公开(公告)号：US06919713B2

公开(公告)日：2005-07-19

申请号：US10681021

申请日：2003-10-07

申请人： Taichi Hoshino ,  Eitaro Oyama

发明人： Taichi Hoshino ,  Eitaro Oyama

IPC分类号： H02M3/155 ,  H02M3/158 ,  G05F1/577

CPC分类号： H02M3/158 ,  H02M2001/009

摘要： Accumulation and emission of energy in and from a coil having an intermediate tap is controlled by switching a DC input voltage from a DC power source on and off. Controlled voltages generated at a plurality of terminals are rectified and smoothed to output a plurality of DC output voltages. Connection to a reference voltage is controlled such that the voltages generated at the plurality of terminals are not dependent on the DC input voltage during the on-off switching. Therefore, a switching power supply unit is provided in which a coil having an intermediate tap is used to allow a simple configuration, to convert a DC input voltage into a plurality of DC output voltages with high efficiency, and to achieve compactness.

摘要翻译： 通过切换来自直流电源的直流输入电压来控制来自具有中间抽头的线圈的能量的累积和发射。 在多个端子处产生的受控电压被整流和平滑以输出多个DC输出电压。 控制与参考电压的连接，使得在开关切换期间在多个端子处产生的电压不依赖于DC输入电压。 因此，提供了一种开关电源单元，其中使用具有中间抽头的线圈以允许简单的配置，将DC输入电压以高效率转换为多个DC输出电压并实现紧凑性。

公开(公告)号：US07755340B2

公开(公告)日：2010-07-13

申请号：US11995745

申请日：2006-07-12

申请人： Shinya Karasawa ,  Eitaro Oyama ,  Hiroshi Miyahara

发明人： Shinya Karasawa ,  Eitaro Oyama ,  Hiroshi Miyahara

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  H02M1/36 ,  Y02B70/1466

摘要： A switching transistor has a source connected to the ground and a drain connected to the first terminal. The other end of an inductor whose one end is to be connected to the first terminal is connected to the second terminal. An input voltage is applied to the third terminal. An auxiliary transistor is disposed between the second terminal and the third terminal. A first soft start circuit generates a first soft start voltage that increases with lapse of time, and a second soft start circuit generates a second soft start voltage that increases with a delay to the first soft start voltage. An error amplifier controls the gate voltage of the auxiliary transistor on the basis of the error voltage between the output voltage and the first soft start voltage.

摘要翻译： 开关晶体管具有连接到地的源极和连接到第一端子的漏极。 其一端要连接到第一端子的电感器的另一端连接到第二端子。 输入电压施加到第三端子。 辅助晶体管设置在第二端子和第三端子之间。 第一软启动电路产生随时间推移而增加的第一软启动电压，第二软启动电路产生随着第一软启动电压的延迟而增加的第二软启动电压。 误差放大器根据输出电压和第一软启动电压之间的误差电压来控制辅助晶体管的栅极电压。

公开(公告)号：US06954056B2

公开(公告)日：2005-10-11

申请号：US10712159

申请日：2003-11-12

申请人： Taichi Hoshino ,  Eitaro Oyama

发明人： Taichi Hoshino ,  Eitaro Oyama

IPC分类号： H02M3/155 ,  H02J7/00 ,  H02M1/36 ,  H02M3/156 ,  G05F1/40

CPC分类号： H02M1/36 ,  H02J7/0065 ,  H02M3/156 ,  Y10S323/901

摘要： A low-voltage operating block and a high-voltage operating block are controlled at the same soft start voltage as that employed at the time of start-up. At a point in time at which an output DC voltage has reached an expected value, a control signal of the low-voltage operating block is switched to a control signal of the high-voltage operating block. As a result, switching is smoothly performed without involvement of occurrence of a variation in the output voltage before and after switching operation. In a switching power supply unit having a low-voltage operating block and a high-voltage operating block, which are intended for producing a higher DC voltage from a low power supply voltage, it prevents occurrence of a rush current and a start-up failure, which would otherwise be caused by switching operation.

