公开(公告)号：US20090267587A1

公开(公告)日：2009-10-29

申请号：US12487474

申请日：2009-06-18

申请人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

发明人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

IPC分类号： G05F3/16

CPC分类号： H02M3/1588 ,  H01L2224/0603 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2924/13091 ,  H02M2001/0009 ,  Y02B70/1466 ,  H01L2924/00

摘要： In a driver circuit constructing a switching power supply device that switches power transistors passing a current through a coil by a PWM mode, a current detection transistor, which is smaller in size than the low-potential side power transistor, and a current detection resistor are provided in parallel to the low-potential side power transistor. The same control voltage as the power transistor is applied to the control terminal of the current detection transistor. An operational amplifier is formed, that has the potential of the connection node between the current detection transistor and the current detection resistor applied to its inverse input terminal and a feedback loop, so as to make a pair of input terminals of the operational amplifier be at the same potential. A signal produced by the current detection resistor is thus outputted as a current detection signal.

摘要翻译： 在构成开关电源装置的驱动电路中，通过PWM模式切换通过线圈的电流的开关电源装置，尺寸小于低电位侧功率晶体管的电流检测晶体管和电流检测电阻器 与低电位侧功率晶体管并联提供。 与功率晶体管相同的控制电压施加到电流检测晶体管的控制端。 形成运算放大器，其具有电流检测晶体管和施加到其反相输入端的电流检测电阻之间的连接节点的电位和反馈环路，以使运算放大器的一对输入端子处于 同样的潜力。 因此，由电流检测电阻器产生的信号作为电流检测信号被输出。

公开(公告)号：US07550959B2

公开(公告)日：2009-06-23

申请号：US12017706

申请日：2008-01-22

申请人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

发明人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

IPC分类号： G05F3/16

CPC分类号： H02M3/1588 ,  H01L2224/48137 ,  H01L2224/48247 ,  H02M2001/0009 ,  Y02B70/1466

摘要： In a driver circuit constructing a switching power supply device that switches power transistors passing a current through a coil by a PWM mode, a current detection transistor, which is smaller in size than the low-potential side power transistor, and a current detection resistor are provided in parallel to the low-potential side power transistor. The same control voltage as the power transistor is applied to the control terminal of the current detection transistor. An operational amplifier is formed, that has the potential of the connection node between the current detection transistor and the current detection resistor applied to its inverse input terminal and a feedback loop, so as to make a pair of input terminals of the operational amplifier be at the same potential. A signal produced by the current detection resistor is thus outputted as a current detection signal.

摘要翻译： 在构成开关电源装置的驱动电路中，通过PWM模式切换通过线圈的电流的开关电源装置，尺寸小于低电位侧功率晶体管的电流检测晶体管和电流检测电阻器 与低电位侧功率晶体管并联提供。 与功率晶体管相同的控制电压施加到电流检测晶体管的控制端。 形成运算放大器，其具有电流检测晶体管和施加到其反相输入端的电流检测电阻之间的连接节点的电位和反馈环路，以使运算放大器的一对输入端子处于 同样的潜力。 因此，由电流检测电阻器产生的信号作为电流检测信号被输出。

公开(公告)号：US07514908B2

公开(公告)日：2009-04-07

申请号：US10587215

申请日：2005-01-14

申请人： Kyoichi Hosokawa ,  Ryotaro Kudo ,  Toshio Nagasawa ,  Koji Tateno

发明人： Kyoichi Hosokawa ,  Ryotaro Kudo ,  Toshio Nagasawa ,  Koji Tateno

IPC分类号： G05F1/10 ,  G05F1/40

CPC分类号： H02M3/1588 ,  G05F1/44 ,  H02M7/538 ,  H03F3/217 ,  H03F2200/351 ,  H03F2200/78 ,  H03K17/063 ,  H03K17/687 ,  Y02B70/1466

摘要： The present invention provides a switching power source and a semiconductor integrated circuit which realize an acquisition a sufficient driving voltage of a high-potential side switching element M1 even when a power source voltage VDD is low. In a switching power source which controls a current which flows in an inductor through a switching element which performs a switching operation in response to a PWM signal, and forms an output voltage by a capacitor which is provided in series in the inductor, a booster circuit which is constituted of a bootstrap capacity and a MOSFET is provided between an output node of the switching element and a predetermined voltage terminal, the boosted voltage is used as an operational voltage of a driving circuit of the switching element, another source/drain region and a substrate gate are connected with each other such that when the MOSFET is made to assume an OFF state, and a junction diode between one source/drain region and the substrate gate is inversely directed with respect to the boosted voltage which is formed by the bootstrap capacity.

