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公开(公告)号：US07166992B2
公开(公告)日：2007-01-23
申请号：US11338711
申请日：2006-01-25
申请人： Ryotaro Kudo , Kyoichi Hosokawa , Koji Tateno
发明人： Ryotaro Kudo , Kyoichi Hosokawa , Koji Tateno
IPC分类号： G05F1/46
CPC分类号： H02M3/1588 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
摘要： This invention provides a semiconductor integrated circuit for drive and a module for building a synchronous rectifier type switching regulator that is able to correctly detect and prevent a reverse current flowing through a coil (inductance element) during light load using a comparator and has a good power efficiency. In a synchronous rectifier type switching regulator including a reverse current detection circuit that is able to detect a state in which a reverse current flows through the inductance element (coil) and a reverse current prevention function, a switching element for synchronous rectification is formed by a plurality of parallel transistors and the transistors are controlled so that a part of them are not driven during light load.
摘要翻译： 本发明提供一种用于驱动的半导体集成电路和用于构建同步整流器型开关调节器的模块，其能够在使用比较器的轻负载期间正确地检测和防止流过线圈（电感元件）的反向电流，并具有良好的功率 效率。 在具有能够检测反向电流流过电感元件（线圈）的状态的反向电流检测电路和反向电流防止功能的同步整流型开关调节器中，通过以下方式形成用于同步整流的开关元件： 多个并联晶体管和晶体管被控制，使得它们的一部分在轻负载期间不被驱动。
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22.发明授权公开(公告)号：US07158392B2
公开(公告)日：2007-01-02
申请号：US10727601
申请日：2003-12-05
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M3/33592 , H02M2001/0048 , Y02B70/1475 , Y02B70/1491
摘要： It is aimed at decreasing losses not only in a synchronous rectifier circuit provided at a secondary side of a DC-DC converter, but also in a full-bridge switching circuit provided at a primary side thereof. The DC-DC converter comprises a transformer for voltage conversion, a synchronous rectifier circuit at the secondary side, and a full-bridge switching circuit at the primary side. The DC-DC converter performs synchronous rectifier control which uses switch transistors to change paths of currents flowing through the secondary coil in synchronization with switching operations at the primary side. The DC-DC converter detects currents flowing through a load at the secondary side, primary-side currents varying with the load currents, or primary-side input voltages to dynamically control off-timings of a synchronous rectification transistor at the secondary side. In addition, the DC-DC converter detects primary-side input voltages and currents flowing through the secondary-side load to dynamically control on-timings of a transistor in the primary-side switching circuit.
摘要翻译： 其目的在于，不仅在设置在DC-DC转换器的次级侧的同步整流电路中，而且在设置在其一次侧的全桥开关电路中减少损耗。 DC-DC转换器包括用于电压转换的变压器，次级侧的同步整流电路和初级侧的全桥开关电路。 DC-DC转换器执行同步整流器控制，其使用开关晶体管来同步初级侧的开关操作来改变流过次级线圈的电流的路径。 DC-DC转换器检测流过次级侧的负载的电流，初级侧电流随负载电流变化或初级侧输入电压，以动态地控制次级侧的同步整流晶体管的停止时序。 此外，DC-DC转换器检测初级侧输入电压和流过次级侧负载的电流，以动态地控制初级侧开关电路中的晶体管的接通时序。
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23.发明授权Voltage clamp circuit, a switching power supply device, a semiconductor integrated circuit device, and a voltage level conversion circuit 有权电压钳位电路，开关电源装置，半导体集成电路装置和电压电平转换电路公开(公告)号：US07898232B2
公开(公告)日：2011-03-01
申请号：US12534756
申请日：2009-08-03
申请人： Ryotaro Kudo , Koji Tateno
发明人： Ryotaro Kudo , Koji Tateno
摘要： The present invention provides a voltage clamping circuit which is operated in a stable manner with the simple constitution and a switching power source device which enables a high-speed operation. In a switching power source device, one of source/drain routes is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current which is made to flow in an inductor such that the output voltage assumes a predetermined voltage and a second switching element which clamps an reverse electromotive voltage generated in the inductor when the first switching element is turned off to a predetermined potential. In such a switching power source device, the voltage clamping circuit is used in a feedback route for setting a dead time.
