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。

公开(公告)号：US07888768B2

公开(公告)日：2011-02-15

申请号：US11329268

申请日：2006-01-09

申请人： Sung-lyong Kim ,  Chang-ki Jeon ,  Jong-jib Kim ,  Jong-tae Hwang

发明人： Sung-lyong Kim ,  Chang-ki Jeon ,  Jong-jib Kim ,  Jong-tae Hwang

IPC分类号： H01L21/70 ,  H01L21/77

CPC分类号： H01L29/808 ,  H01L27/088

摘要： In one embodiment, a power integrated circuit device is provided. The power integrated circuit device includes a high-side power switch having a high voltage transistor and a low voltage transistor. The high voltage transistor has a gate, a source, and a drain, and is capable of withstanding a high voltage applied to its drain. The low voltage transistor has a gate, a source, and a drain, wherein the drain of the low voltage transistor is connected to the source of the high voltage transistor and the source of the low voltage transistor is connected to the gate of the high voltage transistor, and wherein a control signal is applied to the gate of the low voltage transistor from the power integrated circuit device. The high-side power switch is turned on when a predetermined voltage is applied to the source of the low voltage transistor, a voltage higher than the predetermined voltage is applied to the drain of the high voltage transistor, and a voltage level of the control signal becomes higher than the predetermined voltage by a threshold voltage of the low voltage transistor.

摘要翻译： 在一个实施例中，提供了功率集成电路器件。 功率集成电路装置包括具有高压晶体管和低压晶体管的高侧电源开关。 高压晶体管具有栅极，源极和漏极，并且能够承受施加到其漏极的高电压。 低压晶体管具有栅极，源极和漏极，其中低压晶体管的漏极连接到高压晶体管的源极，并且低压晶体管的源极连接到高电压的栅极 晶体管，并且其中控制信号从功率集成电路器件施加到低电压晶体管的栅极。 当向低电压晶体管的源极施加预定电压时，高侧电源开关接通，将高于预定电压的电压施加到高电压晶体管的漏极，并且控制信号的电压电平 通过低压晶体管的阈值电压变得高于预定电压。

公开(公告)号：US20100019809A1

公开(公告)日：2010-01-28

申请号：US12509013

申请日：2009-07-24

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

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

IPC分类号： H03B28/00

CPC分类号： H02M1/4208 ,  Y02B70/126

摘要： Disclosed are a switch controller, a switch control method, and a converter based thereon. The switch controller generates an input sensing voltage corresponding to the input voltage of the converter, and compares the input sensing voltage with a predetermined first reference value. The switch controller generates a zero cross detection signal with a first level or a second level depending upon the comparison result, and generates a reference clock signal varying in frequency in accordance with one cycle of the zero cross detection signal. The switch controller generates digital signals by using the reference clock signal and the zero cross detection signal. The digital signals synchronize with the zero cross detection signal, and increase in accordance with the reference clock signal during a half of one cycle of the zero cross detection signal, while decreasing in accordance with the reference clock signal during the other half cycle of the zero cross detection signal. The switch controller generates a reference signal with a voltage level corresponding to the digital signal.

摘要翻译： 公开了一种开关控制器，开关控制方法和基于其的转换器。 开关控制器产生与转换器的输入电压相对应的输入感测电压，并将输入感测电压与预定的第一参考值进行比较。 开关控制器根据比较结果产生具有第一电平或第二电平的零交叉检测信号，并且根据过零检测信号的一个周期产生频率变化的参考时钟信号。 开关控制器通过使用参考时钟信号和过零检测信号来产生数字信号。 数字信号与零交叉检测信号同步，并且在零交叉检测信号的一个周期的一半期间根据参考时钟信号增加，而在零的另一半周期期间根据参考时钟信号减小 交叉检测信号。 开关控制器产生具有与数字信号对应的电压电平的参考信号。

公开(公告)号：US20080272707A1

公开(公告)日：2008-11-06

申请号：US11805931

申请日：2007-05-25

申请人： Jong-Tae Hwang ,  Gye-Hyun Cho ,  Jin-Sung Kim ,  Jin-Ho Choi

发明人： Jong-Tae Hwang ,  Gye-Hyun Cho ,  Jin-Sung Kim ,  Jin-Ho Choi

IPC分类号： H05B41/36

CPC分类号： H05B41/2825

摘要： In one embodiment, a power switch driving circuit is provided for a fluorescent lamp ballast. The circuit includes a first power switch driven by a first driver. A controller has a first output terminal for outputting a control signal for controlling the first driver. The first driver includes a first capacitor having a first terminal electrically connected to a control electrode of the first power switch and a second terminal electrically connected to the first output terminal.

