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1. 发明专利

JP2008040696A Power supply circuit and power amplifier using the power supply circuit 审中-公开
标题翻译：电源电路和使用电源电路的功率放大器
公开(公告)号：JP2008040696A
公开(公告)日：2008-02-21
申请号：JP2006212685
申请日：2006-08-04
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： AKIMURA HIDEHARU , RYU TAKASHI
IPC分类号： G05F1/56
摘要： PROBLEM TO BE SOLVED: To provide a power supply circuit preventing the saturation of an output transistor without changing the voltage value of input signals even when the power supply voltage of the output transistor declines, and a power amplifier using the power supply circuit.
SOLUTION: In a series regulator, when the power supply voltage Vcc of the output transistor 201 drops and gets close to an output voltage Vout, the voltage gain of the output transistor 201 is adjusted to lower the output voltage Vout and the saturation of the output transistor 201 is prevented.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使当输出晶体管的电源电压下降时，提供一种防止输出晶体管的饱和而不改变输入信号的电压值的电源电路，以及使用该电源电路的功率放大器。解决方案：在串联调节器中，当输出晶体管201的电源电压Vcc下降并接近输出电压Vout时，调节输出晶体管201的电压增益以降低输出电压Vout和饱和度的输出晶体管201。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2006074948A Dc-dc converter 有权
标题翻译： DC-DC转换器
公开(公告)号：JP2006074948A
公开(公告)日：2006-03-16
申请号：JP2004257597
申请日：2004-09-03
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： ISHIMARU MAKOTO , ISHII TAKUYA , SAITO HIROSHI , RYU TAKASHI , TANABE HIROHISA , AKASHI HIROKI
IPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To provide a DC-DC converter with high reliability, even if an output current decreases in a discontinuous mode, an increase in an output ripple voltage and variations in a switching frequency are small in a system of controlling an off-time of a high side switch.
SOLUTION: This DC-DC converter includes an input terminal for inputting an input voltage; an output terminal for outputting an output voltage; a switch and a rectifier connected between the input terminal and an earth terminal in series; an inductor of which one end is connected to a connecting point of the switch and the rectifier, and the other end of which is connected to the output terminal; smoothing means connected between the other end of the inductor and a ground terminal; and a control unit including a timer for setting on-time of the switch, and controlling the switch and the rectifier. When non-conductive time is generated on which the switch is turned off and the rectifier is in a disconnecting state, the timer is constituted to set so that on-time is shorter as the non-conductive time is longer.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：为了提供高可靠性的DC-DC转换器，即使输出电流在不连续模式下降低，输出纹波电压的增加和开关频率的变化在控制系统中也很小高侧开关的关闭时间。解决方案：该DC-DC转换器包括用于输入输入电压的输入端子; 用于输出输出电压的输出端子; 连接在输入端子和接地端子串联的开关和整流器; 电感器的一端连接到开关和整流器的连接点，另一端连接到输出端子; 连接在电感器的另一端和接地端子之间的平滑装置; 以及控制单元，其包括用于设置开关导通时间的定时器，以及控制开关和整流器。当产生开关断开并且整流器处于断开状态的非导通时间时，定时器被构造成使得导通时间更短，因为非导通时间更长。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2006050858A Synchronous rectifying circuit and switching power source using same 有权
标题翻译：同步整流电路和切换电源
公开(公告)号：JP2006050858A
公开(公告)日：2006-02-16
申请号：JP2004231540
申请日：2004-08-06
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： AKASHI HIROKI , ISHII TAKUYA , SAITO HIROSHI , RYU TAKASHI , TANABE HIROHISA , ISHIMARU MAKOTO
IPC分类号： H02M3/155 , H02M7/21
摘要： PROBLEM TO BE SOLVED: To provide a synchronous rectifying circuit capable of making an electric current flowing through a rectifying switch be zero or nearly zero when the rectifying switch is in an interrupted condition, and provide a switching power source using the same. SOLUTION: A synchronous rectifying circuit has an electric current detecting means and a driving means for detecting electric currents as the thresholds of a first current value and a second current value. The driving means is configured to set a control signal at a first level if an electric current flowing through a rectifying switch is equal to a first current value or over, make a control signal change toward a second level if an electric current flowing through a rectifying switch falls between the first current value and the second curent value, and set a control signal at the second level if an electric current flowing through a rectifying switch is not greater than the second current value. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种同步整流电路，当整流开关处于中断状态时，能够使流过整流开关的电流为零或几乎为零，并且提供使用该同步整流电路的开关电源。解决方案：同步整流电路具有电流检测装置和用于检测电流作为第一电流值和第二电流值的阈值的驱动装置。如果流过整流开关的电流等于第一电流值，则驱动装置被配置为将第一电平的控制信号设定为第一电流值，如果流过整流电流的电流，则控制信号变为第二电平开关落在第一电流值和第二电流值之间，如果流过整流开关的电流不大于第二电流值，则将控制信号设置在第二电平。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2006034035A Dc-dc converter 审中-公开
标题翻译： DC-DC转换器
公开(公告)号：JP2006034035A
公开(公告)日：2006-02-02
申请号：JP2004211513
申请日：2004-07-20
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： TANABE HIROHISA , RYU TAKASHI , MOTOMORI MIKIO , ISHII TAKUYA , SHIGEMI TOMOYA
IPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To provide a current mode DC-DC converter by a peak-value control system that causes small output fluctuation when operated under a duty ratio of around 100%.
