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1. 发明授权

US08581567B2 Controlling switching regulator under light load conditions 有权
标题翻译：在轻负载条件下控制开关稳压器
公开(公告)号：US08581567B2
公开(公告)日：2013-11-12
申请号：US12469967
申请日：2009-05-21
申请人： Shinya Shimizu , Yuusuke Michishita
发明人： Shinya Shimizu , Yuusuke Michishita
IPC分类号： G05F1/565 , G05F1/575
CPC分类号： H02M3/156 , H02M2001/0025
摘要： In a switching regulator, a peak current value of an inductor current iL corresponding to a critical current is obtained by {(Vin−Vout)/Vin×Vout/L×Ts}, where Ts is the frequency of clock signals CLK constituting set pulses generated at predetermined timings by an oscillating circuit 9. Accordingly, by setting a reference voltage VLL as (Vout/L×Ts/rs), the peak current value of the inductor current iL when the load current has decreased is set to be the peak current value of the inductor current iL corresponding to the critical current. Therefore, simply by setting the reference voltage VLL in advance, the peak current of the inductor current iL when the load current has decreased is set to be the peak current value of the inductor current iL corresponding to the critical current.
摘要翻译：在开关调节器中，通过{（Vin-Vout）/ Vin×Vout / L×Ts}获得对应于临界电流的电感器电流iL的峰值电流值，其中Ts是构成设定脉冲的时钟信号CLK的频率因此，通过将基准电压VLL设定为（Vout / L×Ts / rs），负载电流下降时的电感电流iL的峰值电流值被设定为峰值对应于临界电流的电感电流iL的电流值。因此，通过预先设定基准电压VLL，负载电流下降时的电感电流iL的峰值电流被设定为与临界电流对应的电感电流iL的峰值电流值。

2. 发明申请

US20110169464A1 DC-DC CONVERTER 有权
标题翻译： DC-DC转换器
公开(公告)号：US20110169464A1
公开(公告)日：2011-07-14
申请号：US13120488
申请日：2009-09-14
申请人： Yuusuke Michishita , Shinya Shimizu
发明人： Yuusuke Michishita , Shinya Shimizu
IPC分类号： G05F1/46
CPC分类号： H02M3/1563
摘要： A DC-DC converter to convert an input voltage into a predetermined voltage includes a first switching device to provide energy for an inductor; a second switching device to discharge the energy from the inductor to an output terminal; an error amplifier to amplify an error voltage between a first reference voltage and a monitoring voltage obtained by dividing an output voltage output from the output terminal; a set signal generation circuit including a first comparator into which a second reference voltage and an output of the error amplifier are input; a reset signal generation circuit; a control circuit into which an output from the set signal generation circuit and an output from the reset signal generation circuit are input; and a detection circuit to detect a switching frequency of an electric power supply, wherein a characteristic of the first comparator is changed according to the switching frequency.
摘要翻译：将输入电压转换为预定电压的DC-DC转换器包括为电感器提供能量的第一开关装置; 第二开关装置，用于将能量从电感器放电到输出端子; 误差放大器，用于放大第一参考电压和通过分压从输出端输出的输出电压而获得的监测电压之间的误差电压; 设置信号发生电路，包括输入第二参考电压和误差放大器的输出的第一比较器; 复位信号发生电路; 输入来自所述设定信号生成电路的输出和来自所述复位信号生成电路的输出的控制电路; 以及检测电路，用于检测电源的开关频率，其中第一比较器的特性根据开关频率而改变。

3. 发明授权

US08829876B2 Switching regulator and operation control method thereof 有权
标题翻译：开关调节器及其运行控制方法
公开(公告)号：US08829876B2
公开(公告)日：2014-09-09
申请号：US13266206
申请日：2010-04-20
申请人： Yuusuke Michishita , Shinya Shimizu
发明人： Yuusuke Michishita , Shinya Shimizu
IPC分类号： H02M3/156 , H02M3/158
CPC分类号： H02M3/158 , H02M3/156
摘要： A non-isolated type switching regulator having an inductor includes: a switch element; a rectification element; an error amplifying circuit section amplifying a voltage difference between a feedback voltage and a first reference voltage and outputting as an error voltage; a first voltage comparison circuit section performing a voltage comparison of a ramp voltage which performs a voltage change set beforehand with the error voltage to be synchronized with the switching of the switch element and producing and outputting a first comparison signal; a second voltage comparison circuit performing a voltage comparison of the error voltage with a second reference voltage and producing and outputting a second comparison signal; an oscillation circuit section starting an oscillation based on the second comparison signal and producing and outputting a clock signal; and a control circuit section performing a switching control of the switch element based on the clock signal and the first comparison signal.
摘要翻译：具有电感器的非隔离型开关调节器包括：开关元件; 整改要素误差放大电路部，放大反馈电压和第一基准电压之间的电压差，并作为误差电压输出; 第一电压比较电路部分执行斜波电压的电压比较，所述斜坡电压执行预先设定的电压变化以与所述开关元件的切换同步的所述误差电压并产生并输出第一比较信号; 第二电压比较电路，执行误差电压与第二参考电压的电压比较，并产生和输出第二比较信号; 振荡电路部，基于第二比较信号，开始振荡，产生并输出时钟信号; 以及控制电路部，其基于所述时钟信号和所述第一比较信号来执行所述开关元件的切换控制。