摘要翻译： 在一个实施例中，为荧光灯镇流器提供电源开关驱动电路。 电路包括由第一驱动器驱动的第一电源开关。 控制器具有用于输出用于控制第一驱动器的控制信号的第一输出端子。 第一驱动器包括具有电连接到第一电源开关的控制电极的第一端子和与第一输出端子电连接的第二端子的第一电容器。

公开(公告)号：US20060220733A1

公开(公告)日：2006-10-05

申请号：US11447586

申请日：2006-06-05

申请人： Jong-Tae Hwang ,  Dong-Hwan Kim ,  Yun-Kee Lee

发明人： Jong-Tae Hwang ,  Dong-Hwan Kim ,  Yun-Kee Lee

IPC分类号： G05F1/10

CPC分类号： G05F3/265

摘要： A temperature-independent current source is provided, which includes a current source generating a current that is proportional to the temperature and a current source generating a current that is inversely proportional to the temperature. Values of the circuit elements are selected so that the currents of the current sources add up to a substantially temperature-independent current. Related current sources utilize dual-base Darlington bipolar transistors to generate a temperature-independent current.

公开(公告)号：US20060049859A1

公开(公告)日：2006-03-09

申请号：US11218384

申请日：2005-09-02

申请人： Jong-Tae Hwang ,  Yun-Kee Lee ,  Dong-Hwan Kim

发明人： Jong-Tae Hwang ,  Yun-Kee Lee ,  Dong-Hwan Kim

IPC分类号： H03B1/00

CPC分类号： H03K17/162 ,  H03K17/063 ,  H03K2217/0018

摘要： A high voltage gate driver circuit according to an embodiment of the present invention controls an operational range of an output signal of a level shifter to be appropriate for an operational range of a reshaper through a VIV converter. Even though the voltage range of the signal which is input from the high voltage gate driver circuit to the level shifter is different from the operational range of the reshaper, the input signal can always be recognized exactly regardless of the VTH voltage of the reshaper by controlling the operational range of the signal through the VIV converter. In addition, incorrect operation of the circuit can be prevented by erasing a common mode noise which is input with the input signal.

摘要翻译： 根据本发明实施例的高电压栅极驱动器电路通过VIV转换器控制电平移位器的输出信号的操作范围，以适合于整流器的工作范围。 即使从高电压栅极驱动电路向电平移位器输入的信号的电压范围与整流器的工作范围不同，也可以总是通过控制通过整流器的VTH电压来精确地识别输入信号 通过VIV转换器的信号的工作范围。 此外，通过擦除用输入信号输入的共模噪声可以防止电路的不正确的操作。

公开(公告)号：US20130033197A1

公开(公告)日：2013-02-07

申请号：US13468330

申请日：2012-05-10

申请人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim

发明人： Jong Tae Hwang ,  Moonsang Jung ,  Daeho Kim

IPC分类号： H05B41/282

CPC分类号： H05B33/0815

摘要： An isolated flyback converter for an LED driver includes a snubber circuit unit connected to the primary side of a transformer; and a snubber voltage detection unit which detects a snubber voltage of the snubber circuit unit and generates a reference voltage proportional to the detected snubber voltage. Further, the isolated flyback converter includes a switching unit with a source terminal and a drain terminal, and may be turned on or off in response to an arbitrary logic signal. Furthermore, the isolated flyback converter includes a control unit which compares a voltage supplied through the switching current sensing resistor with the reference voltage, and supplies a logic signal at relatively high level or relatively low level to the switching unit to control the switching unit such that a secondary-side current of the transformer is maintained relatively constant.

