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。

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。

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

公开(公告)号：US20090185639A1

公开(公告)日：2009-07-23

申请号：US12354433

申请日：2009-01-15

申请人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

发明人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

IPC分类号： H04L25/06 ,  H03L5/00 ,  H03M1/66

CPC分类号： H04L25/061 ,  H03M1/1295

摘要： A DC offset correction circuit includes a DC offset detector generating a detection voltage based on a result of a comparison of a first reference voltage and a voltage difference between signals input to the DC offset detector, a comparator comparing a second reference voltage and the detection voltage and a third reference voltage and the detection voltage and outputting first and second comparison signals, respectively, as a result of the comparisons, and an up/down counter performing an up or a down count operation in response to one of the first or second comparison signals and, as a result of the up or down count operation, outputting a signal that causes at least one control signal for canceling a DC offset in a signal input to a receiver to be generated.

摘要翻译： DC偏移校正电路包括DC偏移检测器，其基于第一参考电压的比较结果和输入到DC偏移检测器的信号之间的电压差产生检测电压;比较器，比较第二参考电压和检测电压 以及第三参考电压和检测电压，并且作为比较的结果分别输出第一和第二比较信号，以及响应于第一或第二比较中的一个比较而执行向上或向下计数操作的向上/向下计数器 信号，并且作为向上或向下计数操作的结果，输出引起至少一个控制信号以消除输入到接收机的信号的DC偏移的信号以产生。

公开(公告)号：US20090153254A1

公开(公告)日：2009-06-18

申请号：US12265395

申请日：2008-11-05

申请人： Hwa Yeal Yu ,  Dong Jin Keum

发明人： Hwa Yeal Yu ,  Dong Jin Keum

IPC分类号： H03L7/08

CPC分类号： H03L7/1976 ,  H03C3/0925 ,  H03C3/0933 ,  H03C3/0941 ,  H03C3/095 ,  H03C3/0991 ,  H03L7/0891 ,  H03L7/093

摘要： A PLL circuit for two point modulation includes a first loop filter, a second loop filter, a plurality of switching devices, and a calibration module. The first loop filter filters an output voltage of a charge pump during a gain calibration operation. The second loop filter filters the output voltage of the charge pump during a normal operation. The first loop filter has a bandwidth wider than that of the second loop filter to perform a fast calibration by reducing a lock time. The operation of the first loop filter, the operation of the second loop filter, and the opening of the first loop filter are determined by the switching operations of the switching devices. The calibration module adjusts a gain of analog modulation data based on a frequency error accumulated in the first loop filter after the first loop filter is open during the gain calibration operation.

摘要翻译： 用于两点调制的PLL电路包括第一环路滤波器，第二环路滤波器，多个开关装置和校准模块。 第一个环路滤波器在增益校准操作期间对电荷泵的输出电压进行滤波。 第二个环路滤波器在正常运行期间对电荷泵的输出电压进行滤波。 第一环路滤波器具有比第二环路滤波器更宽的带宽，以通过减少锁定时间来执行快速校准。 第一环路滤波器的操作，第二环路滤波器的操作和第一环路滤波器的断开由开关装置的切换操作决定。 在增益校准操作期间，校准模块基于在第一环路滤波器打开之后累积在第一环路滤波器中的频率误差来调整模拟调制数据的增益。

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。

公开(公告)号：US20120242313A1

公开(公告)日：2012-09-27

申请号：US13426638

申请日：2012-03-22

申请人： YUS KO ,  DONG JIN KEUM

发明人： YUS KO ,  DONG JIN KEUM

IPC分类号： G05F1/10

CPC分类号： H02M1/44 ,  H02M2001/0025

摘要： The switching regulator includes a voltage-to-current converter to convert a noise voltage into a noise current and output the noise current; and a sawtooth generator to output a sawtooth voltage signal having a frequency that varies in response to the noise current output from the voltage-to-current converter.

摘要翻译： 开关调节器包括电压 - 电流转换器，用于将噪声电压转换成噪声电流并输出噪声电流; 以及锯齿波发生器，用于输出具有响应于从电压 - 电流转换器输出的噪声电流而变化的频率的锯齿波电压信号。

公开(公告)号：US09148052B2

公开(公告)日：2015-09-29

申请号：US13426638

申请日：2012-03-22

申请人： Yus Ko ,  Dong Jin Keum

发明人： Yus Ko ,  Dong Jin Keum

IPC分类号： G05F1/575 ,  H02M1/44 ,  H02M1/00

CPC分类号： H02M1/44 ,  H02M2001/0025

摘要： The switching regulator includes a voltage-to-current converter to convert a noise voltage into a noise current and output the noise current; and a sawtooth generator to output a sawtooth voltage signal having a frequency that varies in response to the noise current output from the voltage-to-current converter.

摘要翻译： 开关调节器包括电压 - 电流转换器，用于将噪声电压转换成噪声电流并输出噪声电流; 以及锯齿波发生器，用于输出具有响应于从电压 - 电流转换器输出的噪声电流而变化的频率的锯齿波电压信号。

公开(公告)号：US08126087B2

公开(公告)日：2012-02-28

申请号：US12354433

申请日：2009-01-15

申请人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

发明人： Ju Young Han ,  Dong Jin Keum ,  Ji Soo Jang

IPC分类号： H04L25/06

CPC分类号： H04L25/061 ,  H03M1/1295

摘要： A DC offset correction circuit includes a DC offset detector generating a detection voltage based on a result of a comparison of a first reference voltage and a voltage difference between signals input to the DC offset detector, a comparator comparing a second reference voltage and the detection voltage and a third reference voltage and the detection voltage and outputting first and second comparison signals, respectively, as a result of the comparisons, and an up/down counter performing an up or a down count operation in response to one of the first or second comparison signals and, as a result of the up or down count operation, outputting a signal that causes at least one control signal for canceling a DC offset in a signal input to a receiver to be generated.

摘要翻译： DC偏移校正电路包括DC偏移检测器，其基于第一参考电压的比较结果和输入到DC偏移检测器的信号之间的电压差产生检测电压;比较器，比较第二参考电压和检测电压 以及第三参考电压和检测电压，并且作为比较的结果分别输出第一和第二比较信号，以及响应于第一或第二比较中的一个比较而执行向上或向下计数操作的向上/向下计数器 信号，并且作为向上或向下计数操作的结果，输出引起至少一个控制信号以消除输入到接收机的信号的DC偏移的信号以产生。

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。