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：US20090322235A1

公开(公告)日：2009-12-31

申请号：US12494832

申请日：2009-06-30

Applicant: Shian-Sung Shiu ,  Chung-Che Yu ,  JuanJuan Liu

Inventor： Shian-Sung Shiu ,  Chung-Che Yu ,  JuanJuan Liu

IPC: H05B37/02

CPC classification number: H05B33/0845

Abstract: An LED driving circuit is used for dimming by switching between an operating current and a maintaining current or by voltage clamping of a source/drain of MOSFET that is coupled to the LED module. When the LED module is dimmed off, the voltage across the LED module can be kept at a value around a lighting threshold voltage of the LED module that is a minimum voltage for lighting the LED module. Therefore, a voltage difference between the drain and the source of MOSFET coupled to the LED module is smaller than that in the conventional arts. Hence, a withstand voltage of MOSFET can be reduced, and cost of the LED driving circuit as well as the power consumption of MOSFET can be lessened, thereby improving integral efficiency of the circuit.

Abstract translation: LED驱动电路用于通过在工作电流和维持电流之间进行调光，或通过耦合到LED模块的MOSFET的源极/漏极的电压钳位来进行调光。 当LED模块变暗时，LED模块上的电压可以保持在LED模块的照明阈值电压附近的值，LED模块的亮度阈值电压是用于点亮LED模块的最小电压。 因此，耦合到LED模块的MOSFET的漏极和源极之间的电压差小于常规技术中的电压差。 因此，可以降低MOSFET的耐压，并且可以降低LED驱动电路的成本以及MOSFET的功耗，从而提高电路的积分效率。

公开(公告)号：US20070200951A1

公开(公告)日：2007-08-30

申请号：US11530050

申请日：2006-09-08

Applicant: Shian-Sung Shiu ,  Chen-Chien Chung

Inventor： Shian-Sung Shiu ,  Chen-Chien Chung

IPC: H04N5/04 ,  H04N3/26

CPC classification number: H04N3/20

Abstract: The invention provides an image processing method and device to determine whether the timing signal is abnormal by detecting timing signal related to the image signal output to the display. When the timing signal is abnormal, the display receives no the timing signal related to the image signal. The horizontal synchronous signal and vertical synchronous signal prevent the elements in the display, such as electron gun, from operating with abnormal signals, enhancing display lifetime.

Abstract translation: 本发明提供一种图像处理方法和装置，用于通过检测与输出到显示器的图像信号相关的定时信号来确定定时信号是否异常。 当定时信号异常时，显示器不接收与图像信号相关的定时信号。 水平同步信号和垂直同步信号可防止显示器中的元件（如电子枪）以异常信号运行，增加显示寿命。

公开(公告)号：US09166490B2

公开(公告)日：2015-10-20

申请号：US13366358

申请日：2012-02-06

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

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

IPC: H05B37/00 ,  H02M3/337 ,  H05B33/08 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M3/3376 ,  H02M3/33576 ,  H02M2001/0058 ,  H05B33/0815 ,  H05B33/0848 ,  Y02B20/348 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: The present invention provides a full-bridge driving controller and a full-bridge converting circuit, which have the function of soft switch, to provide a DC output voltage. The present invention employs a resonant unit to oscillate the current flowing through the converting circuit at a resonant frequency. The full-bridge driving controller switches four full-bridge transistor switches at an operating frequency higher than the resonant frequency, so as to achieve the function of soft switch.

Abstract translation: 本发明提供具有软开关功能的全桥驱动控制器和全桥转换电路，以提供DC输出电压。 本发明采用谐振单元以谐振频率振荡流过转换电路的电流。 全桥驱动控制器以高于谐振频率的工作频率切换四个全桥晶体管开关，从而实现软开关的功能。

公开(公告)号：US08872441B2

公开(公告)日：2014-10-28

申请号：US13354295

申请日：2012-01-19

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

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

IPC: H05B37/02 ,  H05B33/08 ,  H03K17/082

CPC classification number: H05B33/0884 ,  H03K17/0822 ,  H05B33/089 ,  Y02B20/341

Abstract: A controller with protection function, for controlling a transistor having a control terminal, a first terminal coupled to a load, a second terminal, is disclosed. The controller comprises a judgment unit and a current control unit. The judgment unit is coupled to the transistor and generates a current reducing signal when a potential of the first terminal of the transistor or a voltage difference between the first terminal and the second terminal of the transistor is higher than a preset value. The current control unit is coupled to the control terminal of the transistor for substantially stabilizing the current flowing through the transistor at a preset current value, and reduces the current flowing from the preset current value when receiving the current reducing signal.

