公开(公告)号：US20100013447A1

公开(公告)日：2010-01-21

申请号：US12487073

申请日：2009-06-18

申请人： Katsuhisa FURUSE ,  Yasuhiro Ishizaka ,  Shohtaroh Sohma ,  Koichi Hagino ,  Shinichiro Yamada ,  Toshiya Murota ,  Masanobu Fukushima

发明人： Katsuhisa FURUSE ,  Yasuhiro Ishizaka ,  Shohtaroh Sohma ,  Koichi Hagino ,  Shinichiro Yamada ,  Toshiya Murota ,  Masanobu Fukushima

IPC分类号： G05F1/10

CPC分类号： H02M3/157 ,  H02M2001/0025 ,  Y10S323/901

摘要： A switching power supply circuit for generating an output voltage at an output node based on an input voltage at an input node includes a reference voltage generating circuit configured to generate a reference voltage such that during an initial start-up period of the reference voltage a voltage rise rate of the reference voltage within a first predetermined period from a start point of the initial start-up period and a voltage rise rate thereof within a second predetermined period immediately preceding an end point of the initial start-up period are smaller than a voltage rise rate thereof in a period between the first predetermined period and the second predetermined period, a coil disposed between the input output nodes, and a switch circuit configured to switch on and off to control current through the coil in response to comparison between the reference voltage and a voltage proportional to the output voltage.

摘要翻译： 用于基于输入节点处的输入电压在输出节点处产生输出电压的开关电源电路包括：参考电压产生电路，被配置为产生参考电压，使得在参考电压的初始启动周期期间，电压 在初始启动周期的起始点之前的第一预定时间段内的参考电压的上升速率和在初始启动周期的结束点之前的第二预定时段内的电压上升速率小于电压 在第一预定周期和第二预定周期之间的周期内的上升速率，布置在输入输出节点之间的线圈和被配置为接通和关断的开关电路，以响应于参考电压 和与输出电压成比例的电压。

公开(公告)号：US20080150508A1

公开(公告)日：2008-06-26

申请号：US12003458

申请日：2007-12-26

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/10 ,  G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0022 ,  H02M2001/0025

摘要： A current-mode controlled switching regulator and control method therefor. The switching regulator includes input and output terminals, a switching device to switch in accordance with a control signal, an inductor to store charge from an input voltage at the input terminal based on the switching device, a rectifying device to discharge the charge stored in the inductor, an error amplifier to amplify a voltage difference between a divided voltage generated by dividing an output voltage at the output terminal and a predetermined reference voltage, a slope voltage generator to generate and output a slope voltage having a slope angle corresponding to the input voltage, and a switching controller to compare a voltage output from the error amplifier with the slope voltage, generate a pulse signal with a duty cycle corresponding to a comparison result, and control the switching of the switching device according to the pulse signal.

摘要翻译： 一种电流模式控制开关调节器及其控制方法。 开关稳压器包括输入和输出端子，根据控制信号切换的开关装置，用于基于开关装置从输入端子处的输入电压存储电荷的电感器;整流装置，用于将存储在 电感器，误差放大器，用于放大通过将输出端子处的输出电压除以分压的预定参考电压之间的电压差;斜率电压发生器，用于产生并输出具有对应于输入电压的倾斜角的斜率电压; 以及切换控制器，用于将来自误差放大器的电压输出与斜率电压进行比较，产生与比较结果对应的占空比的脉冲信号，并根据脉冲信号控制开关器件的切换。

公开(公告)号：US20070216388A1

公开(公告)日：2007-09-20

申请号：US11716588

申请日：2007-03-12

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  Y02B70/16

摘要： A switching regulator including an inductor and a switching transistor and having a normal operational mode and a light-load operational mode is disclosed. The switching regulator includes an operational mode switching part configured to switch the normal operational mode and the light-load operational mode, and a light-load detection part configured to detect the light-load state of a load. The light-load detection part is configured to detect the light-load state of the load by a change in the voltage at the connection of the switching transistor and the inductor when the switching transistor is OFF. The operational mode switching part is configured to switch the normal operational mode to the light-load operational mode in response to the detection of the light-load state of the load by the light-load detection part.

摘要翻译： 公开了一种包括电感器和开关晶体管并具有正常操作模式和轻负载操作模式的开关调节器。 开关调节器包括被配置为切换正常操作模式和轻负载操作模式的操作模式切换部分，以及被配置为检测负载的轻负载状态的轻负载检测部。 轻负载检测部被配置为当开关晶体管截止时，通过开关晶体管和电感器的连接处的电压的变化来检测负载的轻负载状态。 操作模式切换部分被配置为响应于轻载检测部分对负载的轻负载状态的检测而将正常操作模式切换到轻负载操作模式。

公开(公告)号：US09413243B2

公开(公告)日：2016-08-09

申请号：US14021092

申请日：2013-09-09

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： H02M3/158 ,  H02M1/44 ,  H02M1/00

CPC分类号： H02M3/1588 ,  H02M1/44 ,  H02M2001/0054 ,  Y02B70/1466 ,  Y02B70/1491

摘要： A switching power supply device includes a first control circuit that turns a first switch on when first and second switches are off and a voltage at a junction node therebetween is increased to decrease a voltage across the first switch to a first threshold voltage, turns off when a first ON-period has elapsed from when the first switch is turned on, and lengthens the first ON-period as an output voltage decreases relative to a reference voltage; and a second control circuit that turns the second switch on when both switches are off and a voltage across the second switch is decreased to a second threshold voltage, turns off when a reverse current flows through the inductor, sufficient to increase the voltage at the junction node to decrease the voltage across the first switch to the first threshold voltage after the second switch is turned off.