4. 发明授权

US08319487B2 Non-isolated current-mode-controlled switching voltage regulator 失效
标题翻译：非隔离电流模式控制开关电压调节器
公开(公告)号：US08319487B2
公开(公告)日：2012-11-27
申请号：US12554076
申请日：2009-09-04
申请人： Yuusuke Michishita , Shinya Shimizu
发明人： Yuusuke Michishita , Shinya Shimizu
IPC分类号： G05F1/00
CPC分类号： H02M3/156
摘要： A novel voltage regulator includes an indictor, a switching transistor, a rectifier, an error amplifier circuit, a first voltage comparator circuit, a second voltage comparator circuit, an oscillator circuit, and a driver circuit. The first voltage comparator circuit outputs a modulation signal. The second voltage comparator circuit activates an enable signal when the error voltage exceeds the second reference voltage. The oscillator circuit outputs a clock signal with a fixed frequency according to the enable signal. The oscillator circuit enters a first state when the enable signal is activated and deactivated within a period of time shorter than a threshold time, and enters a second state when the enable signal remains activated during a period of time longer than the threshold time. The driver circuit generates the switching control signal based on the clock signal and the modulation signal.
摘要翻译：一种新颖的电压调节器包括指示器，开关晶体管，整流器，误差放大器电路，第一电压比较器电路，第二电压比较器电路，振荡器电路和驱动器电路。第一电压比较器电路输出调制信号。当误差电压超过第二参考电压时，第二电压比较器电路激活使能信号。振荡电路根据使能信号输出具有固定频率的时钟信号。当使能信号在比阈值时间短的时间段内激活和去激活时，振荡器电路进入第一状态，并且当使能信号在比阈值时间长的时间段内保持激活时，振荡器电路进入第二状态。驱动电路基于时钟信号和调制信号产生开关控制信号。

5. 发明授权

US08242764B2 DC-DC converter having VFM mode in which inductor current increases and switching frequency decreases 失效
标题翻译：具有VFM模式的DC-DC转换器，其中电感器电流增加并且开关频率降低
公开(公告)号：US08242764B2
公开(公告)日：2012-08-14
申请号：US12557756
申请日：2009-09-11
申请人： Shinya Shimizu , Yuusuke Michishita
发明人： Shinya Shimizu , Yuusuke Michishita
IPC分类号： G05F1/565
CPC分类号： H02M3/1588 , H02M2001/0012 , Y02B70/1466
摘要： A non-isolated DC-DC converter that converts a voltage input to an input terminal to output a constant output voltage to a load terminal while switching control mode between a PWM mode and a VFM mode depending on a current output to the load terminal. The DC-DC converter includes an inductor, a switching circuit, and a control circuit. The inductor stores electric energy for supply to the load terminal. The switching circuit switches on and off current flow at a switching frequency to alternately charge and discharge the inductor. The control circuit increases an electric current flowing to the load terminal through the inductor per one operational cycle as the switching frequency decreases during VFM control mode operation.
摘要翻译：一种非隔离DC-DC转换器，其根据向负载端子的电流输出，在PWM模式和VFM模式之间切换控制模式时，将输入的电压转换为输入端子，以向负载端子输出恒定的输出电压。 DC-DC转换器包括电感器，开关电路和控制电路。电感器存储供给负载端子的电能。开关电路以开关频率接通和关断电流以交替地对电感器充电和放电。控制电路在VFM控制模式运行期间随着开关频率的降低，每一个运行周期增加通过电感器流向负载端子的电流。

