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公开(公告)号：US08970136B2
公开(公告)日：2015-03-03
申请号：US14197571
申请日：2014-03-05
CPC分类号： H05B33/0815 , B60Q1/00 , H05B33/0848 , Y02B20/346
摘要： A semiconductor light source lighting circuit includes a voltage step-down unit configured to generate a drive voltage lower than an input voltage by turning on or off a first switching element in a voltage step-down mode, a voltage step-up unit configured to generate the drive voltage higher than the input voltage by turning on or off a second switching element in a voltage step-up mode, and a controller. The controller includes a charge pump unit configured to repeat charging from the drive voltage to a second capacitor and discharging from the charged second capacitor to the first capacitor in the voltage step-up mode, and a switch drive unit configured to apply a voltage higher than the voltage at the other end of the first switching element to the control terminal of the first switching element by using a voltage of the charged first capacitor.
摘要翻译： 一种半导体光源照明电路，包括：降压单元，被配置为通过以降压模式接通或关闭第一开关元件来产生低于输入电压的驱动电压;电压升压单元，被配置为产生 通过以升压模式接通或关闭第二开关元件，驱动电压高于输入电压，以及控制器。 所述控制器包括：电荷泵单元，被配置为在所述升压模式下，从所述驱动电压向所述第二电容器重复充电并从所述充电的第二电容器向所述第一电容器放电;以及开关驱动单元，被配置为施加高于 通过使用充电的第一电容器的电压将第一开关元件的另一端的电压提供给第一开关元件的控制端子。
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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 。
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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.
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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
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。
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公开(公告)号：US20050111149A1
公开(公告)日：2005-05-26
申请号：US10992104
申请日：2004-11-19
申请人： Mikio Motomori
发明人： Mikio Motomori
CPC分类号： H02H7/1213 , H02M1/32 , H02M3/158 , H02M2001/0009
摘要： The switching regulator comprises a main switch, a rectifier switch, an RS-flipflop, a judging unit, an edge pulse generator, a second prohibiting unit, a reference voltage source, and such. When a voltage drop caused due to an on-resistance of the main switch exceeds a predetermined value, the judging unit sets a set signal of the RS-flipflop at a high level, and thereby an overcurrent is cut off. The edge pulse generator monitors a gate voltage of the rectifier switch, and sets a prohibition signal at a high level for a predetermined time period from the trailing edge. Then, the second prohibiting unit sets the set signal at a low level, and prohibits cutting the overcurrent off. Herewith, the likelihood that the main switch will be destroyed by the overcurrent can be reduced.
摘要翻译： 开关调节器包括主开关，整流开关，RS触发器，判断单元，边沿脉冲发生器，第二禁止单元，参考电压源等。 当由于主开关的导通电阻引起的电压降超过预定值时，判断单元将RS触发器的设定信号设定在高电平，从而切断过电流。 边沿脉冲发生器监视整流器开关的栅极电压，并且在从后沿开始的预定时间段内将禁止信号设置在高电平。 然后，第二禁止单元将设定信号设定在低电平，并且禁止切断过电流。 因此，可以减少主开关被过电流破坏的可能性。
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公开(公告)号：US08004256B2
公开(公告)日：2011-08-23
申请号：US12726791
申请日：2010-03-18
申请人： Katsuyuki Tabata , Mikio Motomori
发明人： Katsuyuki Tabata , Mikio Motomori
IPC分类号： G05F1/00
CPC分类号： H02M1/32 , H02M3/158 , H02M2001/0009
摘要： A current limiting circuit for a boost converter includes a voltage divider circuit between a main switch which flows a current to an inductor and a comparator included in a current detecting circuit. The voltage divider circuit includes two transistors of the same type as that of the main switch, which are connected in series. One of the two transistors is a sub-switch which is connected between a voltage division point and a drain terminal of the main switch, and is turned on/off in synchronization with the main switch in accordance with an output signal of a control circuit. The other transistor is a detection resistance transistor which is connected between the voltage division point and a source terminal of the main switch, and whose gate terminal is connected to a bias voltage so that the detection resistance transistor is always on.
摘要翻译： 用于升压转换器的限流电路包括在电流流向电感器的主开关和包括在电流检测电路中的比较器之间的分压器电路。 分压器电路包括与主开关相同类型的两个串联的晶体管。 两个晶体管中的一个是子开关，其连接在主开关的分压点和漏极端子之间，并且根据控制电路的输出信号与主开关同步地导通/截止。 另一个晶体管是连接在主开关的分压点和源极端子之间的检测电阻晶体管，其栅极端子连接到偏置电压，使得检测电阻晶体管总是导通。
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公开(公告)号：US07479771B2
公开(公告)日：2009-01-20
申请号：US11843896
申请日：2007-08-23
申请人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Hirohisa Tanabe , Tomoya Shigemi
发明人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Hirohisa Tanabe , Tomoya Shigemi
IPC分类号： G05F1/00
CPC分类号： H02M3/156 , H02M2001/0009
摘要： A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, comprising a differential amplifier 4 and a compensation transistor 5, for adjusting the output current of the auxiliary switching device 2 so that the potential obtained by subtracting the voltage drop across the offset resistor device 7 from the output potential of the switching device 1 is equal to the output potential of the auxiliary switching device 2, being configured that the detection level of the current flowing in the switching device 1 is shifted by an offset amount.
