公开(公告)号：US06839252B2

公开(公告)日：2005-01-04

申请号：US10442077

申请日：2003-05-21

申请人： Liang-Pin Tai ,  Shwu-Liang Hsieh ,  Hung-I Wang ,  Jing-Meng Liu

发明人： Liang-Pin Tai ,  Shwu-Liang Hsieh ,  Hung-I Wang ,  Jing-Meng Liu

IPC分类号： H02M3/158 ,  H02M7/00 ,  G05F1/40

CPC分类号： H02M3/1584 ,  H02M2001/0029

摘要： A two-step ripple-free multi-phase buck converter and method thereof comprises a first-stage voltage regulator to convert an input voltage to an intermediate voltage and a second-stage voltage regulator with a phase number not less than two to further convert the intermediate voltage to an output voltage by a split phase control, in which the ratio of the intermediate voltage to the output voltage is intended to the phase number such that the steady state output current of the converter approaches to be ripple-free, and hence the drivers and MOSFETs for the second-stage voltage regulator are lower cost, the efficiency of the second-stage voltage regulator is improved, and a higher slew rate current is obtained for transient driving capabilities.

摘要翻译： 两级无纹波多相降压转换器及其方法包括将输入电压转换为中间电压的第一级电压调节器和相位数不少于2的第二级稳压器，以进一步转换 通过分相控制将中间电压输出到输出电压，其中中间电压与输出电压的比率旨在达到相位数，使得转换器的稳态输出电流接近无波纹，因此 第二级稳压器的驱动器和MOSFET的成本较低，二级稳压器的效率得到提高，瞬态驱动能力可获得更高的转换速率电流。

公开(公告)号：US06876190B2

公开(公告)日：2005-04-05

申请号：US10820730

申请日：2004-04-09

申请人： Liang-Pin Tai ,  Shwu-Liang Hsieh ,  Hung-I Wang ,  Jing-Meng Liu

发明人： Liang-Pin Tai ,  Shwu-Liang Hsieh ,  Hung-I Wang ,  Jing-Meng Liu

IPC分类号： G01R19/00 ,  H02M3/158 ,  G01R33/00

CPC分类号： G01R19/0092 ,  H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

摘要： A current sense apparatus and method comprises a common drain DMOSFET and a MOSFET connected in series between a high voltage and a low voltage to serve as an output stage. The DMOSFET produces a phase output current, a mirror current mirrored from the phase output current, and a sense voltage. A servo amplifier is connected with the mirror current and sense voltage to produce a current sense signal. Due to the mirror current from the DMOSFET proportional to the phase output current, the current sense apparatus senses the phase output current in a temperature independent manner.

摘要翻译： 电流检测装置和方法包括在高电压和低电压之间串联连接的公共漏极DMOSFET和MOSFET，用作输出级。 DMOSFET产生相输出电流，从相输出电流镜像的镜电流和感测电压。 伺服放大器与反射镜电流和感测电压连接，产生电流检测信号。 由于来自DMOSFET的反射电流与相输出电流成比例，电流检测装置以独立于温度的方式感测相输出电流。

公开(公告)号：US06801030B2

公开(公告)日：2004-10-05

申请号：US10442084

申请日：2003-05-21

申请人： Liang-Pin Tai ,  Shwu-Liang Hsieh ,  Hung-I Wang ,  Jing-Meng Liu

发明人： Liang-Pin Tai ,  Shwu-Liang Hsieh ,  Hung-I Wang ,  Jing-Meng Liu

IPC分类号： G01R3300

CPC分类号： G01R19/0092 ,  H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

摘要： A current sense apparatus and method comprises a common drain DMOSFET and a MOSFET connected in series between a high voltage and a low voltage to serve as an output stage. The DMOSFET produces a phase output current, a mirror current mirrored from the phase output current, and a sense voltage. A servo amplifier is connected with the mirror current and sense voltage to produce a current sense signal. Due to the mirror current from the DMOSFET proportional to the phase output current, the current sense apparatus senses the phase output current in a temperature independent manner.

