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公开(公告)号：US06414861B1
公开(公告)日：2002-07-02
申请号：US09726231
申请日：2000-11-29
IPC分类号： H02H7122
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A DC-DC converter having a switching element and a synchronous rectifier, the switching element undergoing a switching operation, the converter performing a voltage conversion of an input voltage to provide a converted output voltage at an output/input conversion ratio that is determined by the switching operation of said switching element, the converter delivering the converted output voltage to a load, said DC-DC converter further comprising: a reverse current detector for detecting a reverse current which flows from an output of the converter to an input of the converter, and a reverse current suppressor, the reverse current suppressor controlling the switching operation of said switching element so as to increase the output/input conversion ratio when a reverse current is detected by the reverse current detector, thereby suppressing the reverse current.
摘要翻译： 一种具有开关元件和同步整流器的DC-DC转换器，所述开关元件经历开关操作，所述转换器执行输入电压的电压转换，以提供由输出/输入转换比确定的输出/输入转换比的转换输出电压 所述开关元件的开关操作，所述转换器将转换的输出电压输送到负载，所述DC-DC转换器还包括：反向电流检测器，用于检测从所述转换器的输出流向所述转换器的输入的反向电流， 以及反向电流抑制器，所述反向电流抑制器控制所述开关元件的开关操作，以便当由所述反向电流检测器检测到反向电流时增加所述输出/输入转换比，从而抑制所述反向电流。
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公开(公告)号：US06314005B1
公开(公告)日：2001-11-06
申请号：US09392998
申请日：1999-09-09
申请人： Koji Nishi , Koji Kitamura , Hitoshi Tsuji , Takayoshi Nishiyama , Yoshihiro Matsumoto , Tadahiko Matsumoto
发明人： Koji Nishi , Koji Kitamura , Hitoshi Tsuji , Takayoshi Nishiyama , Yoshihiro Matsumoto , Tadahiko Matsumoto
IPC分类号： H02M3335
CPC分类号： H02M3/33523
摘要： A DC-DC converter includes a primary side circuit for allowing a switching device to perform on/off operations to output energy in a primary coil of a transformer to a secondary coil. A secondary side circuit rectifies and smooths a voltage outputted from the secondary coil so as to output a DC-DC voltage. A voltage-detecting circuit rectifies and smooths a voltage outputted from a voltage-detecting coil provided in the transformer so as to output the voltage as a detected voltage corresponding to a voltage to be outputted from the secondary side circuit. A control circuit applies to the switching device a pulse control signal used for controlling on/off operation of the switching device according to the voltage outputted from the voltage-detecting circuit. A primary side current-detecting circuit converts a working current in the primary side circuit, the working current corresponding to a current in the secondary side circuit, for performing detection thereof, and for superposing the thus detected voltage corresponding to the working current with the detected voltage outputted from the voltage-detecting circuit so as to compensate for an amount of variation of an output voltage of the secondary side circuit. The variation is attributed to a variation of the working current in the secondary side circuit. A voltage determined by the superposed voltage is applied to the control circuit.
摘要翻译： DC-DC转换器包括：初级侧电路，用于允许开关器件执行导通/截止操作，以将变压器的初级线圈中的能量输出到次级线圈。 次级侧电路对从次级线圈输出的电压进行整流并平滑，以输出DC-DC电压。 电压检测电路对设置在变压器中的电压检测线圈输出的电压进行整流和平滑，以将电压输出为与从次级侧电路输出的电压对应的检测电压。 控制电路根据从电压检测电路输出的电压向开关装置施加用于控制开关装置的开关动作的脉冲控制信号。 初级侧电流检测电路将初级侧电路中的工作电流，与次级侧电路中的电流相对应的工作电流进行转换，以进行检测，并将与检测到的工作电流对应的检测到的电压叠加 从电压检测电路输出的电压，以补偿次级侧电路的输出电压的变化量。 该变化归因于二次侧电路中的工作电流的变化。 将由叠加电压确定的电压施加到控制电路。
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公开(公告)号：US06757174B2
公开(公告)日：2004-06-29
申请号：US10105777
申请日：2002-03-25
IPC分类号： H05K103
CPC分类号： H01F27/2804 , H01F27/292 , H05K1/141 , H05K1/165 , H05K3/3405 , H05K3/3421 , H05K2201/086 , H05K2201/09063 , H05K2201/10386 , H05K2201/10446
摘要： A switching power-supply module includes a coil pattern of a transformer or an inductor disposed on a substrate. A portion of the coil pattern projects into an edge portion of the substrate. A plurality of terminals are arranged in the substrate edge portion so that they do not touch the coil pattern. The substrate edge portion is soaked in molten solder in the production procedure in order to fix the terminals onto the substrate with solder after components are solder-connected on the substrate. For this reason, the components were previously prohibited from being mounted in the substrate edge portion, and this region has been previously considered to be a dead space. However, in the present invention, since a portion of the coil pattern projects into the substrate edge portion, dead space is minimized, and the size of the substrate, that is, of the switching power supply module is greatly reduced.
