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1. 发明授权

US07042289B2 Transconductance control circuit of rail-to-rail differential input stages 有权
标题翻译：轨到轨差动输入级跨导控制电路
公开(公告)号：US07042289B2
公开(公告)日：2006-05-09
申请号：US10817705
申请日：2004-04-02
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： H03F3/45
CPC分类号： H03F3/45183 , H03F2203/45366
摘要： A transconductance control circuit of a rail-to-rail differential input stage is described. The transconductance control circuit senses the gate-source voltages of PMOS and NMOS differential pairs, converts the sensed voltage to a current, compares the current with a reference current, and controls the currents of the PMOS and NMOS differential pairs to control the transconductance of the RTR differential input stage. Also, various types of biasing techniques and matching techniques are used to reduce the variations of the transconductance.
摘要翻译：描述了轨到轨差分输入级的跨导控制电路。跨导控制电路检测PMOS和NMOS差分对的栅极 - 源极电压，将感测到的电压转换为电流，将电流与参考电流进行比较，并控制PMOS和NMOS差分对的电流，以控制 RTR差分输入级。此外，使用各种类型的偏置技术和匹配技术来减少跨导的变化。

2. 发明授权

US07432745B2 Gate driver circuit 有权
标题翻译：门驱动电路
公开(公告)号：US07432745B2
公开(公告)日：2008-10-07
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： H03K3/00
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。

3. 发明授权

US07453314B2 Temperature-independent current source circuit 有权
标题翻译：温度独立电流源电路
公开(公告)号：US07453314B2
公开(公告)日：2008-11-18
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.
摘要翻译：提供与温度无关的电流源，其包括产生与温度成比例的电流的电流源和产生与温度成反比的电流的电流源。选择电路元件的值，使得电流源的电流加到基本上与温度无关的电流。相关的电流源使用双基准达林顿双极晶体管来产生与温度无关的电流。

4. 发明授权

US07057442B2 Temperature-independent current source circuit 有权
标题翻译：温度独立电流源电路
公开(公告)号：US07057442B2
公开(公告)日：2006-06-06
申请号：US10833693
申请日：2004-04-28
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.
摘要翻译：提供与温度无关的电流源，其包括产生与温度成比例的电流的电流源和产生与温度成反比的电流的电流源。选择电路元件的值，使得电流源的电流加到基本上与温度无关的电流。相关的电流源使用双基准达林顿双极晶体管来产生与温度无关的电流。

5. 发明申请

US20060220733A1 Temperature-independent current source circuit 有权
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.

6. 发明申请

US20060049859A1 Gate driver circuit 有权
标题翻译：门驱动电路
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。

7. 发明授权

US5892339A Three-phase brushless DC motor driving circuits and methods using one hall signal 失效
标题翻译：三相无刷直流电机驱动电路及方法采用一个霍尔信号
公开(公告)号：US5892339A
公开(公告)日：1999-04-06
申请号：US922789
申请日：1997-09-02
申请人： Shi-Hong Park , Yun-Kee Lee
发明人： Shi-Hong Park , Yun-Kee Lee
IPC分类号： H02P6/10 , H02K29/08 , G05B1/06
CPC分类号： H02K29/08 , H02P6/16
摘要： A three-phase brushless dc motor driving circuit can use only one Hall signal. The magnitude and phase of the Hall signal is used for commutation in order to perform soft switching, and an index marker circuit can determine the starting point of motor rotation. A clock signal is output at extreme points of the Hall signal generated by the Hall sensor. Based on the clock signal, three step voltage signals are generated, each step voltage signal having three voltage levels, signal periods three times that of the Hall signal and 120 and 240 degree phase differences with the other two step voltage signals. The direction of current flow in each stator coil is controlled based on the voltage difference each of the step voltage signals and the Hall signal. Index marker detection is performed by demagnetizing a portion of a magnet in a rotor of the motor and using an additional extreme point resulting in the Hall signal to output an index marker.
摘要翻译：三相无刷直流电机驱动电路只能使用一个霍尔信号。为了执行软开关，霍尔信号的幅度和相位用于换向，并且索引标记电路可以确定电机旋转的起始点。在由霍尔传感器产生的霍尔信号的极端点处输出时钟信号。基于时钟信号，产生三级电压信号，每个阶跃电压信号具有三个电压电平，信号周期是霍尔信号三倍的信号周期，另外两个步进电压信号具有120度和240度的相位差。每个定子线圈中的电流流动方向基于每个阶梯电压信号和霍尔信号的电压差来控制。通过使马达的转子中的磁体的一部分去磁并使用导致霍尔信号的附加极值点来输出索引标记来执行索引标记检测。

8. 发明授权

US06181093B2 Commutation circuit for a sensorless three-phase brushless direct curent motor 有权
标题翻译：无转子三相无刷直接电机的换向电路
公开(公告)号：US06181093B2
公开(公告)日：2001-01-30
申请号：US09376034
申请日：1999-08-17
申请人： Shi-Hong Park , Yun-Kee Lee
发明人： Shi-Hong Park , Yun-Kee Lee
IPC分类号： H02P118
CPC分类号： H02P6/21
摘要： A commutation circuit for a sensorless three-phase BLDC motor enables soft switching in the commutation process without the need for a complex delay circuit and generates signals separate from the back EMF signals of the stator to start the rotation of the motor rotor. The commutation circuit includes a starting circuit adapted to generate a starting clock signal to forcibly start the motor without information associated with the position of the motor rotor and generates first, second and third reference clock signals that are used to drive the motor in constant velocity operation. The commutation circuit also includes a constant velocity controlling circuit that compares the voltages from each of the phases to the neutral voltage of the stator and a stair/common voltage generating circuit that provides a first group of stair voltages and a common voltage to forcibly start rotation of the rotor or, alternatively, a second group of stair voltages with a second common voltage to optimally commutate the phases when the rotor is accelerating is turning at a constant operational speed.
摘要翻译：用于无传感器三相BLDC电动机的换向电路可实现换向过程中的软开关，而无需复合延迟电路，并产生与定子的反电动势信号分离的信号，以开始电动机转子的旋转。换向电路包括起动电路，其适于产生起动时钟信号以强制启动电动机，而不产生与电动机转子的位置相关联的信息，并产生用于以等速运行驱动电动机的第一，第二和第三参考时钟信号。换向电路还包括恒定速度控制电路，其将来自每个相的电压与定子的中性点电压进行比较;以及阶梯/公共电压发生电路，其提供第一组阶梯电压和公共电压以强制开始旋转或者替代地，具有第二公共电压的第二组阶梯电压，以在转子正在加速时使相位最佳地换向，以恒定的运行速度转动。

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