公开(公告)号：US08947060B2

公开(公告)日：2015-02-03

申请号：US12953392

申请日：2010-11-23

Applicant: Da Song Lin ,  Ni Zeng ,  Gang Zha ,  Xianfeng Xiong ,  Yiwei Zhang

Inventor： Da Song Lin ,  Ni Zeng ,  Gang Zha ,  Xianfeng Xiong ,  Yiwei Zhang

IPC: G05F1/00 ,  H02M1/32 ,  H02M3/00

CPC classification number: H02M1/32 ,  H02M3/00

Abstract: An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.

Abstract translation: 本发明的实施例涉及一种形成有误差放大器的功率转换器及相关方法。 在一个实施例中，第一开关与误差放大器补偿电容器串联耦合。 在检测到大于阈值电平的电流电平时，通过打开第一开关将补偿电容器与误差放大器去耦。 在一个实施例中，第二开关与补偿电容器并联耦合，并且当检测到大于阈值电平的电流电平时，电流检测电路使得​​第二开关的电导率能够使补偿电容器放电。 在检测到小于阈值电平的当前电平时，打开第二个开关。 在一个实施例中，电流检测电路在检测到大于阈值电平的内部电流电平时，将电力转换器的输出电流控制在限流电平。

公开(公告)号：US20110156688A1

公开(公告)日：2011-06-30

申请号：US12953392

申请日：2010-11-23

Applicant: Da Song Lin ,  Ni Zeng ,  Gang Zha ,  Xianfeng Xiong ,  Yiwei Zhang

Inventor： Da Song Lin ,  Ni Zeng ,  Gang Zha ,  Xianfeng Xiong ,  Yiwei Zhang

IPC: G05F1/10

CPC classification number: H02M1/32 ,  H02M3/00

Abstract: An embodiment of the invention relates to a power converter formed with an error amplifier and a related method. In an embodiment, a first switch is coupled in series with an error amplifier compensation capacitor. Upon detection of a current level greater than a threshold level, the compensation capacitor is decoupled from the error amplifier by opening the first switch. In an embodiment, a second switch is coupled in parallel with the compensation capacitor, and the current-sensing circuit enables conductivity of the second switch to discharge the compensation capacitor upon detection of the current level greater than the threshold level. The second switch is opened upon detection of the current level less than the threshold level. In an embodiment, the current-sensing circuit controls an output current of the power converter at a current-limit level upon detection of the internal current level greater than the threshold level.

Abstract translation: 本发明的实施例涉及一种形成有误差放大器的功率转换器及相关方法。 在一个实施例中，第一开关与误差放大器补偿电容器串联耦合。 在检测到大于阈值电平的电流电平时，通过打开第一开关将补偿电容器与误差放大器去耦。 在一个实施例中，第二开关与补偿电容器并联耦合，并且当检测到大于阈值电平的电流电平时，电流检测电路使得​​第二开关的电导率能够使补偿电容器放电。 在检测到小于阈值电平的当前电平时，打开第二个开关。 在一个实施例中，电流检测电路在检测到大于阈值电平的内部电流电平时，将电力转换器的输出电流控制在限流电平。

公开(公告)号：US08638127B2

公开(公告)日：2014-01-28

申请号：US12955644

申请日：2010-11-29

Applicant: Ni Zeng ,  Da Song Lin

Inventor： Ni Zeng ,  Da Song Lin

IPC: H03K5/153

CPC classification number: G01R19/16576

Abstract: Embodiments related to an undervoltage detector are described and depicted. An undervoltage detector is formed to detect a low input bias voltage with a voltage divider network including first and second series circuits of semiconductor devices coupled to terminals of the input bias voltage source, and a resistor voltage divider including first and second voltage divider resistors coupled in series with the first and second series circuits. A ratio representing the numbers of semiconductor devices in the series circuits is substantially equal to a ratio of resistances in the resistor voltage divider. The equality of the ratios may be corrected by the presence of other resistances in the undervoltage detector. The semiconductor devices are each coupled in a diode configuration. The first series circuit is coupled to a current mirror to provide a bias current for a comparator that produces an output signal for the undervoltage detector.

Abstract translation: 描述和描绘与欠压检测器相关的实施例。 形成欠电压检测器以利用包括耦合到输入偏置电压源的端子的半导体器件的第一和第二串联电路的分压器网络来检测低输入偏置电压，以及电阻器分压器，包括耦合在第一和第二分压电阻器 系列与第一和第二串联电路。 表示串联电路中的半导体器件的数量的比率基本上等于电阻器分压器中的电阻的比率。 可以通过在欠压检测器中存在其它电阻来校正比率的相等性。 半导体器件各自以二极管配置耦合。 第一串联电路耦合到电流镜，以为产生用于欠压检测器的输出信号的比较器提供偏置电流。

公开(公告)号：US20110148471A1

公开(公告)日：2011-06-23

申请号：US12955644

申请日：2010-11-29

Applicant: Ni Zeng ,  Da Song Lin

Inventor： Ni Zeng ,  Da Song Lin

IPC: H03K5/22

CPC classification number: G01R19/16576

Abstract: Embodiments related to an undervoltage detector are described and depicted. An undervoltage detector is formed to detect a low input bias voltage with a voltage divider network including first and second series circuits of semiconductor devices coupled to terminals of the input bias voltage source, and a resistor voltage divider including first and second voltage divider resistors coupled in series with the first and second series circuits. A ratio representing the numbers of semiconductor devices in the series circuits is substantially equal to a ratio of resistances in the resistor voltage divider. The equality of the ratios may be corrected by the presence of other resistances in the undervoltage detector. The semiconductor devices are each coupled in a diode configuration. The first series circuit is coupled to a current mirror to provide a bias current for a comparator that produces an output signal for the undervoltage detector.

Abstract translation: 描述和描绘与欠压检测器相关的实施例。 形成欠电压检测器以利用包括耦合到输入偏置电压源的端子的半导体器件的第一和第二串联电路的分压器网络来检测低输入偏置电压，以及电阻器分压器，包括耦合在第一和第二分压电阻器 系列与第一和第二串联电路。 表示串联电路中的半导体器件的数量的比率基本上等于电阻器分压器中的电阻的比率。 可以通过在欠压检测器中存在其它电阻来校正比率的相等性。 半导体器件各自以二极管配置耦合。 第一串联电路耦合到电流镜，以为产生用于欠压检测器的输出信号的比较器提供偏置电流。