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1. 发明授权

US08149021B2 Current detection circuit and voltage converter using the current detection circuit 有权
标题翻译：电流检测电路和电压转换器采用电流检测电路
公开(公告)号：US08149021B2
公开(公告)日：2012-04-03
申请号：US12643292
申请日：2009-12-21
申请人： Kouichi Mikami , Takuya Ishii , Takashi Ryu
发明人： Kouichi Mikami , Takuya Ishii , Takashi Ryu
IPC分类号： H02M11/00
CPC分类号： H03F3/45475 , G01R19/0092 , H03F2203/45138
摘要： A first auxiliary switch circuit is connected to one terminal and a first terminal of a main switch circuit and generates a first auxiliary detection current. A second auxiliary switch circuit is connected to the other terminal and a second terminal of the main switch circuit and generates a second auxiliary detection current. A current adjustment detection circuit adjusts the first auxiliary detection current so that the potentials of the other terminal and the first terminal are equal and passes the first auxiliary detection current in a direction of receiving the current from the first auxiliary switch circuit and adjusts the second auxiliary detection current so that the potentials of the one terminal and the second terminal are equal and passes the second auxiliary detection current in a direction of outputting the current to the second auxiliary switch circuit, thereby generating a detection current being proportional to the output current.
摘要翻译：第一辅助开关电路连接到主开关电路的一个端子和第一端子，并产生第一辅助检测电流。第二辅助开关电路连接到主开关电路的另一端子和第二端子，并产生第二辅助检测电流。电流调节检测电路调节第一辅助检测电流，使得另一端子和第一端子的电位相等并且在从第一辅助开关电路接收电流的方向上通过第一辅助检测电流，并且调整第二辅助检测电流检测电流使得一端子和第二端子的电位相等并且在向第二辅助开关电路输出电流的方向上通过第二辅助检测电流，从而产生与输出电流成比例的检测电流。

2. 发明申请

US20100156383A1 CURRENT DETECTION CIRCUIT AND VOLTAGE CONVERTER USING THE CURRENT DETECTION CIRCUIT 有权
标题翻译：使用电流检测电路的电流检测电路和电压转换器
公开(公告)号：US20100156383A1
公开(公告)日：2010-06-24
申请号：US12643292
申请日：2009-12-21
申请人： Kouichi Mikami , Takuya Ishii , Takashi Ryu
发明人： Kouichi Mikami , Takuya Ishii , Takashi Ryu
IPC分类号： G05F3/08 , H03K5/22 , H03F3/45
CPC分类号： H03F3/45475 , G01R19/0092 , H03F2203/45138
摘要： A first auxiliary switch circuit is connected to one terminal and a first terminal of a main switch circuit and generates a first auxiliary detection current. A second auxiliary switch circuit is connected to the other terminal and a second terminal of the main switch circuit and generates a second auxiliary detection current. A current adjustment detection circuit adjusts the first auxiliary detection current so that the potentials of the other terminal and the first terminal are equal and passes the first auxiliary detection current in a direction of receiving the current from the first auxiliary switch circuit and adjusts the second auxiliary detection current so that the potentials of the one terminal and the second terminal are equal and passes the second auxiliary detection current in a direction of outputting the current to the second auxiliary switch circuit, thereby generating a detection current being proportional to the output current.
摘要翻译：第一辅助开关电路连接到主开关电路的一个端子和第一端子，并产生第一辅助检测电流。第二辅助开关电路连接到主开关电路的另一端子和第二端子，并产生第二辅助检测电流。电流调节检测电路调节第一辅助检测电流，使得另一端子和第一端子的电位相等并且在从第一辅助开关电路接收电流的方向上通过第一辅助检测电流，并且调整第二辅助检测电流检测电流使得一端子和第二端子的电位相等并且在向第二辅助开关电路输出电流的方向上通过第二辅助检测电流，从而产生与输出电流成比例的检测电流。

3. 发明授权

US07782030B2 Step-down converter 有权
标题翻译：降压转换器
公开(公告)号：US07782030B2
公开(公告)日：2010-08-24
申请号：US11783645
申请日：2007-04-11
申请人： Takashi Ryu , Takuya Ishii , Naoyuki Nakamura , Hirohisa Tanabe
发明人： Takashi Ryu , Takuya Ishii , Naoyuki Nakamura , Hirohisa Tanabe
IPC分类号： G05F1/00
CPC分类号： H02M1/40 , H02M3/156
摘要： The step-down converter includes: a switch; an inductor; a rectifier; a smoothing unit; and a current bypass circuit, wherein when the current flowing toward the inductor exceeds a predetermined value, the current bypass circuit forms a path through which the current flows from the input terminal to the output terminal while bypassing the inductor.
摘要翻译：降压转换器包括：开关; 电感; 整流器平滑单元; 以及电流旁路电路，其中当流向电感器的电流超过预定值时，电流旁路电路形成电流从输入端子流向输出端子的路径，同时绕过电感器。

