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1. 发明申请

US20110309885A1 DELAY CIRCUIT FOR LOW POWER RING OSCILLATOR 失效
标题翻译：低功率振荡器的延迟电路
公开(公告)号：US20110309885A1
公开(公告)日：2011-12-22
申请号：US12878476
申请日：2010-09-09
申请人： Myeung Su KIM , Han Jin CHO , Joon Hyung LIM , Kyung Hee HONG , Yong Il KWON
发明人： Myeung Su KIM , Han Jin CHO , Joon Hyung LIM , Kyung Hee HONG , Yong Il KWON
IPC分类号： H03K3/03
CPC分类号： H03K3/0322 , H03K3/012
摘要： Disclosed herein is a delay circuit for a low power ring oscillator. The delay circuit includes: a pair of N type transistors that receive first differential input signals Vin1+ and Vin1−; a pair of P type transistors that receive second differential input signals Vin2+ and Vin2−; a differential output terminal that outputs differential output signals Vout+ and Vout− generated from the pair of N type transistors and the pair of P type transistors; an N type detector that supplies a body voltage to the pair of N type transistors; and a P type detector that supplies a body voltage to the pair of P type transistors.
摘要翻译：这里公开了一种用于低功率环形振荡器的延迟电路。延迟电路包括：一对N型晶体管，其接收第一差分输入信号Vin1 +和Vin1-; 一对P型晶体管，接收第二差分输入信号Vin2 +和Vin2-; 差分输出端子，其输出从所述一对N型晶体管和所述一对P型晶体管产生的差分输出信号Vout +和Vout-; N型检测器，其向所述一对N型晶体管提供体电压; 以及向该P型晶体管对提供体电压的P型检测器。

2. 发明申请

US20080055012A1 MICROPOWER RC OSCILLATOR 有权
标题翻译：麦克风RC振荡器
公开(公告)号：US20080055012A1
公开(公告)日：2008-03-06
申请号：US11756032
申请日：2007-05-31
申请人： Joon Hyung LIM , Myeung Su KIM , Yong Il KWON , Tah Joon PARK
发明人： Joon Hyung LIM , Myeung Su KIM , Yong Il KWON , Tah Joon PARK
IPC分类号： H03K3/57
CPC分类号： H03K4/06
摘要： A micropower RC oscillator comprises a current generating section including a current source that generates a current; and a variable resistor of which the magnitude is variably set and which is configured by combining resistor elements at a predetermined ratio, the resistor elements having opposite characteristics to each other with respect to a temperature change, the variable resistor adjusting the magnitude of the generated current; a start-up circuit section connected to the current generating section and fixing a bias operating point to a constant value such that the current generating section stably generates a current; a charge and discharge circuit section including a variable capacitor, of which the magnitude is variably set, and a plurality of transistors, the charge and discharge circuit section charging and discharging the variable capacitor by using the current generated from the current generating section and the plurality of transistors; an oscillation signal output section connected to the charge and discharge circuit section and including a plurality of inverters, the oscillation signal output section outputting an oscillation signal of which the frequency is determined by the resistance of the variable resistor and the capacitance of the variable capacitor; and an inverter driving power supply section mirroring the current generated from the current generating section and then providing the mirrored current as a driving power supply of the inverters.
摘要翻译：微功率RC振荡器包括电流产生部分，其包括产生电流的电流源; 以及可变电阻器，其大小可变地设置，并且通过以预定比例组合电阻器元件来构成，所述电阻器元件相对于温度变化具有彼此相反的特性，所述可变电阻器调节所产生的电流的大小 ; 连接到电流产生部分的启动电路部分，并将偏压工作点固定为恒定值，使得电流产生部件稳定地产生电流; 一个充电和放电电路部分，包括其可变电容值的可变电容器，以及多个晶体管，该充放电电路部分通过使用从电流产生部分产生的电流和多个晶体管对可变电容器进行充电和放电的晶体管; 振荡信号输出部分连接到充放电电路部分并且包括多个反相器，振荡信号输出部分输出频率由可变电阻器的电阻确定的振荡信号和可变电容器的电容; 以及反相器驱动电源部，其将从电流产生部产生的电流反射，然后提供镜像电流作为逆变器的驱动电源。

