公开(公告)号：US07474086B2

公开(公告)日：2009-01-06

申请号：US11583012

申请日：2006-10-19

Applicant: Jiun-Chiang Chen ,  Liang-Pin Tai

Inventor： Jiun-Chiang Chen ,  Liang-Pin Tai

IPC: G05F1/40 ,  G05F1/56 ,  G05F1/618

CPC classification number: H02M3/156 ,  H02M3/1584 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A control circuit and method are provided to generate a modulation signal to operate a power stage in a DC/DC PWM converter such that the DC/DC PWM converter is controlled to operate with high switching frequency in light load stead state, once load transient happens, it still operates with high switching frequency for good transient response, and in heavy load stead state, it is controlled to operate with low switching frequency for good efficiency.

Abstract translation: 提供控制电路和方法来产生调制信号以在DC / DC PWM转换器中操作功率级，使得DC / DC PWM转换器被控制为在轻负载状态下以高开关频率工作，一旦发生负载瞬变 ，它仍然以高开关频率运行，具有良好的瞬态响应，并且在重负载状态下，它被控制为以低开关频率工作以获得高效率。

公开(公告)号：US20070176581A1

公开(公告)日：2007-08-02

申请号：US11657003

申请日：2007-01-24

Applicant: Jiun-Chiang Chen ,  Liang-Pin Tai

Inventor： Jiun-Chiang Chen ,  Liang-Pin Tai

IPC: G05F1/00

CPC classification number: H02M3/1584

Abstract: For a DC-to-DC converter including a plurality of channels for converting an input voltage to an output voltage, a control circuit comprises a load transient detector to detect the output voltage to provide a quick response signal. In a load transient, the quick response signal triggers a quick transient response period to increase the operational frequency of the converter.

Abstract translation: 对于包括用于将输入电压转换为输出电压的多个通道的DC-DC转换器，控制电路包括检测输出电压以提供快速响应信号的负载瞬变检测器。 在负载瞬变中，快速响应信号触发快速的瞬态响应周期以增加转换器的工作频率。

公开(公告)号：US20070146046A1

公开(公告)日：2007-06-28

申请号：US11708326

申请日：2007-02-21

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

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

IPC: H03K17/687

CPC classification number: H02M3/158 ,  H02M3/155 ,  H03K17/063 ,  H03K17/6871 ,  H03K17/693 ,  H03K2017/6875

Abstract: 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.

Abstract translation: 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：US07233191B2

公开(公告)日：2007-06-19

申请号：US11128200

申请日：2005-05-13

Applicant: Hung-I Wang ,  Liang-Pin Tai

Inventor： Hung-I Wang ,  Liang-Pin Tai

IPC: H03K17/687

CPC classification number: H03K17/04123 ,  H03K17/063

Abstract: To turn on a JFET, a two-stage turn-on current control is employed in a JFET driver circuit and a JFET driving method, by which a shortly pulsed high sourcing current is provided to turn on the JFET rapidly and efficiently, and a continuous low sourcing current is provided after the JFET turns on for reducing the power dissipation. After the JFET turns off, a negative charge pump is also employed to promise the JFET at a turn-off state. A special power sequence is further employed to ensure the JFET could be turned off during the power supply coupled to the JFET starts up.

Abstract translation: 为了打开JFET，在JFET驱动电路和JFET驱动方法中采用两级导通电流控制，通过该方法提供短脉冲高电源电流以快速有效地接通JFET，并且连续 在JFET导通之后提供低电源电流，以降低功耗。 在JFET关断之后，还使用负电荷泵来保证JFET处于关断状态。 进一步采用特殊的电源顺序，以确保在JFET启动的电源期间可以关断JFET。

公开(公告)号：US07023253B2

公开(公告)日：2006-04-04

申请号：US10882159

申请日：2004-07-02

Applicant: Jian-Rong Huang ,  Kuo-Ping Liu ,  Kent Huang ,  Liang-Pin Tai

Inventor： Jian-Rong Huang ,  Kuo-Ping Liu ,  Kent Huang ,  Liang-Pin Tai

IPC: H03K5/00

CPC classification number: H03F3/217 ,  H02M3/1588 ,  H03K7/08 ,  Y02B70/1466

Abstract: In a noise sensitivity improved switching system and method thereof, comprised sensing the output voltage of the switching system to generate a feedback signal, respectively amplifying the feedback signal by two gains to generate two signals in phase or out of phase, filtering one of the two amplified signals, and summing or comparing the filtered signal and the other one, thereby reducing the noise interference to the switching system.