4. 发明申请

US20080074158A1 Step-up power supply device 有权
标题翻译：升压电源装置
公开(公告)号：US20080074158A1
公开(公告)日：2008-03-27
申请号：US11898701
申请日：2007-09-14
申请人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
发明人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
IPC分类号： H03L7/00
CPC分类号： H02M1/36 , Y10S323/901
摘要： A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device is smaller than a reference voltage; and a control circuit which operates in substitution for the startup circuit when the output voltage is higher than the reference voltage to control the on/off operation of the switch element such that the output voltage reaches a target value. The startup circuit includes an oscillation circuit for generating a pulse signal which has a predetermined on/off ratio, a current comparison circuit for comparing a current of the switch element with a predetermined restriction value, and a drive circuit for generating a drive signal based on which the switch element is turned on/off, the drive signal being generated from the pulse signal to turn on the switch element, and the drive signal being generated from the output of the current comparison circuit or the pulse signal to turn off the switch element.
摘要翻译：升压电源装置包括：升压转换器; 启动电路，当所述器件的输出电压小于参考电压时，控制所述升压转换器的开关元件的接通/断开操作; 以及控制电路，其在输出电压高于基准电压时代替启动电路，以控制开关元件的导通/截止操作，使得输出电压达到目标值。启动电路包括用于产生具有预定的导通/关断比的脉冲信号的振荡电路，用于将开关元件的电流与预定限制值进行比较的电流比较电路，以及用于产生基于所述开关元件被接通/断开，所述驱动信号从所述脉冲信号产生，以接通所述开关元件，并且所述驱动信号是从所述当前比较电路的输出或所述脉冲信号产生的，以将所述开关元件。

5. 发明申请

US20070241725A1 Step-down converter 有权
标题翻译：降压转换器
公开(公告)号：US20070241725A1
公开(公告)日：2007-10-18
申请号：US11783645
申请日：2007-04-11
申请人： Takashi Ryu , Takuya Ishii , Naoyuki Nakamura , Hirohisa Tanabe
发明人： Takashi Ryu , Takuya Ishii , Naoyuki Nakamura , Hirohisa Tanabe
IPC分类号： G05F1/00
CPC分类号： H02M1/40 , H02M3/156
摘要： The step-down converter includes: a switch to which an input voltage is supplied via an input terminal; an inductor which is connected to the switch; rectifier means which allows a current to flow through the inductor in the OFF state of the switch; smoothing means which smoothes the current of the inductor to produce an output voltage to an output terminal; and a current bypass circuit, wherein when the current flowing toward the inductor exceeds a predetermined value, the current bypass circuit forms a path through which the current flows from the input terminal to the output terminal while bypassing the inductor.
摘要翻译：降压转换器包括：经由输入端子向其提供输入电压的开关; 连接到开关的电感器; 整流装置，其允许电流在开关的断开状态下流过电感器; 平滑装置，其平滑电感器的电流以向输出端子产生输出电压; 以及电流旁路电路，其中当流向电感器的电流超过预定值时，电流旁路电路形成电流从输入端子流向输出端子的路径，同时绕过电感器。

6. 发明授权

US07081741B2 Multi-output power supply and electronic device using them 有权
公开(公告)号：US07081741B2
公开(公告)日：2006-07-25
申请号：US11153230
申请日：2005-06-15
申请人： Takuya Ishii , Takashi Ryu , Mikio Motomori , Hirohisa Tanabe , Masato Yoshida , Kazuhito Kimura , Tomoya Shigemi
发明人： Takuya Ishii , Takashi Ryu , Mikio Motomori , Hirohisa Tanabe , Masato Yoshida , Kazuhito Kimura , Tomoya Shigemi
IPC分类号： G05F1/577
CPC分类号： H02M3/158 , H02M2001/008
摘要： For controlling DC-DC converters conforming to voltage mode control system and current mode control system, in multi-output power supply, first converter section 2 is configured that first detection circuit 31 outputs first control signal, that first oscillation circuit 32 outputs first triangular wave signal and clock signal, and that first pulse-width modulation circuit 33 drives first switch by comparing first control signal with first triangular wave signal. Second converter section 4 is configured that second detection circuit 34 outputs second control signal, that second oscillation circuit 35 outputs second triangular wave signal synchronized with clock signal, that current detection circuit 36 outputs current signal of second inductor, and that second pulse-width modulation circuit 37 turns ON second switch in synchronization with clock signal and turns OFF second switch by calculating or comparing second control signal, the second triangular wave signal and current signal.

