公开(公告)号：US08102676B2

公开(公告)日：2012-01-24

申请号：US12927940

申请日：2010-11-29

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33523

摘要： A cord correction circuit in a primary-side-controlled flyback converter compensates for the loss of output voltage caused by the resistance of the charger cord. In one embodiment, a correction voltage is subtracted from a feedback voltage received from a primary-side auxiliary inductor. A pre-amplifier then compares a reference voltage to the corrected feedback voltage. In another embodiment, the correction voltage is summed with the reference voltage, and the pre-amplifier compares the feedback voltage to the corrected reference voltage. The difference between the voltages on the input leads of the pre-amplifier is used to increase the output voltage to compensate for the voltage lost through the charger cord. The flyback converter also has a comparing circuit and a control loop that maintain the peak level of current flowing through the primary inductor of the converter. Adjusting the frequency and pulse width of an inductor switch signal controls the converter output current.

摘要翻译： 初级侧控制反激转换器中的电线校正电路补偿由充电器线的电阻引起的输出电压的损失。 在一个实施例中，从从初级侧辅助电感器接收的反馈电压中减去校正电压。 然后，前置放大器将参考电压与校正的反馈电压进行比较。 在另一个实施例中，校正电压与参考电压相加，并且前置放大器将反馈电压与校正的参考电压进行比较。 前置放大器的输入引脚上的电压之间的差异用于增加输出电压以补偿通过充电器线损失的电压。 反激转换器还具有比较电路和控制回路，其保持流经转换器初级电感器的电流的峰值电平。 调整电感开关信号的频率和脉冲宽度可控制转换器的输出电流。

公开(公告)号：US20080259654A1

公开(公告)日：2008-10-23

申请号：US11897131

申请日：2007-08-28

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33523

摘要： A cord correction circuit in a primary-side-controlled flyback converter compensates for the loss of output voltage caused by the resistance of the charger cord. In one embodiment, a correction voltage is subtracted from a feedback voltage received from a primary-side auxiliary inductor. A pre-amplifier then compares a reference voltage to the corrected feedback voltage. In another embodiment, the correction voltage is summed with the reference voltage, and the pre-amplifier compares the feedback voltage to the corrected reference voltage. The difference between the voltages on the input leads of the pre-amplifier is used to increase the output voltage to compensate for the voltage lost through the charger cord. The flyback converter also has a comparing circuit and a control loop that maintain the peak level of current flowing through the primary inductor of the converter. Adjusting the frequency and pulse width of an inductor switch signal controls the converter output current.

摘要翻译： 初级侧控制反激转换器中的电线校正电路补偿由充电器线的电阻引起的输出电压的损失。 在一个实施例中，从从初级侧辅助电感器接收的反馈电压中减去校正电压。 然后，前置放大器将参考电压与校正的反馈电压进行比较。 在另一个实施例中，校正电压与参考电压相加，并且前置放大器将反馈电压与校正的参考电压进行比较。 前置放大器的输入引脚上的电压之间的差异用于增加输出电压以补偿通过充电器线损失的电压。 反激转换器还具有比较电路和控制回路，其保持流经转换器初级电感器的电流的峰值电平。 调整电感开关信号的频率和脉冲宽度可控制转换器的输出电流。

公开(公告)号：US20080192515A1

公开(公告)日：2008-08-14

申请号：US11789160

申请日：2007-04-23

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0009

摘要： A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the pulse width controls the peak of the inductor current.

摘要翻译： 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流流过的电感开关。 电感电流在斜坡时间内以斜升速率增加，并在斜坡时间结束时停止增加。 比较电路产生一个定时信号，其指示如果电感器电流以升高速率继续增加，则电感器电流将达到预定电流极限的目标时间。 然后，控制环路接收定时信号，并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后，当目标时间发生时，电感开关控制信号的脉冲宽度就会增加。 调整脉冲宽度可以控制电感电流的峰值。

公开(公告)号：US07961483B2

公开(公告)日：2011-06-14

申请号：US12386609

申请日：2009-04-20

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0009

摘要： A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the pulse width controls the peak of the inductor current.

摘要翻译： 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流流过的电感开关。 电感电流在斜坡时间内以斜升速率增加，并在斜坡时间结束时停止增加。 比较电路产生一个定时信号，其指示如果电感器电流以升高速率继续增加，则电感器电流将达到预定电流极限的目标时间。 然后，控制环路接收定时信号，并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后，当目标时间发生时，电感开关控制信号的脉冲宽度就会增加。 调整脉冲宽度可以控制电感电流的峰值。

公开(公告)号：US07869229B2

公开(公告)日：2011-01-11

申请号：US11897131

申请日：2007-08-28

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33523

摘要： A cord correction circuit in a primary-side-controlled flyback converter compensates for the loss of output voltage caused by the resistance of the charger cord. In one embodiment, a correction voltage is subtracted from a feedback voltage received from a primary-side auxiliary inductor. A pre-amplifier then compares a reference voltage to the corrected feedback voltage. In another embodiment, the correction voltage is summed with the reference voltage, and the pre-amplifier compares the feedback voltage to the corrected reference voltage. The difference between the voltages on the input leads of the pre-amplifier is used to increase the output voltage to compensate for the voltage lost through the charger cord. The flyback converter also has a comparing circuit and a control loop that maintain the peak level of current flowing through the primary inductor of the converter. Adjusting the frequency and pulse width of an inductor switch signal controls the converter output current.

