公开(公告)号：US06664772B2

公开(公告)日：2003-12-16

申请号：US09860827

申请日：2001-05-21

申请人： Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa ,  Seiya Kitagawa ,  Toshiyuki Matsuyama ,  Takashi Matsumoto ,  Kyuichi Takimoto ,  Yoshiaki Sano

发明人： Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa ,  Seiya Kitagawa ,  Toshiyuki Matsuyama ,  Takashi Matsumoto ,  Kyuichi Takimoto ,  Yoshiaki Sano

IPC分类号： G05F140

CPC分类号： H02M1/36 ,  H02M3/156 ,  H02M2001/008

摘要： A direct-current to direct-current conversion (DC/DC) apparatus includes a control circuit having an error amplifier for voltage control and controlling a direct-current to direct-current conversion based on a pulse width modulation control using an output of the error amplifier. The error amplifier inputs a voltage signal corresponding to an output voltage of a DC/DC result and a plurality of reference voltage signals. The DC/DC apparatus also includes a soft start capacitor to provide one of the plurality of reference voltage signals. The error amplifier amplifies a difference between the voltage signal corresponding to the output voltage of a DC/DC result and a voltage signal of a lower potential among the plurality of reference voltage signals and, based on-the amplified output, carries out the pulse width modulation control. Furthermore, the control circuit includes a circuit for discharging charges corresponding to the output voltage of the DC/DC result when a power supply to the control circuit is turned off. By the constitution, it is possible to easily realize power turn-on/turn-off sequence controls without requiring any special logic circuit, and thus to control rise/fall characteristics of the output voltage without depending on the load.

摘要翻译： 直流到直流转换（DC / DC）装置包括控制电路，该控制电路具有用于电压控制的误差放大器，并且基于使用误差输出的脉冲宽度调制控制来控制直流到直流转换的直流 放大器 误差放大器输入对应于DC / DC结果和多个参考电压信号的输出电压的电压信号。 DC / DC装置还包括软启动电容器，以提供多个参考电压信号中的一个。 误差放大器放大对应于DC / DC结果的输出电压的电压信号与多个参考电压信号中较低电位的电压信号之间的差值，并且基于放大的输出，执行脉冲宽度 调制控制。 此外，当控制电路的电源被断开时，控制电路包括用于对与DC / DC结果的输出电压相对应的电荷进行放电的电路。通过这种结构，可以容易地实现电源接通/转换 不需要任何特殊逻辑电路，从而控制输出电压的上升/下降特性，而不依赖于负载。

公开(公告)号：US06639812B2

公开(公告)日：2003-10-28

申请号：US09946378

申请日：2001-09-06

申请人： Shigeaki Nakazawa ,  Hidetoshi Yano ,  Hidekiyo Ozawa ,  Mitsuo Saeki ,  Kouichi Matsuda ,  Shigeo Tanaka

发明人： Shigeaki Nakazawa ,  Hidetoshi Yano ,  Hidekiyo Ozawa ,  Mitsuo Saeki ,  Kouichi Matsuda ,  Shigeo Tanaka

IPC分类号： H02M3335

CPC分类号： H02M3/33507

摘要： A power supply control circuit connectable with an input power monitor that monitors an input power value to the power supply, an output power monitor that monitors an output power value from the power supply, and an output power controller that varies the output power value from the power supply, the power supply control circuit having an output power determiner that determines a determined output power value depending on the input power value and a power adjuster that adjusts the output power value to the determined output power value by controlling the output power controller.

摘要翻译： 一种电源控制电路，其与监视电源的输入功率值的输入功率监视器连接，监视来自电源的输出功率值的输出功率监视器，以及输出功率控制器， 所述电源控制电路具有输出功率确定器，所述输出功率确定器根据所述输入功率值确定确定的输出功率值;以及功率调节器，其通过控制所述输出功率控制器将所述输出功率值调整到所确定的输出功率值。

公开(公告)号：US06420858B1

公开(公告)日：2002-07-16

申请号：US09466133

申请日：1999-12-21

申请人： Seiya Kitagawa ,  Toshiyuki Matsuyama ,  Hidekiyo Ozawa

发明人： Seiya Kitagawa ,  Toshiyuki Matsuyama ,  Hidekiyo Ozawa

IPC分类号： G05F140

CPC分类号： H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： A DC-to-DC converter circuit having a power saving mode, and which achieves a high conversion efficiency without using a sense resistance. The DC-to-DC converter circuit includes a triangular wave generation circuit to generate a triangular wave signal and a differential amplifier to receive the triangular wave signal and to generate an output signal. A main switching element is provided to turn ON and OFF an input voltage, and a synchronous commutating switching element is provided to perform synchronous commutation of a load current. A detection device detects whether an output voltage of the main switching element is larger than an input voltage of the main switching element. A control device operates in a power saving mode to reduce a drive voltage of the main switching element in response to the detection device detecting that the output voltage of the main switching element is larger than the input voltage.

