公开(公告)号：US08018177B2

公开(公告)日：2011-09-13

申请号：US12213809

申请日：2008-06-25

申请人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

发明人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

IPC分类号： H05B41/36

CPC分类号： H05B33/0818

摘要： A dimming buck type light emitting diode (LED) driving apparatus includes a main switch controlling a driving current flowing into an LED; a current detector detecting a driving current flowing into the LED; a power level determination unit determining a level of the driving power; a dimming capacitor for dimming control; a dimming control unit controlling charging and discharging of the dimming capacitor according to a power level determination signal and an enable signal; a reset circuit unit generating a reset signal according to a detection voltage from the current detector and a voltage of the dimming capacitor; a pulse generation unit generating a pulse signal; and a latch set by the pulse signal of the pulse generation unit and reset by the reset signal of the reset circuit unit to generate a switching signal, and turning on and off the main switch using the switching signal.

摘要翻译： 调光降压型发光二极管（LED）驱动装置包括控制流入LED的驱动电流的主开关; 检测流入LED的驱动电流的电流检测器; 功率电平确定单元，确定驱动电力的电平; 调光电容器，用于调光控制; 调光控制单元，根据功率电平确定信号和使能信号控制调光电容器的充电和放电; 复位电路单元，根据来自电流检测器的检测电压和调光电容器的电压产生复位信号; 产生脉冲信号的脉冲产生单元; 以及由脉冲发生单元的脉冲信号设置的锁存器，并通过复位电路单元的复位信号进行复位，以产生开关信号，并使用开关信号接通和断开主开关。

公开(公告)号：US20090322247A1

公开(公告)日：2009-12-31

申请号：US12213809

申请日：2008-06-25

申请人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

发明人： Bon Ahm Goo ,  Byoung Own Min ,  Young Jin Lee ,  Chang Woo Ha ,  Jeong In Cheon

IPC分类号： H05B41/36

CPC分类号： H05B33/0818

摘要： A dimming buck type light emitting diode (LED) driving apparatus includes a main switch controlling a driving current flowing into an LED; a current detector detecting a driving current flowing into the LED; a power level determination unit determining a level of the driving power; a dimming capacitor for dimming control; a dimming control unit controlling charging and discharging of the dimming capacitor according to a power level determination signal and an enable signal; a reset circuit unit generating a reset signal according to a detection voltage from the current detector and a voltage of the dimming capacitor; a pulse generation unit generating a pulse signal; and a latch set by the pulse signal of the pulse generation unit and reset by the reset signal of the reset circuit unit to generate a switching signal, and turning on and off the main switch using the switching signal.

摘要翻译： 调光降压型发光二极管（LED）驱动装置包括控制流入LED的驱动电流的主开关; 检测流入LED的驱动电流的电流检测器; 功率电平确定单元，确定驱动电力的电平; 调光电容器，用于调光控制; 调光控制单元，根据功率电平确定信号和使能信号控制调光电容器的充电和放电; 复位电路单元，根据来自电流检测器的检测电压和调光电容器的电压产生复位信号; 产生脉冲信号的脉冲产生单元; 以及由脉冲发生单元的脉冲信号设置的锁存器，并通过复位电路单元的复位信号进行复位，以产生开关信号，并使用开关信号接通和断开主开关。

公开(公告)号：US07646181B2

公开(公告)日：2010-01-12

申请号：US11928845

申请日：2007-10-30

申请人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha ,  Deuk Hee Park

发明人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha ,  Deuk Hee Park

IPC分类号： G05F1/40 ,  G05F1/56

CPC分类号： H02M3/3376 ,  H02M1/36 ,  H02M2001/0058 ,  Y02B70/1491

摘要： A control circuit of a DC-DC converter is provided. A mode selection section selects an Active Clamp Forward (ACF) or a Logic Link Control (LLC) mode. A soft start section generates a soft start signal in the ACF and LLC modes. A PWM comparison section compares a current detection signal with a feedback signal, a feedback reference signal and the soft start signal in the ACF mode, and generates a PWM signal based on a comparison result. A selection section selects the PWM signal of the PWM comparison section in the ACF mode. A clock generation section generates a clock signal having a fixed frequency in the ACF mode, and generates a clock signal having a frequency based on an operating current and the soft start signal in the LLC mode. A latch section maintains the PWM signal in response to the clock signal in the ACF mode and maintains the clock signal in the LLC mode.

