公开(公告)号：US06178098B1

公开(公告)日：2001-01-23

申请号：US09401728

申请日：1999-09-22

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M3335

CPC classification number: H02M3/33561 ,  H02M2001/0093

Abstract: For use in a power converter having an inverter coupled to an output rectifier, a post-regulator, a method of operating the same and a power converter incorporating the post-regulator or the method. In one embodiment: (1) a switching circuit, having at least one controllable switch and coupled an output of the power converter, that receives an output voltage from the power converter and produces a phase-shifted waveform therefrom and (2) a transformer, having a primary winding coupled to the switching circuit and a secondary winding coupled to the rectifier, that delivers the phase-shifted waveform to the rectifier to regulate the power converter, thereby allowing the inverter to be unregulated.

Abstract translation: 用于具有耦合到输出整流器的逆变器的功率转换器，后调节器，其操作方法以及并入后稳压器或方法的功率转换器。 在一个实施例中：（1）开关电路，具有至少一个可控开关并耦合功率转换器的输出，其接收来自功率转换器的输出电压，并产生相移波形，以及（2）变压器， 具有耦合到开关电路的初级绕组和耦合到整流器的次级绕组，其将相移波形传送到整流器以调节功率转换器，从而允许逆变器不受调节。

公开(公告)号：US06122183A

公开(公告)日：2000-09-19

申请号：US199289

申请日：1998-11-24

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M1/00 ,  H02M1/42 ,  H02M1/14

CPC classification number: H02M1/4216 ,  Y02B70/126

Abstract: For use with a three-phase boost converter having a primary stage with a primary rectifier and a primary boost switch coupled between an input and output of the three-phase boost converter, an auxiliary stage, a method of reducing input current total harmonic distortion (THD) at the input of the three-phase boost converter, and a three-phase boost converter employing the auxiliary stage and method are provided. In one embodiment, the auxiliary stage includes: (1) an auxiliary rectifier coupled to the primary rectifier, (2) first, second and third auxiliary boost inductors interposed between the primary rectifier and the auxiliary rectifier and (3) an auxiliary boost switch, interposed between the auxiliary rectifier and the output, that conducts to induce corresponding phase currents through the first, second and third auxiliary boost inductors thereby reducing input current total harmonic distortion (THD) at the input of the three-phase boost converter.

Abstract translation: 用于具有初级整流器和耦合在三相升压转换器的输入和输出之间的初级升压开关的三相升压转换器，辅助级，减小输入电流总谐波失真的方法（ THD）和三相升压转换器的输入，以及采用辅助级和方法的三相升压转换器。 在一个实施例中，辅助级包括：（1）耦合到初级整流器的辅助整流器，（2）插入在初级整流器和辅助整流器之间的第一，第二和第三辅助升压电感器，以及（3）辅助升压开关， 在辅助整流器和输出端之间，通过第一，第二和第三辅助升压电感器导通相应的相电流，从而降低三相升压转换器输入端的输入电流总谐波失真（THD）。

公开(公告)号：US06201719B1

公开(公告)日：2001-03-13

申请号：US09469693

申请日：1999-12-22

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M700

CPC classification number: H02M7/5387 ,  H02M2007/53878

Abstract: A controller for a full bridge power converter having controllable switches, a method of operating the controller and a power supply employing the controller or the method. In one embodiment, the controller includes (1) a signal generator circuit designed to drive the controllable switches in a phase-shifted mode and (2) a switching network, coupled to the signal generator circuit, adapted to enable the signal generator circuit to operate the converter in an alternative one of (2a) the phase-shifted mode, wherein the controllable switches in each of first and second legs of the converter are complementarily switched, the signal generator circuit capable of adjusting a relative phase between the first and second legs and (2b) a normal mode, wherein diagonal pairs of the controllable switches are switched substantially simultaneously and at a substantially full duty cycle.

