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1. 发明授权

US06590790B2 Switching power supply device 有权
公开(公告)号：US06590790B2
公开(公告)日：2003-07-08
申请号：US09977914
申请日：2001-10-09
申请人： Tatsuya Hosotani , Tomohiro Yamada , Kentaro Takahashi
发明人： Tatsuya Hosotani , Tomohiro Yamada , Kentaro Takahashi
IPC分类号： H02M3335
CPC分类号： H02M3/338 , H02M3/33569
摘要： A switching power supply device in which a transformer, a first switch circuit, and an input power source are connected in series. A series circuit formed of a second switch circuit and a capacitor is connected to one end of the first switch circuit. The transformer has a driving winding which is wound in the same direction as that of the primary winding of the transformer. A capacitive impedance element including a series circuit formed of a capacitor and an inductive ferrite bead, is connected between the termination of the driving winding and the input power source. The switching power supply device uses a less capacitive impedance and thus provides higher radiation noise reduction performance, thereby preventing switching devices from being damaged due to high voltage increase rate of the switching devices.

2. 发明授权

US07778048B2 Switching power supply apparatus 有权
标题翻译：开关电源装置
公开(公告)号：US07778048B2
公开(公告)日：2010-08-17
申请号：US11856281
申请日：2007-09-17
申请人： Tatsuya Hosotani
发明人： Tatsuya Hosotani
IPC分类号： H02M3/335
CPC分类号： H02M3/33569
摘要： In a switching power supply apparatus, an inductor, a transformer, a first switching circuit, a second switching circuit, and a capacitor are connected to each other so that a first switching element and a second switching element can be alternately turned on and off, an output can be obtained from a secondary winding of the transformer, and an output voltage can be controlled by controlling the ON period of the first switching element. The secondary winding of the transformer is connected to a first rectifying and smoothing circuit. A first control circuit is configured to operate using a DC voltage supplied from a second rectifying and smoothing circuit. After the second switching element has been turned on, the second switching element is forcefully turned off at a predetermined time set by a turn-off circuit included in a second control circuit that operates using an AC voltage.
摘要翻译：在开关电源装置中，电感器，变压器，第一开关电路，第二开关电路和电容器彼此连接，使得第一开关元件和第二开关元件可以交替地导通和截止，可以从变压器的次级绕组获得输出，并且可以通过控制第一开关元件的接通时段来控制输出电压。变压器的次级绕组连接到第一整流和平滑电路。第一控制电路被配置为使用从第二整流和平滑电路提供的DC电压进行操作。在第二开关元件接通之后，第二开关元件在由使用AC电压工作的第二控制电路中包括的关断电路设置的预定时间被强制关断。

3. 发明申请

US20090316444A1 SWITCHING POWER SUPPLY DEVICE 有权
标题翻译：切换电源设备
公开(公告)号：US20090316444A1
公开(公告)日：2009-12-24
申请号：US12551584
申请日：2009-09-01
申请人： Naoki Yamaguchi , Tatsuya Hosotani , Takuji Yokawa
发明人： Naoki Yamaguchi , Tatsuya Hosotani , Takuji Yokawa
IPC分类号： H02M3/335
CPC分类号： H02M3/3353
摘要： In a switching power supply device, a first switch element, which defines a main switch element of a DC-DC converter, and a third switch element, which defines a switch element of a power-factor correcting circuit, are controlled such that turn-on timings are synchronized while on-period control is independently performed to thereby prevent an increase in switching frequency and prevent noise by eliminating intermittent oscillation. Thus, it is possible to prevent intermittent oscillation control due to an increase in switching frequency of the first switch element under a light load state or a no load state. This eliminates problems of the frequency of intermittent oscillation that falls within an audible frequency range causing noise and increasing ripple voltage.
摘要翻译：在开关电源装置中，限定了DC-DC转换器的主开关元件的第一开关元件和限定功率因数校正电路的开关元件的第三开关元件被控制，在同时进行定时，同时独立执行周期性控制，从而防止开关频率的增加并且通过消除间歇振荡来防止噪声。因此，可以防止在轻负载状态或空载状态下由于第一开关元件的开关频率的增加而产生的间歇振荡控制。这消除了在可听到的频率范围内产生噪声和增加纹波电压的间歇振荡频率的问题。

4. 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。

5. 发明授权

US06631079B2 Switching power supply apparatus having plural outputs and plural output voltage detection 有权
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.