摘要翻译： 提供DC-DC转换器的控制电路。 模式选择部分选择有源钳位前馈（ACF）或逻辑链路控制（LLC）模式。 软启动部分在ACF和LLC模式下产生软启动信号。 PWM比较部分将电流检测信号与ACF模式中的反馈信号，反馈参考信号和软启动信号进行比较，并且基于比较结果生成PWM信号。 选择部分在ACF模式下选择PWM比较部分的PWM信号。 时钟产生部分以ACF模式产生具有固定频率的时钟信号，并且在LLC模式下产生具有基于工作电流的频率和软启动信号的时钟信号。 锁存部分响应于ACF模式中的时钟信号而保持PWM信号，并将时钟信号保持在LLC模式。

公开(公告)号：US08643587B2

公开(公告)日：2014-02-04

申请号：US11566505

申请日：2006-12-04

申请人： Chang Woo Ha ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

发明人： Chang Woo Ha ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3413 ,  G09G2310/0235 ,  G09G2320/064 ,  H05B33/0818 ,  Y02B20/347

摘要： In an FSC mode LCD, a controller operates in response to an external adjustment, and a DC/DC converter converts a battery voltage into a driving voltage under control of the controller. A color LED backlight includes first, second and third color LED arrays connected in parallel, which are operated by the driving voltage. An FSC generator generates first, second and third color PWM signals according to an internal sawtooth voltage and a dimming voltage. A 3-channel current source generates first, second and third driving currents under control of the controller, and on/off switches paths of the first, second and third driving currents flowing through the first, second and third color LED arrays according to the first, second and third color PWM signals generated from the FSC generator, thereby adjusting luminance of the first, second and third color LED arrays of the color LED backlight.

摘要翻译： 在FSC模式LCD中，控制器响应于外部调整而工作，并且DC / DC转换器在控制器的控制下将电池电压转换成驱动电压。 彩色LED背光包括由驱动电压操作的并联连接的第一，第二和第三彩色LED阵列。 FSC发生器根据内部锯齿电压和调光电压产生第一，第二和第三颜色PWM信号。 3通道电流源在控制器的控制下产生第一，第二和第三驱动电流，并且根据第一，第二和第三驱动电流在第一，第二和第三彩色LED阵列中的第一，第二和第三驱动电流的开/关 ，从FSC发生器产生的第二和第三颜色PWM信号，从而调整彩色LED背光的第一，第二和第三颜色LED阵列的亮度。

公开(公告)号：US20080164925A1

公开(公告)日：2008-07-10

申请号：US11971199

申请日：2008-01-08

申请人： Jeong In CHEON ,  Byoung Own Min ,  Chang Woo Ha

发明人： Jeong In CHEON ,  Byoung Own Min ,  Chang Woo Ha

IPC分类号： H03K3/017

CPC分类号： H03K4/502

摘要： There is a provided a dual mode clock generator that is applicable to a direct current-direct current converter of a power supply. The dual mode clock generator includes a frequency controller for controlling generation of charge and discharge; a current source unit for generating a charge, and generating a charge; a capacitor for charging a voltage according to the charge current generated by the current source unit; an oscillation controller for controlling switch-on or switch-off to charge and discharge the capacitor; a switch for controlling the charging and discharging of the capacitor through the ON or OFF control of the oscillation controller; and a current sink unit for generating a discharge current according to the second current in the first operation mode and generating a discharge current according to the third current and the fourth current in the second operation mode.