摘要翻译： 电流检测装置和方法包括在高电压和低电压之间串联连接的公共漏极DMOSFET和MOSFET，用作输出级。 DMOSFET产生相输出电流，从相输出电流镜像的镜电流和感测电压。 伺服放大器与反射镜电流和感测电压连接，产生电流检测信号。 由于来自DMOSFET的反射电流与相输出电流成比例，电流检测装置以独立于温度的方式感测相输出电流。

公开(公告)号：US06670794B1

公开(公告)日：2003-12-30

申请号：US10193119

申请日：2002-07-12

申请人： Hung-I Wang ,  Shwu-Liang Hsieh ,  Liang-Pin Tai ,  Jing-Meng Liu

发明人： Hung-I Wang ,  Shwu-Liang Hsieh ,  Liang-Pin Tai ,  Jing-Meng Liu

IPC分类号： G05F170

CPC分类号： H02M3/1584

摘要： To balance the current of individual channel as well as regulate the output voltage for a multi-phase DC-to-DC buck converter, the converter output voltage is sensed and compared with a reference signal to produce a first error signal serving as first control signal for PWM signals of the converter and the channel currents are sensed, summed, averaged and subtracted to produce second error signals that are further modified by saw-tooth wave signal to produce second control signals for the PWM signals. Moreover, the reference signal is controlled by the summed channel currents for adjustable load regulation.

摘要翻译： 为了平衡单个通道的电流以及调节多相DC-DC降压转换器的输出电压，转换器输出电压被检测并与参考信号进行比较，以产生用作第一控制信号的第一误差信号 对于转换器的PWM信号和通道电流被感测，相加，平均和相减，以产生第二误差信号，其进一步被锯齿波信号修改以产生用于PWM信号的第二控制信号。 此外，参考信号由可调负载调节的总和通道电流控制。

公开(公告)号：US06414470B1

公开(公告)日：2002-07-02

申请号：US10051136

申请日：2002-01-22

申请人： Jing-Meng Liu ,  Liang-Pin Tai ,  Hung-I Wang

发明人： Jing-Meng Liu ,  Liang-Pin Tai ,  Hung-I Wang

IPC分类号： G05F140

CPC分类号： H02M3/1584 ,  H02J1/102

摘要： An apparatus and method for current balance in a multi-phase DC-to-DC converter with a converter output voltage and a plurality of channel currents employs for each channel a multi-input pulse width modulator or an ordinary pulse width modulator in conjunction with a multi-input comparator to produce a respective PWM signal to regulate the corresponding channel current. In addition to the comparison of the converter output voltage with a reference signal to produce an error signal, the apparatus and method compares the error signal with a ramp signal and the corresponding channel current with each of the other channel currents with the multi-input pulse width modulator. Alternatively, a ramp signal is compared by the ordinary pulse width modulator with a signal derived from the multi-input comparator which subtracts the corresponding channel current from each other channel current and sums the error signal.

摘要翻译： 具有转换器输出电压和多个通道电流的多相DC-DC转换器中的电流平衡的装置和方法为每个通道使用多输入脉宽调制器或普通脉冲宽度调制器 多输入比较器产生相应的PWM信号来调节相应的通道电流。 除了将转换器输出电压与参考信号进行比较以产生误差信号之外，装置和方法还将误差信号与斜波信号和相应的通道电流与多输入脉冲中的每一个通道电流进行比较 宽度调制器 或者，通过普通脉冲宽度调制器将斜坡信号与从多输入比较器导出的信号进行比较，该信号从彼此的通道电流中减去对应的通道电流，并对误差信号求和。

公开(公告)号：US07838902B2

公开(公告)日：2010-11-23

申请号：US12385721

申请日：2009-04-17

申请人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

发明人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

IPC分类号： H01L29/74 ,  H01L31/111

CPC分类号： H01L27/098 ,  H01L27/0744 ,  H01L29/7722 ,  H01L29/8083

摘要： A single-chip common-drain JFET device comprises a drain, two gates and two source arranged such that two common-drain JFETs are formed therewith. Due to the two JFETs merged within a single chip, no wire bonding connection is needed therebetween, thereby without parasitic inductance and resistance caused by bonding wire, and therefore improving the performance and reducing the package cost. The single-chip common-drain JFET device may be applied in buck converter, boost converter, inverting converter, switch, and two-step DC-to-DC converter to improve their performance and efficiency. Alternative single-chip common-drain JFET devices are also provided for current sense or proportional current generation.