6. 发明授权

US06320763B2 Switching power supply unit 有权
公开(公告)号：US06320763B2
公开(公告)日：2001-11-20
申请号：US09753593
申请日：2001-01-03
申请人： Tatsuya Hosotani
发明人： Tatsuya Hosotani
IPC分类号： H02M3335
CPC分类号： H02M3/3382 , H02M3/33569 , H02M2001/0025 , H02M2001/0032 , H02M2001/0058 , Y02B70/1491 , Y02B70/16
摘要： A switching power supply unit comprising: a transformer having a primary winding and a secondary winding, a capacitor coupled to the transformer, a first switching circuit connected in series with a series circuit of the primary winding and an input power source, the first switching circuit comprising a parallel circuit comprising a first switching element, a first diode and a first capacitor, a second switching circuit connected in parallel with the primary winding, the second switching circuit comprising a parallel circuit comprising a second switching element, a second diode and a second capacitor, first and second switching controlling circuits connected to the first and second switching circuits, respectively for controlling the first and second switching elements so as to turn on/off alternately with a period in which the first and second switching elements turn off being interposed therebetween, a rectifying and smoothing circuit connected to the secondary winding; and voltage detection and voltage reduction circuit having a control signal input terminal and connected to the rectifying and smoothing circuit, the voltage detection and voltage reduction circuit detecting an output voltage of the rectifying and smoothing circuit and outputting a feedback signal to the first switching controlling circuit such that an output voltage of the rectifying and smoothing circuit is stabilized at one of a first voltage and a second voltage lower than the first voltage based on a signal applied to the control signal input terminal.

7. 发明授权

US08837174B2 Switching power-supply apparatus including switching elements having a low threshold voltage 有权
标题翻译：开关电源设备包括具有低阈值电压的开关元件
公开(公告)号：US08837174B2
公开(公告)日：2014-09-16
申请号：US13009892
申请日：2011-01-20
申请人： Tatsuya Hosotani
发明人： Tatsuya Hosotani
IPC分类号： H02M3/335 , H02M1/00
CPC分类号： H02M3/33592 , H02M3/33584 , H02M2001/0032 , Y02B70/1475 , Y02B70/16
摘要： In a switching power-supply apparatus, a primary-side power converter circuit includes a half bridge system and a synchronous rectifier circuit is provided as a rectifier circuit of a secondary-side power converter circuit. An on time ratio of the on time of a first switching element to the on time of a second switching element is controlled so as to provide an operation mode in which energy is regenerated from the secondary side to the primary side when the load is light.
摘要翻译：在开关电源装置中，初级侧电力转换电路包括半桥系统，同步整流电路作为二次侧电力变换电路的整流电路。控制第一开关元件的接通时间与第二开关元件的导通时间的接通时间比，以便提供当负载较轻时从次级侧到初级侧再生能量的操作模式。