摘要翻译： 控制低电压工作模块和高电压工作模块与启动时使用的软启动电压相同。 在输出直流电压达到期望值的时间点，将低电压工作模块的控制信号切换为高电压工作模块的控制信号。 结果，切换顺利地执行，而不涉及在切换操作之前和之后输出电压的变化。 在具有用于从低电源电压产生更高的直流电压的低电压工作模块和高电压工作模块的开关电源装置中，可防止产生冲击电流和启动故障 ，否则将由开关操作引起。

公开(公告)号：US06275095B1

公开(公告)日：2001-08-14

申请号：US09433050

申请日：1999-11-03

申请人： Taichi Hoshino ,  Kengo Adachi ,  Eitaro Oyama

发明人： Taichi Hoshino ,  Kengo Adachi ,  Eitaro Oyama

IPC分类号： H03K301

CPC分类号： H03F3/4508 ,  H01L27/0623 ,  H03F3/45085 ,  H03F3/45183 ,  H03F2203/45476 ,  H03F2203/45511 ,  H03F2203/45674

摘要： A semiconductor amplifier circuit comprises a semiconductor substrate of one conductivity type, a well region of the one conductivity type, formed in said semiconductor substrate, a well region defining region of the other conductivity type, including a side wall portion and a bottom portion defining the well region, a first transistor formed in the well region and a second transistor formed on a surface of another portion of the substrate other than a portion on which the well region is formed. When the first and second transistors are in operation, a potential of the substrate is set to a reference potential, a potential of the well region defining region is set equal to the potential of the substrate or set to a value at which a junction between the well region defining region and the substrate is reverse-biased and at least one of the electrodes of the first transistor is set to a potential at which a junction between the well region defining region and the well region is reverse-biased.

摘要翻译： 一种半导体放大器电路包括一个导电类型的半导体衬底，一个导电类型的阱区，形成在所述半导体衬底中，另一个导电类型的阱区限定区，包括侧壁部和底部， 阱区，形成在阱区中的第一晶体管和形成在衬底的另一部分的除了形成阱区的部分的表面之外的第二晶体管。 当第一和第二晶体管工作时，将衬底的电位设置为参考电位，将阱区限定区的电位设置为等于衬底的电位或设定为在 阱区域限定区域并且衬底被反向偏置，并且第一晶体管的至少一个电极被设置为阱区域限定区域和阱区域之间的接合被反向偏置的电位。

公开(公告)号：US06538907B2

公开(公告)日：2003-03-25

申请号：US09983457

申请日：2001-10-24

申请人： Taichi Hoshino ,  Eitaro Oyama

发明人： Taichi Hoshino ,  Eitaro Oyama

IPC分类号： H02M318

CPC分类号： H02M3/07

摘要： A voltage drop DC-DC converter includes a switch circuit including a plurality of switches for alternately connecting a first and second capacitors in series and in parallel in response to an output signal of an oscillator circuit oscillating at a constant frequency. An efficient voltage dropping conversion is possible by deriving a voltage divided by the first and second capacitors when the first and second capacitors are connected in series and deriving terminal voltages of the first and second capacitors when the first and second capacitors are connected in parallel. When the derived voltage is increased beyond an aimed reference output voltage, the oscillation of the oscillator circuit is stopped.

公开(公告)号：US20090146633A1

公开(公告)日：2009-06-11

申请号：US11995745

申请日：2006-07-12

申请人： Shinya Karasawa ,  Eitaro Oyama ,  Hiroshi Miyahara

发明人： Shinya Karasawa ,  Eitaro Oyama ,  Hiroshi Miyahara

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  H02M1/36 ,  Y02B70/1466

摘要： A switching transistor has a source connected to the ground and a drain connected to the first terminal. The other end of an inductor whose one end is to be connected to the first terminal is connected to the second terminal. An input voltage is applied to the third terminal. An auxiliary transistor is disposed between the second terminal and the third terminal. A first soft start circuit generates a first soft start voltage that increases with lapse of time, and a second soft start circuit generates a second soft start voltage that increases with a delay to the first soft start voltage. An error amplifier controls the gate voltage of the auxiliary transistor on the basis of the error voltage between the output voltage and the first soft start voltage.

摘要翻译： 开关晶体管具有连接到地的源极和连接到第一端子的漏极。 其一端要与第一端子连接的电感器的另一端连接到第二端子。 输入电压施加到第三端子。 辅助晶体管设置在第二端子和第三端子之间。 第一软启动电路产生随时间推移而增加的第一软启动电压，第二软启动电路产生随着第一软启动电压的延迟而增加的第二软启动电压。 误差放大器根据输出电压和第一软启动电压之间的误差电压来控制辅助晶体管的栅极电压。