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1. 发明授权

US5838803A Muting circuit 失效
标题翻译：静音电路
公开(公告)号：US5838803A
公开(公告)日：1998-11-17
申请号：US777467
申请日：1996-12-30
申请人： Dong-Jin Keum , Jin-Sub Choi , Duck-young Jung
发明人： Dong-Jin Keum , Jin-Sub Choi , Duck-young Jung
IPC分类号： H03K17/16 , H03F1/00 , H03F1/26 , H03F3/34 , H03G3/34 , H04B1/10 , H04N5/213 , H04B15/00
CPC分类号： H03G3/345 , H03G3/348
摘要： There is provided a mute control circuit which is simplified to efficiently remove switching noise during the muting of each output and reducing the number of connection pins required for a given integrated circuit. The mute control circuit includes a pulse generator for receiving the each mute signal and generating a control pulse; a charge/discharge signal generator for receiving the control pulse and generating a charge/discharge signal and a switching control signal; a controller for receiving the charge/discharge signal and controlling the mute operation of the output terminal according to the switching control signal; and a switching signal generator for receiving the mute signal, generating a switching signal according to the switching control signal of the charge/discharge signal generator, and supplying the switching signal to the controller.
摘要翻译：提供了一种静音控制电路，其被简化以在每个输出的静音期间有效地去除开关噪声，并减少给定集成电路所需的连接引脚的数量。静音控制电路包括用于接收每个静音信号并产生控制脉冲的脉冲发生器; 充电/放电信号发生器，用于接收控制脉冲并产生充电/放电信号和开关控制信号; 控制器，用于接收充电/放电信号，并根据开关控制信号控制输出端子的静音操作; 以及开关信号发生器，用于接收静音信号，根据充电/放电信号发生器的开关控制信号产生开关信号，并将开关信号提供给控制器。

2. 发明授权

US5717763A Vocal mix circuit 失效
标题翻译：声乐混音电路
公开(公告)号：US5717763A
公开(公告)日：1998-02-10
申请号：US678036
申请日：1996-07-10
申请人： Jin-Sub Choi , Dong-Jin Keum
发明人： Jin-Sub Choi , Dong-Jin Keum
IPC分类号： G10L21/02 , H03G5/02 , H04S1/00
CPC分类号： H04S1/00
摘要： A vocal mix circuit shifts the phase of a mixed audio signal using a phase shifter, and achieves a mixed signal emphasizing the voice components thereof, by subtracting a signal which is not shifted from the signal shifted by the phase shifter. Gain through the above steps is controlled by the gain controller. Then, operators process both the initial signals and the signal through the phase shifter and the gain controller. Accordingly, the vocal mix circuit enables a person to hear with high sensitivity, has a simple circuit, and reduces the number of external pins.
摘要翻译：语音混合电路使用移相器来移动混合音频信号的相位，并且通过减去不被移相器移位的信号偏移的信号来实现强调其语音成分的混合信号。上述步骤的增益由增益控制器控制。然后，操作者通过移相器和增益控制器处理初始信号和信号。因此，声乐混合电路使得人们能够以高灵敏度听到，具有简单的电路，并且减少了外部引脚的数量。