8. 发明授权

US08576584B2 Switching control circuit and switching power supply device 有权
标题翻译：开关控制电路和开关电源装置
公开(公告)号：US08576584B2
公开(公告)日：2013-11-05
申请号：US13036191
申请日：2011-02-28
申请人： Tatsuya Hosotani
发明人： Tatsuya Hosotani
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M1/32 , H02M2001/0032 , Y02B70/16
摘要： A switching control IC outputs a rectangular wave signal from an output terminal thereof to a driving circuit. A feedback circuit compares a value of a divided voltage of a voltage across output terminals of a switching power supply device with a reference voltage, generates a feedback signal, and inputs the feedback signal into a feedback terminal of the switching control IC. A capacitor and a Zener diode are connected between the feedback terminal and a ground terminal. The Zener diode is selectively connected, and a voltage at the feedback terminal is changed in accordance with the presence of the Zener diode. A voltage at the feedback terminal is detected, and one of a latch method and a hiccup method is selected as a method for an overcurrent protection operation in accordance with the detected voltage.
摘要翻译：开关控制IC从其输出端子向驱动电路输出矩形波信号。反馈电路将开关电源装置的输出端子间的电压的分压值与参考电压进行比较，生成反馈信号，并将反馈信号输入到开关控制IC的反馈端子。电容器和齐纳二极管连接在反馈端子和接地端子之间。选择性地连接齐纳二极管，并且根据齐纳二极管的存在来改变反馈端的电压。检测反馈端子的电压，根据检测到的电压，选择锁存方法和打嗝方法之一作为过电流保护动作的方法。

9. 发明授权

US08274800B2 DC-DC switching power supply with power factor correction 有权
标题翻译： DC-DC开关电源，功率因数校正
公开(公告)号：US08274800B2
公开(公告)日：2012-09-25
申请号：US12647562
申请日：2009-12-28
申请人： Yoshiyuki Uno , Tomokuni Tokugawa , Tatsuya Hosotani
发明人： Yoshiyuki Uno , Tomokuni Tokugawa , Tatsuya Hosotani
IPC分类号： H02M3/335
CPC分类号： H02M1/4225 , H02M3/28 , H02M2001/0006 , H02M2001/008 , Y02B70/126
摘要： A digital signal processing circuit which performs average current control is disposed on a secondary side of a transformer of an isolated DC-DC converter, and a switching control signal output from the digital signal processing circuit is transmitted to a switching element included in a power factor correction converter through an isolated drive circuit. The digital signal processing circuit obtains an average value of currents supplied to an inductor in accordance with a voltage output from a bias winding of the inductor or an output from a secondary side of a current transformer which detects a drain current of the switching element. Furthermore, the average value of the currents corresponds to a waveform (full-wave rectification sine wave) of an input voltage Vi.
摘要翻译：执行平均电流控制的数字信号处理电路设置在隔离DC-DC转换器的变压器的次级侧，并且从数字信号处理电路输出的开关控制信号被发送到功率因数中包括的开关元件校正转换器通过隔离驱动电路。数字信号处理电路根据从电感器的偏置绕组输出的电压或检测开关元件的漏极电流的电流互感器的次级侧的输出，获得提供给电感器的电流的平均值。此外，电流的平均值对应于输入电压Vi的波形（全波整流正弦波）。

10. 发明授权

US08027177B2 Isolated switching power supply apparatus 有权
标题翻译：隔离开关电源装置
公开(公告)号：US08027177B2
公开(公告)日：2011-09-27
申请号：US12980433
申请日：2010-12-29
申请人： Tatsuya Hosotani
发明人： Tatsuya Hosotani
IPC分类号： H02M1/12
CPC分类号： H02M1/126 , H02M1/14 , H02M3/33569
摘要： A transformer includes a first secondary winding, a second secondary winding, and a third secondary winding. The second secondary winding and the third secondary winding are wound to include the same number of turns and to have opposite magnetic polarities. A low-pass filter includes a second inductor defined by a leakage inductance of the second secondary winding connected in series with the second secondary winding, a second inductor defined by a leakage inductance of the third secondary winding connected in series with the third secondary winding, and a second capacitor. An output voltage is output from an output terminal of the low-pass filter.
摘要翻译：变压器包括第一次级绕组，第二次级绕组和第三次级绕组。卷绕第二次级绕组和第三次级绕组包括相同的匝数并具有相反的磁极性。低通滤波器包括由与第二次级绕组串联连接的第二次级绕组的漏电感定义的第二电感器，由与第三次级绕组串联连接的第三次级绕组的漏电感限定的第二电感器，和第二电容器。输出电压从低通滤波器的输出端输出。

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