公开(公告)号：US20100052640A1

公开(公告)日：2010-03-04

申请号：US12584102

申请日：2009-08-31

Applicant: Ji Yeoul Ryoo

Inventor： Ji Yeoul Ryoo

IPC: G05F1/00

CPC classification number: H02M3/158

Abstract: A stability compensation circuit and a DC-DC converter including the same are provided. When an output voltage of the DC-DC converter decreases more than a predetermined value, the stability compensation circuit quickly charges an integral capacitor by using an additional converter or by reducing an effective resistance of a charging circuit which charges the capacitor. Since an output voltage of an integrator in the stability compensation circuit is enabled to quickly reach a control voltage, the instant decrease of the output voltage of the DC-DC converter can be quickly compensated for.

Abstract translation: 提供了一种稳定补偿电路和包括该稳定补偿电路的DC-DC转换器。 当DC-DC转换器的输出电压下降超过预定值时，稳定性补偿电路通过使用额外的转换器或通过减小对电容器充电的充电电路的有效电阻快速地对积分电容器进行充电。 由于稳定补偿电路中的积分器的输出电压能够快速达到控制电压，所以可以快速补偿DC-DC转换器的输出电压的瞬间减小。

公开(公告)号：US08022680B2

公开(公告)日：2011-09-20

申请号：US12078261

申请日：2008-03-28

Applicant: Ji-Yeoul Ryoo

Inventor： Ji-Yeoul Ryoo

IPC: G05F1/10

CPC classification number: H02M3/156 ,  H02M2001/0022

Abstract: A power converter includes a power switch adapted to receive an input power from an external power source and to generate an output power, and an adaptive oscillator adapted to output an adaptive minimum-on signal of the power switch in response to a change in measured magnitude of at least one of the input power and the output power.

Abstract translation: 功率转换器包括适于从外部电源接收输入功率并产生输出功率的电源开关，以及自适应振荡器，其适于响应于测量幅度的变化而输出功率开关的自适应最小启动信号 输入功率和输出功率中的至少一个。

公开(公告)号：US08022574B2

公开(公告)日：2011-09-20

申请号：US12276706

申请日：2008-11-24

Applicant: Ji-Yeoul Ryoo

Inventor： Ji-Yeoul Ryoo

IPC: H02J1/00

CPC classification number: H02J1/10 ,  H02J7/0068 ,  Y10T307/696

Abstract: A maximum voltage source selector adapted for use in a semiconductor device operative in a disable state or an enable state is disclosed. The maximum voltage source selector includes an output unit having an output node providing a maximum voltage selected from a first input voltage and a second input voltage. First and second gate transistors are commonly coupled to the output node and are respectively configured to select and provide the greater of the first and second input voltages to the output node in response to first and second selection signals without regard to whether the semiconductor device is in the disable state or the enable state. A selection unit generates the first and second selection signals in response to the first and second input voltages.

Abstract translation: 公开了一种适用于半导体器件的最大电压源选择器，其工作在禁用状态或使能状态。 最大电压源选择器包括输出单元，该输出单元具有提供从第一输入电压和第二输入电压选择的最大电压的输出节点。 第一和第二栅极晶体管通常耦合到输出节点，并且分别被配置为响应于第一和第二选择信号而选择并向输出节点提供更大的第一和第二输入电压，而不考虑半导体器件是否在 禁用状态或使能状态。 选择单元响应于第一和第二输入电压产生第一和第二选择信号。

公开(公告)号：US07313244B2

公开(公告)日：2007-12-25

申请号：US10527677

申请日：2003-09-09

Applicant: Tae Ha Ryoo ,  Byung Tak Jang ,  Ji-yeoul Ryoo

Inventor： Tae Ha Ryoo ,  Byung Tak Jang ,  Ji-yeoul Ryoo

IPC: H04B15/00

CPC classification number: H03F1/305 ,  H03G3/348 ,  H04B1/1661

Abstract: Provided are a circuit for and a method of eliminating pop noise in a digital audio amplifier using dual power supply, which are simple, drop in price, and can be readily implemented in a semiconductor chip. According to an existing technique, pop noise is eliminated using a relay. However, in the present circuit and method, pop noise is eliminated using the small number of discrete electronic devices. The circuit for eliminating pop noise controls a voltage at a gate of a power switch, i.e., a power MOS transistor, when power supply voltages are applied and the application of power supply voltages is stopped.