6. 发明申请

US20090322299A1 NON-ISOLATED CURRENT-MODE-CONTROLLED SWITCHING VOLTAGE REGULATOR 失效
标题翻译：非隔离电流模式控制开关电压调节器
公开(公告)号：US20090322299A1
公开(公告)日：2009-12-31
申请号：US12554076
申请日：2009-09-04
申请人： Yuusuke Michishita , Shinya Shimizu
发明人： Yuusuke Michishita , Shinya Shimizu
IPC分类号： G05F1/00
CPC分类号： H02M3/156
摘要： A novel voltage regulator includes an indictor, a switching transistor, a rectifier, an error amplifier circuit, a first voltage comparator circuit, a second voltage comparator circuit, an oscillator circuit, and a driver circuit. The first voltage comparator circuit outputs a modulation signal. The second voltage comparator circuit activates an enable signal when the error voltage exceeds the second reference voltage. The oscillator circuit outputs a clock signal with a fixed frequency according to the enable signal. The oscillator circuit enters a first state when the enable signal is activated and deactivated within a period of time shorter than a threshold time, and enters a second state when the enable signal remains activated during a period of time longer than the threshold time. The driver circuit generates the switching control signal based on the clock signal and the modulation signal.
摘要翻译：一种新颖的电压调节器包括指示器，开关晶体管，整流器，误差放大器电路，第一电压比较器电路，第二电压比较器电路，振荡器电路和驱动器电路。第一电压比较器电路输出调制信号。当误差电压超过第二参考电压时，第二电压比较器电路激活使能信号。振荡电路根据使能信号输出具有固定频率的时钟信号。当使能信号在比阈值时间短的时间段内激活和去激活时，振荡器电路进入第一状态，并且当使能信号在比阈值时间长的时间段内保持激活时，振荡器电路进入第二状态。驱动电路基于时钟信号和调制信号产生开关控制信号。

7. 发明授权

US08797014B2 DC-DC converter including circuit to detect switching frequency of switching supply 有权
标题翻译： DC-DC转换器包括检测开关电源开关频率的电路
公开(公告)号：US08797014B2
公开(公告)日：2014-08-05
申请号：US13120488
申请日：2009-09-14
申请人： Yuusuke Michishita , Shinya Shimizu
发明人： Yuusuke Michishita , Shinya Shimizu
IPC分类号： G05F1/565 , G05F1/575
CPC分类号： H02M3/1563
摘要： A DC-DC converter to convert an input voltage into a predetermined voltage includes a first switching device to provide energy for an inductor; a second switching device to discharge the energy from the inductor to an output terminal; an error amplifier to amplify an error voltage between a first reference voltage and a monitoring voltage obtained by dividing an output voltage output from the output terminal; a set signal generation circuit including a first comparator into which a second reference voltage and an output of the error amplifier are input; a reset signal generation circuit; a control circuit into which an output from the set signal generation circuit and an output from the reset signal generation circuit are input; and a detection circuit to detect a switching frequency of an electric power supply, wherein a characteristic of the first comparator is changed according to the switching frequency.
摘要翻译：将输入电压转换为预定电压的DC-DC转换器包括为电感器提供能量的第一开关装置; 第二开关装置，用于将能量从电感器放电到输出端子; 误差放大器，用于放大第一参考电压和通过分压从输出端输出的输出电压而获得的监测电压之间的误差电压; 设置信号发生电路，包括输入第二参考电压和误差放大器的输出的第一比较器; 复位信号发生电路; 输入来自所述设定信号生成电路的输出和来自所述复位信号生成电路的输出的控制电路; 以及检测电路，用于检测电源的开关频率，其中第一比较器的特性根据开关频率而改变。