摘要翻译： 本发明提供一种开关电源和半导体集成电路，即使电源电压VDD低，也能够实现高电位侧开关元件M1的充分驱动电压的获取。 在开关电源中，其通过响应于PWM信号进行开关动作的开关元件来控制在电感器中流动的电流，并且通过串联设置在电感器中的电容器形成输出电压， 在开关元件的输出节点和预定电压端子之间设置由自举电容和MOSFET构成的升压电压作为开关元件的驱动电路的工作电压，另一个源极/漏极区域和 衬底栅极彼此连接，使得当使MOSFET成为OFF状态时，并且在一个源极/漏极区域和衬底栅极之间的结二极管相对于由引导件形成的升压电压是反向的 容量。

公开(公告)号：US20070236204A1

公开(公告)日：2007-10-11

申请号：US11808286

申请日：2007-06-08

申请人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

发明人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

IPC分类号： G05F3/16

CPC分类号： H02M3/1588 ,  H01L2224/48137 ,  H01L2224/48247 ,  H02M2001/0009 ,  Y02B70/1466

摘要： In a driver circuit constructing a switching power supply device that switches power transistors passing a current through a coil by a PWM mode, a current detection transistor, which is smaller in size than the low-potential side power transistor, and a current detection resistor are provided in parallel to the low-potential side power transistor. The same control voltage as the power transistor is applied to the control terminal of the current detection transistor. An operational amplifier is formed, that has the potential of the connection node between the current detection transistor and the current detection resistor applied to its inverse input terminal and a feedback loop, so as to make a pair of input terminals of the operational amplifier be at the same potential. A signal produced by the current detection resistor is thus outputted as a current detection signal.

摘要翻译： 在构成开关电源装置的驱动电路中，通过PWM模式切换通过线圈的电流的开关电源装置，尺寸小于低电位侧功率晶体管的电流检测晶体管和电流检测电阻器 与低电位侧功率晶体管并联提供。 与功率晶体管相同的控制电压施加到电流检测晶体管的控制端。 形成运算放大器，其具有电流检测晶体管和施加到其反相输入端的电流检测电阻之间的连接节点的电位和反馈环路，以使运算放大器的一对输入端子处于 同样的潜力。 因此，由电流检测电阻器产生的信号作为电流检测信号被输出。

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。

公开(公告)号：US20050231177A1

公开(公告)日：2005-10-20

申请号：US11100407

申请日：2005-04-07

申请人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

发明人： Koji Tateno ,  Ryotaro Kudo ,  Shin Chiba ,  Kyoichi Hosokawa ,  Toshio Nagasawa

IPC分类号： G01R19/00 ,  G05F1/613 ,  H02M3/155 ,  H02M3/158 ,  H03K17/08 ,  H03K17/687 ,  H03K17/695

CPC分类号： H02M3/1588 ,  H01L2224/48137 ,  H01L2224/48247 ,  H02M2001/0009 ,  Y02B70/1466

摘要： In a driver circuit constructing a switching power supply device that switches power transistors passing a current through a coil by a PWM mode, a current detection transistor, which is smaller in size than the low-potential side power transistor and a current detection resistor are provided in parallel to the low-potential side power transistor. The same control voltage as the power transistor is applied to the control terminal of the current detection transistor. An operational amplifier is formed, that has the potential of the connection node between the current detection transistor and the current detection resistor applied to its inverse input terminal and a feedback loop, so as to make a pair of input terminals of the operational amplifier be at the same potential. A signal produced by the current detection resistor is thus outputted as a current detection signal.

摘要翻译： 在构成开关电源装置的驱动电路中，通过PWM模式切换通过线圈的电流的开关电源装置，设置尺寸小于低电位侧功率晶体管的电流检测晶体管和电流检测电阻器 与低电位侧功率晶体管并联。 与功率晶体管相同的控制电压施加到电流检测晶体管的控制端。 形成运算放大器，其具有电流检测晶体管和施加到其反相输入端的电流检测电阻之间的连接节点的电位和反馈环路，以使运算放大器的一对输入端子处于 同样的潜力。 因此，由电流检测电阻器产生的信号作为电流检测信号被输出。

公开(公告)号：US06430362B1

公开(公告)日：2002-08-06

申请号：US09059355

申请日：1998-04-14

申请人： Hiroo Okamoto ,  Nobutaka Amada ,  Kyoichi Hosokawa

发明人： Hiroo Okamoto ,  Nobutaka Amada ,  Kyoichi Hosokawa

IPC分类号： H04N5783

CPC分类号： G11B27/005 ,  G11B27/3081 ,  G11B2220/91 ,  H04N5/775 ,  H04N5/78263 ,  H04N5/783 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8063 ,  H04N9/8205 ,  H04N9/8227 ,  H04N19/40

摘要： An object of the present invention is to provide a digital signal recording method and a digital signal recording apparatus, capable of readily producing a signal used to reproduce in a trick play mode from a digital compression video signal. The above-described object of the present invention may be achieved by such a digital video signal recording method for recording a first compression frame signal compressed without using a correlation between frames, and a digital compression video signal having preselected bytes of a packet format constituted by a second compression frame signal compressed with using the correlation between the frames, in which a third signal made of a packet containing the first compression frame signal is produced, and then is recorded in combination with the packet of the digital compression signal.

摘要翻译： 本发明的目的是提供一种数字信号记录方法和数字信号记录装置，能够容易地从数字压缩视频信号产生用于以特技播放模式再现的信号。 本发明的上述目的可以通过这样的一种数字视频信号记录方法来实现，该方法用于记录不使用帧之间相关的压缩的第一压缩帧信号，以及具有预选的字节数的数字压缩视频信号， 使用帧之间的相关关系来压缩第二压缩帧信号，其中由包含第一压缩帧信号的分组构成的第三信号被产生，然后与数字压缩信号的分组一起被记录。