Abstract translation: 一种具有可控开关的全桥功率转换器的控制器，一种操作该控制器的方法和一种采用该控制器或该方法的电源。 在一个实施例中，控制器包括（1）设计成以相移模式驱动可控开关的信号发生器电路，以及耦合到信号发生器电路的适合于使信号发生器电路工作的开关网络 （2a）所述相移模式的替代方案中的转换器，其中所述转换器的第一和第二支路中的每一个中的可控开关被互补地切换，所述信号发生器电路能够调节所述第一和第二支路之间的相对相位 和（2b）正常模式，其中可控开关的对角线基本上同时地以大致全占空比被切换。

公开(公告)号：US6094087A

公开(公告)日：2000-07-25

申请号：US335319

申请日：1999-06-17

Applicant: Jin He ,  Mark E. Jacobs ,  Kamakshi Sridhar

Inventor： Jin He ,  Mark E. Jacobs ,  Kamakshi Sridhar

IPC: H02M1/00 ,  H02M1/42 ,  H02M3/337 ,  H03K17/04 ,  H03K17/0412 ,  H03K17/687

CPC classification number: H02M1/4225 ,  H02M3/337 ,  H03K17/0406 ,  H03K17/04123 ,  Y02B70/126

Abstract: A gate drive circuit for an isolated gate device, a method of driving the same and a switch-mode power supply employing the circuit or the method. In one embodiment, the circuit includes: (1) a capacitor, having a first terminal coupled to a source of drive voltage and a second terminal coupled to a gate of the isolated gate device, that stores a charge therein when the drive voltage maintains the isolated gate device in an "on" state and (2) a conductive path, leading from the first terminal to an output terminal of the isolated gate device and enabled when the isolated gate device is to be transitioned from the "on" state to an "off" state, that provides a negative off-bias voltage to the gate thereby to avoid spurious turn-on of the isolated gate device.

Abstract translation: 用于隔离栅极器件的栅极驱动电路，其驱动方法和采用该电路或方法的开关模式电源。 在一个实施例中，电路包括：（1）电容器，其具有耦合到驱动电压源的第一端子和耦合到隔离栅极器件的栅极的第二端子，当驱动电压保持时，存储电荷 隔离栅极器件处于“导通”状态，以及（2）从隔离栅极器件的第一端子到输出端子的导电通路，并且当隔离栅极器件将从“接通”状态转换到 “关闭”状态，其向栅极提供负偏置电压，从而避免隔离栅极器件的杂散接通。

公开(公告)号：US6075716A

公开(公告)日：2000-06-13

申请号：US286856

申请日：1999-04-06

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M7/12 ,  H02M1/00 ,  H02M1/42 ,  H02M3/155 ,  H02M1/12

CPC classification number: H02M1/4216 ,  H02M2001/009 ,  Y02B70/126

Abstract: For use with a three-phase split boost converter having a primary stage with a primary rectifier and first and second primary boost switches coupled between an input and first and second outputs of the three-phase split boost converter, an auxiliary stage interposed between the input and the first and second outputs, a method of reducing input current total harmonic distortion (THD) and a converter incorporating the auxiliary stage or the method. In one embodiment, the auxiliary stage includes: (1) first, second and third auxiliary boost inductors coupled to corresponding phases of the input and (2) an auxiliary boost network interposed between the first, second and third auxiliary boost inductors and the first and second outputs and including (2a) an auxiliary three phase full-wave rectifier, (2b) first and second auxiliary boost diodes, and (2c) first and second auxiliary boost switches, coupled between the auxiliary three phase full-wave rectifier and the first and second auxiliary boost diodes, that cooperate to conduct currents through the first, second and third auxiliary boost inductors to reduce input current total harmonic distortion (THD) at the input of the three-phase split boost converter.