8. 发明申请

US20120038341A1 SWITCHING REGULATOR AND OPERATION CONTROL METHOD THEREOF 有权
标题翻译：切换稳压器及其操作控制方法
公开(公告)号：US20120038341A1
公开(公告)日：2012-02-16
申请号：US13266206
申请日：2010-04-20
申请人： Yuusuke Michishita , Shinya Shimizu
发明人： Yuusuke Michishita , Shinya Shimizu
IPC分类号： G05F1/00
CPC分类号： H02M3/158 , H02M3/156
摘要： A non-isolated type switching regulator having an inductor includes: a switch element; a rectification element; an error amplifying circuit section amplifying a voltage difference between a feedback voltage and a first reference voltage and outputting as an error voltage; a first voltage comparison circuit section performing a voltage comparison of a ramp voltage which performs a voltage change set beforehand with the error voltage to be synchronized with the switching of the switch element and producing and outputting a first comparison signal; a second voltage comparison circuit performing a voltage comparison of the error voltage with a second reference voltage and producing and outputting a second comparison signal; an oscillation circuit section starting an oscillation based on the second comparison signal and producing and outputting a clock signal; and a control circuit section performing a switching control of the switch element based on the clock signal and the first comparison signal.
摘要翻译：具有电感器的非隔离型开关调节器包括：开关元件; 整改要素误差放大电路部，放大反馈电压和第一基准电压之间的电压差，并作为误差电压输出; 第一电压比较电路部分执行斜波电压的电压比较，所述斜坡电压执行预先设定的电压变化以与所述开关元件的切换同步的所述误差电压并产生并输出第一比较信号; 第二电压比较电路，执行误差电压与第二参考电压的电压比较，并产生和输出第二比较信号; 振荡电路部，基于第二比较信号，开始振荡，产生并输出时钟信号; 以及控制电路部，其基于所述时钟信号和所述第一比较信号来执行所述开关元件的切换控制。

9. 发明申请

US20090302820A1 SWITCHING REGULATOR 有权
标题翻译：开关稳压器
公开(公告)号：US20090302820A1
公开(公告)日：2009-12-10
申请号：US12469967
申请日：2009-05-21
申请人： Shinya SHIMIZU , Yuusuke Michishita
发明人： Shinya SHIMIZU , Yuusuke Michishita
IPC分类号： G05F1/10
CPC分类号： H02M3/156 , H02M2001/0025
摘要： In a switching regulator, a peak current value of an inductor current iL corresponding to a critical current is obtained by {(Vin−Vout)/Vin×Vout/L×Ts}, where Ts is the frequency of clock signals CLK constituting set pulses generated at predetermined timings by an oscillating circuit 9. Accordingly, by setting a reference voltage VLL as (Vout/L×Ts/rs), the peak current value of the inductor current iL when the load current has decreased is set to be the peak current value of the inductor current iL corresponding to the critical current. Therefore, simply by setting the reference voltage VLL in advance, the peak current of the inductor current iL when the load current has decreased is set to be the peak current value of the inductor current iL corresponding to the critical current.
摘要翻译：在开关调节器中，通过{（Vin-Vout）/ VinxVout / LxTs}获得对应于临界电流的电感器电流iL的峰值电流值，其中Ts是构成在预定定时产生的设定脉冲的时钟信号CLK的频率因此，通过将基准电压VLL设定为（Vout / LxTs / rs），负载电流下降时的电感电流iL的峰值电流值被设定为电感电流的峰值电流值 iL对应于临界电流。因此，通过预先设定基准电压VLL，负载电流下降时的电感电流iL的峰值电流被设定为与临界电流对应的电感电流iL的峰值电流值。

10. 发明申请

US20080197828A1 Switching regulator 失效
标题翻译：开关稳压器
公开(公告)号：US20080197828A1
公开(公告)日：2008-08-21
申请号：US12068930
申请日：2008-02-13
申请人： Yuusuke Michishita
发明人： Yuusuke Michishita
IPC分类号： G05F1/10 , G05F1/44
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A switching regulator includes a switching transistor to switch in accordance with an input control signal, an inductor charged with an input voltage in response to a switching operation by the switching transistor, a switch signal generator to detect an inductor current flowing through the inductor from a voltage at a connection point between the switching transistor and the inductor and output a predetermined switch signal after a time in accordance with the input voltage when detecting the inductor current is zero, and a controller to perform a PWM control or a PFM control on the switching transistor in accordance with the switch signal output from the switch signal generator to keep an output voltage output from the output terminal at a predetermined constant voltage. The controller performs the PFM control when the predetermined switch signal is continuously input thereto from the switch signal generator one or more times.
摘要翻译：一种开关稳压器包括：根据输入控制信号切换的开关晶体管，响应于开关晶体管的开关操作而充满输入电压的电感器;开关信号发生器，用于检测来自电感器的电感器电流; 在开关晶体管和电感之间的连接点处的电压，并且当检测到电感器电流为零时，根据输入电压在一段时间之后输出预定的开关信号，并且控制器对开关进行PWM控制或PFM控制晶体管根据从开关信号发生器输出的开关信号将输出电压输出保持在预定的恒定电压。当预定的开关信号从开关信号发生器一次或多次连续输入时，控制器执行PFM控制。

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