公开(公告)号：US20060261790A1

公开(公告)日：2006-11-23

申请号：US11183611

申请日：2005-07-18

Applicant: Liang-Pin Tai ,  Chun-Tsung Chen ,  Chin-Chiang Yeh ,  Po-Shun Chung ,  Kwan-Jen Chu ,  Chung-Lung Pai

Inventor： Liang-Pin Tai ,  Chun-Tsung Chen ,  Chin-Chiang Yeh ,  Po-Shun Chung ,  Kwan-Jen Chu ,  Chung-Lung Pai

IPC: G05F1/00

CPC classification number: G05F1/575 ,  H02M2001/0045

Abstract: A direct current voltage boosting/bucking device includes a direct current voltage boosting circuit and a low drop-out (LDO) linear voltage converting circuit. The direct current voltage boosting circuit boosts an input voltage so as to generate an output voltage higher than the input voltage. The LDO linear voltage converting circuit converts the output voltage into a load voltage that is to be provided to a load, and controls the direct current voltage boosting circuit in accordance with a feedback signal from the load such that the output voltage and the load voltage have a minimum drop-out voltage differential therebetween and such that current flow through the load is maintained at a determined level.

Abstract translation: 直流升压/降压装置包括直流升压电路和低压降（LDO）线性电压转换电路。 直流升压电路提高输入电压，以产生高于输入电压的输出电压。 LDO线性电压转换电路将输出电压转换为要提供给负载的负载电压，并且根据来自负载的反馈信号控制直流升压电路，使得输出电压和负载电压具有 在它们之间的最小脱出电压差，并且使得通过负载的电流保持在确定的水平。

公开(公告)号：US07026800B2

公开(公告)日：2006-04-11

申请号：US10683395

申请日：2003-10-14

Applicant: Jing-Meng Liu ,  Liang-Pin Tai ,  Der-Jiunn Wang

Inventor： Jing-Meng Liu ,  Liang-Pin Tai ,  Der-Jiunn Wang

IPC: G05F1/40 ,  H02M1/12

CPC classification number: H02M3/156

Abstract: In a method for a DC-DC power conversion performed by a switching mode buck voltage converter, the power conversion is split into two or more stages, and a feed-forward signal is generated by one of the stages and sent to another stage prior thereto. The feed-forward signal is generated by responding to a load current transient, such as output voltage drop, ON-duty increment or decrement occurred in the PWM control loop, error amp output swinging, and any other detectable signals in response to load current transient of the voltage converter. As a result, the performance of the DC-DC voltage converter is improved due to the prior stage modulated early in time, and both lower ripple current and peak current in steady state operations and fast response to load current transient conditions could be simultaneously obtained.

Abstract translation: 在由开关模式降压电压转换器执行的DC-DC功率转换的方法中，功率转换被分为两级或更多级，并且前级信号由其中一级产生并发送到其之前的另一级 。 前馈信号通过响应负载电流瞬变而产生，例如输出电压降，PWM控制环中发生的占空比增量或减量，误差放大器输出摆幅以及响应于负载电流瞬变的任何其他可检测信号 的电压转换器。 结果，由于早期调制了DC-DC电压转换器的性能，可以同时获得稳态运行中的较低纹波电流和峰值电流以及对负载电流瞬态条件的快速响应。

公开(公告)号：US20050285118A1

公开(公告)日：2005-12-29

申请号：US11159245

申请日：2005-06-23

Applicant: Liang-Pin Tai ,  Jiun-Chiang Chen

Inventor： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC: H01L29/15 ,  H03K17/687 ,  H03K17/693

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.

