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1. 发明授权

US08102676B2 Compensating for cord resistance to maintain constant voltage at the end of a power converter cord 有权
标题翻译：补偿电缆电阻，以保持电源转换器电源线末端的恒定电压
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。

2. 发明申请

US20080259654A1 Compensating for cord resistance to maintain constant voltage at the end of a power converter cord 有权
标题翻译：补偿电缆电阻，以保持电源转换器电源线末端的恒定电压
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。

3. 发明申请

US20080192515A1 Primary side constant output current controller with highly improved accuracy 有权
标题翻译：初级侧恒流输出电流控制器，精度高度提高
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。

4. 发明申请

US20090207636A1 Constant current and voltage controller in a small package with dual-use pin 有权
标题翻译：恒定电流和电压控制器采用小型封装双用引脚
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。

5. 发明申请

US20080259651A1 Constant current and voltage controller in a four-pin package with dual-use pin 有权
标题翻译：恒定电流和电压控制器采用四引脚封装双用引脚
公开(公告)号：US20080259651A1
公开(公告)日：2008-10-23
申请号：US11888599
申请日：2007-07-31
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 , H02M3/00
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。

6. 发明申请

US20110074352A1 Compensating for cord resistance to maintain constant voltage at the end of a power converter cord 有权
公开(公告)号：US20110074352A1
公开(公告)日：2011-03-31
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： H02J7/02
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.

7. 发明授权

US07667987B2 Adjusting inductor switching frequency to compensate for inductance that deviates from a stated magnitude in order to maintain constant output current from a primary-side power converter 有权
标题翻译：调整电感开关频率以补偿偏离规定幅度的电感，以保持初级侧电源转换器的恒定输出电流
公开(公告)号：US07667987B2
公开(公告)日：2010-02-23
申请号：US11881666
申请日：2007-07-26
申请人： Steven Huynh , Matthew Grant , David Kunst
发明人： Steven Huynh , Matthew Grant , David Kunst
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。

8. 发明授权

US07522431B2 Constant current and voltage controller in a four-pin package with dual-use pin 有权
标题翻译：恒定电流和电压控制器采用四引脚封装双用引脚
公开(公告)号：US07522431B2
公开(公告)日：2009-04-21
申请号：US11888599
申请日：2007-07-31
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。

9. 发明申请

US20080259652A1 Compensating for base current in a primary side power converter that uses an NPN bipolar transistor 有权
标题翻译：在使用NPN双极晶体管的初级侧功率转换器中补偿基极电流
公开(公告)号：US20080259652A1
公开(公告)日：2008-10-23
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： H02M7/00
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。

10. 发明授权

US07911808B2 Primary side constant output current controller with highly improved accuracy 有权
标题翻译：初级侧恒流输出电流控制器，精度高度提高
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。

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