Abstract translation: 提供了一种使用双电源消除数字音频放大器中的流行噪声的电路和方法，该电源简单，价格低廉，并且可以容易地在半导体芯片中实现。 根据现有的技术，使用继电器来消除爆音噪声。 然而，在本电路和方法中，使用少量的分立电子设备来消除弹出噪声。 用于消除爆音噪声的电路在施加电源电压并停止施加电源电压时控制功率开关的栅极即功率MOS晶体管的电压。

公开(公告)号：US06437360B1

公开(公告)日：2002-08-20

申请号：US09647076

申请日：2000-11-09

Applicant: Gyu Hyeong Cho ,  Ji Yeoul Ryoo ,  Myeoung Wun Hwang ,  Min Hyung Cho ,  Young Jin Woo ,  Young Ki Kim

Inventor： Gyu Hyeong Cho ,  Ji Yeoul Ryoo ,  Myeoung Wun Hwang ,  Min Hyung Cho ,  Young Jin Woo ,  Young Ki Kim

IPC: H01L2906

CPC classification number: H01J1/316 ,  H01J21/105

Abstract: Disclosed are flat/vertical type vacuum field transistor (VFT) structures, which adopt a MOSFET-like flat or vertical structure so as to increase the degree of integration and can be operated at low operation voltages at high speeds. The flat type comprises a source and a drain, made of conductors, which stand at a predetermined distance apart on a thin channel insulator with a vacuum channel therebetween; a gate, made of a conductor, which is formed with a width below the source and the drain, the channel insulator functioning to insulate the gate from the source and the drain; and an insulating body, which serves as a base for propping up the channel insulator and the gate. The vertical type comprises a conductive, continuous circumferential source with a void center, formed on a channel insulator; a conductive gate formed below the channel insulator, extending across the source; an insulating body for serving as a base to support the gate and the channel insulator; an insulating walls which stand over the source, forming a closed vacuum channel; and a drain formed over the vacuum channel. In both types, proper bias voltages are applied among the gate, the source and the drain to enable electrons to be field emitted from the source through the vacuum channel to the drain.

Abstract translation: 公开了平面/垂直型真空场效应晶体管（VFT）结构，它们采用类似MOSFET的平面或垂直结构，以增加集成度，并可在高速下在低工作电压下工作。 扁平型包括由导体制成的源极和漏极，它们在薄沟道绝缘体上以预定的距离隔开，其间具有真空通道; 由导体制成的栅极，其形成在源极和漏极下方的宽度，沟道绝缘体用于使栅极与源极和漏极绝缘; 以及用作支撑通道绝缘体和栅极的基座的绝缘体。 垂直型包括形成在通道绝缘体上的具有空心中心的导电连续周向源; 导电栅极，形成在沟道绝缘体下方，延伸穿过源极; 用作支撑栅极和沟道绝缘体的基座的绝缘体; 绝缘壁，其竖立在源上，形成封闭的真空通道; 以及在真空通道上形成的排水口。 在这两种类型中，在栅极，源极和漏极之间施加适当的偏置电压，以使电子能够从源极通过真空通道到漏极发射。

公开(公告)号：US08054112B2

公开(公告)日：2011-11-08

申请号：US12149323

申请日：2008-04-30

Applicant: Ji-Yeoul Ryoo

Inventor： Ji-Yeoul Ryoo

IPC: H03L7/00

CPC classification number: H03K17/223 ,  G06F1/24 ,  G06F1/28

Abstract: A reset control apparatus may include a first reference generator adapted to output a first reference value in response to an enable signal from an external power source, a second reference generator adapted to receive the first reference value and to output a second reference value, and a set signal generator adapted to output a set signal when the second reference value exceeds a predetermined value.

Abstract translation: 复位控制装置可以包括第一参考发生器，其适于响应于来自外部电源的使能信号输出第一参考值，第二参考发生器适于接收第一参考值并输出第二参考值，以及 所述设定信号发生器适于在所述第二参考值超过预定值时输出设定信号。

公开(公告)号：US20090134708A1

公开(公告)日：2009-05-28

申请号：US12276706

申请日：2008-11-24

Applicant: Ji-Yeoul RYOO

Inventor： Ji-Yeoul RYOO

IPC: H02J1/00

CPC classification number: H02J1/10 ,  H02J7/0068 ,  Y10T307/696

Abstract: A maximum voltage source selector adapted for use in a semiconductor device operative in a disable state or an enable state is disclosed. The maximum voltage source selector includes an output unit having an output node providing a maximum voltage selected from a first input voltage and a second input voltage. First and second gate transistors are commonly coupled to the output node and are respectively configured to select and provide the greater of the first and second input voltages to the output node in response to first and second selection signals without regard to whether the semiconductor device is in the disable state or the enable state. A selection unit generates the first and second selection signals in response to the first and second input voltages.