摘要翻译： 开关电源模块包括设置在基板上的变压器或电感器的线圈图案。 线圈图案的一部分突出到基板的边缘部分。 多个端子布置在基板边缘部分中，使得它们不接触线圈图案。 在制造过程中，将基板边缘部分浸入熔融焊料中，以便在将元件焊接在基板上之后将端子固定在基板上。 因此，以前，这些部件被禁止安装在基板边缘部分中，该区域以前被认为是死空间。 然而，在本发明中，由于线圈图案的一部分突出到基板边缘部分中，所以死空间最小化，并且基板，即开关电源模块的尺寸大大降低。
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公开(公告)号：US06295214B1
公开(公告)日：2001-09-25
申请号：US09538427
申请日：2000-03-29
IPC分类号： H02M3335
CPC分类号： H02M3/33507 , H02M2001/0009
摘要： A switching power supply unit, which rectifies and smoothes an AC current and an AC voltage from the on-off switching operation of a main switching element to output a DC current and a DC voltage, has an output current detection circuit including a current detection resistor disposed in an intermittent-current flowing path through which a current intermittently flows in sync with the on-off switching operation of the main switching element, a synchronous rectifying a switching element for rectifying a current flowing through the current detection resistor, and a capacitor for charging the current rectified by the synchronous rectifying element, wherein the current flowing through the current detection resistor is charged in the capacitor by a rectifying operation of the synchronous rectifying element, and the charging voltage of the capacitor is outputted as a voltage corresponding to the output current of the switching power supply unit.
摘要翻译： 开关电源单元，其从主开关元件的开 - 关开关操作对AC电流和AC电压进行整流和平滑以输出DC电流和DC电压，具有输出电流检测电路，其包括电流检测电阻器 设置在与主开关元件的通断开关动作同步地间歇地流动的电流的间歇电流流动路径中，对流过电流检测电阻器的电流进行整流的开关元件的同步整流，以及用于 对由同步整流元件整流的电流进行充电，其中流过电流检测电阻器的电流通过同步整流元件的整流操作而被充电到电容器中，并且将电容器的充电电压输出为与输出相对应的电压 开关电源单元的电流。
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公开(公告)号：US20060164871A1
公开(公告)日：2006-07-27
申请号：US10547412
申请日：2005-02-10
IPC分类号： H02M3/335
CPC分类号： H02M1/36 , Y10S323/901
摘要： A switching power supply circuit reduces the time from start-up driving to normal operation while a soft-start is carried out with an output voltage Vout. A soft-start capacitor is charged during the start-up time. After a soft-start voltage Vz has reached a predetermined signal-output starting voltage Vlow, soft start of the output voltage Vout is carried out by controlling the operation based on the soft-start voltage Vz. A time constant for charging the soft-start capacitor is set as a time constant that causes the charge voltage of the soft-start capacitor to sharply increase at least until the soft-start voltage Vz reaches the signal-output starting voltage Vlow after the circuit has started driving, and is switched to a time constant that causes a rising trend of the charge voltage of the soft-start capacitor to become gentle with a predetermined time-constant switching timing. The start-up time is reduced by an amount equivalent to a reduction in the delay time from the start of driving to the start of voltage output.
摘要翻译： 当以输出电压Vout进行软启动时，开关电源电路将从启动驱动到正常操作的时间减少。 在启动时间内，软启动电容器被充电。 在软启动电压Vz达到预定的信号输出启动电压Vlow之后，通过控制基于软启动电压Vz的操作来执行输出电压Vout的软启动。 将软启动电容器充电的时间常数设定为使得软启动电容器的充电电压至少在软启动电压Vz达到信号输出启动电压Vlow之后至少急剧增加的时间常数 开始驱动，并切换到时间常数，使得软启动电容器的充电电压的上升趋势以预定的时间常数切换定时变得平缓。 启动时间减少相当于从开始驱动到开始输出电压的延迟时间的减少量。
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公开(公告)号：US07158394B2
公开(公告)日：2007-01-02
申请号：US10547412
申请日：2005-02-10
CPC分类号： H02M1/36 , Y10S323/901
摘要： A switching power supply circuit reduces the time from start-up driving to normal operation while a soft-start is carried out with an output voltage Vout. A soft-start capacitor is charged during the start-up time. After a soft-start voltage Vz has reached a predetermined signal-output starting voltage Vlow, soft start of the output voltage Vout is carried out by controlling the operation based on the soft-start voltage Vz. A time constant for charging the soft-start capacitor is set as a time constant that causes the charge voltage of the soft-start capacitor to sharply increase at least until the soft-start voltage Vz reaches the signal-output starting voltage Vlow after the circuit has started driving, and is switched to a time constant that causes a rising trend of the charge voltage of the soft-start capacitor to become gentle with a predetermined time-constant switching timing. The start-up time is reduced by an amount equivalent to a reduction in the delay time from the start of driving to the start of voltage output.
