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：US07382172B2

公开(公告)日：2008-06-03

申请号：US11497587

申请日：2006-08-02

Applicant: Pao-Chuan Lin ,  Hung-Der Su ,  An-Tung Chen ,  Jing-Meng Liu

Inventor： Pao-Chuan Lin ,  Hung-Der Su ,  An-Tung Chen ,  Jing-Meng Liu

IPC: H03L5/00

CPC classification number: H03K3/35613 ,  H03K3/012

Abstract: The present invention discloses a level shift circuit which comprises: level shift means for receiving an input of a first operational voltage and generating an output of a second operational voltage; and a current path connecting with a source of the second operational voltage and providing current to the output of the level shift means to speed up output level switching. The circuit preferably further comprises a power consumption control circuit for stopping excess power consumption when the output of the level shift means has substantially accomplished level switching.

Abstract translation: 本发明公开了一种电平移位电路，包括：电平移位装置，用于接收第一工作电压的输入并产生第二工作电压的输出; 以及与第二工作电压源连接并将电流提供给电平移位装置的输出的电流路径，以加速输出电平切换。 电路优选地还包括功率消耗控制电路，用于在电平移位装置的输出基本上实现电平切换时停止多余的功率消耗。

公开(公告)号：US07327124B2

公开(公告)日：2008-02-05

申请号：US11388158

申请日：2006-03-24

Applicant: Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

Inventor： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su ,  Wei-Hsin Wei

IPC: G05F1/577

CPC classification number: H02M3/157 ,  H02M3/1588 ,  Y02B70/1466

Abstract: A plurality of switches, an inductor and two capacitors are configured to be a boost-inverting converter. To operate the converter in a boost-inverting mode, a control apparatus and method switch the switches such that the inductor is energized in a first phase, the first capacitor is discharged to produce an inverting voltage in a second phase, and the capacitor Cout1 is discharged to produce the inverting voltage and the second capacitor is charged to produce a boost voltage in a third phase. Therefore, the boost-inverting converter has lower peak inductor current and less power loss, and the limitation to the switch design for the boost-inverting converter is relaxed.

Abstract translation: 多个开关，电感器和两个电容器被配置为升压反相转换器。 为了在升压反转模式下操作转换器，控制装置和方法切换开关使得电感器在第一相中通电，第一电容器被放电以产生第二相的反相电压，并且电容器Cout 1 被放电以产生反相电压，并且第二电容器被充电以在第三相中产生升压电压。 因此，升压反相转换器具有较低的峰值电感电流和较小的功率损耗，并且对升压反相转换器的开关设计的限制放宽。

公开(公告)号：US20060109046A1

公开(公告)日：2006-05-25

申请号：US11108742

申请日：2005-04-19

Applicant: Chun-Yen Huang ,  Hung-Der Su ,  Jing-Meng Liu ,  Chung-Lung Pai ,  Shih-Hui Chen ,  Yang-Ping Hung

Inventor： Chun-Yen Huang ,  Hung-Der Su ,  Jing-Meng Liu ,  Chung-Lung Pai ,  Shih-Hui Chen ,  Yang-Ping Hung

IPC: H03K17/00

CPC classification number: H03K17/0822 ,  H03K3/00 ,  H03K17/00 ,  H03K17/18 ,  H03K17/6871

Abstract: A method, which is for determining switching state of a transistor-based switching device that includes a set of transistors, includes the steps of: applying a bias voltage to a transistor having a fastest response so as to dispose the transistors in the set in a desired transistor state; detecting a voltage level at a transistor having a slowest response to the bias voltage; and comparing the detected voltage level with a predetermined threshold voltage level in order to determine the switching state of the switching device. A transistor-based switching device is also disclosed.