3. 发明申请

US20060043945A1 Power regulator having over-current protection circuit and method of providing over-current protection thereof 有权
标题翻译：具有过电流保护电路的电力调节器及其过电流保护方法
公开(公告)号：US20060043945A1
公开(公告)日：2006-03-02
申请号：US11207698
申请日：2005-08-20
申请人： Il-Young Sohn , Dong-Jin Keum
发明人： Il-Young Sohn , Dong-Jin Keum
IPC分类号： G05F1/56
CPC分类号： G05F1/573
摘要： A power regulator includes a pass transistor, a feedback circuit, an error amplifier and a protection circuit. The pass transistor receives an unregulated first power supply voltage, and an output terminal of the power regulator outputs an output voltage varying depending upon a control signal. The feedback circuit senses a current flowing through the pass transistor and generates a feedback signal. The error amplifier compares a reference signal to the feedback signal and generates a control signal varying depending upon a voltage difference between the reference signal and the feedback signal. The protection circuit scales down a current flowing through the pass transistor by a prescribed ratio and changes a voltage of the control signal when the scaled-down current has a value higher than a prescribed value. Accordingly, the power regulator may control a current limit correctly and be capable of implementing a sensing resistor having an appropriate resistance value for providing over-current protection that occupies a smaller chip area.
摘要翻译：功率调节器包括传输晶体管，反馈电路，误差放大器和保护电路。传输晶体管接收未调节的第一电源电压，并且功率调节器的输出端子输出根据控制信号而变化的输出电压。反馈电路感测流过传输晶体管的电流并产生反馈信号。误差放大器将参考信号与反馈信号进行比较，并产生根据参考信号和反馈信号之间的电压差而变化的控制信号。保护电路按照规定的比例缩小流过通过晶体管的电流，并且当按比例缩小的电流具有高于规定值的值时，改变控制信号的电压。因此，功率调节器可以正确地控制电流限制，并且能够实现具有适当电阻值的感测电阻器，以提供占用较小芯片面积的过电流保护。

4. 发明授权

US07362080B2 Power regulator having over-current protection circuit and method of providing over-current protection thereof 有权
标题翻译：具有过电流保护电路的电力调节器及其过电流保护方法
公开(公告)号：US07362080B2
公开(公告)日：2008-04-22
申请号：US11207698
申请日：2005-08-20
申请人： Il-Young Sohn , Dong-Jin Keum
发明人： Il-Young Sohn , Dong-Jin Keum
IPC分类号： G05F1/573
CPC分类号： G05F1/573
摘要： A power regulator includes a pass transistor, a feedback circuit, an error amplifier and a protection circuit. The pass transistor receives an unregulated first power supply voltage, and an output terminal of the power regulator outputs an output voltage varying depending upon a control signal. The feedback circuit senses a current flowing through the pass transistor and generates a feedback signal. The error amplifier compares a reference signal to the feedback signal and generates a control signal varying depending upon a voltage difference between the reference signal and the feedback signal. The protection circuit scales down a current flowing through the pass transistor by a prescribed ratio and changes a voltage of the control signal when the scaled-down current has a value higher than a prescribed value. Accordingly, the power regulator may control a current limit correctly and be capable of implementing a sensing resistor having an appropriate resistance value for providing over-current protection that occupies a smaller chip area.
摘要翻译：功率调节器包括传输晶体管，反馈电路，误差放大器和保护电路。传输晶体管接收未调节的第一电源电压，并且功率调节器的输出端子输出根据控制信号而变化的输出电压。反馈电路感测流过传输晶体管的电流并产生反馈信号。误差放大器将参考信号与反馈信号进行比较，并产生根据参考信号和反馈信号之间的电压差而变化的控制信号。保护电路按照规定的比例缩小流过通过晶体管的电流，并且当按比例缩小的电流具有高于规定值的值时，改变控制信号的电压。因此，功率调节器可以正确地控制电流限制，并且能够实现具有适当电阻值的感测电阻器，以提供占用较小芯片面积的过电流保护。

5. 发明授权

US09590505B2 Switching regulators, power management devices and systems including the same 有权
标题翻译：开关稳压器，电源管理器件和包括其的系统
公开(公告)号：US09590505B2
公开(公告)日：2017-03-07
申请号：US14542806
申请日：2014-11-17
申请人： Sung-Woo Moon , Hyun-Wook Yoo , Yus Ko , Dong-Jin Keum , Pyung-Woo Yeon
发明人： Sung-Woo Moon , Hyun-Wook Yoo , Yus Ko , Dong-Jin Keum , Pyung-Woo Yeon
IPC分类号： H02M3/156 , H02M3/158 , H02M1/00
CPC分类号： H02M3/158 , H02M2001/0025 , H02M2001/0045 , H02M2001/008
摘要： A switching regulator includes a DC-DC converter and a dynamic voltage positioning circuit. The DC-DC converter includes an inductor connected between an input port and an output port. The dynamic voltage positioning circuit includes a sensing circuit and a mirroring circuit. The sensing circuit is configured to sense an inductor current flowing through the inductor, and to convert a voltage applied to a direct current resistance (DCR) of the inductor into a droop current using a variable resistor. The mirroring circuit is configured to cause a voltage drop at the output port of the DC-DC converter based on a current corresponding to a difference between a bias current and the droop current.
摘要翻译：开关调节器包括DC-DC转换器和动态电压定位电路。 DC-DC转换器包括连接在输入端口和输出端口之间的电感器。动态电压定位电路包括感测电路和镜像电路。感测电路被配置为感测流过电感器的电感器电流，并且使用可变电阻器将施加到电感器的直流电阻（DCR）的电压转换成下降电流。镜像电路被配置为基于对应于偏置电流和下降电流之间的差的电流在DC-DC转换器的输出端口处引起电压降。