Abstract translation: 公开了一种适用于半导体器件的最大电压源选择器，其工作在禁用状态或使能状态。 最大电压源选择器包括输出单元，该输出单元具有提供从第一输入电压和第二输入电压选择的最大电压的输出节点。 第一和第二栅极晶体管通常耦合到输出节点，并且分别被配置为响应于第一和第二选择信号而选择并向输出节点提供更大的第一和第二输入电压，而不考虑半导体器件是否在 禁用状态或使能状态。 选择单元响应于第一和第二输入电压产生第一和第二选择信号。

公开(公告)号：US20090002037A1

公开(公告)日：2009-01-01

申请号：US12149323

申请日：2008-04-30

Applicant: Ji-Yeoul Ryoo

Inventor： Ji-Yeoul Ryoo

IPC: H03L7/00

CPC classification number: H03K17/223 ,  G06F1/24 ,  G06F1/28

Abstract: A reset control apparatus may include a first reference generator adapted to output a first reference value in response to an enable signal from an external power source, a second reference generator adapted to receive the first reference value and to output a second reference value, and a set signal generator adapted to output a set signal when the second reference value exceeds a predetermined value.

Abstract translation: 复位控制装置可以包括第一参考发生器，其适于响应于来自外部电源的使能信号输出第一参考值，第二参考发生器适于接收第一参考值并输出第二参考值，以及 所述设定信号发生器适于在所述第二参考值超过预定值时输出设定信号。

公开(公告)号：US08054604B2

公开(公告)日：2011-11-08

申请号：US12219736

申请日：2008-07-28

Applicant: Ji-Yeoul Ryoo

Inventor： Ji-Yeoul Ryoo

IPC: H02H9/08

CPC classification number: H02H9/001

Abstract: This disclosure provides a method and apparatus for reducing an inrush current inflowing from an external power source during an initial transient state. The method may include generating a first signal based on a level of internal voltage. The first signal may linearly increase or decrease, wherein the slope of the first signal may be fixed. The method may further include comparing the first signal with the reference voltage, and controlling an overcurrent prevention function based on the comparison results. An inrush current reducing device may include a reference voltage generating unit configured to compare a first signal and the reference voltage to control an overcurrent sensing gain, a gain unit configured to compare a first signal and the reference voltage to control an overcurrent sensing gain, and an overcurrent prevention signal generating unit configured to control an overcurrent prevention function based on the comparison results.

Abstract translation: 本公开提供了一种用于在初始瞬态期间减少从外部电源流入的浪涌电流的方法和装置。 该方法可以包括基于内部电压的电平产生第一信号。 第一信号可以线性地增加或减少，其中第一信号的斜率可以是固定的。 该方法还可以包括将第一信号与参考电压进行比较，并且基于比较结果来控制过电流防止功能。 浪涌电流降低装置可以包括：参考电压产生单元，被配置为比较第一信号和参考电压以控制过电流感测增益;增益单元，被配置为比较第一信号和参考电压以控制过电流感测增益;以及 过电流防止信号生成部，其基于比较结果来控制过电流防止功能。

公开(公告)号：US07948300B2

公开(公告)日：2011-05-24

申请号：US12539653

申请日：2009-08-12

Applicant: Ji-Yeoul Ryoo

Inventor： Ji-Yeoul Ryoo

IPC: G05F3/16 ,  H02M3/16

CPC classification number: H02M3/07 ,  H02M2003/071

Abstract: A negative supply voltage generating circuit includes a pulse generating circuit and a charge pump. The pulse generating circuit generates a first pulse signal and a second pulse signal in response to a clock signal. The first and second pulse signals have pulse widths different from each other. The charge pump generates a negative supply voltage by performing a charge pumping operation in response to the first and second pulse signals, and has a time interval between a switch-on time duration for charging a flying capacitor and a switch-on time duration for transmitting charges to an output capacitor.

Abstract translation: 负电源电压生成电路包括脉冲发生电路和电荷泵。 脉冲发生电路响应于时钟信号产生第一脉冲信号和第二脉冲信号。 第一和第二脉冲信号具有彼此不同的脉冲宽度。 电荷泵通过响应于第一和第二脉冲信号执行电荷泵送操作而产生负电源电压，并且具有用于对飞溅电容器充电的接通时间段和用于发送的接通时间间隔之间的时间间隔 充电到输出电容器。