SOLUTION: The DC-DC converter (10) supplies a switching current to an inductor (103) by a switching element (100) and a rectifier (101) and outputs an output voltage VOUT smoothed by the inductor (103) and a capacitor (104). The DC-DC converter (10) creates an error current (IERR) from the output voltage (VOUT) and creates a feedback current (IFB) from an inductor current IL. With regard to the switching control in one cycle, a control circuit (40) controls the switching element (100) in such a way that it is not switched off within a given period of time from the start of the cycle when the switching element (100) was not in an OFF state in the preceding cycle to the cycle.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过峰值控制系统提供电流模式DC-DC转换器，当在约100％的占空比下工作时，其产生小的输出波动。解决方案：DC-DC转换器（10）通过开关元件（100）和整流器（101）将开关电流提供给电感器（103），并输出由电感器（103）平滑的输出电压VOUT和电容器（104）。 DC-DC转换器（10）根据输出电压（VOUT）产生误差电流（IERR），并从电感电流IL产生反馈电流（IFB）。关于一个周期中的切换控制，控制电路（40）以这样的方式控制开关元件（100），使得它在从开始周期的给定时间段内不被切断，当开关元件 100）在上一循环中没有处于关闭状态。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2005073155A Phase compensation circuit 有权
标题翻译：相位补偿电路
公开(公告)号：JP2005073155A
公开(公告)日：2005-03-17
申请号：JP2003303303
申请日：2003-08-27
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： RYU TAKASHI
IPC分类号： H03F3/50 , H03F3/34
摘要： PROBLEM TO BE SOLVED: To provide a phase compensation circuit which appropriately compensates for phase characteristics while making an output voltage hardly be affected by a rapid fluctuation of a power supply voltage and being stable against a change of transmission conductance caused by a change of an output current.
SOLUTION: In an amplifier composed of two amplification stages, a electrostatic capacitor Cc and a resistance value controller Mc which are connected in series, are provided between an output terminal of a first amplification stage A1 and a voltage source terminal V
DD which becomes a reference of an input signal on the second amplification stage, the resistance value controller is controlled by the input signal on the second amplification stage, and a zero point of phase characteristics between an input and an output on the first amplification stage is allowed to follow a pole of phase characteristics between an input and an output on the second amplifier stage that is fluctuated dependently on a change of transmission conductance on the second amplifier stage. Thus, a voltage change between the input signal on the second amplifier stage and the reference voltage source terminal V
DD relative to the fluctuation of the power supply voltage is reduced, and the output voltage on the second amplifier stage is hardly affected by the fluctuation.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种相位补偿电路，其适当地补偿相位特性，同时使输出电压几乎不受电源电压的快速波动的影响并且对于由变化引起的透射电导的变化是稳定的的输出电流。解决方案：在由两个放大级组成的放大器中，串联连接的静电电容器Cc和电阻值控制器Mc设置在第一放大级A1的输出端和电压源端子V SB之间 > DD ，其成为第二放大级上的输入信号的参考，电阻值控制器由第二放大级上的输入信号控制，并且输入和输出之间的相位特性的零点第一放大级被允许跟随第二放大器级上的输入和输出之间的相位特性的极点，其依赖于第二放大器级上的传输电导的变化而波动。因此，相对于电源电压的波动，第二放大器级上的输入信号与基准电压源端子V SB SB之间的电压变化减小，第二放大器级的输出电压几乎不受波动的影响。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2003333836A Dc-dc converter 有权
标题翻译： DC-DC转换器
公开(公告)号：JP2003333836A
公开(公告)日：2003-11-21
申请号：JP2002134683
申请日：2002-05-09
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： ISHII TAKUYA , SAITO HIROSHI , KAMIYA HIRONORI , RYU TAKASHI
IPC分类号： H02M3/155 , H02M3/158
CPC分类号： H02M3/158 , H02M3/1582
摘要： PROBLEM TO BE SOLVED: To enhance the transient response rate of a step-up DC-DC converter that receives a DC voltage from a battery or the like, and supplies a controlled DC voltage to a load.