Abstract translation: 用于具有初级级的初级整流器和耦合在三相分流式升压转换器的输入端和第一和第二输出端之间的第一和第二主级升压开关的三相分流升压转换器，插入在输入端之间的辅助级 以及第一和第二输出，减少输入电流总谐波失真（THD）的方法和结合辅助级的转换器或方法。 在一个实施例中，辅助级包括：（1）耦合到输入的相应相位的第一辅助升压电感器和第二辅助升压电感器，和（2）插入在第一辅助升压电感器和第二辅助升压电感器之间的辅助升压网络，以及 第二输出，包括（2a）辅助三相全波整流器，（2b）第一和第二辅助升压二极管，和（2c）第一和第二辅助升压开关，耦合在辅助三相全波整流器和第一 和第二辅助升压二极管，它们配合以通过第一，第二和第三辅助升压电感器传导电流，以减小三相分压升压转换器输入端的输入电流总谐波失真（THD）。

公开(公告)号：US6043997A

公开(公告)日：2000-03-28

申请号：US133105

申请日：1998-08-12

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M1/14

CPC classification number: H02M1/4216 ,  H02M1/4225 ,  Y02B70/126

Abstract: For use with a three-phase boost converter having a primary stage with a primary rectifier and a primary boost switch coupled between an input and output of the three-phase boost converter, an auxiliary stage, method of reducing input current total harmonic distortion (THD) at the input of the three-phase boost converter, and a three-phase boost converter employing the auxiliary stage and method. In one embodiment, the auxiliary stage includes first, second and third auxiliary boost inductors coupled to corresponding phases of the input. The auxiliary stage also includes an auxiliary boost switch, interposed between the first, second and third auxiliary boost inductors and the output, that conducts to draw corresponding phase currents through the first, second and third auxiliary boost inductors thereby reducing input current THD at the input of the three-phase boost converter.

Abstract translation: 用于具有初级整流器和耦合在三相升压转换器的输入和输出之间的初级升压开关的三相升压转换器，辅助级，减少输入电流总谐波失真（THD）的方法 ）在三相升压转换器的输入端，以及采用辅助级和方法的三相升压转换器。 在一个实施例中，辅助级包括耦合到输入的相应相位的第一，第二和第三辅助升压电感器。 辅助级还包括插入在第一辅助升压电感器和第三辅助升压电感器之间的辅助升压开关和输出端，该辅助升压开关导通通过第一，第二和第三辅助升压电感器引出相应的相电流，从而减小输入端的输入电流THD 的三相升压转换器。

公开(公告)号：US6031739A

公开(公告)日：2000-02-29

申请号：US133068

申请日：1998-08-12

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M1/00 ,  H02M1/42 ,  G05F1/613

CPC classification number: H02M1/4216 ,  Y02B70/126

Abstract: For use with a three-phase split boost converter having a primary stage with a primary rectifier and first and second primary boost switches coupled between an input and first and second outputs of the three-phase split boost converter, an auxiliary stage, method of reducing input current total harmonic distortion (THD) at the input of the three-phase split boost converter, and a three-phase split boost converter employing the auxiliary stage and method. In one embodiment, the auxiliary stage includes first, second and third auxiliary boost inductors coupled to corresponding phases of the input. The auxiliary stage also includes an auxiliary boost switch, interposed between the first, second and third auxiliary boost inductors and the first and second outputs of the split boost, that conducts to induce corresponding phase currents through the first, second and third auxiliary boost inductors thereby reducing input current THD at the input of the three-phase split boost converter.

Abstract translation: 用于具有初级级的初级整流器和耦合在三相分流升压转换器的输入端和第一和第二输出端之间的第一和第二主级升压开关的三相分流升压转换器，辅助级，减小 三相分压升压转换器输入端的输入电流总谐波失真（THD），以及采用辅助级和方式的三相分压升压转换器。 在一个实施例中，辅助级包括耦合到输入的相应相位的第一，第二和第三辅助升压电感器。 辅助级还包括插入在第一辅助升压电感器和第二辅助升压电感器之间的辅助升压开关以及分压升压器的第一和第二输出端，其通过第一，第二和第三辅助升压电感器导通相应的相电流，由此 减少三相分压升压转换器输入端的输入电流THD。

公开(公告)号：US5909108A

公开(公告)日：1999-06-01

申请号：US27579

申请日：1998-02-23

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M3/158 ,  H03K17/08 ,  H03K17/082 ,  H03K17/12 ,  G05F1/613

CPC classification number: H03K17/127 ,  H02M3/1584 ,  H03K17/0828 ,  H03K17/122 ,  H03K2017/0806 ,  Y10S323/907

Abstract: For use in a switch-mode power converter including parallel-coupled first and second switches, the first switch having a temperature-dependent resistance, a circuit for, and method of, distributing current between the first and second switches. In one embodiment, the circuit includes a device having a temperature-dependent characteristic, in thermal communication with the first switch and electrically coupled to a gate of the first switch, that senses a temperature of the first switch, modulates an amplitude of a drive waveform applied to the gate based on the temperature and thereby redistributes the current.

