公开(公告)号：US20120038391A1

公开(公告)日：2012-02-16

申请号：US13092142

申请日：2011-04-21

Applicant: Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Si-Min Wu

Inventor： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Si-Min Wu

IPC: H03K3/01

CPC classification number: H02H7/122

Abstract: The present invention discloses a transistor driving module, coupling to a converting controller, to driving a high side transistor and a low side transistor connected in series, wherein one end of the high side transistor is coupled to an input voltage and one end of the low side transistor is grounded. The transistor driving module comprises a high side driving unit, a low side driving unit, a current limiting unit and an anti-short through unit. The high side driving unit generates a high side driving signal to turn the high side transistor on according to a duty cycle signal, and the low side driving unit generates a low side driving signal turn the low side transistor on according to the high side driving signal. The current limiting unit is coupled to the high side transistor and the high side driving unit, and generates a current limiting signal when a current flowing through the high side transistor higher than a current limiting value. The high side driving unit is stopped to generate the high side driving signal when receiving the current limiting value. The anti-short through unit is coupled to the high side driving unit and the low side driving unit to control the generations of the high side driving signal and the low side driving signal to have the timings of the high side driving signal and the low side driving signal non-overlapped.

Abstract translation: 本发明公开了一种与转换控制器耦合以驱动串联连接的高侧晶体管和低侧晶体管的晶体管驱动模块，其中高侧晶体管的一端耦合到输入电压，低端的一端 侧晶体管接地。 晶体管驱动模块包括高侧驱动单元，低侧驱动单元，限流单元和防短路单元。 高侧驱动单元产生高侧驱动信号，以根据占空比信号使高侧晶体管导通，低边驱动单元产生低侧驱动信号，根据高侧驱动信号使低侧晶体管导通 。 电流限制单元耦合到高侧晶体管和高侧驱动单元，并且当流过高侧晶体管的电流高于电流限制值时，产生限流信号。 当接收到电流限制值时，高侧驱动单元被停止以产生高侧驱动信号。 防短路单元耦合到高侧驱动单元和低侧驱动单元，以控制高侧驱动信号和低侧驱动信号的代，以具有高侧驱动信号和低侧的定时 驾驶信号不重叠。

公开(公告)号：US20110109231A1

公开(公告)日：2011-05-12

申请号：US12826699

申请日：2010-06-30

Applicant: Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Hai-Po Li

Inventor： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Hai-Po Li

IPC: H05B37/02

CPC classification number: H05B33/0887 ,  H05B33/0827 ,  H05B33/0866 ,  Y02B20/341

Abstract: An LED current control circuit including a current adjusting unit, a detecting unit, and a current control unit is provided. The current adjusting unit has a current control end coupled to an LED string for determining an amount of current flowing through the LED string according to a current control signal. The detecting unit detects the current control end and determines whether to generate a protecting signal according to a protecting voltage value. The current control unit generates the current control signal to control the amount of current flowing through the LED string of and determines whether to stop the current flowing through the LED string according to the protecting signal.

Abstract translation: 提供了包括电流调节单元，检测单元和电流控制单元的LED电流控制电路。 电流调节单元具有耦合到LED串的电流控制端，用于根据电流控制信号确定流过LED串的电流量。 检测单元检测电流控制端，并根据保护电压值确定是否产生保护信号。 电流控制单元产生电流控制信号以控制流过LED串的电流量，并根据保护信号确定是否停止流经LED串的电流。

公开(公告)号：US20100141159A1

公开(公告)日：2010-06-10

申请号：US12399017

申请日：2009-03-06

Applicant: Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu

Inventor： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu

IPC: H05B37/02

CPC classification number: H05B33/0827 ,  H05B33/0851 ,  H05B33/0854

Abstract: The present invention provides an LED driving circuit with temperature compensation, comprising a power transforming circuit, an LED module and a controller. The transforming circuit receives an electrical power from an input power source and transforms it into an output voltage according to a control signal. The LED module is coupled to the transforming circuit. The controller generates the control signal according to an operation temperature and a voltage feedback signal indicative of the output voltage, and makes the output voltage decrease with increasing operation temperature. Therefore, the LED driving circuit of the present invention has an effect of temperature compensation that compensates the influence of the decreased driving voltage of the LED module due to temperature.