摘要翻译： 当以输出电压Vout进行软启动时，开关电源电路将从启动驱动到正常操作的时间减少。 在启动时间内，软启动电容器被充电。 在软启动电压Vz达到预定的信号输出启动电压Vlow之后，通过控制基于软启动电压Vz的操作来执行输出电压Vout的软启动。 将软启动电容器充电的时间常数设定为使得软启动电容器的充电电压至少在软启动电压Vz达到信号输出启动电压Vlow之后至少急剧增加的时间常数 开始驱动，并切换到时间常数，使得软启动电容器的充电电压的上升趋势以预定的时间常数切换定时变得平缓。 启动时间减少相当于从开始驱动到开始输出电压的延迟时间的减少量。
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7.发明授权Surface-mount type switching power-supply unit and mounting method for the same 有权表面贴装式开关电源装置及其安装方法公开(公告)号：US06876555B2
公开(公告)日：2005-04-05
申请号：US10208944
申请日：2002-08-01
IPC分类号： H05K1/18 , H01F27/02 , H01F27/29 , H02M7/06 , H05K1/14 , H05K1/16 , H05K3/30 , H05K3/34 , H05K7/06
CPC分类号： H05K3/303 , H01F27/027 , H01F27/292 , H05K1/141 , H05K1/165 , H05K1/182 , H05K3/3421 , H05K2203/0195 , H05K2203/082 , Y02P70/613 , Y10T29/4913 , Y10T29/53191
摘要： A transformer of a switching power-supply circuit is placed and mounted nearly in the middle area of a circuit board. The transformer is of a low-profile type, and a broad and flat upper surface of the transformer functions as a suction surface for a suction nozzle. When a surface-mount type switching power-supply unit is mounted in a mother board, firstly, the upper surface of the above transformer is held by the suction nozzle, the surface-mount type switching power-supply unit is transferred to a target mounting area on the mother board by the suction nozzle, and the surface-mount type switching power-supply unit is surface mounted in the mother board. Because it is not required to provide a nozzle suction surface for the suction nozzle's exclusive use, transfer molding is not needed, and accordingly a low-profile and low-cost surface-mount type switching power-supply unit can be facilitated.
摘要翻译： 开关电源电路的变压器放置并几乎安装在电路板的中间区域。 变压器是一种薄型，并且变压器的宽而平坦的上表面用作吸嘴的吸力表面。 当表面安装型开关电源单元安装在母板上时，首先，上述变压器的上表面由吸嘴保持，表面安装型开关电源单元被转移到目标安装 通过吸嘴将母板上的区域，表面安装型开关电源单元表面安装在母板上。 由于不需要为吸嘴专门使用喷嘴吸附面，因此不需要传递成型，因此可以促进薄型和低成本的表面贴装型开关电源单元。
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8.发明授权公开(公告)号：US07852647B2
公开(公告)日：2010-12-14
申请号：US12760628
申请日：2010-04-15
申请人： Takayoshi Nishiyama , Takashi Hara , Koichi Ueki
发明人： Takayoshi Nishiyama , Takashi Hara , Koichi Ueki
CPC分类号： H02M1/40 , H02M3/33515 , H02M3/3376 , H02M2001/0012
摘要： A switching power supply apparatus includes a transformer or an inductor, a switching element connected to the transformer or the inductor and configured to perform switching of an input power supply, and a switching control circuit including a digital control circuit configured to sample voltage values and/or current values and control on and off of the switching element in accordance with the voltage values and/or current values. The number of points of sampling is set to n or more points, where n is an integer greater than 3, in an ON period of the switching element except at around a turn-on point or a turn-off point of the switching element. The presence or absence of magnetic saturation of the transformer or the inductor is detected on the basis of whether or not a slope of change in current value over time is larger than a predetermined value, and circuit operation is protected from the effect of magnetic saturation. Thus, the presence or absence of magnetic saturation can be rapidly and precisely detected without the influence of switching noise.
