，变压器作为来自次级绕组的电流释放，并且整流电路中的电流被整流以获得输出。 整流电路包括整流二极管，与整流二极管并联连接的第二开关元件，设置在变压器中以产生使第二开关元件导通的电压的第二开关元件驱动绕组，以及第二控制电路， 通过使用来自第二开关元件驱动绕组的电压来接通第二开关元件，并且通过使用连接到第二开关元件驱动绕组的控制端子的另一开关元件在由预定时间常数确定的时间之后关断第二开关元件 开关元件

公开(公告)号：US06469913B2

公开(公告)日：2002-10-22

申请号：US09957976

申请日：2001-09-21

申请人： Tatsuya Hosotani ,  Hiroshi Takemura ,  Yasuji Okamoto

发明人： Tatsuya Hosotani ,  Hiroshi Takemura ,  Yasuji Okamoto

IPC分类号： H02M3335

CPC分类号： H02M3/3382

摘要： A switching power supply device that can reduce switching loss to obtain high efficiency. Additionally, the number of components of control circuits and the cost of switching elements can be reduced, with a transformer made compact and lightweight. In this switching power supply device, one end of a series circuit comprising a primary winding of the transformer, an inductor, and a capacitor is connected to a junction of a first switching circuit and a second switching circuit. The other end of the series circuit is connected to an input power source. A secondary winding of the transformer is connected to a rectifying and smoothing circuit including a rectifying element. In addition, in order to perform a self-excited oscillation, there are arranged first and second control circuits. The first control circuit controls a time elapsing until the first switching circuit turns on after the generation of a voltage in a first driving winding of the transformer and a time elapsing until the first switching circuit turns off. Similarly, the second control circuit controls a time elapsing from the generation of a voltage in a second driving winding of the transformer to the turn-on of the second switching circuit and a time elapsing until the second switching circuit turns off.

摘要翻译： 一种可以减少开关损耗以获得高效率的开关电源装置。 此外，变压器制造紧凑且轻便，可以减少控制电路的部件数量和开关元件的成本。 在该开关电源装置中，包括变压器的初级绕组，电感器和电容器的串联电路的一端连接到第一开关电路和第二开关电路的结。 串联电路的另一端连接到输入电源。 变压器的次级绕组连接到包括整流元件的整流和平滑电路。 此外，为了进行自激振荡，布置有第一和第二控制电路。 第一控制电路控制直到第一开关电路在变压器的第一驱动绕组中产生电压之后导通并且经过时间直到第一开关电路断开为止的时间。 类似地，第二控制电路控制从变压器的第二驱动绕组中的电压的产生到第二开关电路的导通的时间和经过的时间直到第二开关电路断开。

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。

公开(公告)号：US06631079B2

公开(公告)日：2003-10-07

申请号：US10118502

申请日：2002-04-05

申请人： Tatsuya Hosotani ,  Hiroshi Takemura ,  Takahiro Minagawa

发明人： Tatsuya Hosotani ,  Hiroshi Takemura ,  Takahiro Minagawa

IPC分类号： H02M3335

CPC分类号： H02M3/3385 ,  H02M3/33561

摘要： A switching power supply apparatus comprises a transformer having primary winding and at least two secondary windings, a first switching element connected in series with the primary winding, a control circuit for controlling the output from the first switching element by control of the on-time thereof, a rectification circuit for rectifying at least two outputs from the secondary windings, an output detection circuit for detecting the output voltages and feeding back the output voltages as a control signal for control of the on-time to the control circuit. The output voltage detection circuit comprises a control signal formation section in which the control signal for the on-time is formed, corresponding to a voltage at a voltage comparison terminal, and plural voltage detectors connected between the at least two outputs of the secondary windings and the voltage comparison terminal, respectively.

