公开(公告)号：US20120161662A1

公开(公告)日：2012-06-28

申请号：US13069558

申请日：2011-03-23

申请人： Jung Hyun KIM ,  Bo Hyun HWANG ,  Jung Sun KWON ,  Seung Kon KONG ,  Jae Shin LEE ,  Joon Youp SUNG

发明人： Jung Hyun KIM ,  Bo Hyun HWANG ,  Jung Sun KWON ,  Seung Kon KONG ,  Jae Shin LEE ,  Joon Youp SUNG

IPC分类号： H05B41/16 ,  H03K7/08

CPC分类号： H05B33/0842 ,  H05B33/0818 ,  H05B33/0824 ,  Y02B20/346

摘要： There is provided a digital PWM generator according to a first exemplary embodiment of the present invention including: an A/D converter dividing a predetermined reference voltage into a plurality of sections corresponding to a predetermined first set value, searching a section to which the magnitude of an input voltage Vin corresponds, among the plurality of sections, and converting a value corresponding to the searched section into a digital signal; a frequency selector providing a counting number by counting a predetermined high-speed counting clock during a one-cycle section of a predetermined reference clock; and a PWM signal generator converting the digital signal from the A/D converter into a ratio value corresponding to a ratio for the reference voltage and generating a PWM signal having a controlled duty ratio of the reference clock by using the ratio value and the counting number from the frequency selector.

摘要翻译： 提供了根据本发明的第一示例性实施例的数字PWM发生器，包括：A / D转换器，将预定的参考电压分成对应于预定的第一设定值的多个部分， 在多个部分中，输入电压Vin对应于将与搜索到的部分相对应的值转换为数字信号; 频率选择器，通过在预定参考时钟的一个周期段内对预定的高速计数时钟进行计数来提供计数数; 以及PWM信号发生器，其将来自A / D转换器的数字信号转换成与参考电压的比率相对应的比值，并通过使用比值和计数数来产生具有参考时钟的受控占空比的PWM信号 从频率选择器。

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：US20120074859A1

公开(公告)日：2012-03-29

申请号：US13186110

申请日：2011-07-19

申请人： Seung Kon KONG ,  Jae Shin LEE ,  Bo Hyun HWANG ,  Jung Hyun KIM ,  Jung Eui PARK ,  Joon Youp SUNG

发明人： Seung Kon KONG ,  Jae Shin LEE ,  Bo Hyun HWANG ,  Jung Hyun KIM ,  Jung Eui PARK ,  Joon Youp SUNG

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0848

摘要： There is provided a driver for light emitting diodes capable of differently setting duties in which driving current flows depending on respective light emitting diode (LED) channels according to a voltage deviation between the LED channels in order to reduce heat generated due to the voltage deviation between the LED channels. The driver for LEDs includes: a detecting unit detecting a voltage drop generated in each of a plurality of LED channels receiving driving power having a preset voltage level; a converting unit converting detected analog values from the detecting unit into digital values; and a driving unit differently setting switching duties in which driving current flows in each of the plurality of LED channels according to the digital values from the converting unit to drive the plurality of LED channels.

摘要翻译： 提供了一种用于发光二极管的驱动器，其能够根据LED通道之间的电压偏差，根据各个发光二极管（LED）通道驱动电流而不同地设定工作，以便减少由于LED通道之间的电压偏差而产生的热量 LED通道。 用于LED的驱动器包括：检测单元，其检测在多个LED通道中的每一个中产生的电压降，其接收具有预设电压电平的驱动功率; 转换单元将来自检测单元的检测到的模拟值转换为数字值; 以及驱动单元，其根据来自转换单元的数字值，驱动电流在多个LED通道中的每一个流动，切换负荷不同，以驱动多个LED通道。

公开(公告)号：US20120146530A1

公开(公告)日：2012-06-14

申请号：US13117691

申请日：2011-05-27

申请人： Dae Hoon HAN ,  Jeong In CHEON ,  Jae Shin LEE

发明人： Dae Hoon HAN ,  Jeong In CHEON ,  Jae Shin LEE

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  Y02B20/346

摘要： The present, invention relates to a light emitting diode driver that integrates a light emitting diode control function and a power switching control function at a secondary side insulated from a primary side in a power supply circuit, without using a photo coupler to control power switching at the primary side.

摘要翻译： 本发明涉及一种发光二极管驱动器，其在电源电路中将与发光二极管控制功能和功率切换控制功能集成在与初级侧绝缘的次级侧，而不使用光耦合器来控制功率切换 主要方面。

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：US20120068738A1

公开(公告)日：2012-03-22

申请号：US13027689

申请日：2011-02-15

申请人： Joon Youp SUNG ,  Jung Sun KWON ,  Jae Shin LEE ,  Seung Kon KONG ,  Jung Hyun KIM ,  Bo Hyun HWANG

发明人： Joon Youp SUNG ,  Jung Sun KWON ,  Jae Shin LEE ,  Seung Kon KONG ,  Jung Hyun KIM ,  Bo Hyun HWANG

IPC分类号： H03K5/22

CPC分类号： H05B33/0812 ,  H05B33/0896 ,  Y02B20/343 ,  Y02B20/345

摘要： The device for generating three mode signals includes: a voltage setting block including an input terminal receiving three input signals of driving voltage, open, and ground and setting three voltages according to the three input signals; and an output block including two output terminals and a second node B receiving the three voltages from the voltage setting block, and outputting three combined signals by comparing an input voltage with a reference voltage, whereby only a small number of resistors and amplifiers generates three mode signals to further reduce the chip size than the related art and the external power source is not required to solve the problems of the related art due to noise.

摘要翻译： 用于产生三个模式信号的装置包括：电压设置块，包括接收驱动电压，开路和地线三个输入信号的输入端，并根据三个输入信号设置三个电压; 以及包括两个输出端子和从电压设定块接收三个电压的第二节点B的输出块，并且通过将输入电压与参考电压进行比较来输出三个组合信号，由此只有少数电阻器和放大器产生三个模式 信号以进一步减小芯片尺寸，并且由于噪声而不需要外部电源来解决现有技术的问题。