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公开(公告)号：US07221208B2
公开(公告)日：2007-05-22
申请号：US10541385
申请日：2004-01-07
IPC分类号： H03K17/687
CPC分类号： H03K17/0822
摘要： The present invention provides a switching circuit comprising a current detecting circuit that detects current waveform of a main switch in real time waveform and outputs it in low impedance. The switching circuit comprises the current detecting circuit having the main switch (11), of which on-voltage shows resistance characteristics, wherein a gate terminal is connected to a driving circuit (4) and further either terminal of drain or source thereof is connected to a fixed potential (3) and the other terminal thereof is connected to a load circuit (2) respectively, a first resistance element (21), of which resistance value is higher than on-resistance of the main switch connected to the fixed potential (3), a subsidiary switch (12), a source terminal thereof is connected to the first resistance element (21), an amplifier (6) that amplifies comparatively voltage generated in the first resistance element (21) and outputs to a gate terminal of the subsidiary switch (12) and the second resistance element (22) that generates voltage by amplifying on-current of the main switch (11) by connecting to the drain terminal of the subsidiary switch (11).
摘要翻译： 本发明提供了一种开关电路，其包括检测电流波形的电流检测电路，并以低阻抗输出。 开关电路包括具有主开关（11）的电流检测电路，其中导通电压显示电阻特性，其中栅极端子连接到驱动电路（4），并且其漏极或源极的任一端子连接到 固定电位（3），其另一端分别连接到负载电路（2），电阻值高于与固定电位相连的主开关的导通电阻的第一电阻元件（21） 3），辅助开关（12），其源极端子连接到第一电阻元件（21），放大器（6），其放大在第一电阻元件（21）中产生的相对电压，并输出到栅极端子 辅助开关（12）和第二电阻元件（22），通过连接到副开关（11）的漏极端子，通过放大主开关（11）的导通电流来产生电压。
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公开(公告)号：US20060049810A1
公开(公告)日：2006-03-09
申请号：US10541385
申请日：2004-01-07
申请人： Kenichi Kubota , Masaki Ohshima , Yukihiro Nozaki , Hiroyuki Haga
发明人： Kenichi Kubota , Masaki Ohshima , Yukihiro Nozaki , Hiroyuki Haga
IPC分类号： G05F1/10
CPC分类号： H03K17/0822
摘要： The present invention provides a switching circuit comprising a current detecting circuit that detects current waveform of a main switch in real time waveform and outputs it in low impedance. The switching circuit comprises the current detecting circuit having the main switch (11), of which on-voltage shows resistance characteristics, wherein a gate terminal is connected to a driving circuit (4) and further either terminal of drain or source thereof is connected to a fixed potential (3) and the other terminal thereof is connected to a load circuit (2) respectively, a first resistance element (21), of which resistance value is higher than on-resistance of the main switch connected to the fixed potential (3), a subsidiary switch (12), a source terminal thereof is connected to the first resistance element (21), an amplifier (6) that amplifies comparatively voltage generated in the first resistance element (21) and outputs to a gate terminal of the subsidiary switch (12) and the second resistance element (22) that generates voltage by amplifying on-current of the main switch (11) by connecting to the drain terminal of the subsidiary switch (11).