7. 发明授权

US07075275B2 DC-DC converter 有权
标题翻译： DC-DC转换器
公开(公告)号：US07075275B2
公开(公告)日：2006-07-11
申请号：US11280314
申请日：2005-11-17
申请人： Mikio Motomori , Takuya Ishii , Takashi Ryu , Hiroki Akashi , Hirohisa Tanabe , Makoto Ishimaru , Tomoya Shigemi
发明人： Mikio Motomori , Takuya Ishii , Takashi Ryu , Hiroki Akashi , Hirohisa Tanabe , Makoto Ishimaru , Tomoya Shigemi
IPC分类号： G05F1/70 , H05B4/24
CPC分类号： H02M3/1588 , H02M2001/0025 , H02M2001/0029 , Y02B70/1466
摘要： A DC-DC converter has switching means which generates a continuous switching voltage having a specified period from an input voltage and outputs the generated switching voltage, output voltage generating means which receives the switching voltage at an inductor and generates an output voltage obtained by rectifying and smoothing a voltage generated in the inductor, lamp signal generating means which generates a lamp signal and outputs the generated lamp signal, and control means which performs an arithmetic operation using a current signal relative to a current flowing in the inductor, an error signal relative to the output voltage, and the lamp signal to generate a control signal for controlling the operation of the switching means and outputs the generated control signal to the switching means. The lamp signal generating means includes first signal generating means for generating a first output signal based on a frequency divided signal having first and second periods obtained by dividing the time of a clock signal having the specified period and second signal generating means for generating a second output signal having a phase 180 degrees different from the phase of the first output signal based on the frequency divided signal, generates the lamp signal which rises after being held at a constant value for a specified time period in each of the first and second periods, and outputs the generated lamp signal.
摘要翻译： DC-DC转换器具有切换装置，其从输入电压产生具有指定周期的连续切换电压，并输出产生的开关电压，输出电压产生装置，其接收电感器的开关电压，并产生通过整流和平滑电感器中产生的电压，产生灯信号的灯信号产生装置并输出所产生的灯信号;以及控制装置，其使用相对于在电感器中流动的电流的电流信号进行算术运算，相对于输出电压和灯信号，以产生用于控制开关装置的操作的控制信号，并将所生成的控制信号输出到开关装置。灯信号产生装置包括第一信号产生装置，用于根据具有通过划分具有指定周期的时钟信号的时间获得的第一和第二周期的分频信号产生第一输出信号，以及用于产生第二输出的第二信号产生装置基于分频信号具有与第一输出信号的相位相差180度的信号的信号，产生在第一和第二周期中的每个中保持恒定值一定时间后上升的灯信号，以及输出生成的灯信号。

8. 发明授权

US07825646B2 Step-up converter 有权
标题翻译：升压转换器
公开(公告)号：US07825646B2
公开(公告)日：2010-11-02
申请号：US11905399
申请日：2007-09-28
申请人： Takuya Ishii , Mikio Motomori , Junichi Morita , Takashi Ryu , Masaaki Koto , Makoto Ishimaru , Kazuhito Kimura , Satoshi Wada
发明人： Takuya Ishii , Mikio Motomori , Junichi Morita , Takashi Ryu , Masaaki Koto , Makoto Ishimaru , Kazuhito Kimura , Satoshi Wada
IPC分类号： G05F1/40
CPC分类号： H02M3/156
摘要： The present invention provides a current-mode control step-up converter capable of reducing the minimum duty ratio to a sufficiently small value and facilitating the setting of the maximum duty ratio. The step-up converter comprises a current detector 9 for generating a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 for generating an error signal Ve corresponding to an output DC voltage Vo; and a control circuit 10 for turning ON/OFF the main switch 3 on the basis of the current detection signal Vc and the error signal Ve. The control circuit 10 comprises a comparator 11 and a timer circuit 12. With this configuration, the ON time of the main switch 3 is set at a predetermined value, and the valley value of an inductor current changing in a triangular waveform is controlled. Hence, the OFF time of the main switch is adjusted to stabilize the output. Since the ON time of the main switch 3 can be set as desired, the minimum duty ratio can be reduced to zero or a sufficiently small value.
摘要翻译：本发明提供了一种电流模式控制升压转换器，其能够将最小占空比降低到足够小的值，并且有助于设定最大占空比。升压转换器包括用于产生与整流器4的电流相对应的电流检测信号Vc的电流检测器9; 用于产生对应于输出DC电压Vo的误差信号Ve的误差放大器8; 以及用于根据电流检测信号Vc和误差信号Ve导通/断开主开关3的控制电路10。控制电路10包括比较器11和定时器电路12.通过这种配置，主开关3的接通时间被设定为预定值，并且控制以三角波形变化的电感器电流的谷值。因此，主开关的断开时间被调节以稳定输出。由于可以根据需要设定主开关3的导通时间，所以可以将最小占空比降低到零或足够小的值。