摘要翻译： 提供了一种适用于电源的直流电流转换器的双模式时钟发生器。 双模式时钟发生器包括用于控制充放电的产生的频率控制器; 用于产生电荷并产生电荷的电流源单元; 电容器，用于根据由电流源单元产生的充电电流对电压进行充电; 用于控制开关或关断以对电容器充电和放电的振荡控制器; 用于通过振荡控制器的ON或OFF控制来控制电容器的充电和放电的开关; 以及电流吸收单元，用于根据第一操作模式中的第二电流产生放电电流，并且在第二操作模式中根据第三电流和第四电流产生放电电流。

公开(公告)号：US07741893B2

公开(公告)日：2010-06-22

申请号：US11971199

申请日：2008-01-08

申请人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha

发明人： Jeong In Cheon ,  Byoung Own Min ,  Chang Woo Ha

IPC分类号： H03K3/00

CPC分类号： H03K4/502

摘要： There is a provided a dual mode clock generator that is applicable to a direct current-direct current converter of a power supply. The dual mode clock generator includes a frequency controller for controlling generation of charge and discharge; a current source unit for generating a charge, and generating a charge; a capacitor for charging a voltage according to the charge current generated by the current source unit; an oscillation controller for controlling switch-on or switch-off to charge and discharge the capacitor; a switch for controlling the charging and discharging of the capacitor through the ON or OFF control of the oscillation controller; and a current sink unit for generating a discharge current according to the second current in the first operation mode and generating a discharge current according to the third current and the fourth current in the second operation mode.

摘要翻译： 提供了一种适用于电源的直流电流转换器的双模式时钟发生器。 双模式时钟发生器包括用于控制充放电的产生的频率控制器; 用于产生电荷并产生电荷的电流源单元; 电容器，用于根据由电流源单元产生的充电电流对电压进行充电; 用于控制开关或关断以对电容器充电和放电的振荡控制器; 用于通过振荡控制器的ON或OFF控制来控制电容器的充电和放电的开关; 以及电流吸收单元，用于根据第一操作模式中的第二电流产生放电电流，并且在第二操作模式中根据第三电流和第四电流产生放电电流。

公开(公告)号：US20070182699A1

公开(公告)日：2007-08-09

申请号：US11566505

申请日：2006-12-04

申请人： Chang Woo HA ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

发明人： Chang Woo HA ,  Byoung Own Min ,  Jeong In Cheon ,  Yu Jin Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3413 ,  G09G2310/0235 ,  G09G2320/064 ,  H05B33/0818 ,  Y02B20/347

摘要： In an FSC mode LCD, a controller operates in response to an external adjustment, and a DC/DC converter converts a battery voltage into a driving voltage under control of the controller. A color LED backlight includes first, second and third color LED arrays connected in parallel, which are operated by the driving voltage. An FSC generator generates first, second and third color PWM signals according to an internal sawtooth voltage and a dimming voltage. A 3-channel current source generates first, second and third driving currents under control of the controller, and on/off switches paths of the first, second and third driving currents flowing through the first, second and third color LED arrays according to the first, second and third color PWM signals generated from the FSC generator, thereby adjusting luminance of the first, second and third color LED arrays of the color LED backlight.

摘要翻译： 在FSC模式LCD中，控制器响应于外部调整而工作，并且DC / DC转换器在控制器的控制下将电池电压转换成驱动电压。 彩色LED背光包括由驱动电压操作的并联连接的第一，第二和第三彩色LED阵列。 FSC发生器根据内部锯齿电压和调光电压产生第一，第二和第三颜色PWM信号。 3通道电流源在控制器的控制下产生第一，第二和第三驱动电流，并且根据第一，第二和第三驱动电流在第一，第二和第三彩色LED阵列中的第一，第二和第三驱动电流的开/关 ，从FSC发生器产生的第二和第三颜色PWM信号，从而调整彩色LED背光的第一，第二和第三颜色LED阵列的亮度。

公开(公告)号：US08247993B2

公开(公告)日：2012-08-21

申请号：US12560915

申请日：2009-09-16

申请人： Jung Chul Gong ,  Byoung Own Min ,  Bon Ahm Goo ,  Sang Cheol Shin

发明人： Jung Chul Gong ,  Byoung Own Min ,  Bon Ahm Goo ,  Sang Cheol Shin

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  G09G3/342 ,  G09G2330/12

摘要： An apparatus for driving multi-light emitting devices that drives a multi-channel light emitting unit having a plurality of light emitting channels connected in parallel with each other, each of which has a plurality of light emitting devices connected in series with each other according to an aspect of the invention may include: a DC/DC converter generating a driving voltage; a current control unit having a plurality of current sources connected between cathodes of the plurality of light emitting channels and a ground; a minimum voltage selection unit detecting a minimum detection voltage among the plurality of detected voltages at the cathodes of the plurality of light emitting channels; a first error detection unit detecting an error voltage determined by the difference between the minimum detection voltage and a predetermined first reference voltage; and a feedback coupling unit supplying the input voltage according to the error voltage and the driving voltage.