3. 发明申请

US20070224964A1 SUB-HARMONIC FREQUENCY CONVERSION DEVICE 审中-公开
标题翻译：副谐波频率转换装置
公开(公告)号：US20070224964A1
公开(公告)日：2007-09-27
申请号：US11617583
申请日：2006-12-28
申请人： Yong IL KWON , Myeung Su KIM , Joon Hyung LIM , Tah Joon PARK , Jin Ho KO , Sang Hyun CHO , Jong Moon KIM
发明人： Yong IL KWON , Myeung Su KIM , Joon Hyung LIM , Tah Joon PARK , Jin Ho KO , Sang Hyun CHO , Jong Moon KIM
IPC分类号： H04B1/26
CPC分类号： H04B1/26 , H03D7/165
摘要： A sub-harmonic frequency conversion device includes: a voltage controlled oscillator for generating first to eighth oscillation frequency (LO) signals having a constant phase difference; a first mixer for performing a switching operation to mix the first to fourth LO signals having a phase difference of 90° and input signals, and outputting first IF signals; and a second mixer for performing a switching operation to mix the fifth to eighth LO signals having a phase difference of 90° and the input signals, and outputting second IF signals. Accordingly, the sub-harmonic frequency conversion device can use the low-frequency LO signal, and the power consumption can be reduced. In addition, because the mixers are implemented using a symmetric structure of the MOS transistors, the circuit configuration can be easily implemented.
摘要翻译：子谐波变频装置包括：压控振荡器，用于产生具有恒定相位差的第一至第八振荡频率（LO）信号; 第一混频器，用于执行切换操作以混合具有90°相位差的第一至第四LO信号和输入信号，并输出第一IF信号; 以及第二混频器，用于执行开关操作以混合具有90°相位差的第五至第八LO信号和输入信号，并输出第二IF信号。因此，副谐波变频装置可以使用低频LO信号，能够降低功耗。此外，由于使用MOS晶体管的对称结构来实现混频器，因此可以容易地实现电路配置。

4. 发明申请

US20070080754A1 VOLTAGE CONTROLLED OSCILLATOR WITH BODY BIAS CONTROL 有权
标题翻译：电压控制振荡器与身体偏差控制
公开(公告)号：US20070080754A1
公开(公告)日：2007-04-12
申请号：US11534453
申请日：2006-09-22
申请人： Dong Min PARK , Seong Hwan CHO , Tah Joon PARK , Yong Il KWON , Joon Hyung LIM , Myeung Su KIM
发明人： Dong Min PARK , Seong Hwan CHO , Tah Joon PARK , Yong Il KWON , Joon Hyung LIM , Myeung Su KIM
IPC分类号： H03L7/099
CPC分类号： H03L5/00 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03B5/1278
摘要： In a voltage controlled oscillator, a resonant circuit generates a resonant frequency in response to a tuning voltage. A differential oscillator includes first and second transistors differentially cross-coupled to the resonant circuit. The first and second transistors supply energy to the resonant circuit to oscillate the resonant frequency from the resonant circuit, thereby generating first and second oscillation signals having a phase difference of 180 degree. Also, the first and second transistors adjust the first and second oscillation signals to a uniform level in response to a body bias voltage. In addition, an output level detector detects a level of the first and second oscillation signals from the differential oscillator and supplies the body bias voltage corresponding to the detected level to a body of each of the first and second transistors.
摘要翻译：在压控振荡器中，谐振电路响应于调谐电压产生谐振频率。差分振荡器包括与谐振电路差分交叉耦合的第一和第二晶体管。第一和第二晶体管向谐振电路提供能量以从谐振电路振荡谐振频率，从而产生具有180度相位差的第一和第二振荡信号。此外，第一和第二晶体管响应于体偏置电压将第一和第二振荡信号调整到均匀的电平。此外，输出电平检测器检测来自差分振荡器的第一和第二振荡信号的电平，并将与检测电平相对应的体偏置电压提供给第一和第二晶体管中的每一个的主体。