9. 发明授权

US07567069B2 Step-up power supply device 有权
标题翻译：升压电源装置
公开(公告)号：US07567069B2
公开(公告)日：2009-07-28
申请号：US11898701
申请日：2007-09-14
申请人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
发明人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Kazuhito Kimura , Satoshi Wada , Rumi Nakai
IPC分类号： G05F1/40 , H02M3/18
CPC分类号： H02M1/36 , Y10S323/901
摘要： A step-up power supply device includes: a step-up converter; a startup circuit which controls the on/off operation of a switch element of the step-up converter when an output voltage of the device is smaller than a reference voltage; and a control circuit which operates in substitution for the startup circuit when the output voltage is higher than the reference voltage to control the on/off operation of the switch element such that the output voltage reaches a target value. The startup circuit includes an oscillation circuit for generating a pulse signal which has a predetermined on/off ratio, a current comparison circuit for comparing a current of the switch element with a predetermined restriction value, and a drive circuit for generating a drive signal based on which the switch element is turned on/off, the drive signal being generated from the pulse signal to turn on the switch element, and the drive signal being generated from the output of the current comparison circuit or the pulse signal to turn off the switch element.
摘要翻译：升压电源装置包括：升压转换器; 启动电路，当所述器件的输出电压小于参考电压时，控制所述升压转换器的开关元件的接通/断开操作; 以及控制电路，其在输出电压高于基准电压时代替启动电路，以控制开关元件的导通/截止操作，使得输出电压达到目标值。启动电路包括用于产生具有预定的导通/关断比的脉冲信号的振荡电路，用于将开关元件的电流与预定限制值进行比较的电流比较电路，以及用于产生基于所述开关元件被接通/断开，所述驱动信号从所述脉冲信号产生，以接通所述开关元件，并且所述驱动信号是从所述当前比较电路的输出或所述脉冲信号产生的，以将所述开关元件。

10. 发明申请

US20080273354A1 Power Supply 有权
标题翻译：电源
公开(公告)号：US20080273354A1
公开(公告)日：2008-11-06
申请号：US11547487
申请日：2005-03-24
申请人： Takashi Ryu , Hiroki Akashi , Takuya Ishii , Hiroshi Saito
发明人： Takashi Ryu , Hiroki Akashi , Takuya Ishii , Hiroshi Saito
IPC分类号： H02M3/335
CPC分类号： H02M3/156
摘要： There are provided an inductive load current control circuit for detecting and controlling a current flowing to an inductive load with high accuracy, and a power supply.The inductive load current control circuit includes first and second switch elements connected in series between an input voltage and a ground potential, an inductive load connected to a connection point between the first and second switch elements, a third switch element having one terminal connected to the connection point between the first and second switch elements, a current comparator connected to another terminal of the third switch element to compare an output current of the third switch element with a reference current, decide and output a magnitude relation, and a switch element control circuit that controls transition from a state in which the second switch element is turned on to a state in which the first switch element is turned on according to an output of the current comparator.
摘要翻译：提供了一种感应负载电流控制电路，用于高精度地检测和控制流向电感负载的电流和电源。感性负载电流控制电路包括串联连接在输入电压和接地电位之间的第一和第二开关元件，连接到第一和第二开关元件之间的连接点的电感负载，第三开关元件，其一个端子连接到第一开关元件和第二开关元件之间的连接点，连接到第三开关元件的另一端子的电流比较器，以将第三开关元件的输出电流与参考电流进行比较，确定并输出幅度关系，以及开关元件控制电路其根据电流比较器的输出控制从第二开关元件导通的状态到第一开关元件导通的状态的转变。

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