摘要翻译： 一种用于驱动多发光器件的装置，其驱动具有彼此并联连接的多个发光通道的多通道发光单元，每个发光单元具有多个根据 本发明的一个方面可以包括：产生驱动电压的DC / DC转换器; 电流控制单元，其具有连接在所述多个发光通道的阴极和地之间的多个电流源; 最小电压选择单元，检测多个发光通道的阴极处的多个检测电压中的最小检测电压; 第一误差检测单元，检测由所述最小检测电压和预定的第一参考电压之间的差确定的误差电压; 以及反馈耦合单元，根据误差电压和驱动电压提供输入电压。

公开(公告)号：US20100102756A1

公开(公告)日：2010-04-29

申请号：US12578823

申请日：2009-10-14

申请人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

发明人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

IPC分类号： H05B41/36

CPC分类号： H05B33/0815 ,  H05B33/0851 ,  Y02B20/341 ,  Y02B20/347

摘要： An apparatus for driving a light emitting device according to an aspect of the invention may include: a DC/DC converter unit generating driving power on the basis of an input voltage and supplying the generated driving power to an anode of a light emitting unit including a plurality of light emitting devices; a current source controlling to keep current flowing through the light emitting unit constant; a feedback circuit unit detecting voltage at a cathode of the light emitting unit; and a feedback coupling circuit unit coupling the output of the feedback circuit unit and the input of the DC/DC converter unit to supply the input voltage of the DC/DC converter unit according to the voltage detected by the feedback circuit unit and an output voltage of the DC/DC converter unit.

摘要翻译： 根据本发明的一个方面的用于驱动发光器件的装置可以包括：DC / DC转换器单元，其基于输入电压产生驱动电力并将所产生的驱动功率提供给包括发光单元的发光单元的阳极 多个发光装置; 电流源，用于保持电流流过所述发光单元恒定; 检测所述发光单元的阴极处的电压的反馈电路单元; 以及反馈耦合电路单元，其将反馈电路单元的输出和DC / DC转换器单元的输入耦合，以根据由反馈电路单元检测到的电压和DC / DC转换器单元的输出电压来提供DC / DC转换器单元的输入电压 的DC / DC转换器单元。

公开(公告)号：US08269429B2

公开(公告)日：2012-09-18

申请号：US12578823

申请日：2009-10-14

申请人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

发明人： Sang Cheol Shin ,  Byoung Own Min ,  Jung Chul Gong ,  Bon Ahm Goo

IPC分类号： H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B37/00 ,  H05B39/00 ,  H05B41/00

CPC分类号： H05B33/0815 ,  H05B33/0851 ,  Y02B20/341 ,  Y02B20/347

摘要： An apparatus for driving a light emitting device according to an aspect of the invention may include: a DC/DC converter unit generating driving power on the basis of an input voltage and supplying the generated driving power to an anode of a light emitting unit including a plurality of light emitting devices; a current source controlling to keep current flowing through the light emitting unit constant; a feedback circuit unit detecting voltage at a cathode of the light emitting unit; and a feedback coupling circuit unit coupling the output of the feedback circuit unit and the input of the DC/DC converter unit to supply the input voltage of the DC/DC converter unit according to the voltage detected by the feedback circuit unit and an output voltage of the DC/DC converter unit.

摘要翻译： 根据本发明的一个方面的用于驱动发光器件的装置可以包括：DC / DC转换器单元，其基于输入电压产生驱动电力并将所产生的驱动功率提供给包括发光单元的发光单元的阳极 多个发光装置; 电流源，用于保持电流流过所述发光单元恒定; 检测所述发光单元的阴极处的电压的反馈电路单元; 以及反馈耦合电路单元，其将反馈电路单元的输出和DC / DC转换器单元的输入耦合，以根据由反馈电路单元检测到的电压和DC / DC转换器单元的输出电压来提供DC / DC转换器单元的输入电压 的DC / DC转换器单元。