摘要翻译： 本发明提供一种以简单结构稳定运行的电压钳位电路和能够进行高速运行的开关电源装置。 在开关电源装置中，源/漏路径中的一个连接到输入电压被提供给的输入端，要限制的预定电压被提供给栅极，并且使用在另一个之间提供电流源的MOSFET 源/漏路径和电路的接地电位，从另一个源/漏路径获得对应于输入电压的钳位输出电压。 开关电源装置还包括第一开关元件，其控制使得在电感器中流动的电流，使得输出电压呈现预定电压;以及第二开关元件，其在第一开关元件中钳位在电感器中产生的反向电动势电压 开关元件被切断到预定电位。 在这种开关电源装置中，钳位电路用于设置死区时间的反馈路径。
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24.发明授权Voltage clamp circuit, a switching power supply device, a semiconductor integrated circuit device, and a voltage level conversion circuit 有权电压钳位电路，开关电源装置，半导体集成电路装置和电压电平转换电路公开(公告)号：US07663354B2
公开(公告)日：2010-02-16
申请号：US10586687
申请日：2005-01-14
申请人： Ryotaro Kudo , Koji Tateno
发明人： Ryotaro Kudo , Koji Tateno
摘要： The present invention provides a voltage clamping circuit which is operated in a stable manner with the simple constitution and a switching power source device which enables a high-speed operation. In a switching power source device, one of source/drain routes is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current which is made to flow in an inductor such that the output voltage assumes a predetermined voltage and a second switching element which clamps an reverse electromotive voltage generated in the inductor when the first switching element is turned off to a predetermined potential. In such a switching power source device, the voltage clamping circuit is used in a feedback route for setting a dead time.
摘要翻译： 本发明提供一种以简单结构稳定运行的电压钳位电路和能够进行高速运行的开关电源装置。 在开关电源装置中，源/漏路径中的一个连接到输入电压被提供给的输入端，要限制的预定电压被提供给栅极，并且使用在另一个之间提供电流源的MOSFET 源/漏路径和电路的接地电位，从另一个源/漏路径获得对应于输入电压的钳位输出电压。 开关电源装置还包括第一开关元件，其控制使得在电感器中流动的电流，使得输出电压呈现预定电压;以及第二开关元件，其在第一开关元件中钳位在电感器中产生的反向电动势电压 开关元件被切断到预定电位。 在这种开关电源装置中，钳位电路用于设置死区时间的反馈路径。
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25.发明授权Voltage clamp circuit, a switching power supply device, a semiconductor integrated circuit device, and a voltage level conversion circuit 有权电压钳位电路，开关电源装置，半导体集成电路装置和电压电平转换电路公开(公告)号：US08638078B2
公开(公告)日：2014-01-28
申请号：US13593368
申请日：2012-08-23
申请人： Ryotaro Kudo , Koji Tateno
发明人： Ryotaro Kudo , Koji Tateno
IPC分类号： G05F1/00
摘要： A voltage clamping circuit which operates in a stable manner and a switching power source device which enables high-speed operation. In the switching power source device, one source/drain route is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current in an inductor and a second switching element which clamps a reverse electromotive voltage generated in the inductor. The voltage clamping circuit is used in a feedback route for setting a dead time.