Abstract translation: 本发明提供一种具有温度补偿的LED驱动电路，包括功率变换电路，LED模块和控制器。 变换电路从输入电源接收电力，并根据控制信号将其转换为输出电压。 LED模块耦合到变换电路。 控制器根据操作温度和表示输出电压的电压反馈信号产生控制信号，并使输出电压随着工作温度的升高而降低。 因此，本发明的LED驱动电路具有补偿由温度引起的LED模块的驱动电压降低的影响的温度补偿的效果。

公开(公告)号：US07397195B2

公开(公告)日：2008-07-08

申请号：US11164316

申请日：2005-11-17

Applicant: Chung-Che Yu ,  Li-Min Lee

Inventor： Chung-Che Yu ,  Li-Min Lee

IPC: G05F1/00

CPC classification number: H05B33/0857 ,  H05B33/0818

Abstract: A control circuit for LEDs is adapted for controlling brightness of a plurality of LEDs as light source in an LCD. The control circuit comprises a control pulse generator and a plurality of LED direct current supplies. The control pulse generator is used for receiving a brightness adjusting signal and generating a plurality of brightness control pulse signals having the same frequency but different phases according to the brightness control signals. The work cycle of the brightness control pulse signal varies in a predetermined range according to the brightness control signal. The LED direct current provider is coupled to the control pulse generator to drive the corresponding LED according to the brightness pulse signal.

Abstract translation: 用于LED的控制电路适于控制作为LCD中的光源的多个LED的亮度。 控制电路包括控制脉冲发生器和多个LED直流电源。 控制脉冲发生器用于接收亮度调节信号，并根据亮度控制信号产生具有相同频率但不同相位的多个亮度控制脉冲信号。 亮度控制脉冲信号的工作周期根据亮度控制信号在预定范围内变化。 LED直流提供器耦合到控制脉冲发生器，以根据亮度脉冲信号驱动相应的LED。

公开(公告)号：US20080122551A1

公开(公告)日：2008-05-29

申请号：US11609908

申请日：2006-12-13

Applicant: Li-Min Lee ,  Chung-Che Yu ,  Chih-Shun Lee

Inventor： Li-Min Lee ,  Chung-Che Yu ,  Chih-Shun Lee

IPC: H03K7/08

CPC classification number: H03K7/08 ,  H02M3/156 ,  H03F2200/351

Abstract: An apparatus for generating a pulse width modulated (PWM) signal to control a transforming circuit to drive a loading is provided. The apparatus includes an error signal generator, a control circuit and a comparator. The error signal generator includes a first input terminal for receiving a reference voltage, a second input terminal for receiving a feedback signal generated based on an operating state of the loading respectively, and an output terminal for outputting an error status signal. The comparator includes a first input terminal for receiving the error status signal, a second input terminal for receiving a compare signal, and an output terminal for generating the PWM signal. The control circuit determines whether to provide a setting signal coupled to the output terminal of the error signal generator based on at least one control signal.

Abstract translation: 提供一种用于产生脉宽调制（PWM）信号以控制变换电路以驱动负载的装置。 该装置包括误差信号发生器，控制电路和比较器。 误差信号发生器包括用于接收参考电压的第一输入端子，用于分别接收基于负载运行状态产生的反馈信号的第二输入端子和用于输出错误状态信号的输出端子。 比较器包括用于接收误差状态信号的第一输入端子，用于接收比较信号的第二输入端子和用于产生PWM信号的输出端子。 控制电路基于至少一个控制信号来确定是否提供耦合到误差信号发生器的输出端的设置信号。

公开(公告)号：US07361218B2

公开(公告)日：2008-04-22

申请号：US10984722

申请日：2004-11-09

Applicant: Chia-Chang Kuo ,  Li-Min Lee ,  Yu-Chieh Cho ,  Sheng-Lung Huang ,  Sheng Bang Huang

Inventor： Chia-Chang Kuo ,  Li-Min Lee ,  Yu-Chieh Cho ,  Sheng-Lung Huang ,  Sheng Bang Huang

