公开(公告)号：US08598911B2

公开(公告)日：2013-12-03

申请号：US13080471

申请日：2011-04-05

申请人： Sung-Yun Park ,  Kunhee Cho ,  Dong-Hwan Kim

发明人： Sung-Yun Park ,  Kunhee Cho ,  Dong-Hwan Kim

IPC分类号： G01R29/02 ,  H03K9/08

CPC分类号： H03H19/004

摘要： The present invention relates a pulse width filter generating a modulation signal that is increased in synchronization with one of an increasing edge and a decreasing edge of the input signal and is decreased in synchronization with the other of the increasing edge and the decreasing edge, and transmitting the input signal of the modulation signal. The input signal passed through the filter unit is inverted thereby being an output signal. The pulse width filter controls the increasing and the decreasing of the modulation signal according to the output signal and the input signal passed through the filter unit, and the modulation signal is a signal to determined whether the pulse width of the input signal is more than the predetermined cut-off pulse width.

摘要翻译： 本发明涉及产生与输入信号的增加沿和下降沿之一同步增加的调制信号的脉冲宽度滤波器，并且与增加沿和递减沿中的另一个同步地减小，并且发送 调制信号的输入信号。 通过滤波器单元的输入信号被反相，从而作为输出信号。 脉冲宽度滤波器根据输出信号和通过滤波器单元的输入信号来控制调制信号的增加和减小，并且调制信号是确定输入信号的脉冲宽度是否大于 预定的截止脉冲宽度。

公开(公告)号：US08648644B2

公开(公告)日：2014-02-11

申请号：US13188727

申请日：2011-07-22

申请人： Kunhee Cho ,  Sung-Yun Park ,  Donghwan Kim

发明人： Kunhee Cho ,  Sung-Yun Park ,  Donghwan Kim

IPC分类号： H03K17/687

CPC分类号： H03K17/22 ,  H03K2217/0063 ,  H03K2217/0081 ,  Y10T307/625

摘要： The switch control device controls a switching operation of a power switch. The switch control device includes an auxiliary power device. The auxiliary power device includes a parasitic capacitor, and charges the parasitic capacitor by receiving a power voltage to generate an auxiliary power voltage. The switch control device includes a control pulse generator driven by the auxiliary power voltage and generating a set pulse and a reset pulse according to an input signal that is input for controlling the switching operation of the power switch. The switch control device generates a gate signal that turns on the power switch by being synchronized with the set pulse and generates a gate signal that turns off the power switch by being synchronized with the reset pulse.

摘要翻译： 开关控制装置控制电源开关的切换动作。 开关控制装置包括辅助电源装置。 辅助电源装置包括寄生电容器，并且通过接收电源电压来产生辅助电源电压来对寄生电容器充电。 开关控制装置包括由辅助电源电压驱动的控制脉冲发生器，并且根据用于控制电源开关的开关操作的输入信号产生设定脉冲和复位脉冲。 开关控制装置产生通过与设定脉冲同步来接通电源开关的门信号，并产生通过与复位脉冲同步而使电源开关断开的门信号。

公开(公告)号：US08633660B2

公开(公告)日：2014-01-21

申请号：US13028628

申请日：2011-02-16

申请人： Gye-Hyun Cho ,  Min-Ho Jung ,  Sung-Yun Park ,  Dong-Hwan Kim

发明人： Gye-Hyun Cho ,  Min-Ho Jung ,  Sung-Yun Park ,  Dong-Hwan Kim

IPC分类号： H05B37/02 ,  H02M7/217

CPC分类号： H02M1/083 ,  H05B33/0818 ,  Y02B20/346 ,  Y02B20/348

摘要： The present invention relates to a switching operation control device of a power switch, an LED light emitting device including the same, and a control method thereof. The control device detects a zero crossing time when a voltage at an input end of the power switch becomes a zero voltage, generates a reference signal that is synchronized with the voltage at the input end of the power switch by using the detected zero crossing time, and compensates the generated reference signal with a first voltage that is greater than the zero voltage during a blocking period corresponding to the zero crossing time.