SOLUTION: The DC-DC converter comprises a switch connected between the input and the output, a first comparison circuit 130 outputting comparison results of a first voltage E1 lower than a set output voltage Eset by a specified level and a DC output voltage Eo, and a second comparison circuit 133 outputting comparison results of a second voltage E2 lower than a DC input voltage Ei by a specified level and the DC output voltage Eo. In the converter, the switch is turned on when Eo
摘要翻译：要解决的问题：提高从电池等接收直流电压的升压型DC-DC转换器的瞬态响应速度，并将受控直流电压提供给负载。解决方案：DC-DC转换器包括连接在输入和输出端之间的开关，第一比较电路130将低于设定输出电压Eset的第一电压E1的比较结果输出指定电平和直流输出电压以及第二比较电路133，将比DC输入电压Ei低的第二电压E2的比较结果输出指定电平和DC输出电压Eo。在转换器中，当Eo

7. 发明专利

JP2008092618A Step-up converter 有权
标题翻译：升压转换器
公开(公告)号：JP2008092618A
公开(公告)日：2008-04-17
申请号：JP2006267191
申请日：2006-09-29
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： ISHII TAKUYA , MOTOMORI MIKIO , MORITA JUNICHI , RYU TAKASHI , KOTO MASAAKI , ISHIMARU MAKOTO , KIMURA KAZUTO , WADA SATOSHI
IPC分类号： H02M3/155
CPC分类号： H02M3/156
摘要： PROBLEM TO BE SOLVED: To provide a current mode control type step-up converter wherein a minimum duty ratio can be reduced to a sufficiently small value and a maximum duty ratio can be easily set. SOLUTION: The step-up converter includes: a current detector 9 that generates a current detection signal Vc corresponding to the current of a rectifier 4; an error amplifier 8 that generates an error signal Ve corresponding to output direct-current voltage Vo; and a control circuit 10 that turns on/off a main switch 3 based on the current detection signal Vc and the error signal Ve. The control circuit 10 includes a comparator 11 and a timer circuit 12. With this construction, the on time of the main switch 3 is set to a predetermined value and the valley value of an inductor current that increases and decreases like a triangular wave is controlled. Therefore, it is the off time of the main switch to be adjusted for output stabilization. The on time of the main switch can be freely set, and the minimum duty ratio can be reduced to zero or a sufficiently small value. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种电流模式控制型升压转换器，其中可以将最小占空比降低到足够小的值，并且可以容易地设置最大占空比。解决方案：升压转换器包括：电流检测器9，其生成与整流器4的电流相对应的电流检测信号Vc; 产生对应于输出直流电压Vo的误差信号Ve的误差放大器8; 以及基于电流检测信号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.通过这种结构，将主开关3的接通时间设定为预定值，并且控制像三角波那样增减的电感器电流的谷值。因此，主开关的关闭时间被调整以用于输出稳定。主开关的接通时间可以自由设定，最小占空比可以减小到零或足够小的值。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2007325371A Power supply device 审中-公开
标题翻译：电源设备
公开(公告)号：JP2007325371A
公开(公告)日：2007-12-13
申请号：JP2006150769
申请日：2006-05-31
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： TANABE HIROHISA , ISHII TAKUYA , RYU TAKASHI , NAKAMURA NAOYUKI
IPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To provide a power supply device capable of performing an overcurrent protection operation properly, even if a low voltage of a small current is supplied to a load against an operation of supplying a high voltage of a large current, in the power supply unit that supplies a variably controlled DC output voltage to a resistive load.