摘要翻译： 开关电源装置包括：第一控制电路，其在第一和第二开关断开时使第一开关接通，并且其间的接点处的电压增加，以将第一开关两端的电压降低到第一阈值电压，当第 从第一开关导通开始经过第一导通周期，并且随着输出电压相对于参考电压而减小第一导通周期; 以及第二控制电路，当两个开关断开并且第二开关两端的电压降低到第二阈值电压时，使第二开关接通，当反向电流流经电感器时，该开关关断，足以增加接点处的电压 节点，在第二开关断开之后，将第一开关两端的电压降低到第一阈值电压。

公开(公告)号：US08836300B2

公开(公告)日：2014-09-16

申请号：US12990678

申请日：2009-05-07

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/00 ,  H02M3/158 ,  H02M1/00

CPC分类号： H02M3/1588 ,  H02M2001/0006 ,  Y02B70/1466

摘要： A step-down switching regulator includes a switching element performing switching in accordance with an input control signal to charge an inductor with an input voltage; a synchronous rectification element performing switching in accordance with an input control signal to discharge the inductor; a power supply circuit part generating and outputting a supply voltage; a capacitor connected to the connection of the switching element and the inductor; a first drive circuit part controlling the switching of the switching element in accordance with an input control signal; a second drive circuit part controlling the switching of the synchronous rectification element in accordance with another input control signal; and a control circuit part generating and outputting the control signals to the first and second drive circuit parts so that the predetermined constant voltage is output from an output terminal, wherein the second drive circuit part is supplied with power from the capacitor.

摘要翻译： 降压开关调节器包括开关元件，其根据输入控制信号执行切换以对具有输入电压的电感器充电; 同步整流元件根据输入控制信号执行切换以对电感器放电; 产生并输出电源电压的电源电路部分; 连接到开关元件和电感器的连接的电容器; 第一驱动电路部分，根据输入控制信号控制开关元件的开关; 第二驱动电路部分，根据另一个输入控制信号控制同步整流元件的切换; 以及控制电路部分，其将所述控制信号产生并输出到所述第一和第二驱动电路部分，使得从所述输出端子输出所述预定的恒定电压，其中所述第二驱动电路部分从所述电容器被供电。

公开(公告)号：US20110043175A1

公开(公告)日：2011-02-24

申请号：US12990607

申请日：2009-04-07

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/00

CPC分类号： H02M3/156

摘要： Disclosed is a current-mode control switching regulator that steps down or steps up an input voltage input to an input terminal to a predetermined constant voltage and outputs the stepped input voltage from an output terminal as an output voltage. The current-mode control switching regulator includes a switching element, an inductor, a rectifying element, an error amplification circuit unit, an oscillation circuit unit with variable oscillation frequency, a slope voltage generation circuit unit, and a switching control circuit unit.

摘要翻译： 公开了一种电流模式控制开关调节器，其将输入到输入端子的输入电压降压或升高到预定的恒定电压，并将来自输出端子的阶梯式输入电压作为输出电压输出。 电流模式控制切换调节器包括开关元件，电感器，整流元件，误差放大电路单元，具有可变振荡频率的振荡电路单元，斜坡电压产生电路单元和开关控制电路单元。

公开(公告)号：US20100181977A1

公开(公告)日：2010-07-22

申请号：US12439789

申请日：2008-06-17

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/10

CPC分类号： H02M3/156

摘要： A disclosed switching regulator includes: a switching element switching in accordance with an input control signal; an inductor charged with a supply voltage by the switching of the switching element; a rectifying element discharging the inductor when the switching element is switched off and charging of the inductor is stopped; and a control circuit unit generating an error voltage based on a voltage difference between a proportional voltage and a predetermined reference voltage, generating and outputting a pulse signal with a duty cycle in accordance with the error voltage to a control electrode of the switching element. The control circuit unit generates a feedback voltage from the duty cycle of the pulse signal, generates the pulse signal with the duty cycle from a voltage difference between the generated feedback voltage and the error voltage, and varies the voltage difference from the duty cycle of the pulse signal.