摘要翻译： 稳定工作的钳位电路和能高速运行的开关电源装置。 在开关电源装置中，一个源/漏路径被连接到输入电压被提供给的输入端，将要限制的预定电压提供给栅极，并且使用在另一源之间提供电流源的MOSFET /漏极路径和电路的接地电位，从另一个源极/漏极路径获得对应于输入电压的钳位输出电压。 开关电源装置还包括控制电感器中的电流的第一开关元件和钳位电感器中产生的反向电动势的第二开关元件。 电压钳位电路用于设置死区时间的反馈路径。
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26.发明申请Voltage Clamp Circuit, a Switching Power Supply Device, a Semiconductor Integrated Circuit Device, and a Voltage Level Conversion Circuit 有权电压钳位电路，开关电源装置，半导体集成电路装置和电压电平转换电路公开(公告)号：US20080224676A1
公开(公告)日：2008-09-18
申请号：US10586687
申请日：2005-01-14
申请人： Ryotaro Kudo , Koji Tateno
发明人： Ryotaro Kudo , Koji Tateno
摘要： The present invention provides a voltage clamping circuit which is operated in a stable manner with the simple constitution and a switching power source device which enables a high-speed operation. In a switching power source device, one of source/drain routes is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current which is made to flow in an inductor such that the output voltage assumes a predetermined voltage and a second switching element which clamps an reverse electromotive voltage generated in the inductor when the first switching element is turned off to a predetermined potential. In such a switching power source device, the voltage clamping circuit is used in a feedback route for setting a dead time.
摘要翻译： 本发明提供一种以简单结构稳定运行的电压钳位电路和能够进行高速运行的开关电源装置。 在开关电源装置中，源/漏路径中的一个连接到输入电压被提供给的输入端，要限制的预定电压被提供给栅极，并且使用在另一个之间提供电流源的MOSFET 源/漏路径和电路的接地电位，从另一个源/漏路径获得对应于输入电压的钳位输出电压。 开关电源装置还包括第一开关元件，其控制使得在电感器中流动的电流，使得输出电压呈现预定电压;以及第二开关元件，其在第一开关元件中钳位在电感器中产生的反向电动势电压 开关元件被切断到预定电位。 在这种开关电源装置中，钳位电路用于设置死区时间的反馈路径。
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公开(公告)号：US07138786B2
公开(公告)日：2006-11-21
申请号：US11287293
申请日：2005-11-28
申请人： Takuya Ishigaki , Takashi Sase , Akihiko Kanouda , Koji Tateno , Ryotaro Kudo
发明人： Takuya Ishigaki , Takashi Sase , Akihiko Kanouda , Koji Tateno , Ryotaro Kudo
IPC分类号： G05F1/613
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A power supply driver circuit with low power losses and desired response characteristics with respect to changes in output and its miniaturization is provided. In a driver IC constituting a switched-mode power supply equipment controlling the switching, by pulse width modulation, of first and second power transistors passing a current in a coil, and outputting a voltage bucked or boosted from an input voltage, current sensing with desired responsiveness is enabled by providing a switching transistor between an inverted input terminal and a non-inverted input terminal of an operational amplifier, preventing, while the second power transistor is ON, the generation of a potential which is undefined when first power transistor is ON, i.e. when the second power transistor is OFF, and maintaining a node potential in a state in which the potential is well defined.
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公开(公告)号：US08680830B2
公开(公告)日：2014-03-25
申请号：US13229781
申请日：2011-09-12
申请人： Ryotaro Kudo , Tomoaki Uno , Koji Tateno , Hideo Ishii , Kazuyuki Umezu , Koji Saikusa
发明人： Ryotaro Kudo , Tomoaki Uno , Koji Tateno , Hideo Ishii , Kazuyuki Umezu , Koji Saikusa
IPC分类号： G05F1/00
CPC分类号： H02M3/158 , G06F1/26 , H02M3/1584 , H02M2003/1586
摘要： Miniaturization of a multiphase type power supply device can be achieved. A power supply control unit in which, for example, a microcontroller unit, a memory unit and an analog controller unit are formed over a single chip, a plurality of PWM-equipped drive units, and a plurality of inductors configure a multiphase power supply. The microcontroller unit outputs clock signals each having a frequency and a phase defined based on a program on the memory unit to the respective PWM-equipped drive units. The analog controller unit detects a difference between a voltage value of a load and a target voltage value acquired via a serial interface and outputs an error amp signal therefrom. Each of the PWM-equipped drive units drives each inductor by a peak current control system using the clock signal and the error amp signal.