IPC: C30B15/20

CPC classification number: C04B35/62231 ,  C04B35/495 ,  C04B35/62268 ,  C04B2235/3201 ,  C04B2235/3203 ,  C04B2235/3232 ,  C04B2235/3251 ,  C04B2235/3255 ,  C04B2235/3284 ,  C04B2235/5264 ,  C30B13/00 ,  C30B13/24 ,  C30B29/30 ,  C30B29/32 ,  C30B29/607 ,  G02F1/0115 ,  G02F1/3558 ,  G02F1/365

Abstract: The present invention relates to a method for fabricating a crystal fiber having different regions of polarization inversion, comprising the following steps: (a) providing a source material; (b) putting the source material into a fabricating apparatus; and (c) forming the crystal fiber from the source material, and applying an external electric field on the grown crystal fiber during the growth procedure of the crystal fiber so as to induce micro-swing of the crystal fiber for polarization inversion, whereby poling at the time a ferroelectric crystalline body is being formed, whereas the conventional methods are designed for poling a ferroelectric crystalline body after it has been formed.

Abstract translation: 本发明涉及一种制造具有不同极化反转区域的晶体光纤的方法，包括以下步骤：（a）提供源材料; （b）将原材料放入制造装置中; 以及（c）从源材料形成晶体纤维，并且在晶体纤维的生长过程期间在生长的晶体纤维上施加外部电场，以引起晶体纤维的微摆动以进行极化反转，由此在 形成铁电晶体的时间，而常规方法被设计用于在形成铁电晶体之后极化铁电晶体。

公开(公告)号：US20070222739A1

公开(公告)日：2007-09-27

申请号：US11309019

申请日：2006-06-09

Applicant: Chung-Che Yu ,  Li-Min Lee ,  Chin-Fa Kao

Inventor： Chung-Che Yu ,  Li-Min Lee ,  Chin-Fa Kao

IPC: G09G3/36

CPC classification number: G09G3/3406 ,  G09G2320/064 ,  G09G2330/04 ,  H05B33/0818 ,  H05B33/0851 ,  H05B33/0887 ,  Y02B20/341 ,  Y02B20/346

Abstract: A driving circuit for a plurality of light-emitting diodes (LEDs) comprises a transformer, a driving module, and a protection module. The transformer has a primary coil and a secondary coil, wherein a first end of the primary coil is coupled to a voltage source. Furthermore, a second end of the primary coil of the transformer is coupled to the driving module. The driving module determines whether to deliver electrical power to the transformer according to a pulse-width modulation (PWM) signal and an error signal. The protection module is coupled to the secondary coil. When a driving voltage output by the transformer to the LEDs is less than a first preset voltage or greater than a second preset voltage, the protection module generates the error signal to the driving module.

Abstract translation: 用于多个发光二极管（LED）的驱动电路包括变压器，驱动模块和保护模块。 变压器具有初级线圈和次级线圈，其中初级线圈的第一端耦合到电压源。 此外，变压器的初级线圈的第二端耦合到驱动模块。 驱动模块根据脉冲宽度调制（PWM）信号和误差信号来确定是否向变压器传送电力。 保护模块耦合到次级线圈。 当变压器向LED输出的驱动电压小于第一预设电压或大于第二预置电压时，保护模块产生到驱动模块的误差信号。

公开(公告)号：US08971059B2

公开(公告)日：2015-03-03

申请号：US13447285

申请日：2012-04-16

Applicant: Ke Peng ,  Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu

Inventor： Ke Peng ,  Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu

IPC: H02M3/335 ,  H02H7/10 ,  H02M1/36 ,  H02M3/337 ,  H02M1/00

CPC classification number: H02H7/10 ,  H02M1/36 ,  H02M3/335 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02P80/112

Abstract: A current detecting circuit detects a resonant current in a primary side of a resonant converting circuit to generate a current detecting signal. An output detecting circuit generates a feedback signal according to the output voltage. A resonant controller generates a clock signal and adjusts an operating frequency of the clock signal in response to the feedback signal for modulating the output voltage of the resonant circuit. The resonant controller includes a resonance deviation protection unit which detects the current detecting signal according to a phase of the clock signal to determine whether the resonant circuit enters a region of zero current switching or not. When the resonant circuit enters the region of zero current switching, the resonant controller executes a corresponding protection process in response to that the resonant controller operates in a starting mode or a normal operating mode.