SOLUTION: This power supply device is provided with a converter 11, a current detection circuit 12 that detects an output current of the converter 11 and outputs a current detection signal, a setting circuit 13 that generates an overcurrent protection set point which increases in accordance with an output control signal that is input, and a control circuit 15 that controls the output voltage of the converter 11 according to the output control signal and limits an output current of the converter 11 so as to make the current detection signal equal to or lower than the overcurrent protection set point.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够适当地执行过电流保护操作的电源装置，即使为了提供大电流的高电压的操作而向负载提供小电流的低电压，在向电阻负载提供可变控制的直流输出电压的电源单元中。解决方案：该电源装置设有转换器11，检测转换器11的输出电流并输出电流检测信号的电流检测电路12，产生增加的过电流保护设定值的设定电路13 根据输入的输出控制信号，以及根据输出控制信号控制转换器11的输出电压的控制电路15，并限制转换器11的输出电流，使电流检测信号等于或低于过电流保护设定值。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007288942A Step-down converter 有权
标题翻译：降压转换器
公开(公告)号：JP2007288942A
公开(公告)日：2007-11-01
申请号：JP2006114622
申请日：2006-04-18
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： RYU TAKASHI , ISHII TAKUYA , NAKAMURA NAOYUKI , TANABE HIROHISA
IPC分类号： H02M3/155
CPC分类号： H02M1/40 , H02M3/156
摘要： PROBLEM TO BE SOLVED: To provide a step-down converter that prevents magnetic saturation of an inductor, and can supply a large current to the output. SOLUTION: The step-down converter has a switch 2, to which an input voltage from an input terminal is supplied; an inductor 4 connected to the switch 2; a rectifying means 3 making current flow to an inductor 4, when the switch 2 is open; and a smoothing means 5 for smoothing the current in the inductor 4 for generating output voltage to the output terminal. There is a current bypass circuit 7 for constituting a path for enabling the current to flow from the input terminal to the output one, without going through the intermediary of the inductor 4, when the current flowing into the inductor 4 exceeds a prescribed value. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种防止电感器的磁饱和的降压转换器，并且可以向输出端提供大电流。解决方案：降压转换器具有开关2，来自输入端的输入电压被提供给开关2; 连接到开关2的电感器4; 整流装置3，当开关2断开时，使电流流向电感器4; 以及平滑装置5，用于平滑电感器4中的电流以产生输出端子的输出电压。当流入电感器4的电流超过规定值时，存在用于构成用于使电流从输入端子流向输出端的路径而不经过电感器4的中间的电流旁路电路7。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2007159395A Hysteresis switching regulator 有权
标题翻译：麻痹开关调节器
公开(公告)号：JP2007159395A
公开(公告)日：2007-06-21
申请号：JP2006327822
申请日：2006-12-05
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： OSWALD RICHARD K , YAMAMOTO KAN , RYU TAKASHI , TANABE HIROHISA , KOTO MASAAKI
IPC分类号： H02M3/155
CPC分类号： H02M3/1563
摘要： PROBLEM TO BE SOLVED: To provide a switching regulator for generating a control signal, the amplitude of which is not affected by the magnitude of the load current, without using a resistor for detecting an inductor current.
SOLUTION: The switching regulator 40 is provided with a high-side switch 11 and a low-side switch 12, an inductor L15, and a capacitor C13 connected to a load 17. The hysteresis switching regulator 40 is provided with a low-pass filter 42 formed of resistors r1a, r1b and a capacitor CR and connected to an input side of the inductor L15, a buffer 43 connected to an output side of the low-pass filter 42, and a damping/sampling circuit 44 formed of resistors r2a, r2b, r3 and using the output of the buffer 43 as an input signal, and controls the high-side switch 11 with the output of a hysteresis comparator 16 for inputting the output of the damping/sampling circuit 44.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供用于产生控制信号的开关调节器，其振幅不受负载电流的大小的影响，而不使用用于检测电感器电流的电阻器。
解决方案：开关调节器40设置有连接到负载17的高侧开关11和低侧开关12，电感器L15和电容器C13。磁滞开关调节器40具有低电平由电阻器r1a，r1b和电容器CR形成并连接到电感器L15的输入侧的通滤波器42，连接到低通滤波器42的输出侧的缓冲器43，以及由低通滤波器42形成的阻尼/取样电路44 电阻r2a，r2b，r3，并使用缓冲器43的输出作为输入信号，并用迟滞比较器16的输出控制高侧开关11，用于输入阻尼/取样电路44的输出。版权所有（C）2007，JPO＆INPIT

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