6. 发明授权

US08624573B2 Power converters including zero-current detectors and methods of power conversion 有权
标题翻译：电源转换器包括零电流检测器和电源转换方法
公开(公告)号：US08624573B2
公开(公告)日：2014-01-07
申请号：US13116296
申请日：2011-05-26
申请人： Jin-Hyuck Yu , Dong-Jin Keum , Hyoung-Seok Oh
发明人： Jin-Hyuck Yu , Dong-Jin Keum , Hyoung-Seok Oh
IPC分类号： G05F1/00
CPC分类号： H02M3/158 , H02M2001/0009
摘要： A power converter includes a zero-current detector having an adjustable offset voltage. The power converter includes a power converting unit and a switch driving circuit. The power converting unit generates a DC output voltage based on a pull-up driving signal, a pull-down driving signal and a DC input voltage. The switch driving circuit generates a first detection voltage signal based on the DC output voltage. The switch driving circuit includes a zero-current detector configured to adjust an offset voltage based on the first detection voltage signal and generate a zero-current detecting signal based on the offset voltage. The offset voltage and the zero-current detecting signal are associated with a current in the power converting unit. The switch driving circuit also includes a pulse-frequency modulating circuit configured to perform a pulse-frequency modulation (PFM) to generate the pull-up driving signal and the pull-down driving signal based on the zero-current detecting signal.
摘要翻译：功率转换器包括具有可调偏移电压的零电流检测器。电力转换器包括电力转换单元和开关驱动电路。功率转换单元基于上拉驱动信号，下拉驱动信号和DC输入电压产生DC输出电压。开关驱动电路基于直流输出电压产生第一检测电压信号。开关驱动电路包括：零电流检测器，被配置为基于第一检测电压信号调整偏移电压，并基于偏移电压产生零电流检测信号。偏移电压和零电流检测信号与功率转换单元中的电流相关联。开关驱动电路还包括：脉冲频率调制电路，被配置为基于零电流检测信号执行脉冲频率调制（PFM）以产生上拉驱动信号和下拉驱动信号。

7. 发明申请

US20110291632A1 Power Converters Including Zero-Current Detectors And Methods Of Power Conversion 有权
标题翻译：包括零电流检测器的电力转换器和电源转换方法
公开(公告)号：US20110291632A1
公开(公告)日：2011-12-01
申请号：US13116296
申请日：2011-05-26
申请人： Jin-Hyuck Yu , Dong-Jin Keum , Hyoung-Seok Oh
发明人： Jin-Hyuck Yu , Dong-Jin Keum , Hyoung-Seok Oh
IPC分类号： G05F1/618
CPC分类号： H02M3/158 , H02M2001/0009
摘要： A power converter includes a zero-current detector having an adjustable offset voltage. The power converter includes a power converting unit and a switch driving circuit. The power converting unit generates a DC output voltage based on a pull-up driving signal, a pull-down driving signal and a DC input voltage. The switch driving circuit generates a first detection voltage signal based on the DC output voltage. The switch driving circuit includes a zero-current detector configured to adjust an offset voltage based on the first detection voltage signal and generate a zero-current detecting signal based on the offset voltage. The offset voltage and the zero-current detecting signal are associated with a current in the power converting unit. The switch driving circuit also includes a pulse-frequency modulating circuit configured to perform a pulse-frequency modulation (PFM) to generate the pull-up driving signal and the pull-down driving signal based on the zero-current detecting signal
摘要翻译：功率转换器包括具有可调偏移电压的零电流检测器。电力转换器包括电力转换单元和开关驱动电路。功率转换单元基于上拉驱动信号，下拉驱动信号和DC输入电压产生DC输出电压。开关驱动电路基于直流输出电压产生第一检测电压信号。开关驱动电路包括：零电流检测器，被配置为基于第一检测电压信号调整偏移电压，并基于偏移电压产生零电流检测信号。偏移电压和零电流检测信号与功率转换单元中的电流相关联。开关驱动电路还包括：脉冲频率调制电路，被配置为基于零电流检测信号执行脉冲频率调制（PFM）以产生上拉驱动信号和下拉驱动信号