Abstract translation: 公开了一种具有保护功能的控制器，用于控制具有控制端子的晶体管，耦合到负载的第一端子，第二端子。 控制器包括判断单元和电流控制单元。 当晶体管的第一端子的电位或晶体管的第一端子和第二端子之间的电压差高于预设值时，判断单元耦合到晶体管并产生电流减小信号。 电流控制单元耦合到晶体管的控制端子，用于基本稳定以预设电流值流过晶体管的电流，并且当接收电流降低信号时，减小从预置电流值流出的电流。

公开(公告)号：US08824176B2

公开(公告)日：2014-09-02

申请号：US13412636

申请日：2012-03-06

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: H02M1/32 ,  H02M3/337 ,  H02M1/00

CPC classification number: H02M3/3376 ,  H02M1/32 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491 ,  Y02P80/112

Abstract: The resonant converting circuit comprises a resonant circuit, a current detecting circuit and the resonant controller. The resonant controller controls a power conversion of the resonant circuit for converting an input voltage into an output voltage and the resonant controller comprises an over current judgment unit and an over current protection unit. The over current judgment unit determines whether the resonant current is higher than an over current value according to a current detecting signal generated by the current detecting circuit. The over current protection unit generates a protection signal in response to a determined result of the over current judgment unit and an indication signal indicative of an operating state of the resonant controller. The resonant controller executes a corresponding protecting process in response to the protection signal.

Abstract translation: 谐振转换电路包括谐振电路，电流检测电路和谐振控制器。 谐振控制器控制用于将输入电压转换为输出电压的谐振电路的功率转换，并且谐振控制器包括过电流判断单元和过电流保护单元。 过电流判断单元根据由电流检测电路产生的电流检测信号来判定谐振电流是否高于过电流值。 过电流保护单元响应于过电流判断单元的确定结果和表示谐振控制器的工作状态的指示信号产生保护信号。 谐振控制器响应于保护信号执行相应的保护处理。

公开(公告)号：US08664893B2

公开(公告)日：2014-03-04

申请号：US13218405

申请日：2011-08-25

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

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

IPC: H05B37/02

CPC classification number: H05B33/0818 ,  H05B33/0824 ,  H05B33/0827 ,  Y02B20/346

Abstract: The present invention provides a feedback control circuit and an LED driving circuit for using the same, wherein the feedback control circuit receives a dimming signal. The dimming signal is changed between a first state and a second state. When being in the first state, the feedback control circuit controls a converter circuit to drive the LED module for lighting stably. When being in the second state, the feedback control circuit controls the converter circuit to maintain the power conversion of the converter circuit to have an output voltage outputted by the converter circuit maintained at a level close to a lighting threshold voltage of the LED module.

Abstract translation: 本发明提供一种反馈控制电路和使用该反馈控制电路的LED驱动电路，其中反馈控制电路接收调光信号。 调光信号在第一状态和第二状态之间改变。 当处于第一状态时，反馈控制电路控制转换器电路以驱动LED模块以稳定点亮。 当处于第二状态时，反馈控制电路控制转换器电路以维持转换器电路的功率转换，使转换器电路输出的输出电压保持在接近LED模块的点亮阈值电压的水平。

公开(公告)号：US08446098B2

公开(公告)日：2013-05-21

申请号：US13244653

申请日：2011-09-25

Applicant: Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

Inventor： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

IPC: H05B41/16

CPC classification number: H05B33/0815 ,  H05B33/0827

Abstract: An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.

Abstract translation: LED驱动电路包括第一和第二LED模块，第一和第二开关转换器，极值电压检测和选择电路，电流平衡电路和控制器。 第一开关转换器将输入电源的电力变换为第一输出电压以点亮第一LED模块。 第二开关转换器将输入电源的电力转换成用于照亮第二LED模块的第二输出电压。 电流平衡电路平衡流经第一和第二LED模块的电流。 极端电压检测和选择电路检测第一和第二LED模块，并选择输出检测结果之一。 控制器控制第一开关转换器和第二开关转换器的变换，以响应于输出的检测结果点亮第一和第二LED模块。