摘要翻译： 具有省电模式的DC-DC转换器电路，并且在不使用检测电阻的情况下实现高转换效率。 DC-DC转换器电路包括三角波产生电路，用于产生三角波信号，差分放大器接收三角波信号并产生输出信号。 提供主开关元件以接通和断开输入电压，并且提供同步换向开关元件以执行负载电流的同步换向。 检测装置检测主开关元件的输出电压是否大于主开关元件的输入电压。 控制装置以省电模式工作，以响应于检测装置检测到主开关元件的输出电压大于输入电压而降低主开关元件的驱动电压。

公开(公告)号：US6046896A

公开(公告)日：2000-04-04

申请号：US694581

申请日：1996-08-09

申请人： Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa

发明人： Mitsuo Saeki ,  Hidetoshi Yano ,  Hidekiyo Ozawa

IPC分类号： H02H7/12 ,  H02H7/16 ,  H02M3/158 ,  H02H3/20

CPC分类号： H02H7/1213 ,  H02M3/1588 ,  H02H7/16 ,  Y02B70/1466

摘要： To avoid burning out a capacitor in a synchronous rectification type DC-to-DC converter due to overvoltages, the synchronous rectification type DC-to-DC converter includes a storage unit storing therein power derived from a power supply, switching elements connecting and disconnecting respective signal paths from power and ground, and a control unit controlling the connecting/disconnecting operations of the switching elements to maintain a voltage output from the storage unit at a predetermined value. The DC/DC converter also includes an overvoltage detecting unit monitoring a voltage derived from the power supply to thereby output an alarm signal when the voltage derived from the power supply exceeds a preselected voltage value, a shortcircuiting unit influencing the connecting conditions of the switching elements when the alarm signal from the overvoltage detecting unit is input therein, whereby the voltage derived from the power supply is shortcircuited, and an interrupting unit interrupting one of the signal paths by the power shortcircuited by the shortcircuiting unit.

摘要翻译： 为了避免由于过电压而在同步整流型DC-DC转换器中烧毁电容器，同步整流型DC-DC转换器包括存储单元，其存储来自电源的功率，各自连接和断开的开关元件 来自电源和地的信号路径，以及控制单元，控制开关元件的连接/断开操作，以将从存储单元输出的电压保持在预定值。 DC / DC转换器还包括过电压检测单元，其监视从电源导出的电压，从而当从电源导出的电压超过预选电压值时输出报警信号;影响开关元件的连接条件的短路单元 当来自过电压检测单元的报警信号被输入时，由电源导出的电压短路，并且中断单元通过由短路单元短路的电力中断信号路径之一。

公开(公告)号：US5739667A

公开(公告)日：1998-04-14

申请号：US578805

申请日：1995-12-26

申请人： Kouichi Matsuda ,  Mitsuo Saeki ,  Nobuo Tanaka ,  Hidekiyo Ozawa

发明人： Kouichi Matsuda ,  Mitsuo Saeki ,  Nobuo Tanaka ,  Hidekiyo Ozawa

IPC分类号： G01R31/36 ,  H01M10/44 ,  H02J1/00 ,  H02J7/10 ,  H02J7/34 ,  H02J9/06 ,  H02J7/00

CPC分类号： H02J7/0072 ,  H02J9/061

摘要： A control system for charging enabling efficient charging of rechargeable batteries in an electronic apparatus which charges its rechargeable batteries by using a charger circuit when driving the apparatus by using an external power source, including first detecting unit for detecting a differential value between a maximum permissible charging current allowed by the rechargeable batteries and a charging current flowing to the rechargeable batteries; second detecting unit for detecting a maximum usable current by detecting a differential value between a maximum supplyable current allowed by the external power source and the current consumption of the apparatus; third detecting unit for detecting a differential value between a maximum useable current and the charging current flowing to the rechargeable batteries; and control unit for controlling the system in accordance with the differential values detected by the first and third detecting units so that the charger circuit generates the maximum charging current within the range where the charging current flowing to the rechargeable batteries does not exceed either of the maximum permissible charging current and the maximum useable current.