摘要翻译： 开关电源装置包括变压器或电感器，连接到变压器或电感器并且被配置为执行输入电源的切换的开关元件以及包括数字控制电路的开关控制电路，该数字控制电路被配置为对电压值和/ 或当前值，并根据电压值和/或电流值控制开关元件的导通和关断。 在开关元件的导通周期内，除了开关元件的导通点或关断点之外，将采样点数设定为n以上，其中n为大于3的整数。 基于电流值随时间变化的斜率是否大于预定值来检测变压器或电感器的磁饱和的存在或不存在，并且保护电路操作免受磁饱和的影响。 因此，不受开关噪声的影响，可以快速，精确地检测磁饱和的存在或不存在。
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公开(公告)号：US07868584B2
公开(公告)日：2011-01-11
申请号：US12839461
申请日：2010-07-20
申请人： Takashi Hara , Takayoshi Nishiyama , Koichi Ueki
发明人： Takashi Hara , Takayoshi Nishiyama , Koichi Ueki
CPC分类号： H02M3/33592 , B60L11/14 , B60L11/1864 , B60L2210/10 , H02J7/0054 , H02J7/1423 , H02J2007/0059 , Y02T10/70 , Y02T10/7016 , Y02T10/7061 , Y02T10/7077 , Y02T10/7216 , Y02T10/92
摘要： A DC-DC converter includes an inductor, a capacitor, an output voltage detection circuit, and a synchronous rectification circuit including a rectifier-side synchronous rectifier element and a commutator-side synchronous rectifier element. The commutator-side synchronous rectifier element is turned on so as to pass a current through a closed loop composed of the commutator-side synchronous rectifier element, the inductor, and a second secondary battery. The characteristic evaluation of the second secondary battery is performed on the basis of the decrease in a detection voltage Vout of an output voltage Vo. As a result, it is possible to determine the effective capacity or characteristic degradation state of the second secondary battery with a circuit to charge the second secondary battery without using a dedicated circuit.
摘要翻译： DC-DC转换器包括电感器，电容器，输出电压检测电路和包括整流器侧同步整流元件和换向器侧同步整流元件的同步整流电路。 换向器侧同步整流元件导通，以使电流通过由换向器侧同步整流元件，电感器和第二二次电池组成的闭环。 基于输出电压Vo的检测电压Vout的降低来进行第二二次电池的特性评价。 结果，可以在不使用专用电路的情况下利用对第二二次电池充电的电路来确定第二二次电池的有效容量或特性劣化状态。
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公开(公告)号：US20080170418A1
公开(公告)日：2008-07-17
申请号：US11961284
申请日：2007-12-20
IPC分类号： H02M3/335
CPC分类号： H02M3/337 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A DC-DC converter includes a resonant coil (Lr) for zero voltage switching, the resonant coil being connected in series to a primary winding (Np), and a full-bridge switching circuit driven by phase shift control. The DC-DC converter includes a first regenerative diode (D7) disposed between a connection between the primary winding (Np) and the resonant coil (Lr) and a first terminal of an input power supply (Vin) and a second regenerative diode (D8) disposed between the connection and a second terminal of the input power supply (Vin). This structure enables a surge resulting from a reverse recovery current in rectifier diodes (D1, D2) at the secondary side to be regenerated to the input power supply via the regenerative diodes (D7, D8), thus reducing a surge voltage applied to the rectifier diodes (D1, D2). As a result, a rectifier diode that has a low breakdown voltage and a small forward voltage drop can be used. The loss caused by a forward current in the rectifier diodes can be reduced. Additionally, the loss in the regenerative diodes (D7, D8) can also be reduced, compared with when a snubber circuit is provided in the secondary side.
摘要翻译： DC-DC转换器包括用于零电压开关的谐振线圈（Lr），谐振线圈与初级绕组（Np）串联连接，以及通过相移控制驱动的全桥开关电路。 DC-DC转换器包括设置在初级绕组（Np）和谐振线圈（Lr）之间的连接和输入电源（Vin）和第二再生二极管（Vin）的第一端子之间的第一再生二极管（D 7） D8）设置在输入电源（Vin）的连接和第二端子之间。 这种结构使得在次级侧的整流二极管（D1，D2）中的反向恢复电流产生的浪涌将通过再生二极管（D 7，D 8）再生成输入电源，从而降低浪涌电压 施加到整流二极管（D1，D2）。 因此，可以使用具有低击穿电压和小正向压降的整流二极管。 可以减少由整流二极管中的正向电流引起的损耗。 此外，与在次级侧设置缓冲电路相比，再生二极管（D 7，D 8）的损耗也可以减小。
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