摘要翻译： 可以实现多相电源装置的小型化。 电源控制单元，其中例如在单个芯片上形成微控制器单元，存储单元和模拟控制器单元，多个配备PWM的驱动单元和多个电感器构成多相电源。 微控制器单元输出每个具有基于存储器单元上的程序定义的频率和相位到相应的配备有PWM的驱动单元的时钟信号。 模拟控制器单元检测负载的电压值与通过串行接口获取的目标电压值之间的差值，并输出误差放大器信号。 每个配备PWM的驱动单元通过使用时钟信号和误差放大器信号的峰值电流控制系统驱动每个电感器。
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29.发明授权Voltage clamp circuit, a switching power supply device, a semiconductor integrated circuit device, and a voltage level conversion circuit 有权电压钳位电路，开关电源装置，半导体集成电路装置和电压电平转换电路公开(公告)号：US08373484B2
公开(公告)日：2013-02-12
申请号：US13019833
申请日：2011-02-02
申请人： Ryotaro Kudo , Koji Tateno
发明人： Ryotaro Kudo , Koji Tateno
摘要： The present invention provides a voltage clamping circuit which is operated in a stable manner with the simple constitution and a switching power source device which enables a high-speed operation. In a switching power source device, one of source/drain routes is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current which is made to flow in an inductor such that the output voltage assumes a predetermined voltage and a second switching element which clamps an reverse electromotive voltage generated in the inductor when the first switching element is turned off to a predetermined potential. In such a switching power source device, the voltage clamping circuit is used in a feedback route for setting a dead time.
摘要翻译： 本发明提供一种以简单结构稳定运行的电压钳位电路和能够进行高速运行的开关电源装置。 在开关电源装置中，源/漏路径中的一个连接到输入电压被提供给的输入端，要限制的预定电压被提供给栅极，并且使用在另一个之间提供电流源的MOSFET 源/漏路径和电路的接地电位，从另一个源/漏路径获得对应于输入电压的钳位输出电压。 开关电源装置还包括第一开关元件，其控制使得在电感器中流动的电流，使得输出电压呈现预定电压;以及第二开关元件，其在第一开关元件中钳位在电感器中产生的反向电动势电压 开关元件被切断到预定电位。 在这种开关电源装置中，钳位电路用于设置死区时间的反馈路径。
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30.发明申请Voltage Clamp Circuit, A Switching Power Supply Device, A Semiconductor Integrated Circuit Device, and A Voltage Level Conversion Circuit 有权电压钳位电路，开关电源装置，A半导体集成电路装置和A电压电平转换电路公开(公告)号：US20090295351A1
公开(公告)日：2009-12-03
申请号：US12534756
申请日：2009-08-03
申请人： Ryotaro Kudo , Koji Tateno
发明人： Ryotaro Kudo , Koji Tateno
摘要： The present invention provides a voltage clamping circuit which is operated in a stable manner with the simple constitution and a switching power source device which enables a high-speed operation. In a switching power source device, one of source/drain routes is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current which is made to flow in an inductor such that the output voltage assumes a predetermined voltage and a second switching element which clamps an reverse electromotive voltage generated in the inductor when the first switching element is turned off to a predetermined potential. In such a switching power source device, the voltage clamping circuit is used in a feedback route for setting a dead time.
摘要翻译： 本发明提供一种以简单结构稳定运行的电压钳位电路和能够进行高速运行的开关电源装置。 在开关电源装置中，源/漏路径中的一个连接到输入电压被提供给的输入端，要限制的预定电压被提供给栅极，并且使用在另一个之间提供电流源的MOSFET 源/漏路径和电路的接地电位，从另一个源/漏路径获得对应于输入电压的钳位输出电压。 开关电源装置还包括第一开关元件，其控制使得在电感器中流动的电流，使得输出电压呈现预定电压;以及第二开关元件，其在第一开关元件中钳位在电感器中产生的反向电动势电压 开关元件被切断到预定电位。 在这种开关电源装置中，钳位电路用于设置死区时间的反馈路径。
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