公开(公告)号：US07705483B2

公开(公告)日：2010-04-27

申请号：US11526051

申请日：2006-09-25

申请人： Hidekiyo Ozawa ,  Morihito Hasegawa

发明人： Hidekiyo Ozawa ,  Morihito Hasegawa

IPC分类号： H02J3/00 ,  H02J1/00 ,  H02J1/04

CPC分类号： H02M3/156 ,  H02M2001/008 ,  H02M2001/009 ,  Y10T307/281 ,  Y10T307/406

摘要： An object of the present invention is to provide a DC-DC converter control circuit capable of maintaining, even when any one of a plural number of DC-DC converters enters the abnormal state due to the occurrence of a failure, a voltage relationship between the output voltage of the faulty DC-DC converter and the output voltage of another DC-DC converter. An error amplifier ERA1G has an inverting input, a first non-inverting input, and a second non-inverting input. A first divided voltage VV1 provided from a first voltage divider circuit VD1 is fed into the inverting input; a reference voltage e1G from ground is fed into the first non-inverting input; and a second divided voltage VV2 provided from a second voltage divider circuit VD2 is fed into the second non-inverting input. The error amplifier ERA1G amplifies the error between the lower of the two voltage inputs fed into the two non-inverting inputs (i.e. the lower of the reference voltage e1G and the second divided voltage VV2), and the first divided voltage VV1 fed into the inverting input. The output terminal of the error amplifier ERA1G is connected to the input terminal of a PWM unit P1G.

摘要翻译： 本发明的一个目的是提供一种DC-DC转换器控制电路，即使当多个DC-DC转换器中的任何一个由于发生故障而进入异常状态时，也能够维持 故障DC-DC转换器的输出电压和另一个DC-DC转换器的输出电压。 误差放大器ERA1G具有反相输入，第一同相输入和第二同相输入。 从第一分压电路VD1提供的第一分压VV1被馈送到反相输入端; 来自地的参考电压e1G被馈送到第一同相输入端; 并且从第二分压器电路VD2提供的第二分压VV2被馈送到第二同相输入端。 误差放大器ERA1G放大馈送到两个同相输入端的两个电压输入的较低端（即，参考电压e1G和第二分压VV2的较低者）之间的误差，并将第一分压VV1馈入反相 输入。 误差放大器ERA1G的输出端连接到PWM单元P1G的输入端。

公开(公告)号：US07701178B2

公开(公告)日：2010-04-20

申请号：US10954754

申请日：2004-10-01

申请人： Masaya Tsukamoto ,  Akira Haraguchi ,  Hidekiyo Ozawa

发明人： Masaya Tsukamoto ,  Akira Haraguchi ,  Hidekiyo Ozawa

IPC分类号： H02J7/06 ,  H02J7/00

CPC分类号： H02J7/0031 ,  H02J7/0072

摘要： A circuit for controlling charging includes a transistor provided on a charging path between a position of a charging terminal and a position of a battery, an input voltage detecting circuit configured to detect a potential of a point on the charging path coupled to the charging terminal's side of the transistor, and a drive circuit configured to control an ON resistance of the transistor between a conductive state and a nonconductive state in response to the potential detected by the input voltage detecting circuit.

摘要翻译： 用于控制充电的电路包括设置在充电端子的位置和电池位置之间的充电路径上的晶体管，被配置为检测耦合到充电终端侧的充电路径上的点的电位的输入电压检测电路 以及驱动电路，被配置为响应于由输入电压检测电路检测到的电位而在导通状态和非导通状态之间控制晶体管的导通电阻。