摘要翻译： 用于LED驱动器的隔离反激转换器包括连接到变压器初级侧的缓冲电路单元; 以及缓冲电压检测单元，其检测缓冲电路单元的缓冲电压并产生与检测到的缓冲电压成比例的参考电压。 此外，隔离反激式转换器包括具有源极端子和漏极端子的开关单元，并且可以响应于任意逻辑信号而导通或关断。 此外，隔离反激式转换器包括：控制单元，其将通过开关电流检测电阻器提供的电压与参考电压进行比较，并将相对较高电平或相对低电平的逻辑信号提供给开关单元，以控制开关单元，使得 变压器的次级侧电流保持相对恒定。

公开(公告)号：US20100109615A1

公开(公告)日：2010-05-06

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。

公开(公告)号：US20070229051A1

公开(公告)日：2007-10-04

申请号：US11784162

申请日：2007-04-04

申请人： Jong-Tae Hwang ,  Moon-Sang Jung ,  Dong-Hwan Kim ,  Jin-Sung Kim

发明人： Jong-Tae Hwang ,  Moon-Sang Jung ,  Dong-Hwan Kim ,  Jin-Sung Kim

IPC分类号： G05F1/00

CPC分类号： H02M3/3376 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

摘要： A resonant inverter includes a first driver and a second driver for driving a first and second switching devices, respectively, a dead time generator for generating a first drive signal and a second drive signal respectively, a current-controlled oscillator for supplying, to the dead time generator, an output clock having a frequency determined based on a first current input to the current-controlled oscillator, and a current mirror for supplying the first current to the current-controlled oscillator in an amount proportional to a second current flowing through an external resistor. The current mirror includes a track/hold circuit, to supply the second current in an amount equal to an amount of the second current supplied before a variation in the amount of the second current, during a transition of an output signal between the first and second switching devices.

摘要翻译： 谐振逆变器包括分别用于驱动第一和第二开关装置的第一驱动器和第二驱动器，分别用于产生第一驱动信号和第二驱动信号的死区时间发生器，用于向死人提供电流控制振荡器 时间发生器，具有基于对电流控制振荡器的第一电流输入而确定的频率的输出时钟以及用于以与流过外部电流的第二电流成比例的量向电流控制振荡器提供第一电流的电流镜 电阻。 电流镜包括跟踪/保持电路，以在第一和第二电平之间的输出信号的转变期间提供等于第二电流量的变化之前提供的第二电流的量的量的第二电流 开关器件。

公开(公告)号：US20070145907A1

公开(公告)日：2007-06-28

申请号：US11607358

申请日：2006-12-01

申请人： Jong-Tae Hwang ,  Dae-Ho Kim ,  Moon-Sang Jung ,  Dong-Hwan Kim

发明人： Jong-Tae Hwang ,  Dae-Ho Kim ,  Moon-Sang Jung ,  Dong-Hwan Kim

IPC分类号： H05B41/36

CPC分类号： H05B41/2985 ,  H05B41/2981 ,  H05B41/2986

摘要： A ballast integrated circuit (IC) for driving a first switching element and a second switching element includes: a variable gain amplifier (VGA) connected to a first input terminal connected to a resistor, for generating an output current signal according to a resistance value of the resistor and a gain control signal; a preheating/ignition controller connected to a second input terminal connected to a capacitor, for generating an output current signal and an output voltage signal acting as the gain control signal according to a voltage of the second input terminal; an active zero-voltage controller for generating a hard-switching current signal and an active zero-voltage switching current signal, such that it adjusts the voltage of the second input terminal according to switching states of the first switching element and the second switching element; an oscillator for generating an oscillation signal upon receiving the output current signal from the variable gain amplifier (VGA); and a dead-time controller for receiving the voltage signal of the second input terminal and an output signal of the oscillator, adjusting a dead time using the received signals, and at the same time generating driving signals of the first and second switching elements.

摘要翻译： 用于驱动第一开关元件和第二开关元件的镇流器集成电路（IC）包括：连接到连接到电阻器的第一输入端子的可变增益放大器（VGA），用于根据电阻值的电阻值产生输出电流信号 电阻和增益控制信号; 连接到连接到电容器的第二输入端子的预热/点火控制器，用于根据第二输入端子的电压产生作为增益控制信号的输出电流信号和输出电压信号; 用于产生硬切换电流信号和有效零电压开关电流信号的有源零电压控制器，使得其根据第一开关元件和第二开关元件的开关状态来调节第二输入端子的电压; 用于在从可变增益放大器（VGA）接收输出电流信号时产生振荡信号的振荡器; 以及用于接收第二输入端子的电压信号和振荡器的输出信号的死区时间控制器，使用接收信号调整死区时间，同时产生第一和第二开关元件的驱动信号。