Abstract translation: 一种用于确定包括一组晶体管的基于晶体管的开关器件的开关状态的方法包括以下步骤：将偏置电压施加到具有最快响应的晶体管，以将晶体管置于该组中的晶体管中 所需晶体管状态; 检测对所述偏置电压具有最慢响应的晶体管的电压电平; 以及将检测到的电压电平与预定阈值电压电平进行比较，以便确定开关器件的开关状态。 还公开了一种基于晶体管的开关器件。

公开(公告)号：US20050275711A1

公开(公告)日：2005-12-15

申请号：US11149292

申请日：2005-06-10

Applicant: Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su

Inventor： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su

IPC: B41J2/47 ,  H05B33/08

CPC classification number: H05B33/0857 ,  H05B33/0818 ,  H05B33/0827 ,  Y02B20/347

Abstract: In a LED driver using a depletion mode transistor to serve as a current source, the depletion mode transistor is self-biased for providing a driving current to drive at least one LED, thereby requesting no additional control circuit to control the depletion mode transistor. The driving current is independent on the supply voltage coupled to the at least one LED, thereby requesting no additional voltage regulator, reducing the circuit size, and lowering the cost.

Abstract translation: 在使用耗尽型晶体管作为电流源的LED驱动器中，耗尽型晶体管是自偏置的，用于提供驱动电流以驱动至少一个LED，从而不需要额外的控制电路来控制耗尽型晶体管。 驱动电流独立于耦合到至少一个LED的电源电压，从而不需要额外的电压调节器，减小电路尺寸并降低成本。

公开(公告)号：US07838900B2

公开(公告)日：2010-11-23

申请号：US12385718

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.

Abstract translation: 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：US07728529B2

公开(公告)日：2010-06-01

申请号：US11149292

申请日：2005-06-10

Applicant: Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su

Inventor： Jing-Meng Liu ,  Chung-Lung Pai ,  Hung-Der Su

IPC: H05B37/02

CPC classification number: H05B33/0857 ,  H05B33/0818 ,  H05B33/0827 ,  Y02B20/347

Abstract: In a LED driver using a depletion mode transistor to serve as a current source, the depletion mode transistor is self-biased for providing a driving current to drive at least one LED, thereby requesting no additional control circuit to control the depletion mode transistor. The driving current is independent on the supply voltage coupled to the at least one LED, thereby requesting no additional voltage regulator, reducing the circuit size, and lowering the cost.

Abstract translation: 在使用耗尽型晶体管作为电流源的LED驱动器中，耗尽型晶体管是自偏置的，用于提供驱动电流以驱动至少一个LED，从而不需要额外的控制电路来控制耗尽型晶体管。 驱动电流独立于耦合到至少一个LED的电源电压，从而不需要额外的电压调节器，减小电路尺寸并降低成本。

公开(公告)号：US07652536B2

公开(公告)日：2010-01-26

申请号：US12068774

申请日：2008-02-12

Applicant: Hung-Der Su ,  Jing-Meng Liu ,  An-Tung Chen ,  Pao-Chuan Lin

Inventor： Hung-Der Su ,  Jing-Meng Liu ,  An-Tung Chen ,  Pao-Chuan Lin

IPC: H03F3/45 ,  H03F1/14

CPC classification number: H03F1/26 ,  H03F1/083 ,  H03F3/45197 ,  H03F2203/45356

Abstract: An amplifier circuit with internal zeros provides a second pole in addition to a first pole and two zeros such that the second pole can prevent excessive gain at high frequency, so as to have high-frequency noise under control.

Abstract translation: 具有内部零点的放大器电路除了第一极点和第二极点之外还提供第二极点，使得第二极点可以在高频下防止过高的增益，从而具有控制的高频噪声。

公开(公告)号：US20090201079A1

公开(公告)日：2009-08-13

申请号：US12385720

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: G05F3/02

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：US07557553B2

公开(公告)日：2009-07-07

申请号：US11650525

申请日：2007-01-08

Applicant: Hung-Der Su ,  Jing-Meng Liu

Inventor： Hung-Der Su ,  Jing-Meng Liu

IPC: H03K19/0175

CPC classification number: H02M3/156

Abstract: A power supply circuit and a control method are provided, in which the original enable pad and output pad, or the enable pad and feedback pad are used to trim the output voltage of the power supply circuit without extra trim pads.

Abstract translation: 提供了电源电路和控制方法，其中原始使能焊盘和输出焊盘或使能焊盘和反馈焊盘用于修剪电源电路的输出电压而无需额外的修整焊盘。