公开(公告)号：KR1020080071311A

公开(公告)日：2008-08-04

申请号：KR1020070009363

申请日：2007-01-30

Applicant: 국민대학교산학협력단

Inventor： 한상규 ,  노정욱 ,  홍성수 ,  사공석진

IPC: H02M3/28

CPC classification number: Y02B70/1491

Abstract: A post regulator is provided to remove a reflux phenomenon of current and to improve heat generation by securing a zero current switching for a secondary side switch device. A post regulator includes a comparator, a logic gate, and a synchronization circuit. The comparator has an input terminal for inputting each of a secondary side output voltage, a first reference voltage, and a second reference voltage of a converter to compare the secondary side output voltage with the first and second reference voltages. The logic gate switches the secondary side output voltage in a previously set pattern when the secondary side output voltage is within the first and second reference voltages and increases or decreases the switching period if the secondary side output voltage is out of the first and second reference voltages. The synchronization circuit synchronizes the switching of the secondary side output voltage with the period of the output voltage.

Abstract translation: 提供后稳压器以消除电流的回流现象并且通过确保次级侧开关器件的零电流开关来改善发热。 后稳压器包括比较器，逻辑门和同步电路。 比较器具有用于输入转换器的次级侧输出电压，第一参考电压和第二参考电压中的每一个的输入端子，以将次级侧输出电压与第一和第二参考电压进行比较。 当次级侧输出电压在第一和第二参考电压内时，逻辑门以预先设定的模式切换次级侧输出电压，并且如果次级侧输出电压超出第一和第二参考电压，则增加或减少开关周期 。 同步电路将次级侧输出电压的切换与输出电压的周期同步。

公开(公告)号：KR100740657B1

公开(公告)日：2007-07-19

申请号：KR1020060123544

申请日：2006-12-07

Applicant: 국민대학교산학협력단

Inventor： 한상규 ,  노정욱 ,  홍성수 ,  사공석진

IPC: G02F1/13357 ,  H05B41/24 ,  H05B41/38

Abstract: A backlight driving apparatus for a non-emissive display device is provided to realize high brightness and high light efficiency, by switching an inverter driver through a fixed frequency and a fixed time rate and controlling a digital dimming signal according to an integral value of current flowing into a lamp in a closed loop type. A lamp driver(110) switches DC power to convert the DC power into a predetermined electric power. A lamp unit(120) receives the converted electric power to emit light. A sensor(130) senses current level or brightness level from the lamp unit. A controller(140) generates a digital dimming signal to uniformly control the sensed current level or brightness level according to a lamp brightness command. A signal generator(150) generates a driving signal of a fixed frequency and a fixed time rate. A digital dimming unit(160) generates an inverter driving signal based on the digital dimming signal and the driving signal.

Abstract translation: 提供一种用于非发射型显示装置的背光驱动装置，通过以固定频率和固定时间速率切换逆变器驱动器并根据电流流动的积分值来控制数字调光信号，从而实现高亮度和高光效率 成闭环式的灯。 灯驱动器（110）切换DC电力以将DC电力转换成预定电力。 灯单元（120）接收转换的电力以发光。 传感器（130）感测来自灯单元的电流水平或亮度水平。 控制器（140）根据灯亮度命令产生数字调光信号以均匀地控制感测到的电流水平或亮度水平。 信号发生器（150）产生固定频率和固定时间速率的驱动信号。 数字调光单元（160）基于数字调光信号和驱动信号产生逆变器驱动信号。