公开(公告)号：US07821239B2

公开(公告)日：2010-10-26

申请号：US10541374

申请日：2004-11-08

申请人： Tatsuya Hosotani ,  Hiroshi Takemura

发明人： Tatsuya Hosotani ,  Hiroshi Takemura

IPC分类号： G05F1/577 ,  H02M3/335

CPC分类号： H02M3/33576 ,  H02M3/33561 ,  H02M3/33569

摘要： A switching power-supply unit uses a time when a transformer voltage Vt inverts due to a rectifier diode (Ds1) entering a non-conducting state as a trigger, and a first switching control circuit (CNT1) turns on a first switching element (Q1) after a predetermined delay time passes. A second switching control circuit (CNT2) turns on a second switching element (Q2) using a time when the transformer voltage Vt inverts due to turning off of the first switching element (Q1) as a trigger. A third switching control circuit (CNT3) turns on a third switching element (Q3) using turning off of the second switching element (Q2) as a trigger. The first switching control circuit (CNT1) determines a period ton1 of the first switching element (Q1) such that a first output voltage Vo1 is set to a predetermined value. The second switching control circuit (CNT2) determines an ON-period ton2 of the second switching element (Q2) such that a second output voltage Vo2 is set to a predetermined value. The third switching control circuit (CNT3) determines an ON-period ton3 of the third switching element (Q3) such that a third output voltage Vo3 is set to a predetermined value.

摘要翻译： 开关电源单元使用变压器电压Vt由于整流二极管（Ds1）作为触发而进入非导通状态而反转的时间，第一开关控制电路（CNT1）导通第一开关元件（Q1 ）经过预定的延迟时间。 第二开关控制电路（CNT2）使用当变压器电压Vt由于第一开关元件（Q1）的断开而被翻转作为触发时的时间来接通第二开关元件（Q2）。 第三开关控制电路（CNT3）使用第二开关元件（Q2）的截止作为触发来接通第三开关元件（Q3）。 第一开关控制电路（CNT1）确定第一开关元件（Q1）的周期ton1，使得第一输出电压Vo1被设定为预定值。 第二开关控制电路（CNT2）确定第二开关元件（Q2）的导通周期ton2，使得第二输出电压Vo2被设定为预定值。 第三开关控制电路（CNT3）确定第三开关元件（Q3）的导通周期ton3，使得第三输出电压Vo3被设定为预定值。

公开(公告)号：US06690586B2

公开(公告)日：2004-02-10

申请号：US10152777

申请日：2002-05-23

申请人： Tatsuya Hosotani ,  Hiroshi Takemura

发明人： Tatsuya Hosotani ,  Hiroshi Takemura

IPC分类号： H02M3335

CPC分类号： H02M1/36 ,  H02M3/3382

摘要： A self-excited oscillation type switching power source device is constructed such that when a power source switch is turned on, and the voltage of an input power source increases, the voltage at a point a is increased. When the voltage exceeds a predetermined voltage, a first transistor is turned on, and a second transistor is turned off. Then, a first switching element, when a starting voltage is applied to the control terminal thereof, is turned on, and voltage is developed in a first drive winding. This voltage is fed back to the point a via a feedback circuit. As a result, the transistor is accelerated to reach the on-state. The second transistor is accelerated to reach the off-state. As a result, the first switching element is rapidly turned on, and the oscillation is started.

摘要翻译： 自激式振荡型开关电源装置被构造成使得当电源开关导通并且输入电源的电压增加时，点a处的电压增加。 当电压超过预定电压时，第一晶体管导通，第二晶体管截止。 然后，当启动电压施加到其控制端时，第一开关元件导通，并且在第一驱动绕组中产生电压。 该电压通过反馈电路反馈到点a。 结果，晶体管被加速以达到导通状态。 第二个晶体管被加速到达截止状态。 结果，第一开关元件快速导通，并且开始振荡。

公开(公告)号：US06559750B2

公开(公告)日：2003-05-06

申请号：US09915116

申请日：2001-07-25

申请人： Takanori Koyama ,  Tatsuya Hosotani ,  Hiroshi Takemura

发明人： Takanori Koyama ,  Tatsuya Hosotani ,  Hiroshi Takemura

IPC分类号： H01F500

CPC分类号： H01F27/2823

摘要： A transformer comprises first and second flat coils stacked with each other. Each of first and second flat coils comprises a conductive wire which is wound in a flat spiral shape having a through hole at a center thereof such that the conductive wire has an inner end and an outer end at an inner periphery and an outer periphery of the spiral shape, respectively. The inner end of the first flat coil passes through the through hole of the second flat coil, thus reducing the overall thickness of the transformer because both inner ends pass over only one flat coil.