公开(公告)号：US07838900B2

公开(公告)日：2010-11-23

申请号：US12385718

申请日：2009-04-17

申请人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

发明人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

IPC分类号： H01L29/74 ,  H01L31/111

CPC分类号： H01L27/098 ,  H01L27/0744 ,  H01L29/7722 ,  H01L29/8083

摘要： A single-chip common-drain JFET device comprises a Drain, two gates and two source arranged such that two common-drain JFETs are formed therewith. Due to the two JFETs merged within a single chip, no wire bonding connection is needed therebetween, thereby without parasitic inductance and resistance caused by bonding wire, and therefore improving the performance and reducing the package cost. The single-chip common-drain JFET device may be applied in buck converter, boost converter, inverting converter, switch, and two-step DC-to-DC converter to improve their performance and efficiency. Alternative single-chip common-drain JFET devices are also provided for current sense or proportional current generation.

摘要翻译： 单芯片公共漏极JFET器件包括漏极，两个栅极和两个源极，使得与其形成两个公共漏极JFET。 由于在单个芯片内合并的两个JFET，其间不需要引线接合连接，因此没有由接合线引起的寄生电感和电阻，因此提高性能并降低封装成本。 单片式公共漏极JFET器件可以应用于降压转换器，升压转换器，反相转换器，开关和两级DC-DC转换器，以提高其性能和效率。 还提供了用于电流感测或比例电流产生的替代单芯片公共漏极JFET器件。

公开(公告)号：US20090201079A1

公开(公告)日：2009-08-13

申请号：US12385720

申请日：2009-04-17

申请人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

发明人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

IPC分类号： G05F3/02

CPC分类号： H01L27/098 ,  H01L27/0744 ,  H01L29/7722 ,  H01L29/8083

摘要： A single-chip common-drain JFET device comprises a drain, two gates and two source arranged such that two common-drain JFETs are formed therewith. Due to the two JFETs merged within a single chip, no wire bonding connection is needed therebetween, thereby without parasitic inductance and resistance caused by bonding wire, and therefore improving the performance and reducing the package cost. The single-chip common-drain JFET device may be applied in buck converter, boost converter, inverting converter, switch, and two-step DC-to-DC converter to improve their performance and efficiency. Alternative single-chip common-drain JFET devices are also provided for current sense or proportional current generation.

公开(公告)号：US20060055446A1

公开(公告)日：2006-03-16

申请号：US11220556

申请日：2005-09-08

申请人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

发明人： Liang-Pin Tai ,  Jing-Meng Liu ,  Hung-Der Su

IPC分类号： H03K17/687

CPC分类号： H02M3/158 ,  H02M3/155 ,  H03K17/063 ,  H03K17/6871 ,  H03K17/693 ,  H03K2017/6875

摘要： Electronic circuits use low-cost depletion-mode JFET to serve as power switch. Since depletion-mode JFET has smaller conductive resistance and is majority carrier device, the energy loss is less when current flows through the depletion-mode JFET, and faster switching speed is obtained, thereby enhancing the efficiency of the electronic circuits.

摘要翻译： 电子电路使用低成本耗尽型JFET作为电源开关。 由于耗尽型JFET具有较小的导电电阻并且是多数载流子器件，所以当电流流过耗尽型JFET时能量损失较小，并且获得更快的开关速度，从而提高电子电路的效率。

公开(公告)号：US06927960B2

公开(公告)日：2005-08-09

申请号：US10282062

申请日：2002-10-29

申请人： Jian-Rong Huang ,  Liang-Pin Tai ,  Jing-Meng Liu

发明人： Jian-Rong Huang ,  Liang-Pin Tai ,  Jing-Meng Liu

IPC分类号： H02H5/04

CPC分类号： H02H5/041

摘要： A circuit protection device includes an overheat protecting circuit connected to a main circuit and capable of being activated so as to shut down the main circuit when operating temperature of the main circuit reaches a predetermined value, and a current limiting circuit connected to the main circuit for preventing current through the main circuit from exceeding a predetermined threshold value. The current limiting circuit is further connected to the overheat protecting circuit and controls activation of the overheat protecting circuit when the current through the main circuit reaches the predetermined threshold value. Therefore, erroneous operation of the circuit protection device due to a shift in component characteristics of the overheat protecting circuit attributed to limitations in fabrication can be avoided.

摘要翻译： 电路保护装置包括：连接到主电路并且能够被激活以在主电路的工作温度达到预定值时关闭主电路的过热保护电路;以及连接到主电路的限流电路， 防止通过主电路的电流超过预定阈值。 当流过主电路的电流达到预定阈值时，电流限制电路进一步连接到过热保护电路，并控制过热保护电路的启动。 因此，可以避免由于制造中的限制而引起的过热保护电路的部件特性偏移导致的电路保护装置的错误操作。