摘要翻译： 本发明的电流检测电路具有开关元件1， 辅助切换装置2; 偏移电压源，包括偏移电阻器件7和电流源电路8; 补偿电路，包括差分放大器4和补偿晶体管5，用于调整辅助开关器件2的输出电流，使得通过从开关器件的输出电位减去偏移电阻器件7上的电压降而获得的电位 1等于辅助开关装置2的输出电位，被配置为使在开关装置1中流动的电流的检测电平偏移了偏移量。
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公开(公告)号：US20080018387A1
公开(公告)日：2008-01-24
申请号：US11843896
申请日：2007-08-23
申请人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Hirohisa Tanabe , Tomoya Shigemi
发明人： Takashi Ryu , Takuya Ishii , Mikio Motomori , Hirohisa Tanabe , Tomoya Shigemi
IPC分类号： G05F1/10
CPC分类号： H02M3/156 , H02M2001/0009
摘要： A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, comprising a differential amplifier 4 and a compensation transistor 5, for adjusting the output current of the auxiliary switching device 2 so that the potential obtained by subtracting the voltage drop across the offset resistor device 7 from the output potential of the switching device 1 is equal to the output potential of the auxiliary switching device 2, being configured that the detection level of the current flowing in the switching device 1 is shifted by an offset amount.
摘要翻译： 本发明的电流检测电路具有开关元件1， 辅助切换装置2; 偏移电压源，包括偏移电阻器件7和电流源电路8; 补偿电路，包括差分放大器4和补偿晶体管5，用于调整辅助开关器件2的输出电流，使得通过从开关器件的输出电位减去偏移电阻器件7上的电压降而获得的电位 1等于辅助开关装置2的输出电位，被配置为使在开关装置1中流动的电流的检测电平偏移了偏移量。
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9.发明授权公开(公告)号：US07282900B2
公开(公告)日：2007-10-16
申请号：US11206977
申请日：2005-08-19
IPC分类号： G05F1/40
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： A method of regulating an output voltage by utilizing a switching regulator, where the switching regulator includes a high side switch, a low side switch having an active diode, a controller coupled to the high side switch and the low side switch, and a current measuring circuit coupled to the high side switch. The method includes the steps of: measuring the output voltage and if the output voltage is below a desired level, activating the high side switch so as to provide current to a load capacitor via a load inductor, if the voltage is above the desired level, activating the low side switch so as to sink current from the load capacitor via the load inductor; and utilizing the current measuring circuit to measure the current flowing through the high side switch in either a positive direction or a negative direction, where the controller is operable for controlling the current measuring circuit and disabling active components contained in the current measuring circuit and the active diode when the active components are not utilized during operation of the switching regulator so as to reduce operational power requirements of the switching regulator.
摘要翻译： 一种通过利用开关调节器调节输出电压的方法，其中开关调节器包括高侧开关，具有有源二极管的低侧开关，耦合到高侧开关和低侧开关的控制器以及电流测量 电路耦合到高侧开关。 该方法包括以下步骤：测量输出电压，并且如果输出电压低于期望电平，则激活高侧开关以便通过负载电感器向负载电容器提供电流，如果电压高于所需电平， 激活低侧开关，以便经由负载电感器从负载电容器吸收电流; 并利用电流测量电路来测量在正方向或负方向上流过高侧开关的电流，其中控制器可操作用于控制电流测量电路并禁用包含在电流测量电路中的有源元件和有源 当在开关调节器的操作期间不使用有源组件以减少开关调节器的操作功率需求时，二极管。
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公开(公告)号：US07126318B2
公开(公告)日：2006-10-24
申请号：US11210846
申请日：2005-08-25
IPC分类号： G05F1/40
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A method of generating a slope compensation signal for use in a current mode switching regulator. The method includes the steps of summing a clock signal and a reference signal so as to generate a linear ramp signal; generating a non-linear signal from the linear ramp signal; multiplying a correction signal with an input voltage signal so as to generate a signal which varies based on a measured value of a current flowing within the current mode switching regulator; summing a first voltage signal corresponding to the non-linear correction signal and a second voltage signal indicating the difference between an actual voltage level of the current mode switching regulator and the desired voltage level of the current mode switching regulator so as to generate a first output signal which represents the second voltage signal minus the first voltage signal; and comparing the first output signal and the measured value of a current flowing within the current mode switching regulator, and generating a second output signal utilized to control current flow within the current mode switching regulator based on the result of the comparison.
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