Abstract translation: 在噪声敏感度改进的开关系统及其方法中，包括感测开关系统的输出电压以产生反馈信号，分别通过两个增益来放大反馈信号以产生相或异相的两个信号，滤波两个 放大信号，并对滤波后的信号进行求和或比较，从而降低对交换系统的噪声干扰。

公开(公告)号：US06946823B2

公开(公告)日：2005-09-20

申请号：US10846601

申请日：2004-05-17

Applicant: Kent Huang ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Yu-Fan Liao

Inventor： Kent Huang ,  Liang-Pin Tai ,  Hung-I Wang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Yu-Fan Liao

IPC: H02M3/158 ,  G05F1/575

CPC classification number: H02M3/1588 ,  Y02B70/1466

Abstract: A delta-sigma DC-to-DC converter comprises a pair of high-side and low-side switches switched to convert an input voltage to an output voltage, a sense circuit to sense the output voltage of the converter to generate a feedback signal, a transconductive amplifier to amplify a difference between the feedback signal and a threshold signal to generate a differential current, a charging circuit connected with the differential current to generate a charging voltage, and a driver to compare the charging voltage with two reference signals to generate the pair of low-side and high-side driving signals.

Abstract translation: Δ-ΣDC-DC转换器包括一对开关将输入电压转换为输出电压的高侧和低侧开关，感测电路以感测转换器的输出电压以产生反馈信号， 用于放大反馈信号和阈值信号之间的差异以产生差分电流的跨导放大器，与差分电流连接以产生充电电压的充电电路，以及将充电电压与两个参考信号进行比较的驱动器，以产生 一对低侧和高侧驱动信号。

公开(公告)号：US07838902B2

公开(公告)日：2010-11-23

申请号：US12385721

申请日：2009-04-17

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

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

IPC: H01L29/74 ,  H01L31/111

CPC classification number: H01L27/098 ,  H01L27/0744 ,  H01L29/7722 ,  H01L29/8083

Abstract: 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：US20080310194A1

公开(公告)日：2008-12-18

申请号：US12155771

申请日：2008-06-10

Applicant: Pei-Lun Huang ,  Liang-Pin Tai

Inventor： Pei-Lun Huang ,  Liang-Pin Tai

IPC: H02M3/335

CPC classification number: H02M3/33507

Abstract: A method and apparatus are provided for a switching mode converter to improve the light load efficiency thereof. The converter is thus operated with three modes by monitoring a feedback signal and a supply voltage. When the feedback signal indicates that loading gets light enough, the converter is switched from the first mode to the second mode, and during the second mode some cycles are skipped. If loading is too light, the converter is switched from the second mode to the third mode, and during the third mode more cycles will be skipped.

Abstract translation: 提供了一种用于开关模式转换器以提高其轻负载效率的方法和装置。 因此，通过监视反馈信号和电源电压，转换器通过三种模式运行。 当反馈信号指示负载变得足够亮时，转换器从第一模式切换到第二模式，并且在第二模式期间，跳过一些周期。 如果负载太轻，则转换器从第二模式切换到第三模式，而在第三模式期间，将跳过更多的周期。

公开(公告)号：US20070252636A1

公开(公告)日：2007-11-01

申请号：US11822169

申请日：2007-07-03

Applicant: Liang-Pin Tai ,  Jiun-Chiang Chen

Inventor： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC: H03K17/687

CPC classification number: H03K17/6871 ,  H03K17/693

Abstract: A switching circuit uses multiple common-drain JFETs to serve as the low-side switches of the switching circuit, and each of the low-side JFET is coupled between a high-side switch and a power node. Since a JFET can endure high voltage at both drain side and source side, and has good heat dissipation capability at drain side, the drain of the low-side JFET is coupled to the power node to enhance the heat dissipation capability and accordingly, all the low-side JFETs are allowed to be packaged in a same package to reduce the PCB layout area.

公开(公告)号：US20070241733A1

公开(公告)日：2007-10-18

申请号：US11583012

申请日：2006-10-19

Applicant: Jiun-Chiang Chen ,  Liang-Pin Tai

Inventor： Jiun-Chiang Chen ,  Liang-Pin Tai

IPC: G05F1/00

CPC classification number: H02M3/156 ,  H02M3/1584 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A control circuit and method are provided to generate a modulation signal to operate a power stage in a DC/DC PWM converter such that the DC/DC PWM converter is controlled to operate with high switching frequency in light load stead state, once load transient happens, it still operates with high switching frequency for good transient response, and in heavy load stead state, it is controlled to operate with low switching frequency for good efficiency.

Abstract translation: 提供控制电路和方法来产生调制信号以在DC / DC PWM转换器中操作功率级，使得DC / DC PWM转换器被控制为在轻负载状态下以高开关频率工作，一旦发生负载瞬变 ，它仍然以高开关频率运行，具有良好的瞬态响应，并且在重负载状态下，它被控制为以低开关频率工作以获得高效率。