8. 发明申请

US20110309815A1 POWER CONVERTER AND METHOD OF POWER CONVERSION 有权
标题翻译：功率转换器和功率转换方法
公开(公告)号：US20110309815A1
公开(公告)日：2011-12-22
申请号：US13161526
申请日：2011-06-16
申请人： Jin-Hyuck Yu , Dong-Jin Keum
发明人： Jin-Hyuck Yu , Dong-Jin Keum
IPC分类号： G05F3/02
CPC分类号： H02M3/156 , H02M2001/0009 , H02M2001/0032 , Y02B70/16
摘要： A power converter includes a power converting unit and a driving circuit. The power converting unit generates a DC output voltage based on a pull up driving signal, a pull down driving signal, and a DC input voltage. The driving circuit compensates for an inductor peak current, and performs in a pulse-frequency-modulation (PFM) mode and a pulse-width-modulation (PWM) mode to generate the pull-up driving signal and the pull-down driving signal based on the DC output voltage and the compensated inductor peak current. The power converter performs a mode transition between the PFM and PWM modes at a uniform load current, even when a magnitude of the DC output voltage varies.
摘要翻译：功率转换器包括功率转换单元和驱动电路。功率转换单元基于上拉驱动信号，下拉驱动信号和直流输入电压产生DC输出电压。驱动电路补偿电感峰值电流，并以脉冲频率调制（PFM）模式和脉冲宽度调制（PWM）模式执行，以产生上拉驱动信号和下拉驱动信号直流输出电压和补偿电感峰值电流。功率转换器在均匀负载电流下执行PFM和PWM模式之间的模式转换，即使直流输出电压的幅度变化也是如此。

9. 发明授权

US08710818B2 Power converter and method of power conversion 有权
标题翻译：电源转换器和电源转换方法
公开(公告)号：US08710818B2
公开(公告)日：2014-04-29
申请号：US13161526
申请日：2011-06-16
申请人： Jin-Hyuck Yu , Dong-Jin Keum
发明人： Jin-Hyuck Yu , Dong-Jin Keum
IPC分类号： H02M3/156
CPC分类号： H02M3/156 , H02M2001/0009 , H02M2001/0032 , Y02B70/16
摘要： A power converter includes a power converting unit and a driving circuit. The power converting unit generates a DC output voltage based on a pull up driving signal, a pull down driving signal, and a DC input voltage. The driving circuit compensates for an inductor peak current, and performs in a pulse-frequency-modulation (PFM) mode and a pulse-width-modulation (PWM) mode to generate the pull-up driving signal and the pull-down driving signal based on the DC output voltage and the compensated inductor peak current. The power converter performs a mode transition between the PFM and PWM modes at a uniform load current, even when a magnitude of the DC output voltage varies.
摘要翻译：功率转换器包括功率转换单元和驱动电路。功率转换单元基于上拉驱动信号，下拉驱动信号和直流输入电压产生DC输出电压。驱动电路补偿电感峰值电流，并以脉冲频率调制（PFM）模式和脉冲宽度调制（PWM）模式执行，以产生上拉驱动信号和下拉驱动信号直流输出电压和补偿电感峰值电流。功率转换器在均匀负载电流下执行PFM和PWM模式之间的模式转换，即使直流输出电压的幅度变化也是如此。

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