Abstract translation: 电流检测电路检测谐振转换电路的初级侧的谐振电流以产生电流检测信号。 输出检测电路根据输出电压产生反馈信号。 谐振控制器响应于用于调制谐振电路的输出电压的反馈信号而产生时钟信号并调整时钟信号的工作频率。 谐振控制器包括谐振偏差保护单元，其根据时钟信号的相位检测电流检测信号，以确定谐振电路是否进入零电流切换的区域。 当谐振电路进入零电流切换区域时，谐振控制器响应于谐振控制器在启动模式或正常工作模式下运行而执行相应的保护处理。

公开(公告)号：US20140062428A1

公开(公告)日：2014-03-06

申请号：US13604635

申请日：2012-09-06

Applicant: Shian-Sung Shiu ,  Ke Peng ,  Li-Min Lee ,  Ying Wang ,  Yong Huang

Inventor： Shian-Sung Shiu ,  Ke Peng ,  Li-Min Lee ,  Ying Wang ,  Yong Huang

IPC: G05F1/10

CPC classification number: H05B33/0848

Abstract: Disclosed is a feedback detection circuit, adapted to provide a feedback detection signal wherein a converting circuit provides a driving power source to drive a load according to the feedback detection signal. The feedback detection circuit comprises an operational conversion circuit and a signal limitation circuit. The operational conversion circuit generates the feedback detection signal in response to a level of a detected node of the load. The operational conversion circuit has an operational amplifier, which modulates the level of the feedback detection signal in response to the level of the detected node. The signal limitation circuit is coupled to the operational conversion circuit for clamping a level rang of the feedback detection signal.

Abstract translation: 公开了一种反馈检测电路，其适于提供反馈检测信号，其中转换电路根据反馈检测信号提供驱动电源来驱动负载。 反馈检测电路包括操作转换电路和信号限制电路。 操作转换电路响应于检测到的负载节点的电平而产生反馈检测信号。 操作转换电路具有运算放大器，其响应于检测到的节点的电平来调制反馈检测信号的电平。 信号限制电路耦合到操作转换电路，用于钳位反馈检测信号的电平。

公开(公告)号：US20130169249A1

公开(公告)日：2013-07-04

申请号：US13449321

申请日：2012-04-18

Applicant: Li-Min Lee ,  Quan Gan ,  Chung-Che Yu ,  Shian-Sung Shiu

Inventor： Li-Min Lee ,  Quan Gan ,  Chung-Che Yu ,  Shian-Sung Shiu

IPC: G05F1/00

CPC classification number: H02M3/1584

Abstract: A multi-phase DC-DC converter and a method of controlling a multi-phase DC-DC converter are disclosed. The multi-phase DC-DC converter is adapted to control a plurality of channels in a multi-phase DC-DC converting circuit for providing an output voltage. The multi-phase DC-DC converter comprises a constant on unit, a plurality of PWM units and a pulse width logic unit. The constant on unit determines a time point of generating a turning on signal indicative of a preset time period according to the output voltage. Each PWM unit generates a PWM signal, and a pulse width thereof is determined according to the turning on signal and currents of the channels. The pulse width logic unit controls the channels according to the corresponding PWM signals generated by the plurality of PWM units.

Abstract translation: 公开了一种多相DC-DC转换器和一种控制多相DC-DC转换器的方法。 多相DC-DC转换器适于在多相DC-DC转换电路中控制多个通道以提供输出电压。 多相DC-DC转换器包括恒定单元，多个PWM单元和脉冲宽度逻辑单元。 常数单元根据输出电压确定产生指示预设时间段的导通信号的时间点。 每个PWM单元产生PWM信号，并且其脉冲宽度根据通道的导通信号和电流确定。 脉冲宽度逻辑单元根据由多个PWM单元产生的对应的PWM信号控制信道。