公开(公告)号：US20120086515A1

公开(公告)日：2012-04-12

申请号：US13005054

申请日：2011-01-12

申请人： Jeong Mo YANG ,  Changsik YOO ,  Young-Jin MOON ,  Yong-Seong ROH ,  Joong Ho CHOI ,  Jae Shin LEE ,  Jung Chul GONG ,  Yu Jin JANG

发明人： Jeong Mo YANG ,  Changsik YOO ,  Young-Jin MOON ,  Yong-Seong ROH ,  Joong Ho CHOI ,  Jae Shin LEE ,  Jung Chul GONG ,  Yu Jin JANG

IPC分类号： H03K3/353

CPC分类号： H03K3/354 ,  H03K3/0231 ,  H03K3/03 ,  H03K5/1534

摘要： There is provided relaxation oscillator. The relaxation oscillator includes: a ramp wave generator generating ramp waves by a complementary operation between a first capacitor module charged and discharged according to a first switching signal and a second capacitor module charged and discharged according to a second switching signal; a negative feedback circuit unit generating a compensation voltage for compensating errors with reference voltage by being fedback with the ramp waves; and a switching signal generator generating the first switching signal controlling the charging and discharging of the first capacitor module and the second switching signal controlling the charging and discharging of the second capacitor module from the compensation voltage and the ramp waves. As a result, the present invention can generate ramp waves having a stable frequency while preventing a frequency from being changed due to a delay or an offset of the comparator.

摘要翻译： 提供放松振荡器。 张弛振荡器包括：斜波发生器，通过根据第一开关信号充电和放电的第一电容器模块与根据第二开关信号充放电的第二电容器模块之间的互补操作产生斜波; 负反馈电路单元，通过与斜波反馈产生用于通过参考电压补偿误差的补偿电压; 以及切换信号发生器，其产生控制第一电容器模块的充电和放电的第一开关信号和控制第二电容器模块从补偿电压和斜波的充电和放电的第二开关信号。 结果，本发明可以产生具有稳定频率的斜坡波，同时防止频率由于比较器的延迟或偏移而改变。

公开(公告)号：US20120087160A1

公开(公告)日：2012-04-12

申请号：US13162793

申请日：2011-06-17

申请人： Jeong Mo YANG ,  Chang Sik YOO ,  Yung Jin MOON ,  Yong Seong ROH ,  Joong Ho CHOI ,  Jae Shin LEE ,  Jung Chul GONG ,  Yu Jin JANG

发明人： Jeong Mo YANG ,  Chang Sik YOO ,  Yung Jin MOON ,  Yong Seong ROH ,  Joong Ho CHOI ,  Jae Shin LEE ,  Jung Chul GONG ,  Yu Jin JANG

IPC分类号： H02M1/12

CPC分类号： H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

摘要： There is provided a power factor correction circuit capable of correcting a power factor of a power converting module through increasing an input current by switching a main switching element of a power converting module on the basis of a first reference wave having a slope based on a first signal and an error voltage, in particular, by limiting a switching frequency on the basis of a first reference wave having a slope based on a second signal lower than a first signal and an error voltage when the switching frequency of the main switching element increases because an input voltage of the power converting module is low.

摘要翻译： 提供了一种功率因数校正电路，其能够通过增加输入电流来校正功率转换模块的功率因数，所述功率因数校正电路通过基于第一参考波来切换功率转换模块的主开关元件，所述第一基准波具有基于第一 信号和误差电压，特别是通过基于具有基于低于第一信号的第二信号的斜率的第一参考波和当主开关元件的开关频率增加时的误差电压来限制开关频率，因为 电力转换模块的输入电压低。

公开(公告)号：US20110141085A1

公开(公告)日：2011-06-16

申请号：US12771002

申请日：2010-04-30

申请人： Yu Jin JANG ,  Jin Soo LEE ,  Jeong Mo YANG ,  Jeong In CHEON

发明人： Yu Jin JANG ,  Jin Soo LEE ,  Jeong Mo YANG ,  Jeong In CHEON

IPC分类号： G09G5/00

CPC分类号： H05B41/2858 ,  G09G3/3406 ,  G09G2330/026 ,  H05B41/382 ,  Y02B20/204

摘要： Provided is an initial driving circuit of a backlight unit having a lamp unit provided with a plurality of lamps. In the initial driving circuit, an error amplifying unit 100 detects an error voltage VERO between a feedback voltage VFB corresponding to a current flowing to the lamp unit and a preset first reference voltage Vref11. A soft signal generation unit 200 generates a soft start signal VSS of the lamp unit. A high-frequency signal driving signal generating unit 300 generates a high-frequency driving signal VHF of the of the lamp unit. A high-frequency driving termination determining unit 400 generates a high-frequency driving termination signal SHE when the error voltage VERO is equal in voltage level to the soft start signal VSS. A high-frequency driving signal blocking unit 500 blocks the high-frequency driving signal VHF in advance when the high-frequency driving termination signal SHE is inputted.

摘要翻译： 提供了具有设置有多个灯的灯单元的背光单元的初始驱动电路。 在初始驱动电路中，误差放大单元100检测对应于流向灯单元的电流的反馈电压VFB与预设的第一参考电压Vref11之间的误差电压VERO。 软信号生成单元200生成灯单元的软启动信号VSS。 高频信号驱动信号生成单元300生成灯单元的高频驱动信号VHF。 高频驱动终止确定单元400当软电启动信号VSS的电压电平相等时，产生高频驱动终止信号SHE。 当输入高频驱动终止信号SHE时，高频驱动信号阻断单元500预先阻挡高频驱动信号VHF。