摘要翻译： 本发明提供了一种开关电路，其包括检测电流波形的电流检测电路，并以低阻抗输出。 开关电路包括具有主开关（11）的电流检测电路，其中导通电压显示电阻特性，其中栅极端子连接到驱动电路（4），并且其漏极或源极的任一端子连接到 固定电位（3），其另一端分别连接到负载电路（2），电阻值高于与固定电位相连的主开关的导通电阻的第一电阻元件（21） 3），辅助开关（12），其源极端子连接到第一电阻元件（21），放大器（6），其放大在第一电阻元件（21）中产生的相对电压，并输出到栅极端子 辅助开关（12）和第二电阻元件（22），通过连接到副开关（11）的漏极端子，通过放大主开关（11）的导通电流来产生电压。
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公开(公告)号：US06984966B2
公开(公告)日：2006-01-10
申请号：US10519450
申请日：2004-02-19
申请人： Kenichi Kubota , Kenichi Suzuki , Yutaka Sekine , Masaki Oshima , Haruo Watanabe , Hiroyuki Haga , Yoshihiko Kikuchi , Masanori Hayashi , Kenichi Zenta , Yukihiro Nozaki
发明人： Kenichi Kubota , Kenichi Suzuki , Yutaka Sekine , Masaki Oshima , Haruo Watanabe , Hiroyuki Haga , Yoshihiko Kikuchi , Masanori Hayashi , Kenichi Zenta , Yukihiro Nozaki
IPC分类号： G05F1/40
CPC分类号： H02M3/156 , H02M3/1588 , Y02B70/1466
摘要： A switching power supply; wherein a voltage detector is provided at the output of a power supply circuit and connected to the negative input of an error amplifier to amplify the error between detected voltage and reference voltage, the output of said amplifier is connected to the negative input of a first comparator and to the negative input of a second comparator through split resistors, a filter circuit is connected between a control switch and synchronous switch and the output of said filter circuit is connected to a first comparator and a second comparator, wherein said configuration constitues a control means to control the amplitude of the triangular waveform obtained through said filter circuit to be between an input level of said first comparator and an input of said second comparator, whereby the stability of the switching power supply is ensured without lowering the frequency band of said amplified error signal and stable output ripple characteristics can be materialized.
摘要翻译： 开关电源; 其中电压检测器设置在电源电路的输出端并连接到误差放大器的负输入端以放大检测电压和参考电压之间的误差，所述放大器的输出端连接到第一比较器的负输入端 并且通过分压电阻到第二比较器的负输入，滤波电路连接在控制开关和同步开关之间，并且所述滤波电路的输出连接到第一比较器和第二比较器，其中所述配置构成控制装置 将通过所述滤波器电路获得的三角波形的振幅控制在所述第一比较器的输入电平和所述第二比较器的输入之间，从而确保开关电源的稳定性，而不降低所述放大误差的频带 信号和稳定的输出纹波特性可以实现。
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公开(公告)号：US20050212498A1
公开(公告)日：2005-09-29
申请号：US10519450
申请日：2004-02-19
申请人： Kenichi Kubota , Kenichi Suzuki , Yutaka Sekine , Masaki Oshima , Haruo Watanabe , Hiroyuki Haga , Yoshihiko Kikuchi , Masanori Hayashi , Kenichi Zenta , Yukihiro Nozaki
发明人： Kenichi Kubota , Kenichi Suzuki , Yutaka Sekine , Masaki Oshima , Haruo Watanabe , Hiroyuki Haga , Yoshihiko Kikuchi , Masanori Hayashi , Kenichi Zenta , Yukihiro Nozaki
CPC分类号： H02M3/156 , H02M3/1588 , Y02B70/1466
摘要： A switching power supply; wherein a voltage detector is provided at the output of a power supply circuit and connected to the negative input of an error amplifier to amplify the error between detected voltage and reference voltage, the output of said amplifier is connected to the negative input of a first comparator and to the negative input of a second comparator through split resistors, a filter circuit is connected between a control switch and synchronous switch and the output of said filter circuit is connected to a first comparator and a second comparator, wherein said configuration constitues a control means to control the amplitude of the triangular waveform obtained through said filter circuit to be between an input level of said first comparator and an input of said second comparator, whereby the stability of the switching power supply is ensured without lowering the frequency band of said amplified error signal and stable output ripple characteristics can be materialized.
摘要翻译： 开关电源; 其中电压检测器设置在电源电路的输出端并连接到误差放大器的负输入端以放大检测电压和参考电压之间的误差，所述放大器的输出端连接到第一比较器的负输入端 并且通过分压电阻到第二比较器的负输入，滤波电路连接在控制开关和同步开关之间，并且所述滤波电路的输出连接到第一比较器和第二比较器，其中所述配置构成控制装置 将通过所述滤波器电路获得的三角波形的振幅控制在所述第一比较器的输入电平和所述第二比较器的输入之间，从而确保开关电源的稳定性，而不降低所述放大误差的频带 信号和稳定的输出纹波特性可以实现。
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