摘要翻译： 所公开的开关调节器包括：根据输入控制信号切换的开关元件; 通过开关元件的开关对电源电压进行充电的电感器; 当开关元件断开并且电感器的充电停止时，整流元件对电感器放电; 以及控制电路单元，其基于比例电压和预定参考电压之间的电压差产生误差电压，根据所述误差电压生成并输出具有占空比的脉冲信号给所述开关元件的控制电极。 控制电路单元根据脉冲信号的占空比生成反馈电压，从产生的反馈电压和误差电压之间的电压差产生占空比的脉冲信号，并将电压差从 脉冲信号。

公开(公告)号：US08508963B2

公开(公告)日：2013-08-13

申请号：US12274880

申请日：2008-11-20

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/56 ,  G05F1/563 ,  G05F1/565 ,  G05F1/575

CPC分类号： H02M3/155 ,  G05F1/56 ,  H02M2001/0006

摘要： In a step-down switching regulator, a switching element is a high-voltage NMOS transistor, turned on and off based on a control signal generated by a controller, and charges an inductor with an input voltage input to an input terminal. A first drive circuit is a low-voltage MOS transistor and turns on and off the switching element based on the control signal. A voltage generator generates a predetermined first power supply voltage not greater than a withstand voltage of the low-voltage MOS transistor. A capacitor is connected in parallel with the first drive circuit and stores charge from the voltage generator to supply power to the first drive circuit. One end of the capacitor is connected to a junction node between the switching element and the inductor, and the other end of the capacitor is supplied with the first power supply voltage generated by the voltage generator.

摘要翻译： 在降压开关调节器中，开关元件是高电压NMOS晶体管，基于由控制器产生的控制信号而导通和截止，并且用输入电压输入到输入端的电感器充电。 第一驱动电路是低压MOS晶体管，并基于控制信号导通和断开开关元件。 电压发生器产生不低于低压MOS晶体管的耐压的预定的第一电源电压。 电容器与第一驱动电路并联连接，并且存储来自电压发生器的电荷以向第一驱动电路供电。 电容器的一端连接到开关元件和电感器之间的结节点，并且电容器的另一端被提供有由电压发生器产生的第一电源电压。

公开(公告)号：US08207721B2

公开(公告)日：2012-06-26

申请号：US12439789

申请日：2008-06-17

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/00

CPC分类号： H02M3/156

摘要： A disclosed switching regulator includes: a switching element switching in accordance with an input control signal; an inductor charged with a supply voltage by the switching of the switching element; a rectifying element discharging the inductor when the switching element is switched off and charging of the inductor is stopped; and a control circuit unit generating an error voltage based on a voltage difference between a proportional voltage and a predetermined reference voltage, generating and outputting a pulse signal with a duty cycle in accordance with the error voltage to a control electrode of the switching element. The control circuit unit generates a feedback voltage from the duty cycle of the pulse signal, generates the pulse signal with the duty cycle from a voltage difference between the generated feedback voltage and the error voltage, and varies the voltage difference from the duty cycle of the pulse signal.

摘要翻译： 所公开的开关调节器包括：根据输入控制信号切换的开关元件; 通过开关元件的开关对电源电压进行充电的电感器; 当开关元件断开并且电感器的充电停止时，整流元件对电感器放电; 以及控制电路单元，其基于比例电压和预定参考电压之间的电压差产生误差电压，根据所述误差电压生成并输出具有占空比的脉冲信号给所述开关元件的控制电极。 控制电路单元根据脉冲信号的占空比生成反馈电压，从产生的反馈电压和误差电压之间的电压差产生占空比的脉冲信号，并将电压差从 脉冲信号。

公开(公告)号：US20110043176A1

公开(公告)日：2011-02-24

申请号：US12990678

申请日：2009-05-07

申请人： Shohtaroh Sohma

发明人： Shohtaroh Sohma

IPC分类号： G05F1/00

CPC分类号： H02M3/1588 ,  H02M2001/0006 ,  Y02B70/1466

摘要： A step-down switching regulator includes a switching element performing switching in accordance with an input control signal to charge an inductor with an input voltage; a synchronous rectification element performing switching in accordance with an input control signal to discharge the inductor; a power supply circuit part generating and outputting a supply voltage; a capacitor connected to the connection of the switching element and the inductor; a first drive circuit part controlling the switching of the switching element in accordance with an input control signal; a second drive circuit part controlling the switching of the synchronous rectification element in accordance with another input control signal; and a control circuit part generating and outputting the control signals to the first and second drive circuit parts so that the predetermined constant voltage is output from an output terminal, wherein the second drive circuit part is supplied with power from the capacitor.

摘要翻译： 降压开关调节器包括开关元件，其根据输入控制信号执行切换以对具有输入电压的电感器充电; 同步整流元件根据输入控制信号执行切换以对电感器放电; 产生并输出电源电压的电源电路部分; 连接到开关元件和电感器的连接的电容器; 第一驱动电路部分，根据输入控制信号控制开关元件的开关; 第二驱动电路部分，根据另一个输入控制信号控制同步整流元件的切换; 以及控制电路部分，其将所述控制信号产生并输出到所述第一和第二驱动电路部分，使得从所述输出端子输出所述预定的恒定电压，其中所述第二驱动电路部分从所述电容器被供电。