Abstract translation: 为了在包括并联耦合的第一和第二开关的开关模式功率转换器中使用，第一开关具有温度依赖性电阻，电路和在第一和第二开关之间分配电流的方法。 在一个实施例中，电路包括具有与第一开关热连通并电耦合到第一开关的栅极的温度相关特性的器件，其感测第一开关的温度，调制驱动波形的幅度 基于温度施加到栅极，从而重新分布电流。

公开(公告)号：US5847548A

公开(公告)日：1998-12-08

申请号：US939075

申请日：1997-09-26

Applicant: Jin He ,  Mark E. Jacobs

Inventor： Jin He ,  Mark E. Jacobs

IPC: H02M1/34 ,  H02M3/158 ,  H03K17/0814 ,  G05F1/10

CPC classification number: H02M1/34 ,  H02M3/1584 ,  H03K17/08148 ,  H02M2001/346 ,  Y02B70/1491

Abstract: For use in a boost converter having first and second boost switches coupled in parallel, a snubber for, and method of, improving current sharing between the first and second boost switches. In one embodiment, the snubber includes: (1) first and second snubber inductors, series-coupled with the first and second boost switches, respectively, that limit a flow rate of the electrical current in the first and second switches, respectively, as a function of a rate of the flow and (2) a conductive path, including a first zener diode coupled to a first node between the first snubber inductor and the first boost switch and a second zener diode coupled to a second node between the second snubber inductor and the second boost switch, that conducts a turn-off energy of said first and second boost switches from the first and second nodes toward an output of the boost converter.

Abstract translation: 用于具有并联耦合的第一和第二升压开关的升压转换器，用于改善第一和第二升压开关之间的电流共享的缓冲器及其方法。 在一个实施例中，缓冲器包括：（1）分别与第一和第二升压开关串联耦合的第一和第二缓冲电感器，其将第一和第二开关中的电流的流率分别限制为 流动速率的函数和（2）导电路径，包括耦合到第一缓冲电感器和第一升压开关之间的第一节点的第一齐纳二极管和耦合到第二缓冲电感器之间的第二节点的第二齐纳二极管 以及第二升压开关，其将所述第一和第二升压开关的关断能量从第一和第二节点向升压转换器的输出传导。

公开(公告)号：US20140162247A1

公开(公告)日：2014-06-12

申请号：US14003851

申请日：2012-03-09

Applicant: Stuart Lindsay ,  Pei Pang ,  Jin He

Inventor： Stuart Lindsay ,  Pei Pang ,  Jin He

IPC: G01N27/414

CPC classification number: G01N27/4146 ,  G01N33/48721

Abstract: Fluidic nanotube devices and methods for their use are provided wherein the flow of charged molecules through a channel is controlled by the voltage potential of a gate electrode. In at least some embodiments, a molecular transistor is provided that includes a channel having a diameter such that only one target molecule at a time may traverse the channel. The channel may be a carbon nanotube that is electrically isolated from, and in communication with, a gate electrode. Methods are provided for controlling the flow of an individual molecule through the channel and for detecting a single chemical reaction.

Abstract translation: 提供了流动的纳米管装置及其使用方法，其中通过通道的带电分子的流动由栅电极的电压电位来控制。 在至少一些实施例中，提供了一种分子晶体管，其包括具有使得一次只能有一个靶分子可以穿过该通道的直径的通道。 通道可以是与栅电极电隔离并与栅电极连通的碳纳米管。 提供了用于通过通道控制单个分子的流动并用于检测单个化学反应的方法。