公开(公告)号：US06498735B2

公开(公告)日：2002-12-24

申请号：US10021252

申请日：2001-12-19

申请人： Tatsuya Hosotani ,  Hiroshi Takemura

发明人： Tatsuya Hosotani ,  Hiroshi Takemura

IPC分类号： H02M3335

CPC分类号： H02M3/3385 ,  H02M2001/0032 ,  Y02B70/16

摘要： A switching power supply unit includes first and second switching circuits which alternately turn first and second switching elements on and off with an intermediate period in which both are turned off, and energy is stored in a primary winding of a transformer during an ON period of the first switching element and the energy is discharged from a secondary winding of the transformer during an OFF period of the first switching element. A control circuit includes an OFF period extending circuit connected to a control terminal of the first switching element, such that a transistor remains turned on for a desired period even after the energy has been discharged from the secondary winding, extending the OFF period of the first switching element for the desired period. In a light load operation, a phototransistor in the second control circuit is turned on so that the ON period of the second switching element will be shorter than the time required to discharge the energy from the secondary winding.

公开(公告)号：US07113411B2

公开(公告)日：2006-09-26

申请号：US10541521

申请日：2004-10-29

申请人： Tatsuya Hosotani ,  Hiroshi Takemura

发明人： Tatsuya Hosotani ,  Hiroshi Takemura

IPC分类号： H02M3/335 ,  H02M7/537

CPC分类号： H02M3/338 ,  H02M3/33569 ,  H02M3/3385

摘要： A switching power supply apparatus includes first and second switch circuits (S1) and (S2) including switch devices (Q1) and (Q2), diodes (D1) and (D2), and capacitors (Cds1) and (Cds2), and a transformer (T). A first inductor (Lr) is connected in series with a primary winding (Lp) of the transformer (T), and a second inductor (Li) is arranged so that a voltage of a third capacitor (Ca) is applied during an on-period of the first switch circuit (S1). A diode (Di) preventing a reverse current from flowing in the second inductor (Li), and a capacitor (Ci) that is charged by excitation energy stored in the second inductor (Li) and that applies a voltage to the primary winding (Lp) during the on-period of the first switch circuit (S1) are further provided. A capacitor (Cr) is further provided so as to define a closed loop together with the inductor (Lr), the primary winding (Lp), and the second switch circuit (S2).

摘要翻译： 开关电源装置包括包括开关装置（Q1）和（Q2），二极管（D1）和（D2）以及电容器（Cds1）的第一和第二开关电路（S1）和（S2） 和（Cds 2）和变压器（T）。 第一电感器（Lr）与变压器（T）的初级绕组（Lp）串联连接，并且第二电感器（Li）被布置成使得在开关状态期间施加第三电容器（Ca）的电压， 第一开关电路的周期（S 1）。 防止反向电流在第二电感器（Li）中流动的二极管（Di）和由存储在第二电感器（Li）中的激发能量充电并且向初级绕组（Lp）施加电压的电容器（Ci） ）在第一开关电路（S1）的导通期间进一步提供。 进一步设置电容器（Cr），以便与电感器（Lr），初级绕组（Lp）和第二开关电路（S2）一起形成闭环。

公开(公告)号：US20060176715A1

公开(公告)日：2006-08-10

申请号：US10547775

申请日：2004-11-30

申请人： Tatsuya Hosotani ,  Hiroshi Takemura

发明人： Tatsuya Hosotani ,  Hiroshi Takemura

IPC分类号： H02M3/335

CPC分类号： H02M3/33569

摘要： A switching power supply apparatus includes a first inductor that is serially connected to a primary winding of a transformer, and a second inductor that is arranged so as to apply a voltage of a capacitor with sine waves obtained by rectifying an AC input voltage for an on-period of a first switching circuit. A diode for preventing the inverse current to the second inductor and a capacitor that is charged by excitation energy charged to the second inductor and applies a voltage to the primary winding for on-period of the first switching circuit. Further, a capacitor is arranged so that the inductor, the primary winding, and a second switching circuit define a closed loop. Switching control circuits control the on-period of a first switching element to control an output voltage Vo, and further control an input voltage Vi by controlling the on-period of a second switching element.

摘要翻译： 开关电源装置包括串联连接到变压器的初级绕组的第一电感器和第二电感器，该第一电感器被布置成将电容器的电压施加到通过对AC输入电压进行整流得到的正弦波 第一开关电路的周期。 一种用于防止对第二电感器的反向电流的二极管和由第二电感器充电的激发能量充电的电容器，并且在第一开关电路的周期上向初级绕组施加电压。 此外，电容器被布置成使得电感器，初级绕组和第二开关电路限定闭环。 开关控制电路控制第一开关元件的接通周期以控制输出电压Vo，并且通过控制第二开关元件的导通周期来进一步控制输入电压Vi。