摘要翻译： 初级侧控制反激转换器中的电线校正电路补偿由充电器线的电阻引起的输出电压的损失。 在一个实施例中，从从初级侧辅助电感器接收的反馈电压中减去校正电压。 然后，前置放大器将参考电压与校正的反馈电压进行比较。 在另一个实施例中，校正电压与参考电压相加，并且前置放大器将反馈电压与校正的参考电压进行比较。 前置放大器的输入引脚上的电压之间的差异用于增加输出电压以补偿通过充电器线损失的电压。 反激转换器还具有比较电路和控制回路，其保持流经转换器初级电感器的电流的峰值电平。 调整电感开关信号的频率和脉冲宽度可控制转换器的输出电流。

公开(公告)号：US07697308B2

公开(公告)日：2010-04-13

申请号：US12315418

申请日：2008-12-03

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0009

摘要： A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the pulse width controls the peak of the inductor current.

摘要翻译： 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流流过的电感开关。 电感电流在斜坡时间内以斜升速率增加，并在斜坡时间结束时停止增加。 比较电路产生一个定时信号，其指示如果电感器电流以升高速率继续增加，则电感器电流将达到预定电流极限的目标时间。 然后，控制环路接收定时信号，并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后，当目标时间发生时，电感开关控制信号的脉冲宽度就会增加。 调整脉冲宽度可以控制电感电流的峰值。

公开(公告)号：US07911808B2

公开(公告)日：2011-03-22

申请号：US11789160

申请日：2007-04-23

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0009

摘要： A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the pulse width controls the peak of the inductor current.

摘要翻译： 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流流过的电感开关。 电感电流在斜坡时间内以斜升速率增加，并在斜坡时间结束时停止增加。 比较电路产生一个定时信号，其指示如果电感器电流以升高速率继续增加，则电感器电流将达到预定电流极限的目标时间。 然后，控制环路接收定时信号，并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后，当目标时间发生时，电感开关控制信号的脉冲宽度就会增加。 调整脉冲宽度可以控制电感电流的峰值。

公开(公告)号：US07679936B2

公开(公告)日：2010-03-16

申请号：US11893231

申请日：2007-08-14

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0009

摘要： A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls a switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the frequency and pulse width controls the peak of the inductor current.

摘要翻译： 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流通过的开关。 电感电流在斜坡时间内以斜升速率增加，并在斜坡时间结束时停止增加。 比较电路产生一个定时信号，其指示如果电感器电流以升高速率继续增加，则电感器电流将达到预定电流极限的目标时间。 然后，控制环路接收定时信号，并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后，当目标时间发生时，电感开关控制信号的脉冲宽度就会增加。 调整频率和脉冲宽度可以控制电感电流的峰值。

公开(公告)号：US07636246B2

公开(公告)日：2009-12-22

申请号：US11891397

申请日：2007-08-10

申请人： Steven Huynh ,  Zhibo Tao ,  David Kunst

发明人： Steven Huynh ,  Zhibo Tao ,  David Kunst

IPC分类号： H02M3/335

CPC分类号： H02M1/36

摘要： A start-up time accelerator is described for a switch controller that controls turning on or off a switch in a switching regulator. The start-up time accelerator uses the switch as a current amplifier and provides the amplified current to a capacitor using a current amplification path. In one example, the capacitor provides the bias voltage to a switch controller for the switch. Providing an amplified current to the capacitor accelerates the rate at which the bias voltage increases and reduces the time until the bias voltage reaches the turn-on threshold voltage of the switch controller. After the turn-on threshold voltage of the switch controller is reached, a second path is enabled for current to and from the capacitor and the capacitor provides the bias voltage to the switch controller until a voltage from an output voltage terminal is sufficiently high to provide the bias voltage for the switch controller through an auxiliary winding of a transformer.

摘要翻译： 描述了启动时间加速器用于开关控制器，其控制开关调节器中的开关的导通或截止。 启动时间加速器使用开关作为电流放大器，并使用电流放大路径将放大的电流提供给电容器。 在一个示例中，电容器为开关的开关控制器提供偏置电压。 向电容器提供放大的电流加速了偏置电压增加的速率，并减少了直到偏置电压达到开关控制器的导通阈值电压的时间。 在达到开关控制器的导通阈值电压之后，对来自电容器的电流启用第二路径，并且电容器向开关控制器提供偏置电压，直到来自输出电压端子的电压足够高以提供 开关控制器通过变压器辅助绕组的偏置电压。

公开(公告)号：US20090207636A1

公开(公告)日：2009-08-20

申请号：US12386609

申请日：2009-04-20

申请人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

发明人： Steven Huynh ,  Matthew Grant ,  David Kunst ,  Zhibo Tao

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M3/33523 ,  H02M2001/0009

摘要： A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the pulse width controls the peak of the inductor current.

摘要翻译： 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流流过的电感开关。 电感电流在斜坡时间内以斜升速率增加，并在斜坡时间结束时停止增加。 比较电路产生一个定时信号，其指示如果电感器电流以升高速率继续增加，则电感器电流将达到预定电流极限的目标时间。 然后，控制环路接收定时信号，并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后，当目标时间发生时，电感开关控制信号的脉冲宽度就会增加。 调整脉冲宽度可以控制电感电流的峰值。