Abstract translation: 开关电路使用多个公共漏极JFET作为开关电路的低侧开关，并且每个低侧JFET耦合在高侧开关和功率节点之间。 由于JFET可以在漏极侧和源极侧承受高电压，并且在漏极侧具有良好的散热能力，因此低边JFET的漏极耦合到电源节点以增强散热能力，因此， 低边JFET可以封装在相同的封装中，以减少PCB布局面积。

公开(公告)号：US20050258813A1

公开(公告)日：2005-11-24

申请号：US10850164

申请日：2004-05-21

Applicant: Liang-Pin Tai ,  Kent Hwang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Cheng-Hsuan Fan ,  Ko-Cheng Wang ,  Yu-Fan Liao

Inventor： Liang-Pin Tai ,  Kent Hwang ,  Jian-Rong Huang ,  Kuo-Ping Liu ,  Cheng-Hsuan Fan ,  Ko-Cheng Wang ,  Yu-Fan Liao

IPC: G05F1/40 ,  G05F1/44 ,  H02M1/08

CPC classification number: H02M1/08

Abstract: A pulse width modulator includes an amplifier module, a comparator module, and a filter module. The amplifier module receives a feedback voltage signal from a passive network, and generates first and second non-inverted voltage signals and first and second inverted voltage signals in response to the feedback voltage signal. The comparator module receives the first and second non-inverted voltage signals and the first and second inverted voltage signals, and provides first and second differential voltage signals corresponding to the first and second non-inverted voltage signals and the first and second inverted voltage signals. The filter module is coupled between the amplifier module and the comparator module, and is operable so as to attenuate high frequency components of the first and second non-inverted voltage signals. As such, the presence of noise in the feedback voltage signal does not affect differential operation of the comparator module.

Abstract translation: 脉冲宽度调制器包括放大器模块，比较器模块和滤波器模块。 放大器模块从无源网络接收反馈电压信号，并响应于反馈电压信号产生第一和第二非反相电压信号以及第一和第二反相电压信号。 比较器模块接收第一和第二非反相电压信号以及第一和第二反相电压信号，并提供对应于第一和第二非反相电压信号以及第一和第二反相电压信号的第一和第二差分电压信号。 滤波器模块耦合在放大器模块和比较器模块之间，并且可操作以便衰减第一和第二非反相电压信号的高频分量。 因此，反馈电压信号中的噪声的存在不会影响比较器模块的差分工作。

公开(公告)号：US20050258458A1

公开(公告)日：2005-11-24

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: H01L29/80 ,  H03K17/0412 ,  H03K17/06

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：US20050253567A1

公开(公告)日：2005-11-17

申请号：US11114060

申请日：2005-04-26

Applicant: Liang-Pin Tai ,  Jiun-Chiang Chen

Inventor： Liang-Pin Tai ,  Jiun-Chiang Chen

IPC: G05F1/40 ,  H02M3/158

CPC classification number: H02M3/1584 ,  H02M2001/007

Abstract: A two-step DC-to-DC converter comprises a first converter stage for converting a first voltage to a second voltage, and a second converter stage for converting the second voltage to an output voltage. The first converter stage uses a MOSFET or normally-off JFET to serve as a high-side switch, and the second converter stage comprises a multi-phase modulator using a normally-on JFET to serve as a high-side switch, thereby improving the efficiency of the two-step DC-to-DC converter.

Abstract translation: 两级DC-DC转换器包括用于将第一电压转换为第二电压的第一转换器级和用于将第二电压转换为输出电压的第二转换级。 第一转换器级使用MOSFET或常关JFET作为高侧开关，第二转换器级包括使用常导JFET作为高侧开关的多相调制器，从而改善 两级DC-DC转换器的效率。

公开(公告)号：US06960905B2

公开(公告)日：2005-11-01

申请号：US10828220

申请日：2004-04-21

Applicant: Jiun-Chiang Chen ,  Hsin-Hsin Ho ,  Hung-I Wang ,  Liang-Pin Tai

Inventor： Jiun-Chiang Chen ,  Hsin-Hsin Ho ,  Hung-I Wang ,  Liang-Pin Tai

IPC: G05F1/40 ,  G05F1/563 ,  H02M3/158

CPC classification number: H02M3/1584 ,  H02M2001/0009

Abstract: In a time-sharing current sense circuit for a multi-phase converter, a common transconductive amplifier is selectively connected to the channels of the converter power stage by a plurality of first switches under the control of a set of control clocks to detect the channel current of a selected channel among the channels so as to generate a sense current, and a sense current generated by the common transconductive amplifier from the sensed channel current is switched by a plurality of second switches under the control of the same control clocks to connect to one of a plurality of sampling-and-holding circuits each corresponding to one of the channels to generate a current sense signal to modulate the channel current of the selected channel.