公开(公告)号：US07675267B2

公开(公告)日：2010-03-09

申请号：US11527496

申请日：2006-09-27

申请人： Hidekiyo Ozawa ,  Takashi Matsumoto ,  Takahiro Yoshino ,  Toru Nakamura

发明人： Hidekiyo Ozawa ,  Takashi Matsumoto ,  Takahiro Yoshino ,  Toru Nakamura

IPC分类号： H02J7/00

CPC分类号： H02J7/0068 ,  H02J7/0031 ,  H02J2007/0037 ,  Y10T307/625

摘要： This invention aims at providing a control circuit of power supply in which a secondary battery and a device are connected in parallel, to output capable of preventing over-charging of the secondary battery and supplying power from the secondary battery to the device, and a control method of the power supply. A device 5G and a secondary battery 2G are connected to a DC-DC converter 1G in parallel. The device 5G is supplied with both a power from the DC-DC converter 1G and a power from the secondary battery 2G. When the secondary battery 2G is in non-charging state, an offset circuit 15G supplies a positive offset for reducing a difference of voltage between a detection signal Vx1G and reference voltage e1G to a reference voltage e1G corresponding to a charging inhibit signal CAS. An error amplifier ERA1G reduces an actually flowing charging current CCG by an amount corresponding to the offset value as a result of recognizing that the charging current CCG flows more by the amount corresponding to the offset value.

摘要翻译： 本发明的目的在于提供一种电源的控制电路，其中二次电池和设备并联连接，以便输出能够防止二次电池的过充电并且从二次电池向该装置供电，以及一控制 电源方式。 设备5G和二次电池2G并联连接到DC-DC转换器1G。 设备5G被提供有来自DC-DC转换器1G的电力和来自二次电池2G的电力。 当二次电池2G处于非充电状态时，偏移电路15G将检测信号Vx1G和参考电压e1G之间的电压差减小到对应于充电禁止信号CAS的参考电压e1G提供正偏移。 误差放大器ERA1G作为识别出充电电流CCG流过与偏移值相对应的量的结果，将实际流动的充电电流CCG减小相应于偏移值的量。

公开(公告)号：US07663345B2

公开(公告)日：2010-02-16

申请号：US11512318

申请日：2006-08-30

申请人： Hidekiyo Ozawa ,  Takashi Matsumoto ,  Takahiro Yoshino

发明人： Hidekiyo Ozawa ,  Takashi Matsumoto ,  Takahiro Yoshino

IPC分类号： H02J7/04 ,  H02J7/16

CPC分类号： H02J7/0068 ,  Y10T307/587 ,  Y10T307/625

摘要： A DC-DC converter for generating a stable output voltage and being applicable to a transient load fluctuation. The DC-DC converter detects an input current, and compares the input current with a rated current of an external power supply. The DC-DC converter controls a positive charging current that is supplied to a secondary battery in accordance with a consumption current of a load so that the input current does not exceed the rated current. The DC-DC converter further controls a negative charging current that is supplied from the secondary battery to the load when the load requires an input current exceeding the rated current.

摘要翻译： 一种用于产生稳定输出电压并适用于瞬态负载波动的DC-DC转换器。 DC-DC转换器检测输入电流，并将输入电流与外部电源的额定电流进行比较。 DC-DC转换器根据负载的消耗电流控制提供给二次电池的正充电电流，使得输入电流不超过额定电流。 当负载需要超过额定电流的输入电流时，DC-DC转换器进一步控制从二次电池提供给负载的负充电电流。

公开(公告)号：US20080197821A1

公开(公告)日：2008-08-21

申请号：US12032016

申请日：2008-02-15

申请人： Morihito Hasegawa ,  Hidekiyo Ozawa

发明人： Morihito Hasegawa ,  Hidekiyo Ozawa

IPC分类号： G05F1/00

CPC分类号： H02M1/36 ,  H02M1/32 ,  H02M3/156 ,  Y10S323/901

摘要： A DC-DC conversion circuit is configured by including a plurality of control signal generation circuits, a plurality of soft-start control circuits, and a start control circuit. The plurality of control signal generation circuits correspond to the plurality of control signals, and generate a corresponding control signal of the plurality of control signals based on a corresponding output value of a plurality of output values. The plurality of soft-start control circuits correspond to the plurality of control signals, and control a variation of the corresponding control signal at a start time of the DC-DC conversion circuit. The start control circuit instructs the corresponding soft-start control circuit to start operation in accordance with a change of the control signal taking part in an output control at the start time of the DC-DC conversion circuit.

摘要翻译： DC-DC转换电路通过包括多个控制信号生成电路，多个软启动控制电路和起动控制电路构成。 多个控制信号生成电路对应于多个控制信号，并且基于多个输出值的相应输出值生成多个控制信号的对应控制信号。 多个软启动控制电路对应于多个控制信号，并且在DC-DC转换电路的开始时间控制对应的控制信号的变化。 启动控制电路指示相应的软启动控制电路根据在DC-DC转换电路的开始时间中参与输出控制的控制信号的变化而开始工作。