摘要翻译： 本发明涉及一种电源开关的开关操作控制装置，包括该开关操作控制装置的LED发光装置及其控制方法。 当电源开关输入端的电压变为零电压时，控制装置检测过零时间，通过使用检测到的过零时间产生与电源开关输入端的电压同步的参考信号， 并且在对应于过零时间的阻塞期间内用大于零电压的第一电压来补偿所产生的参考信号。

公开(公告)号：US08593835B2

公开(公告)日：2013-11-26

申请号：US13239802

申请日：2011-09-22

申请人： Hyun-Chul Eom ,  Sung-Yun Park

发明人： Hyun-Chul Eom ,  Sung-Yun Park

IPC分类号： H02M3/315

CPC分类号： H02M3/3376

摘要： The present invention relates to an oscillator that is capable of realizing duty balancing.The oscillator determines a switching frequency of a converter converting an input voltage according to a switching operation of switches to generate an output voltage.The oscillator determines a first half cycle of a duty signal determining the switching frequency by using a reference current according to a feedback signal corresponding to the output voltage. The oscillator senses a first half cycle period by using an output of the frequency setting unit, and determines the same period as the first half cycle as a second half cycle of the duty signal after the first half cycle.

摘要翻译： 本发明涉及一种能够实现负载平衡的振荡器。 振荡器根据开关的开关动作决定转换输入电压的转换器的开关频率，生成输出电压。 振荡器根据与输出电压对应的反馈信号，通过使用参考电流来确定确定开关频率的占空比信号的前半周期。 振荡器通过使用频率设置单元的输出来感测前半个周期周期，并且确定与前半个周期相同的周期作为第一半周期之后的占空比信号的第二半周期。

公开(公告)号：US08148956B2

公开(公告)日：2012-04-03

申请号：US12608727

申请日：2009-10-29

申请人： Jong-Tae Hwang ,  Jin-Sung Kim ,  Moon-Sang Jung ,  Dae-Ho Kim ,  Sung-Yun Park

发明人： Jong-Tae Hwang ,  Jin-Sung Kim ,  Moon-Sang Jung ,  Dae-Ho Kim ,  Sung-Yun Park

IPC分类号： G05F1/70

CPC分类号： G05F1/70 ,  H02M1/4225 ,  H02M2001/0025 ,  Y02B70/126

摘要： The present invention relates to a power factor correction circuit and a method of driving the power factor correction circuit. The power factor correction circuit according to the present invention includes a power transfer element configured to receive an input voltage, an input current corresponding to the input voltage flowing through the power transfer element, and a switch connected to the power transfer element and configured to control an output voltage generated by the current flowing through the power transfer element. The power factor correction circuit is configured to detect a zero voltage edge timing of the input voltage by detecting the input voltage, generate a reference clock signal having a frequency that varies according to the detected edge timing, generate a reference signal using the reference clock signal, generate an error amplification signal based on a difference between the output voltage and a predetermined error reference signal, generate the amplification reference signal by multiplying the reference signal by the error amplification signal, and control a switching operation of the switch using the amplification reference signal and a detection signal corresponding to a current flowing through the switch.

摘要翻译： 本发明涉及一种功率因数校正电路和驱动功率因数校正电路的方法。 根据本发明的功率因数校正电路包括功率传输元件，其被配置为接收输入电压，对应于流过功率传递元件的输入电压的输入电流，以及连接到功率传输元件的开关，并且被配置为控制 由流过功率传递元件的电流产生的输出电压。 功率因数校正电路被配置为通过检测输入电压来检测输入电压的零电压边沿定时，产生具有根据检测到的边沿定时而变化的频率的参考时钟信号，使用参考时钟信号产生参考信号 基于输出电压和预定误差参考信号之间的差产生误差放大信号，通过将参考信号乘以误差放大信号产生放大参考信号，并使用放大参考信号来控制开关的开关操作 以及与流过开关的电流对应的检测信号。