5. 发明申请

US20130082672A1 CAPACITOR-FREE LOW DROP-OUT REGULATOR 审中-公开
标题翻译：无电容低压降稳压器
公开(公告)号：US20130082672A1
公开(公告)日：2013-04-04
申请号：US13348464
申请日：2012-01-11
申请人： Myeung Su KIM , Joon Hyung LIM , Sang Hoon HWANG , Sang Hyun MIN , Han Jin CHO , Tah Joon PARK
发明人： Myeung Su KIM , Joon Hyung LIM , Sang Hoon HWANG , Sang Hyun MIN , Han Jin CHO , Tah Joon PARK
IPC分类号： G05F1/10
CPC分类号： G05F1/575
摘要： There is provided a low drop-out regulator. The low drop-out regulator includes an amplifier including an odd number of operational amplifiers connected to one another in series, and an output unit including a pass transistor operated by an output from the amplifier and generating an output voltage to be applied to a load, wherein the pass transistor is an N-channel transistor, and the amplifier controls a feedback loop gain between an output terminal of one of the odd number of operational amplifiers and the output unit. The feedback loop gain may be controlled independently from the trans-conductance of the pass transistor, whereby the stable output voltage may be generated, even in the case that the load and the input voltage are changed, and the design parameter may be simplified.
摘要翻译：提供了一个低压差调节器。低压差调节器包括一个包括串联连接的奇数运算放大器的放大器，以及一个输出单元，包括一个由放大器的输出端工作的通过晶体管，并产生一个要加到负载上的输出电压，其中所述传输晶体管是N沟道晶体管，并且所述放大器控制所述奇数个运算放大器之一的输出端与所述输出单元之间的反馈环路增益。反馈环路增益可以独立于传输晶体管的跨导电阻来控制，由此即使在改变负载和输入电压的情况下也可以产生稳定的输出电压，并且可以简化设计参数。

6. 发明申请

US20130163289A1 POWER SWITCHING DRIVING APPARATUS, AND POWER FACTOR CORRECTION DEVICE AND POWER SUPPLY DEVICE HAVING THE SAME 审中-公开
标题翻译：电源切换驱动装置和功率因数校正装置及具有该功能的电源装置
公开(公告)号：US20130163289A1
公开(公告)日：2013-06-27
申请号：US13405791
申请日：2012-02-27
申请人： Myeung Su KIM , Koon Shik CHO , Jae Hyung LEE , Kwang Mook LEE
发明人： Myeung Su KIM , Koon Shik CHO , Jae Hyung LEE , Kwang Mook LEE
IPC分类号： H03K3/36 , G05F1/46 , H02M3/335
CPC分类号： H02M1/4225 , H02M3/335 , H03K17/0412 , Y02B70/126 , Y02P80/112
摘要： There are provided a power switching driving apparatus able to reduce a circuit area and increase a driving speed, and a power factor correction device and a power supply device having the same. The power switching driving apparatus includes: a first driving unit providing a switching signal in response to a control signal from the outside; a second driving unit including first and second NMOS FETs cascode-connected between an operational power source terminal supplying pre-set operation power and a ground, and performing switching complimentarily in response to the switching signal to provide a switching control signal controlling power switching; a current supply unit supplying a current for driving the second driving unit; and a voltage maintaining unit maintaining a voltage for driving the second driving unit.
摘要翻译：提供了能够减小电路面积并提高驱动速度的电力开关驱动装置，以及功率因数校正装置和具有该功率因数校正装置的电源装置。电源开关驱动装置包括：第一驱动单元，响应于来自外部的控制信号而提供开关信号; 第二驱动单元，包括在提供预置操作功率和地之间的操作电源端子之间并联连接的第一和第二NMOS FET，以及响应于所述切换信号而补充地进行切换以提供控制功率切换的开关控制信号; 提供用于驱动第二驱动单元的电流的电流供应单元; 以及保持用于驱动第二驱动单元的电压的电压保持单元。

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