Abstract translation: 在用于多相转换器的分时电流检测电路中，在一组控制时钟的控制下，通过多个第一开关选择性地连接到转换器功率级的通道，以检测通道电流 的通道之间的选定通道，以便产生检测电流，并且由感测通道电流产生的公共跨导放大器产生的感测电流在相同控制时钟的控制下由多个第二开关切换以连接到一个 多个采样保持电路各自对应于一个通道以产生电流感测信号以调制所选择的通道的通道电流。

公开(公告)号：US20050140347A1

公开(公告)日：2005-06-30

申请号：US10828220

申请日：2004-04-21

Applicant: Jiun-Chiang Chen ,  Hsin-Hsin Ho ,  Hung-I Wang ,  Liang-Pin Tai

Inventor： Jiun-Chiang Chen ,  Hsin-Hsin Ho ,  Hung-I Wang ,  Liang-Pin Tai

IPC: G05F1/40 ,  G05F1/563 ,  H02M3/158

CPC classification number: H02M3/1584 ,  H02M2001/0009

Abstract: In a time-sharing current sense circuit for a multi-phase converter, a common transconductive amplifier is selectively connected to the channels of the converter power stage by a plurality of first switches under the control of a set of control clocks to detect the channel current of a selected channel among the channels so as to generate a sense current, and a sense current generated by the common transconductive amplifier from the sensed channel current is switched by a plurality of second switches under the control of the same control clocks to connect to one of a plurality of sampling-and-holding circuits each corresponding to one of the channels to generate a current sense signal to modulate the channel current of the selected channel.

公开(公告)号：US06876190B2

公开(公告)日：2005-04-05

申请号：US10820730

申请日：2004-04-09

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

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

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

CPC classification number: G01R19/0092 ,  H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: 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.

Abstract translation: 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：US06771116B1

公开(公告)日：2004-08-03

申请号：US10064267

申请日：2002-06-27

Applicant: Chin-Hui Wang ,  Liang-Pin Tai

Inventor： Chin-Hui Wang ,  Liang-Pin Tai

IPC: G05F110

CPC classification number: G05F3/245

Abstract: A voltage reference circuit includes a current source unit, a voltage-difference creating unit, and a resistance ratio unit. The current source unit receives an input current source and produces two current sources in equal current. The voltage-difference creating unit includes a first MOS device and a second MOS device to respectively receive the two current sources, wherein the first MOS device and a second MOS device has a threshold voltage difference. The resistance ratio unit includes a first resistor and a second resistor coupled in cascade, wherein the threshold voltage difference is applied to the first resistor. By adjusting a ratio of the first resistor to the second resistor, the resistance ratio unit produces a voltage reference, which is also fed back to the current source unit to ensure that the first current source and the second current source are equal.

Abstract translation: 电压基准电路包括电流源单元，电压差产生单元和电阻比单元。 电流源单元接收输入电流源并产生相等电流的两个电流源。 电压差产生单元包括分别接收两个电流源的第一MOS器件和第二MOS器件，其中第一MOS器件和第二MOS器件具有阈值电压差。 电阻比单元包括级联耦合的第一电阻器和第二电阻器，其中阈值电压差被施加到第一电阻器。 通过调节第一电阻器与第二电阻器的比率，电阻比单元产生电压基准，该参考电压也被反馈到电流源单元，以确保第一电流源和第二电流源相等。